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Add fork of Go 1.15-dev's crypto/x509 

Snapshotted from Go commit 619c7a48a38b28b521591b490fd14ccb7ea5e821
(https://go-review.googlesource.com/c/go/+/229762,
"crypto/x509: add x509omitbundledroots build tag to not embed roots")

With 975c01342a25899962969833d8b2873dc8856a4f
(https://go-review.googlesource.com/c/go/+/220721) removed, because it
depends on other stuff in Go std that doesn't yet exist in a Go
release.

Also, add a subset fork of Go's internal/testenv, for use by x509's tests.
This commit is contained in:
Numerous Gophers 2020-04-24 20:15:28 -07:00 committed by Brad Fitzpatrick
parent 2dac4f2b24
commit 3bab226299
36 changed files with 18578 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

160
tempfork/internal/testenv/testenv.go Normal file
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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package testenv is Tailscale's fork/subset of Go's
// internal/testenv. It exists to satisfy the tests of our fork of
// crypto/x509.
package testenv
import (
"errors"
"os"
"os/exec"
"path/filepath"
"runtime"
"strings"
"testing"
)
// HasGoBuild reports whether the current system can build programs with ``go build''
// and then run them with os.StartProcess or exec.Command.
func HasGoBuild() bool {
if os.Getenv("GO_GCFLAGS") != "" {
// It's too much work to require every caller of the go command
// to pass along "-gcflags="+os.Getenv("GO_GCFLAGS").
// For now, if $GO_GCFLAGS is set, report that we simply can't
// run go build.
return false
}
switch runtime.GOOS {
case "android", "js":
return false
case "darwin":
if runtime.GOARCH == "arm64" {
return false
}
}
return true
}
// MustHaveGoBuild checks that the current system can build programs with ``go build''
// and then run them with os.StartProcess or exec.Command.
// If not, MustHaveGoBuild calls t.Skip with an explanation.
func MustHaveGoBuild(t testing.TB) {
if os.Getenv("GO_GCFLAGS") != "" {
t.Skipf("skipping test: 'go build' not compatible with setting $GO_GCFLAGS")
}
if !HasGoBuild() {
t.Skipf("skipping test: 'go build' not available on %s/%s", runtime.GOOS, runtime.GOARCH)
}
}
// HasGoRun reports whether the current system can run programs with ``go run.''
func HasGoRun() bool {
// For now, having go run and having go build are the same.
return HasGoBuild()
}
// MustHaveGoRun checks that the current system can run programs with ``go run.''
// If not, MustHaveGoRun calls t.Skip with an explanation.
func MustHaveGoRun(t testing.TB) {
if !HasGoRun() {
t.Skipf("skipping test: 'go run' not available on %s/%s", runtime.GOOS, runtime.GOARCH)
}
}
// GoTool reports the path to the Go tool.
func GoTool() (string, error) {
if !HasGoBuild() {
return "", errors.New("platform cannot run go tool")
}
var exeSuffix string
if runtime.GOOS == "windows" {
exeSuffix = ".exe"
}
path := filepath.Join(runtime.GOROOT(), "bin", "go"+exeSuffix)
if _, err := os.Stat(path); err == nil {
return path, nil
}
goBin, err := exec.LookPath("go" + exeSuffix)
if err != nil {
return "", errors.New("cannot find go tool: " + err.Error())
}
return goBin, nil
}
// GoToolPath reports the path to the Go tool.
// It is a convenience wrapper around GoTool.
// If the tool is unavailable GoToolPath calls t.Skip.
// If the tool should be available and isn't, GoToolPath calls t.Fatal.
func GoToolPath(t testing.TB) string {
MustHaveGoBuild(t)
path, err := GoTool()
if err != nil {
t.Fatal(err)
}
// Add all environment variables that affect the Go command to test metadata.
// Cached test results will be invalidate when these variables change.
// See golang.org/issue/32285.
for _, envVar := range strings.Fields(KnownEnv) {
os.Getenv(envVar)
}
return path
}
// KnownEnv is a list of environment variables that affect the operation
// of the Go command.
const KnownEnv = `
AR
CC
CGO_CFLAGS
CGO_CFLAGS_ALLOW
CGO_CFLAGS_DISALLOW
CGO_CPPFLAGS
CGO_CPPFLAGS_ALLOW
CGO_CPPFLAGS_DISALLOW
CGO_CXXFLAGS
CGO_CXXFLAGS_ALLOW
CGO_CXXFLAGS_DISALLOW
CGO_ENABLED
CGO_FFLAGS
CGO_FFLAGS_ALLOW
CGO_FFLAGS_DISALLOW
CGO_LDFLAGS
CGO_LDFLAGS_ALLOW
CGO_LDFLAGS_DISALLOW
CXX
FC
GCCGO
GO111MODULE
GO386
GOARCH
GOARM
GOBIN
GOCACHE
GOENV
GOEXE
GOFLAGS
GOGCCFLAGS
GOHOSTARCH
GOHOSTOS
GOINSECURE
GOMIPS
GOMIPS64
GOMODCACHE
GONOPROXY
GONOSUMDB
GOOS
GOPATH
GOPPC64
GOPRIVATE
GOPROXY
GOROOT
GOSUMDB
GOTMPDIR
GOTOOLDIR
GOWASM
GO_EXTLINK_ENABLED
PKG_CONFIG
`

159
tempfork/x509/cert_pool.go Normal file
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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package x509
import (
"encoding/pem"
"errors"
"runtime"
)
// CertPool is a set of certificates.
type CertPool struct {
bySubjectKeyId map[string][]int
byName map[string][]int
certs []*Certificate
}
// NewCertPool returns a new, empty CertPool.
func NewCertPool() *CertPool {
return &CertPool{
bySubjectKeyId: make(map[string][]int),
byName: make(map[string][]int),
}
}
func (s *CertPool) copy() *CertPool {
p := &CertPool{
bySubjectKeyId: make(map[string][]int, len(s.bySubjectKeyId)),
byName: make(map[string][]int, len(s.byName)),
certs: make([]*Certificate, len(s.certs)),
}
for k, v := range s.bySubjectKeyId {
indexes := make([]int, len(v))
copy(indexes, v)
p.bySubjectKeyId[k] = indexes
}
for k, v := range s.byName {
indexes := make([]int, len(v))
copy(indexes, v)
p.byName[k] = indexes
}
copy(p.certs, s.certs)
return p
}
// SystemCertPool returns a copy of the system cert pool.
//
// Any mutations to the returned pool are not written to disk and do
// not affect any other pool returned by SystemCertPool.
//
// New changes in the system cert pool might not be reflected
// in subsequent calls.
func SystemCertPool() (*CertPool, error) {
if runtime.GOOS == "windows" {
// Issue 16736, 18609:
return nil, errors.New("crypto/x509: system root pool is not available on Windows")
}
if sysRoots := systemRootsPool(); sysRoots != nil {
return sysRoots.copy(), nil
}
return loadSystemRoots()
}
// findPotentialParents returns the indexes of certificates in s which might
// have signed cert. The caller must not modify the returned slice.
func (s *CertPool) findPotentialParents(cert *Certificate) []int {
if s == nil {
return nil
}
var candidates []int
if len(cert.AuthorityKeyId) > 0 {
candidates = s.bySubjectKeyId[string(cert.AuthorityKeyId)]
}
if len(candidates) == 0 {
candidates = s.byName[string(cert.RawIssuer)]
}
return candidates
}
func (s *CertPool) contains(cert *Certificate) bool {
if s == nil {
return false
}
candidates := s.byName[string(cert.RawSubject)]
for _, c := range candidates {
if s.certs[c].Equal(cert) {
return true
}
}
return false
}
// AddCert adds a certificate to a pool.
func (s *CertPool) AddCert(cert *Certificate) {
if cert == nil {
panic("adding nil Certificate to CertPool")
}
// Check that the certificate isn't being added twice.
if s.contains(cert) {
return
}
n := len(s.certs)
s.certs = append(s.certs, cert)
if len(cert.SubjectKeyId) > 0 {
keyId := string(cert.SubjectKeyId)
s.bySubjectKeyId[keyId] = append(s.bySubjectKeyId[keyId], n)
}
name := string(cert.RawSubject)
s.byName[name] = append(s.byName[name], n)
}
// AppendCertsFromPEM attempts to parse a series of PEM encoded certificates.
// It appends any certificates found to s and reports whether any certificates
// were successfully parsed.
//
// On many Linux systems, /etc/ssl/cert.pem will contain the system wide set
// of root CAs in a format suitable for this function.
func (s *CertPool) AppendCertsFromPEM(pemCerts []byte) (ok bool) {
for len(pemCerts) > 0 {
var block *pem.Block
block, pemCerts = pem.Decode(pemCerts)
if block == nil {
break
}
if block.Type != "CERTIFICATE" || len(block.Headers) != 0 {
continue
}
cert, err := ParseCertificate(block.Bytes)
if err != nil {
continue
}
s.AddCert(cert)
ok = true
}
return
}
// Subjects returns a list of the DER-encoded subjects of
// all of the certificates in the pool.
func (s *CertPool) Subjects() [][]byte {
res := make([][]byte, len(s.certs))
for i, c := range s.certs {
res[i] = c.RawSubject
}
return res
}

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// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package x509_test
import (
"crypto/dsa"
"crypto/ecdsa"
"crypto/ed25519"
"crypto/rsa"
"crypto/x509"
"encoding/pem"
"fmt"
)
func ExampleCertificate_Verify() {
// Verifying with a custom list of root certificates.
const rootPEM = `
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`
const certPEM = `
-----BEGIN CERTIFICATE-----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==
-----END CERTIFICATE-----`
// First, create the set of root certificates. For this example we only
// have one. It's also possible to omit this in order to use the
// default root set of the current operating system.
roots := x509.NewCertPool()
ok := roots.AppendCertsFromPEM([]byte(rootPEM))
if !ok {
panic("failed to parse root certificate")
}
block, _ := pem.Decode([]byte(certPEM))
if block == nil {
panic("failed to parse certificate PEM")
}
cert, err := x509.ParseCertificate(block.Bytes)
if err != nil {
panic("failed to parse certificate: " + err.Error())
}
opts := x509.VerifyOptions{
DNSName: "mail.google.com",
Roots: roots,
}
if _, err := cert.Verify(opts); err != nil {
panic("failed to verify certificate: " + err.Error())
}
}
func ExampleParsePKIXPublicKey() {
const pubPEM = `
-----BEGIN PUBLIC KEY-----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-----END PUBLIC KEY-----`
block, _ := pem.Decode([]byte(pubPEM))
if block == nil {
panic("failed to parse PEM block containing the public key")
}
pub, err := x509.ParsePKIXPublicKey(block.Bytes)
if err != nil {
panic("failed to parse DER encoded public key: " + err.Error())
}
switch pub := pub.(type) {
case *rsa.PublicKey:
fmt.Println("pub is of type RSA:", pub)
case *dsa.PublicKey:
fmt.Println("pub is of type DSA:", pub)
case *ecdsa.PublicKey:
fmt.Println("pub is of type ECDSA:", pub)
case ed25519.PublicKey:
fmt.Println("pub is of type Ed25519:", pub)
default:
panic("unknown type of public key")
}
}

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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package x509
// RFC 1423 describes the encryption of PEM blocks. The algorithm used to
// generate a key from the password was derived by looking at the OpenSSL
// implementation.
import (
"crypto/aes"
"crypto/cipher"
"crypto/des"
"crypto/md5"
"encoding/hex"
"encoding/pem"
"errors"
"io"
"strings"
)
type PEMCipher int
// Possible values for the EncryptPEMBlock encryption algorithm.
const (
_ PEMCipher = iota
PEMCipherDES
PEMCipher3DES
PEMCipherAES128
PEMCipherAES192
PEMCipherAES256
)
// rfc1423Algo holds a method for enciphering a PEM block.
type rfc1423Algo struct {
cipher PEMCipher
name string
cipherFunc func(key []byte) (cipher.Block, error)
keySize int
blockSize int
}
// rfc1423Algos holds a slice of the possible ways to encrypt a PEM
// block. The ivSize numbers were taken from the OpenSSL source.
var rfc1423Algos = []rfc1423Algo{{
cipher: PEMCipherDES,
name: "DES-CBC",
cipherFunc: des.NewCipher,
keySize: 8,
blockSize: des.BlockSize,
}, {
cipher: PEMCipher3DES,
name: "DES-EDE3-CBC",
cipherFunc: des.NewTripleDESCipher,
keySize: 24,
blockSize: des.BlockSize,
}, {
cipher: PEMCipherAES128,
name: "AES-128-CBC",
cipherFunc: aes.NewCipher,
keySize: 16,
blockSize: aes.BlockSize,
}, {
cipher: PEMCipherAES192,
name: "AES-192-CBC",
cipherFunc: aes.NewCipher,
keySize: 24,
blockSize: aes.BlockSize,
}, {
cipher: PEMCipherAES256,
name: "AES-256-CBC",
cipherFunc: aes.NewCipher,
keySize: 32,
blockSize: aes.BlockSize,
},
}
// deriveKey uses a key derivation function to stretch the password into a key
// with the number of bits our cipher requires. This algorithm was derived from
// the OpenSSL source.
func (c rfc1423Algo) deriveKey(password, salt []byte) []byte {
hash := md5.New()
out := make([]byte, c.keySize)
var digest []byte
for i := 0; i < len(out); i += len(digest) {
hash.Reset()
hash.Write(digest)
hash.Write(password)
hash.Write(salt)
digest = hash.Sum(digest[:0])
copy(out[i:], digest)
}
return out
}
// IsEncryptedPEMBlock returns if the PEM block is password encrypted.
func IsEncryptedPEMBlock(b *pem.Block) bool {
_, ok := b.Headers["DEK-Info"]
return ok
}
// IncorrectPasswordError is returned when an incorrect password is detected.
var IncorrectPasswordError = errors.New("x509: decryption password incorrect")
// DecryptPEMBlock takes a password encrypted PEM block and the password used to
// encrypt it and returns a slice of decrypted DER encoded bytes. It inspects
// the DEK-Info header to determine the algorithm used for decryption. If no
// DEK-Info header is present, an error is returned. If an incorrect password
// is detected an IncorrectPasswordError is returned. Because of deficiencies
// in the encrypted-PEM format, it's not always possible to detect an incorrect
// password. In these cases no error will be returned but the decrypted DER
// bytes will be random noise.
func DecryptPEMBlock(b *pem.Block, password []byte) ([]byte, error) {
dek, ok := b.Headers["DEK-Info"]
if !ok {
return nil, errors.New("x509: no DEK-Info header in block")
}
idx := strings.Index(dek, ",")
if idx == -1 {
return nil, errors.New("x509: malformed DEK-Info header")
}
mode, hexIV := dek[:idx], dek[idx+1:]
ciph := cipherByName(mode)
if ciph == nil {
return nil, errors.New("x509: unknown encryption mode")
}
iv, err := hex.DecodeString(hexIV)
if err != nil {
return nil, err
}
if len(iv) != ciph.blockSize {
return nil, errors.New("x509: incorrect IV size")
}
// Based on the OpenSSL implementation. The salt is the first 8 bytes
// of the initialization vector.
key := ciph.deriveKey(password, iv[:8])
block, err := ciph.cipherFunc(key)
if err != nil {
return nil, err
}
if len(b.Bytes)%block.BlockSize() != 0 {
return nil, errors.New("x509: encrypted PEM data is not a multiple of the block size")
}
data := make([]byte, len(b.Bytes))
dec := cipher.NewCBCDecrypter(block, iv)
dec.CryptBlocks(data, b.Bytes)
// Blocks are padded using a scheme where the last n bytes of padding are all
// equal to n. It can pad from 1 to blocksize bytes inclusive. See RFC 1423.
// For example:
// [x y z 2 2]
// [x y 7 7 7 7 7 7 7]
// If we detect a bad padding, we assume it is an invalid password.
dlen := len(data)
if dlen == 0 || dlen%ciph.blockSize != 0 {
return nil, errors.New("x509: invalid padding")
}
last := int(data[dlen-1])
if dlen < last {
return nil, IncorrectPasswordError
}
if last == 0 || last > ciph.blockSize {
return nil, IncorrectPasswordError
}
for _, val := range data[dlen-last:] {
if int(val) != last {
return nil, IncorrectPasswordError
}
}
return data[:dlen-last], nil
}
// EncryptPEMBlock returns a PEM block of the specified type holding the
// given DER-encoded data encrypted with the specified algorithm and
// password.
func EncryptPEMBlock(rand io.Reader, blockType string, data, password []byte, alg PEMCipher) (*pem.Block, error) {
ciph := cipherByKey(alg)
if ciph == nil {
return nil, errors.New("x509: unknown encryption mode")
}
iv := make([]byte, ciph.blockSize)
if _, err := io.ReadFull(rand, iv); err != nil {
return nil, errors.New("x509: cannot generate IV: " + err.Error())
}
// The salt is the first 8 bytes of the initialization vector,
// matching the key derivation in DecryptPEMBlock.
key := ciph.deriveKey(password, iv[:8])
block, err := ciph.cipherFunc(key)
if err != nil {
return nil, err
}
enc := cipher.NewCBCEncrypter(block, iv)
pad := ciph.blockSize - len(data)%ciph.blockSize
encrypted := make([]byte, len(data), len(data)+pad)
// We could save this copy by encrypting all the whole blocks in
// the data separately, but it doesn't seem worth the additional
// code.
copy(encrypted, data)
// See RFC 1423, Section 1.1.
for i := 0; i < pad; i++ {
encrypted = append(encrypted, byte(pad))
}
enc.CryptBlocks(encrypted, encrypted)
return &pem.Block{
Type: blockType,
Headers: map[string]string{
"Proc-Type": "4,ENCRYPTED",
"DEK-Info": ciph.name + "," + hex.EncodeToString(iv),
},
Bytes: encrypted,
}, nil
}
func cipherByName(name string) *rfc1423Algo {
for i := range rfc1423Algos {
alg := &rfc1423Algos[i]
if alg.name == name {
return alg
}
}
return nil
}
func cipherByKey(key PEMCipher) *rfc1423Algo {
for i := range rfc1423Algos {
alg := &rfc1423Algos[i]
if alg.cipher == key {
return alg
}
}
return nil
}

249
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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package x509
import (
"bytes"
"crypto/rand"
"encoding/base64"
"encoding/pem"
"strings"
"testing"
)
func TestDecrypt(t *testing.T) {
for i, data := range testData {
t.Logf("test %v. %v", i, data.kind)
block, rest := pem.Decode(data.pemData)
if len(rest) > 0 {
t.Error("extra data")
}
der, err := DecryptPEMBlock(block, data.password)
if err != nil {
t.Error("decrypt failed: ", err)
continue
}
if _, err := ParsePKCS1PrivateKey(der); err != nil {
t.Error("invalid private key: ", err)
}
plainDER, err := base64.StdEncoding.DecodeString(data.plainDER)
if err != nil {
t.Fatal("cannot decode test DER data: ", err)
}
if !bytes.Equal(der, plainDER) {
t.Error("data mismatch")
}
}
}
func TestEncrypt(t *testing.T) {
for i, data := range testData {
t.Logf("test %v. %v", i, data.kind)
plainDER, err := base64.StdEncoding.DecodeString(data.plainDER)
if err != nil {
t.Fatal("cannot decode test DER data: ", err)
}
password := []byte("kremvax1")
block, err := EncryptPEMBlock(rand.Reader, "RSA PRIVATE KEY", plainDER, password, data.kind)
if err != nil {
t.Error("encrypt: ", err)
continue
}
if !IsEncryptedPEMBlock(block) {
t.Error("PEM block does not appear to be encrypted")
}
if block.Type != "RSA PRIVATE KEY" {
t.Errorf("unexpected block type; got %q want %q", block.Type, "RSA PRIVATE KEY")
}
if block.Headers["Proc-Type"] != "4,ENCRYPTED" {
t.Errorf("block does not have correct Proc-Type header")
}
der, err := DecryptPEMBlock(block, password)
if err != nil {
t.Error("decrypt: ", err)
continue
}
if !bytes.Equal(der, plainDER) {
t.Errorf("data mismatch")
}
}
}
var testData = []struct {
kind PEMCipher
password []byte
pemData []byte
plainDER string
}{
{
kind: PEMCipherDES,
password: []byte("asdf"),
pemData: []byte(testingKey(`
-----BEGIN RSA TESTING KEY-----
Proc-Type: 4,ENCRYPTED
DEK-Info: DES-CBC,34F09A4FC8DE22B5
WXxy8kbZdiZvANtKvhmPBLV7eVFj2A5z6oAxvI9KGyhG0ZK0skfnt00C24vfU7m5
ICXeoqP67lzJ18xCzQfHjDaBNs53DSDT+Iz4e8QUep1xQ30+8QKX2NA2coee3nwc
6oM1cuvhNUDemBH2i3dKgMVkfaga0zQiiOq6HJyGSncCMSruQ7F9iWEfRbFcxFCx
qtHb1kirfGKEtgWTF+ynyco6+2gMXNu70L7nJcnxnV/RLFkHt7AUU1yrclxz7eZz
XOH9VfTjb52q/I8Suozq9coVQwg4tXfIoYUdT//O+mB7zJb9HI9Ps77b9TxDE6Gm
4C9brwZ3zg2vqXcwwV6QRZMtyll9rOpxkbw6NPlpfBqkc3xS51bbxivbO/Nve4KD
r12ymjFNF4stXCfJnNqKoZ50BHmEEUDu5Wb0fpVn82XrGw7CYc4iug==
-----END RSA TESTING KEY-----`)),
plainDER: `
MIIBPAIBAAJBAPASZe+tCPU6p80AjHhDkVsLYa51D35e/YGa8QcZyooeZM8EHozo
KD0fNiKI+53bHdy07N+81VQ8/ejPcRoXPlsCAwEAAQJBAMTxIuSq27VpR+zZ7WJf
c6fvv1OBvpMZ0/d1pxL/KnOAgq2rD5hDtk9b0LGhTPgQAmrrMTKuSeGoIuYE+gKQ
QvkCIQD+GC1m+/do+QRurr0uo46Kx1LzLeSCrjBk34wiOp2+dwIhAPHfTLRXS2fv
7rljm0bYa4+eDZpz+E8RcXEgzhhvcQQ9AiAI5eHZJGOyml3MXnQjiPi55WcDOw0w
glcRgT6QCEtz2wIhANSyqaFtosIkHKqrDUGfz/bb5tqMYTAnBruVPaf/WEOBAiEA
9xORWeRG1tRpso4+dYy4KdDkuLPIO01KY6neYGm3BCM=`,
},
{
kind: PEMCipher3DES,
password: []byte("asdf"),
pemData: []byte(testingKey(`
-----BEGIN RSA TESTING KEY-----
Proc-Type: 4,ENCRYPTED
DEK-Info: DES-EDE3-CBC,C1F4A6A03682C2C7
0JqVdBEH6iqM7drTkj+e2W/bE3LqakaiWhb9WUVonFkhyu8ca/QzebY3b5gCvAZQ
YwBvDcT/GHospKqPx+cxDHJNsUASDZws6bz8ZXWJGwZGExKzr0+Qx5fgXn44Ms3x
8g1ENFuTXtxo+KoNK0zuAMAqp66Llcds3Fjl4XR18QaD0CrVNAfOdgATWZm5GJxk
Fgx5f84nT+/ovvreG+xeOzWgvtKo0UUZVrhGOgfKLpa57adumcJ6SkUuBtEFpZFB
ldw5w7WC7d13x2LsRkwo8ZrDKgIV+Y9GNvhuCCkTzNP0V3gNeJpd201HZHR+9n3w
3z0VjR/MGqsfcy1ziEWMNOO53At3zlG6zP05aHMnMcZoVXadEK6L1gz++inSSDCq
gI0UJP4e3JVB7AkgYymYAwiYALAkoEIuanxoc50njJk=
-----END RSA TESTING KEY-----`)),
plainDER: `
MIIBOwIBAAJBANOCXKdoNS/iP/MAbl9cf1/SF3P+Ns7ZeNL27CfmDh0O6Zduaax5
NBiumd2PmjkaCu7lQ5JOibHfWn+xJsc3kw0CAwEAAQJANX/W8d1Q/sCqzkuAn4xl
B5a7qfJWaLHndu1QRLNTRJPn0Ee7OKJ4H0QKOhQM6vpjRrz+P2u9thn6wUxoPsef
QQIhAP/jCkfejFcy4v15beqKzwz08/tslVjF+Yq41eJGejmxAiEA05pMoqfkyjcx
fyvGhpoOyoCp71vSGUfR2I9CR65oKh0CIC1Msjs66LlfJtQctRq6bCEtFCxEcsP+
eEjYo/Sk6WphAiEAxpgWPMJeU/shFT28gS+tmhjPZLpEoT1qkVlC14u0b3ECIQDX
tZZZxCtPAm7shftEib0VU77Lk8MsXJcx2C4voRsjEw==`,
},
{
kind: PEMCipherAES128,
password: []byte("asdf"),
pemData: []byte(testingKey(`
-----BEGIN RSA TESTING KEY-----
Proc-Type: 4,ENCRYPTED
DEK-Info: AES-128-CBC,D4492E793FC835CC038A728ED174F78A
EyfQSzXSjv6BaNH+NHdXRlkHdimpF9izWlugVJAPApgXrq5YldPe2aGIOFXyJ+QE
ZIG20DYqaPzJRjTEbPNZ6Es0S2JJ5yCpKxwJuDkgJZKtF39Q2i36JeGbSZQIuWJE
GZbBpf1jDH/pr0iGonuAdl2PCCZUiy+8eLsD2tyviHUkFLOB+ykYoJ5t8ngZ/B6D
33U43LLb7+9zD4y3Q9OVHqBFGyHcxCY9+9Qh4ZnFp7DTf6RY5TNEvE3s4g6aDpBs
3NbvRVvYTgs8K9EPk4K+5R+P2kD8J8KvEIGxVa1vz8QoCJ/jr7Ka2rvNgPCex5/E
080LzLHPCrXKdlr/f50yhNWq08ZxMWQFkui+FDHPDUaEELKAXV8/5PDxw80Rtybo
AVYoCVIbZXZCuCO81op8UcOgEpTtyU5Lgh3Mw5scQL0=
-----END RSA TESTING KEY-----`)),
plainDER: `
MIIBOgIBAAJBAMBlj5FxYtqbcy8wY89d/S7n0+r5MzD9F63BA/Lpl78vQKtdJ5dT
cDGh/rBt1ufRrNp0WihcmZi7Mpl/3jHjiWECAwEAAQJABNOHYnKhtDIqFYj1OAJ3
k3GlU0OlERmIOoeY/cL2V4lgwllPBEs7r134AY4wMmZSBUj8UR/O4SNO668ElKPE
cQIhAOuqY7/115x5KCdGDMWi+jNaMxIvI4ETGwV40ykGzqlzAiEA0P9oEC3m9tHB
kbpjSTxaNkrXxDgdEOZz8X0uOUUwHNsCIAwzcSCiGLyYJTULUmP1ESERfW1mlV78
XzzESaJpIM/zAiBQkSTcl9VhcJreQqvjn5BnPZLP4ZHS4gPwJAGdsj5J4QIhAOVR
B3WlRNTXR2WsJ5JdByezg9xzdXzULqmga0OE339a`,
},
{
kind: PEMCipherAES192,
password: []byte("asdf"),
pemData: []byte(testingKey(`
-----BEGIN RSA TESTING KEY-----
Proc-Type: 4,ENCRYPTED
DEK-Info: AES-192-CBC,E2C9FB02BCA23ADE1829F8D8BC5F5369
cqVslvHqDDM6qwU6YjezCRifXmKsrgEev7ng6Qs7UmDJOpHDgJQZI9fwMFUhIyn5
FbCu1SHkLMW52Ld3CuEqMnzWMlhPrW8tFvUOrMWPYSisv7nNq88HobZEJcUNL2MM
Y15XmHW6IJwPqhKyLHpWXyOCVEh4ODND2nV15PCoi18oTa475baxSk7+1qH7GuIs
Rb7tshNTMqHbCpyo9Rn3UxeFIf9efdl8YLiMoIqc7J8E5e9VlbeQSdLMQOgDAQJG
ReUtTw8exmKsY4gsSjhkg5uiw7/ZB1Ihto0qnfQJgjGc680qGkT1d6JfvOfeYAk6
xn5RqS/h8rYAYm64KnepfC9vIujo4NqpaREDmaLdX5MJPQ+SlytITQvgUsUq3q/t
Ss85xjQEZH3hzwjQqdJvmA4hYP6SUjxYpBM+02xZ1Xw=
-----END RSA TESTING KEY-----`)),
plainDER: `
MIIBOwIBAAJBAMGcRrZiNNmtF20zyS6MQ7pdGx17aFDl+lTl+qnLuJRUCMUG05xs
OmxmL/O1Qlf+bnqR8Bgg65SfKg21SYuLhiMCAwEAAQJBAL94uuHyO4wux2VC+qpj
IzPykjdU7XRcDHbbvksf4xokSeUFjjD3PB0Qa83M94y89ZfdILIqS9x5EgSB4/lX
qNkCIQD6cCIqLfzq/lYbZbQgAAjpBXeQVYsbvVtJrPrXJAlVVQIhAMXpDKMeFPMn
J0g2rbx1gngx0qOa5r5iMU5w/noN4W2XAiBjf+WzCG5yFvazD+dOx3TC0A8+4x3P
uZ3pWbaXf5PNuQIgAcdXarvhelH2w2piY1g3BPeFqhzBSCK/yLGxR82KIh8CIQDD
+qGKsd09NhQ/G27y/DARzOYtml1NvdmCQAgsDIIOLA==`,
},
{
kind: PEMCipherAES256,
password: []byte("asdf"),
pemData: []byte(testingKey(`
-----BEGIN RSA TESTING KEY-----
Proc-Type: 4,ENCRYPTED
DEK-Info: AES-256-CBC,8E7ED5CD731902CE938957A886A5FFBD
4Mxr+KIzRVwoOP0wwq6caSkvW0iS+GE2h2Ov/u+n9ZTMwL83PRnmjfjzBgfRZLVf
JFPXxUK26kMNpIdssNnqGOds+DhB+oSrsNKoxgxSl5OBoYv9eJTVYm7qOyAFIsjr
DRKAcjYCmzfesr7PVTowwy0RtHmYwyXMGDlAzzZrEvaiySFFmMyKKvtoavwaFoc7
Pz3RZScwIuubzTGJ1x8EzdffYOsdCa9Mtgpp3L136+23dOd6L/qK2EG2fzrJSHs/
2XugkleBFSMKzEp9mxXKRfa++uidQvMZTFLDK9w5YjrRvMBo/l2BoZIsq0jAIE1N
sv5Z/KwlX+3MDEpPQpUwGPlGGdLnjI3UZ+cjgqBcoMiNc6HfgbBgYJSU6aDSHuCk
clCwByxWkBNgJ2GrkwNrF26v+bGJJJNR4SKouY1jQf0=
-----END RSA TESTING KEY-----`)),
plainDER: `
MIIBOgIBAAJBAKy3GFkstoCHIEeUU/qO8207m8WSrjksR+p9B4tf1w5k+2O1V/GY
AQ5WFCApItcOkQe/I0yZZJk/PmCqMzSxrc8CAwEAAQJAOCAz0F7AW9oNelVQSP8F
Sfzx7O1yom+qWyAQQJF/gFR11gpf9xpVnnyu1WxIRnDUh1LZwUsjwlDYb7MB74id
oQIhANPcOiLwOPT4sIUpRM5HG6BF1BI7L77VpyGVk8xNP7X/AiEA0LMHZtk4I+lJ
nClgYp4Yh2JZ1Znbu7IoQMCEJCjwKDECIGd8Dzm5tViTkUW6Hs3Tlf73nNs65duF
aRnSglss8I3pAiEAonEnKruawgD8RavDFR+fUgmQiPz4FnGGeVgfwpGG1JECIBYq
PXHYtPqxQIbD2pScR5qum7iGUh11lEUPkmt+2uqS`,
},
{
// generated with:
// openssl genrsa -aes128 -passout pass:asdf -out server.orig.key 128
kind: PEMCipherAES128,
password: []byte("asdf"),
pemData: []byte(testingKey(`
-----BEGIN RSA TESTING KEY-----
Proc-Type: 4,ENCRYPTED
DEK-Info: AES-128-CBC,74611ABC2571AF11B1BF9B69E62C89E7
6ei/MlytjE0FFgZOGQ+jrwomKfpl8kdefeE0NSt/DMRrw8OacHAzBNi3pPEa0eX3
eND9l7C9meCirWovjj9QWVHrXyugFuDIqgdhQ8iHTgCfF3lrmcttVrbIfMDw+smD
hTP8O1mS/MHl92NE0nhv0w==
-----END RSA TESTING KEY-----`)),
plainDER: `
MGMCAQACEQC6ssxmYuauuHGOCDAI54RdAgMBAAECEQCWIn6Yv2O+kBcDF7STctKB
AgkA8SEfu/2i3g0CCQDGNlXbBHX7kQIIK3Ww5o0cYbECCQDCimPb0dYGsQIIeQ7A
jryIst8=`,
},
}
var incompleteBlockPEM = testingKey(`
-----BEGIN RSA TESTING KEY-----
Proc-Type: 4,ENCRYPTED
DEK-Info: AES-128-CBC,74611ABC2571AF11B1BF9B69E62C89E7
6L8yXK2MTQUWBk4ZD6OvCiYp+mXyR1594TQ1K38MxGvDw5pwcDME2Lek8RrR5fd40P2XsL2Z4KKt
ai+OP1BZUetfK6AW4MiqB2FDyIdOAJ8XeWuZy21Wtsh8wPD6yYOFM/w7WZL8weX3Y0TSeG/T
-----END RSA TESTING KEY-----`)
func TestIncompleteBlock(t *testing.T) {
// incompleteBlockPEM contains ciphertext that is not a multiple of the
// block size. This previously panicked. See #11215.
block, _ := pem.Decode([]byte(incompleteBlockPEM))
_, err := DecryptPEMBlock(block, []byte("foo"))
if err == nil {
t.Fatal("Bad PEM data decrypted successfully")
}
const expectedSubstr = "block size"
if e := err.Error(); !strings.Contains(e, expectedSubstr) {
t.Fatalf("Expected error containing %q but got: %q", expectedSubstr, e)
}
}
func testingKey(s string) string { return strings.ReplaceAll(s, "TESTING KEY", "PRIVATE KEY") }

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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package x509
import (
"crypto/rsa"
"encoding/asn1"
"errors"
"math/big"
)
// pkcs1PrivateKey is a structure which mirrors the PKCS#1 ASN.1 for an RSA private key.
type pkcs1PrivateKey struct {
Version int
N *big.Int
E int
D *big.Int
P *big.Int
Q *big.Int
// We ignore these values, if present, because rsa will calculate them.
Dp *big.Int `asn1:"optional"`
Dq *big.Int `asn1:"optional"`
Qinv *big.Int `asn1:"optional"`
AdditionalPrimes []pkcs1AdditionalRSAPrime `asn1:"optional,omitempty"`
}
type pkcs1AdditionalRSAPrime struct {
Prime *big.Int
// We ignore these values because rsa will calculate them.
Exp *big.Int
Coeff *big.Int
}
// pkcs1PublicKey reflects the ASN.1 structure of a PKCS#1 public key.
type pkcs1PublicKey struct {
N *big.Int
E int
}
// ParsePKCS1PrivateKey parses an RSA private key in PKCS#1, ASN.1 DER form.
//
// This kind of key is commonly encoded in PEM blocks of type "RSA PRIVATE KEY".
func ParsePKCS1PrivateKey(der []byte) (*rsa.PrivateKey, error) {
var priv pkcs1PrivateKey
rest, err := asn1.Unmarshal(der, &priv)
if len(rest) > 0 {
return nil, asn1.SyntaxError{Msg: "trailing data"}
}
if err != nil {
if _, err := asn1.Unmarshal(der, &ecPrivateKey{}); err == nil {
return nil, errors.New("x509: failed to parse private key (use ParseECPrivateKey instead for this key format)")
}
if _, err := asn1.Unmarshal(der, &pkcs8{}); err == nil {
return nil, errors.New("x509: failed to parse private key (use ParsePKCS8PrivateKey instead for this key format)")
}
return nil, err
}
if priv.Version > 1 {
return nil, errors.New("x509: unsupported private key version")
}
if priv.N.Sign() <= 0 || priv.D.Sign() <= 0 || priv.P.Sign() <= 0 || priv.Q.Sign() <= 0 {
return nil, errors.New("x509: private key contains zero or negative value")
}
key := new(rsa.PrivateKey)
key.PublicKey = rsa.PublicKey{
E: priv.E,
N: priv.N,
}
key.D = priv.D
key.Primes = make([]*big.Int, 2+len(priv.AdditionalPrimes))
key.Primes[0] = priv.P
key.Primes[1] = priv.Q
for i, a := range priv.AdditionalPrimes {
if a.Prime.Sign() <= 0 {
return nil, errors.New("x509: private key contains zero or negative prime")
}
key.Primes[i+2] = a.Prime
// We ignore the other two values because rsa will calculate
// them as needed.
}
err = key.Validate()
if err != nil {
return nil, err
}
key.Precompute()
return key, nil
}
// MarshalPKCS1PrivateKey converts an RSA private key to PKCS#1, ASN.1 DER form.
//
// This kind of key is commonly encoded in PEM blocks of type "RSA PRIVATE KEY".
// For a more flexible key format which is not RSA specific, use
// MarshalPKCS8PrivateKey.
func MarshalPKCS1PrivateKey(key *rsa.PrivateKey) []byte {
key.Precompute()
version := 0
if len(key.Primes) > 2 {
version = 1
}
priv := pkcs1PrivateKey{
Version: version,
N: key.N,
E: key.PublicKey.E,
D: key.D,
P: key.Primes[0],
Q: key.Primes[1],
Dp: key.Precomputed.Dp,
Dq: key.Precomputed.Dq,
Qinv: key.Precomputed.Qinv,
}
priv.AdditionalPrimes = make([]pkcs1AdditionalRSAPrime, len(key.Precomputed.CRTValues))
for i, values := range key.Precomputed.CRTValues {
priv.AdditionalPrimes[i].Prime = key.Primes[2+i]
priv.AdditionalPrimes[i].Exp = values.Exp
priv.AdditionalPrimes[i].Coeff = values.Coeff
}
b, _ := asn1.Marshal(priv)
return b
}
// ParsePKCS1PublicKey parses an RSA public key in PKCS#1, ASN.1 DER form.
//
// This kind of key is commonly encoded in PEM blocks of type "RSA PUBLIC KEY".
func ParsePKCS1PublicKey(der []byte) (*rsa.PublicKey, error) {
var pub pkcs1PublicKey
rest, err := asn1.Unmarshal(der, &pub)
if err != nil {
if _, err := asn1.Unmarshal(der, &publicKeyInfo{}); err == nil {
return nil, errors.New("x509: failed to parse public key (use ParsePKIXPublicKey instead for this key format)")
}
return nil, err
}
if len(rest) > 0 {
return nil, asn1.SyntaxError{Msg: "trailing data"}
}
if pub.N.Sign() <= 0 || pub.E <= 0 {
return nil, errors.New("x509: public key contains zero or negative value")
}
if pub.E > 1<<31-1 {
return nil, errors.New("x509: public key contains large public exponent")
}
return &rsa.PublicKey{
E: pub.E,
N: pub.N,
}, nil
}
// MarshalPKCS1PublicKey converts an RSA public key to PKCS#1, ASN.1 DER form.
//
// This kind of key is commonly encoded in PEM blocks of type "RSA PUBLIC KEY".
func MarshalPKCS1PublicKey(key *rsa.PublicKey) []byte {
derBytes, _ := asn1.Marshal(pkcs1PublicKey{
N: key.N,
E: key.E,
})
return derBytes
}

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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package x509
import (
"crypto/ecdsa"
"crypto/ed25519"
"crypto/rsa"
"crypto/x509/pkix"
"encoding/asn1"
"errors"
"fmt"
)
// pkcs8 reflects an ASN.1, PKCS#8 PrivateKey. See
// ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-8/pkcs-8v1_2.asn
// and RFC 5208.
type pkcs8 struct {
Version int
Algo pkix.AlgorithmIdentifier
PrivateKey []byte
// optional attributes omitted.
}
// ParsePKCS8PrivateKey parses an unencrypted private key in PKCS#8, ASN.1 DER form.
//
// It returns a *rsa.PrivateKey, a *ecdsa.PrivateKey, or a ed25519.PrivateKey.
// More types might be supported in the future.
//
// This kind of key is commonly encoded in PEM blocks of type "PRIVATE KEY".
func ParsePKCS8PrivateKey(der []byte) (key interface{}, err error) {
var privKey pkcs8
if _, err := asn1.Unmarshal(der, &privKey); err != nil {
if _, err := asn1.Unmarshal(der, &ecPrivateKey{}); err == nil {
return nil, errors.New("x509: failed to parse private key (use ParseECPrivateKey instead for this key format)")
}
if _, err := asn1.Unmarshal(der, &pkcs1PrivateKey{}); err == nil {
return nil, errors.New("x509: failed to parse private key (use ParsePKCS1PrivateKey instead for this key format)")
}
return nil, err
}
switch {
case privKey.Algo.Algorithm.Equal(oidPublicKeyRSA):
key, err = ParsePKCS1PrivateKey(privKey.PrivateKey)
if err != nil {
return nil, errors.New("x509: failed to parse RSA private key embedded in PKCS#8: " + err.Error())
}
return key, nil
case privKey.Algo.Algorithm.Equal(oidPublicKeyECDSA):
bytes := privKey.Algo.Parameters.FullBytes
namedCurveOID := new(asn1.ObjectIdentifier)
if _, err := asn1.Unmarshal(bytes, namedCurveOID); err != nil {
namedCurveOID = nil
}
key, err = parseECPrivateKey(namedCurveOID, privKey.PrivateKey)
if err != nil {
return nil, errors.New("x509: failed to parse EC private key embedded in PKCS#8: " + err.Error())
}
return key, nil
case privKey.Algo.Algorithm.Equal(oidPublicKeyEd25519):
if l := len(privKey.Algo.Parameters.FullBytes); l != 0 {
return nil, errors.New("x509: invalid Ed25519 private key parameters")
}
var curvePrivateKey []byte
if _, err := asn1.Unmarshal(privKey.PrivateKey, &curvePrivateKey); err != nil {
return nil, fmt.Errorf("x509: invalid Ed25519 private key: %v", err)
}
if l := len(curvePrivateKey); l != ed25519.SeedSize {
return nil, fmt.Errorf("x509: invalid Ed25519 private key length: %d", l)
}
return ed25519.NewKeyFromSeed(curvePrivateKey), nil
default:
return nil, fmt.Errorf("x509: PKCS#8 wrapping contained private key with unknown algorithm: %v", privKey.Algo.Algorithm)
}
}
// MarshalPKCS8PrivateKey converts a private key to PKCS#8, ASN.1 DER form.
//
// The following key types are currently supported: *rsa.PrivateKey, *ecdsa.PrivateKey
// and ed25519.PrivateKey. Unsupported key types result in an error.
//
// This kind of key is commonly encoded in PEM blocks of type "PRIVATE KEY".
func MarshalPKCS8PrivateKey(key interface{}) ([]byte, error) {
var privKey pkcs8
switch k := key.(type) {
case *rsa.PrivateKey:
privKey.Algo = pkix.AlgorithmIdentifier{
Algorithm: oidPublicKeyRSA,
Parameters: asn1.NullRawValue,
}
privKey.PrivateKey = MarshalPKCS1PrivateKey(k)
case *ecdsa.PrivateKey:
oid, ok := oidFromNamedCurve(k.Curve)
if !ok {
return nil, errors.New("x509: unknown curve while marshaling to PKCS#8")
}
oidBytes, err := asn1.Marshal(oid)
if err != nil {
return nil, errors.New("x509: failed to marshal curve OID: " + err.Error())
}
privKey.Algo = pkix.AlgorithmIdentifier{
Algorithm: oidPublicKeyECDSA,
Parameters: asn1.RawValue{
FullBytes: oidBytes,
},
}
if privKey.PrivateKey, err = marshalECPrivateKeyWithOID(k, nil); err != nil {
return nil, errors.New("x509: failed to marshal EC private key while building PKCS#8: " + err.Error())
}
case ed25519.PrivateKey:
privKey.Algo = pkix.AlgorithmIdentifier{
Algorithm: oidPublicKeyEd25519,
}
curvePrivateKey, err := asn1.Marshal(k.Seed())
if err != nil {
return nil, fmt.Errorf("x509: failed to marshal private key: %v", err)
}
privKey.PrivateKey = curvePrivateKey
default:
return nil, fmt.Errorf("x509: unknown key type while marshaling PKCS#8: %T", key)
}
return asn1.Marshal(privKey)
}

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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package x509
import (
"bytes"
"crypto/ecdsa"
"crypto/ed25519"
"crypto/elliptic"
"crypto/rsa"
"encoding/hex"
"reflect"
"strings"
"testing"
)
// Generated using:
// openssl genrsa 1024 | openssl pkcs8 -topk8 -nocrypt
var pkcs8RSAPrivateKeyHex = `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`
// Generated using:
// openssl ecparam -genkey -name secp224r1 | openssl pkcs8 -topk8 -nocrypt
var pkcs8P224PrivateKeyHex = `3078020100301006072a8648ce3d020106052b810400210461305f020101041cca3d72b3e88fed2684576dad9b80a9180363a5424986900e3abcab3fa13c033a0004f8f2a6372872a4e61263ed893afb919576a4cacfecd6c081a2cbc76873cf4ba8530703c6042b3a00e2205087e87d2435d2e339e25702fae1`
// Generated using:
// openssl ecparam -genkey -name secp256r1 | openssl pkcs8 -topk8 -nocrypt
var pkcs8P256PrivateKeyHex = `308187020100301306072a8648ce3d020106082a8648ce3d030107046d306b0201010420dad6b2f49ca774c36d8ae9517e935226f667c929498f0343d2424d0b9b591b43a14403420004b9c9b90095476afe7b860d8bd43568cab7bcb2eed7b8bf2fa0ce1762dd20b04193f859d2d782b1e4cbfd48492f1f533113a6804903f292258513837f07fda735`
// Generated using:
// openssl ecparam -genkey -name secp384r1 | openssl pkcs8 -topk8 -nocrypt
var pkcs8P384PrivateKeyHex = `3081b6020100301006072a8648ce3d020106052b8104002204819e30819b02010104309bf832f6aaaeacb78ce47ffb15e6fd0fd48683ae79df6eca39bfb8e33829ac94aa29d08911568684c2264a08a4ceb679a164036200049070ad4ed993c7770d700e9f6dc2baa83f63dd165b5507f98e8ff29b5d2e78ccbe05c8ddc955dbf0f7497e8222cfa49314fe4e269459f8e880147f70d785e530f2939e4bf9f838325bb1a80ad4cf59272ae0e5efe9a9dc33d874492596304bd3`
// Generated using:
// openssl ecparam -genkey -name secp521r1 | openssl pkcs8 -topk8 -nocrypt
//
// Note that OpenSSL will truncate the private key if it can (i.e. it emits it
// like an integer, even though it's an OCTET STRING field). Thus if you
// regenerate this you may, randomly, find that it's a byte shorter than
// expected and the Go test will fail to recreate it exactly.
var pkcs8P521PrivateKeyHex = `3081ee020100301006072a8648ce3d020106052b810400230481d63081d3020101044200cfe0b87113a205cf291bb9a8cd1a74ac6c7b2ebb8199aaa9a5010d8b8012276fa3c22ac913369fa61beec2a3b8b4516bc049bde4fb3b745ac11b56ab23ac52e361a1818903818600040138f75acdd03fbafa4f047a8e4b272ba9d555c667962b76f6f232911a5786a0964e5edea6bd21a6f8725720958de049c6e3e6661c1c91b227cebee916c0319ed6ca003db0a3206d372229baf9dd25d868bf81140a518114803ce40c1855074d68c4e9dab9e65efba7064c703b400f1767f217dac82715ac1f6d88c74baf47a7971de4ea`
// From RFC 8410, Section 7.
var pkcs8Ed25519PrivateKeyHex = `302e020100300506032b657004220420d4ee72dbf913584ad5b6d8f1f769f8ad3afe7c28cbf1d4fbe097a88f44755842`
func TestPKCS8(t *testing.T) {
tests := []struct {
name string
keyHex string
keyType reflect.Type
curve elliptic.Curve
}{
{
name: "RSA private key",
keyHex: pkcs8RSAPrivateKeyHex,
keyType: reflect.TypeOf(&rsa.PrivateKey{}),
},
{
name: "P-224 private key",
keyHex: pkcs8P224PrivateKeyHex,
keyType: reflect.TypeOf(&ecdsa.PrivateKey{}),
curve: elliptic.P224(),
},
{
name: "P-256 private key",
keyHex: pkcs8P256PrivateKeyHex,
keyType: reflect.TypeOf(&ecdsa.PrivateKey{}),
curve: elliptic.P256(),
},
{
name: "P-384 private key",
keyHex: pkcs8P384PrivateKeyHex,
keyType: reflect.TypeOf(&ecdsa.PrivateKey{}),
curve: elliptic.P384(),
},
{
name: "P-521 private key",
keyHex: pkcs8P521PrivateKeyHex,
keyType: reflect.TypeOf(&ecdsa.PrivateKey{}),
curve: elliptic.P521(),
},
{
name: "Ed25519 private key",
keyHex: pkcs8Ed25519PrivateKeyHex,
keyType: reflect.TypeOf(ed25519.PrivateKey{}),
},
}
for _, test := range tests {
derBytes, err := hex.DecodeString(test.keyHex)
if err != nil {
t.Errorf("%s: failed to decode hex: %s", test.name, err)
continue
}
privKey, err := ParsePKCS8PrivateKey(derBytes)
if err != nil {
t.Errorf("%s: failed to decode PKCS#8: %s", test.name, err)
continue
}
if reflect.TypeOf(privKey) != test.keyType {
t.Errorf("%s: decoded PKCS#8 returned unexpected key type: %T", test.name, privKey)
continue
}
if ecKey, isEC := privKey.(*ecdsa.PrivateKey); isEC && ecKey.Curve != test.curve {
t.Errorf("%s: decoded PKCS#8 returned unexpected curve %#v", test.name, ecKey.Curve)
continue
}
reserialised, err := MarshalPKCS8PrivateKey(privKey)
if err != nil {
t.Errorf("%s: failed to marshal into PKCS#8: %s", test.name, err)
continue
}
if !bytes.Equal(derBytes, reserialised) {
t.Errorf("%s: marshaled PKCS#8 didn't match original: got %x, want %x", test.name, reserialised, derBytes)
continue
}
}
}
const hexPKCS8TestPKCS1Key = "3082025c02010002818100b1a1e0945b9289c4d3f1329f8a982c4a2dcd59bfd372fb8085a9c517554607ebd2f7990eef216ac9f4605f71a03b04f42a5255b158cf8e0844191f5119348baa44c35056e20609bcf9510f30ead4b481c81d7865fb27b8e0090e112b717f3ee08cdfc4012da1f1f7cf2a1bc34c73a54a12b06372d09714742dd7895eadde4aa5020301000102818062b7fa1db93e993e40237de4d89b7591cc1ea1d04fed4904c643f17ae4334557b4295270d0491c161cb02a9af557978b32b20b59c267a721c4e6c956c2d147046e9ae5f2da36db0106d70021fa9343455f8f973a4b355a26fd19e6b39dee0405ea2b32deddf0f4817759ef705d02b34faab9ca93c6766e9f722290f119f34449024100d9c29a4a013a90e35fd1be14a3f747c589fac613a695282d61812a711906b8a0876c6181f0333ca1066596f57bff47e7cfcabf19c0fc69d9cd76df743038b3cb024100d0d3546fecf879b5551f2bd2c05e6385f2718a08a6face3d2aecc9d7e03645a480a46c81662c12ad6bd6901e3bd4f38029462de7290859567cdf371c79088d4f024100c254150657e460ea58573fcf01a82a4791e3d6223135c8bdfed69afe84fbe7857274f8eb5165180507455f9b4105c6b08b51fe8a481bb986a202245576b713530240045700003b7a867d0041df9547ae2e7f50248febd21c9040b12dae9c2feab0d3d4609668b208e4727a3541557f84d372ac68eaf74ce1018a4c9a0ef92682c8fd02405769731480bb3a4570abf422527c5f34bf732fa6c1e08cc322753c511ce055fac20fc770025663ad3165324314df907f1f1942f0448a7e9cdbf87ecd98b92156"
const hexPKCS8TestECKey = "3081a40201010430bdb9839c08ee793d1157886a7a758a3c8b2a17a4df48f17ace57c72c56b4723cf21dcda21d4e1ad57ff034f19fcfd98ea00706052b81040022a16403620004feea808b5ee2429cfcce13c32160e1c960990bd050bb0fdf7222f3decd0a55008e32a6aa3c9062051c4cba92a7a3b178b24567412d43cdd2f882fa5addddd726fe3e208d2c26d733a773a597abb749714df7256ead5105fa6e7b3650de236b50"
var pkcs8MismatchKeyTests = []struct {
hexKey string
errorContains string
}{
{hexKey: hexPKCS8TestECKey, errorContains: "use ParseECPrivateKey instead"},
{hexKey: hexPKCS8TestPKCS1Key, errorContains: "use ParsePKCS1PrivateKey instead"},
}
func TestPKCS8MismatchKeyFormat(t *testing.T) {
for i, test := range pkcs8MismatchKeyTests {
derBytes, _ := hex.DecodeString(test.hexKey)
_, err := ParsePKCS8PrivateKey(derBytes)
if !strings.Contains(err.Error(), test.errorContains) {
t.Errorf("#%d: expected error containing %q, got %s", i, test.errorContains, err)
}
}
}

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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package x509
import "sync"
var (
once sync.Once
systemRoots *CertPool
systemRootsErr error
)
func systemRootsPool() *CertPool {
once.Do(initSystemRoots)
return systemRoots
}
func initSystemRoots() {
systemRoots, systemRootsErr = loadSystemRoots()
if systemRootsErr != nil {
systemRoots = nil
}
}

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// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package x509
// Possible certificate files; stop after finding one.
var certFiles = []string{
"/var/ssl/certs/ca-bundle.crt",
}

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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build dragonfly freebsd netbsd openbsd
package x509
// Possible certificate files; stop after finding one.
var certFiles = []string{
"/usr/local/etc/ssl/cert.pem", // FreeBSD
"/etc/ssl/cert.pem", // OpenBSD
"/usr/local/share/certs/ca-root-nss.crt", // DragonFly
"/etc/openssl/certs/ca-certificates.crt", // NetBSD
}

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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build cgo,!arm64,!ios
package x509
/*
#cgo CFLAGS: -mmacosx-version-min=10.11
#cgo LDFLAGS: -framework CoreFoundation -framework Security
#include <errno.h>
#include <sys/sysctl.h>
#include <CoreFoundation/CoreFoundation.h>
#include <Security/Security.h>
static Boolean isSSLPolicy(SecPolicyRef policyRef) {
if (!policyRef) {
return false;
}
CFDictionaryRef properties = SecPolicyCopyProperties(policyRef);
if (properties == NULL) {
return false;
}
Boolean isSSL = false;
CFTypeRef value = NULL;
if (CFDictionaryGetValueIfPresent(properties, kSecPolicyOid, (const void **)&value)) {
isSSL = CFEqual(value, kSecPolicyAppleSSL);
}
CFRelease(properties);
return isSSL;
}
// sslTrustSettingsResult obtains the final kSecTrustSettingsResult value
// for a certificate in the user or admin domain, combining usage constraints
// for the SSL SecTrustSettingsPolicy, ignoring SecTrustSettingsKeyUsage and
// kSecTrustSettingsAllowedError.
// https://developer.apple.com/documentation/security/1400261-sectrustsettingscopytrustsetting
static SInt32 sslTrustSettingsResult(SecCertificateRef cert) {
CFArrayRef trustSettings = NULL;
OSStatus err = SecTrustSettingsCopyTrustSettings(cert, kSecTrustSettingsDomainUser, &trustSettings);
// According to Apple's SecTrustServer.c, "user trust settings overrule admin trust settings",
// but the rules of the override are unclear. Let's assume admin trust settings are applicable
// if and only if user trust settings fail to load or are NULL.
if (err != errSecSuccess || trustSettings == NULL) {
if (trustSettings != NULL) CFRelease(trustSettings);
err = SecTrustSettingsCopyTrustSettings(cert, kSecTrustSettingsDomainAdmin, &trustSettings);
}
// > no trust settings [...] means "this certificate must be verified to a known trusted certificate”
// (Should this cause a fallback from user to admin domain? It's unclear.)
if (err != errSecSuccess || trustSettings == NULL) {
if (trustSettings != NULL) CFRelease(trustSettings);
return kSecTrustSettingsResultUnspecified;
}
// > An empty trust settings array means "always trust this certificate” with an
// > overall trust setting for the certificate of kSecTrustSettingsResultTrustRoot.
if (CFArrayGetCount(trustSettings) == 0) {
CFRelease(trustSettings);
return kSecTrustSettingsResultTrustRoot;
}
// kSecTrustSettingsResult is defined as CFSTR("kSecTrustSettingsResult"),
// but the Go linker's internal linking mode can't handle CFSTR relocations.
// Create our own dynamic string instead and release it below.
CFStringRef _kSecTrustSettingsResult = CFStringCreateWithCString(
NULL, "kSecTrustSettingsResult", kCFStringEncodingUTF8);
CFStringRef _kSecTrustSettingsPolicy = CFStringCreateWithCString(
NULL, "kSecTrustSettingsPolicy", kCFStringEncodingUTF8);
CFStringRef _kSecTrustSettingsPolicyString = CFStringCreateWithCString(
NULL, "kSecTrustSettingsPolicyString", kCFStringEncodingUTF8);
CFIndex m; SInt32 result = 0;
for (m = 0; m < CFArrayGetCount(trustSettings); m++) {
CFDictionaryRef tSetting = (CFDictionaryRef)CFArrayGetValueAtIndex(trustSettings, m);
// First, check if this trust setting is constrained to a non-SSL policy.
SecPolicyRef policyRef;
if (CFDictionaryGetValueIfPresent(tSetting, _kSecTrustSettingsPolicy, (const void**)&policyRef)) {
if (!isSSLPolicy(policyRef)) {
continue;
}
}
if (CFDictionaryContainsKey(tSetting, _kSecTrustSettingsPolicyString)) {
// Restricted to a hostname, not a root.
continue;
}
CFNumberRef cfNum;
if (CFDictionaryGetValueIfPresent(tSetting, _kSecTrustSettingsResult, (const void**)&cfNum)) {
CFNumberGetValue(cfNum, kCFNumberSInt32Type, &result);
} else {
// > If this key is not present, a default value of
// > kSecTrustSettingsResultTrustRoot is assumed.
result = kSecTrustSettingsResultTrustRoot;
}
// If multiple dictionaries match, we are supposed to "OR" them,
// the semantics of which are not clear. Since TrustRoot and TrustAsRoot
// are mutually exclusive, Deny should probably override, and Invalid and
// Unspecified be overridden, approximate this by stopping at the first
// TrustRoot, TrustAsRoot or Deny.
if (result == kSecTrustSettingsResultTrustRoot) {
break;
} else if (result == kSecTrustSettingsResultTrustAsRoot) {
break;
} else if (result == kSecTrustSettingsResultDeny) {
break;
}
}
// If trust settings are present, but none of them match the policy...
// the docs don't tell us what to do.
//
// "Trust settings for a given use apply if any of the dictionaries in the
// certificate’s trust settings array satisfies the specified use." suggests
// that it's as if there were no trust settings at all, so we should probably
// fallback to the admin trust settings. TODO.
if (result == 0) {
result = kSecTrustSettingsResultUnspecified;
}
CFRelease(_kSecTrustSettingsPolicy);
CFRelease(_kSecTrustSettingsPolicyString);
CFRelease(_kSecTrustSettingsResult);
CFRelease(trustSettings);
return result;
}
// isRootCertificate reports whether Subject and Issuer match.
static Boolean isRootCertificate(SecCertificateRef cert, CFErrorRef *errRef) {
CFDataRef subjectName = SecCertificateCopyNormalizedSubjectContent(cert, errRef);
if (*errRef != NULL) {
return false;
}
CFDataRef issuerName = SecCertificateCopyNormalizedIssuerContent(cert, errRef);
if (*errRef != NULL) {
CFRelease(subjectName);
return false;
}
Boolean equal = CFEqual(subjectName, issuerName);
CFRelease(subjectName);
CFRelease(issuerName);
return equal;
}
// CopyPEMRoots fetches the system's list of trusted X.509 root certificates
// for the kSecTrustSettingsPolicy SSL.
//
// On success it returns 0 and fills pemRoots with a CFDataRef that contains the extracted root
// certificates of the system. On failure, the function returns -1.
// Additionally, it fills untrustedPemRoots with certs that must be removed from pemRoots.
//
// Note: The CFDataRef returned in pemRoots and untrustedPemRoots must
// be released (using CFRelease) after we've consumed its content.
static int CopyPEMRoots(CFDataRef *pemRoots, CFDataRef *untrustedPemRoots, bool debugDarwinRoots) {
int i;
if (debugDarwinRoots) {
fprintf(stderr, "crypto/x509: kSecTrustSettingsResultInvalid = %d\n", kSecTrustSettingsResultInvalid);
fprintf(stderr, "crypto/x509: kSecTrustSettingsResultTrustRoot = %d\n", kSecTrustSettingsResultTrustRoot);
fprintf(stderr, "crypto/x509: kSecTrustSettingsResultTrustAsRoot = %d\n", kSecTrustSettingsResultTrustAsRoot);
fprintf(stderr, "crypto/x509: kSecTrustSettingsResultDeny = %d\n", kSecTrustSettingsResultDeny);
fprintf(stderr, "crypto/x509: kSecTrustSettingsResultUnspecified = %d\n", kSecTrustSettingsResultUnspecified);
}
// Get certificates from all domains, not just System, this lets
// the user add CAs to their "login" keychain, and Admins to add
// to the "System" keychain
SecTrustSettingsDomain domains[] = { kSecTrustSettingsDomainSystem,
kSecTrustSettingsDomainAdmin, kSecTrustSettingsDomainUser };
int numDomains = sizeof(domains)/sizeof(SecTrustSettingsDomain);
if (pemRoots == NULL || untrustedPemRoots == NULL) {
return -1;
}
CFMutableDataRef combinedData = CFDataCreateMutable(kCFAllocatorDefault, 0);
CFMutableDataRef combinedUntrustedData = CFDataCreateMutable(kCFAllocatorDefault, 0);
for (i = 0; i < numDomains; i++) {
int j;
CFArrayRef certs = NULL;
OSStatus err = SecTrustSettingsCopyCertificates(domains[i], &certs);
if (err != noErr) {
continue;
}
CFIndex numCerts = CFArrayGetCount(certs);
for (j = 0; j < numCerts; j++) {
SecCertificateRef cert = (SecCertificateRef)CFArrayGetValueAtIndex(certs, j);
if (cert == NULL) {
continue;
}
SInt32 result;
if (domains[i] == kSecTrustSettingsDomainSystem) {
// Certs found in the system domain are always trusted. If the user
// configures "Never Trust" on such a cert, it will also be found in the
// admin or user domain, causing it to be added to untrustedPemRoots. The
// Go code will then clean this up.
result = kSecTrustSettingsResultTrustRoot;
} else {
result = sslTrustSettingsResult(cert);
if (debugDarwinRoots) {
CFErrorRef errRef = NULL;
CFStringRef summary = SecCertificateCopyShortDescription(NULL, cert, &errRef);
if (errRef != NULL) {
fprintf(stderr, "crypto/x509: SecCertificateCopyShortDescription failed\n");
CFRelease(errRef);
continue;
}
CFIndex length = CFStringGetLength(summary);
CFIndex maxSize = CFStringGetMaximumSizeForEncoding(length, kCFStringEncodingUTF8) + 1;
char *buffer = malloc(maxSize);
if (CFStringGetCString(summary, buffer, maxSize, kCFStringEncodingUTF8)) {
fprintf(stderr, "crypto/x509: %s returned %d\n", buffer, (int)result);
}
free(buffer);
CFRelease(summary);
}
}
CFMutableDataRef appendTo;
// > Note the distinction between the results kSecTrustSettingsResultTrustRoot
// > and kSecTrustSettingsResultTrustAsRoot: The former can only be applied to
// > root (self-signed) certificates; the latter can only be applied to
// > non-root certificates.
if (result == kSecTrustSettingsResultTrustRoot) {
CFErrorRef errRef = NULL;
if (!isRootCertificate(cert, &errRef) || errRef != NULL) {
if (errRef != NULL) CFRelease(errRef);
continue;
}
appendTo = combinedData;
} else if (result == kSecTrustSettingsResultTrustAsRoot) {
CFErrorRef errRef = NULL;
if (isRootCertificate(cert, &errRef) || errRef != NULL) {
if (errRef != NULL) CFRelease(errRef);
continue;
}
appendTo = combinedData;
} else if (result == kSecTrustSettingsResultDeny) {
appendTo = combinedUntrustedData;
} else if (result == kSecTrustSettingsResultUnspecified) {
// Certificates with unspecified trust should probably be added to a pool of
// intermediates for chain building, or checked for transitive trust and
// added to the root pool (which is an imprecise approximation because it
// cuts chains short) but we don't support either at the moment. TODO.
continue;
} else {
continue;
}
CFDataRef data = NULL;
err = SecItemExport(cert, kSecFormatX509Cert, kSecItemPemArmour, NULL, &data);
if (err != noErr) {
continue;
}
if (data != NULL) {
CFDataAppendBytes(appendTo, CFDataGetBytePtr(data), CFDataGetLength(data));
CFRelease(data);
}
}
CFRelease(certs);
}
*pemRoots = combinedData;
*untrustedPemRoots = combinedUntrustedData;
return 0;
}
*/
import "C"
import (
"errors"
"unsafe"
)
func loadSystemRoots() (*CertPool, error) {
var data, untrustedData C.CFDataRef
err := C.CopyPEMRoots(&data, &untrustedData, C.bool(debugDarwinRoots))
if err == -1 {
return nil, errors.New("crypto/x509: failed to load darwin system roots with cgo")
}
defer C.CFRelease(C.CFTypeRef(data))
defer C.CFRelease(C.CFTypeRef(untrustedData))
buf := C.GoBytes(unsafe.Pointer(C.CFDataGetBytePtr(data)), C.int(C.CFDataGetLength(data)))
roots := NewCertPool()
roots.AppendCertsFromPEM(buf)
if C.CFDataGetLength(untrustedData) == 0 {
return roots, nil
}
buf = C.GoBytes(unsafe.Pointer(C.CFDataGetBytePtr(untrustedData)), C.int(C.CFDataGetLength(untrustedData)))
untrustedRoots := NewCertPool()
untrustedRoots.AppendCertsFromPEM(buf)
trustedRoots := NewCertPool()
for _, c := range roots.certs {
if !untrustedRoots.contains(c) {
trustedRoots.AddCert(c)
}
}
return trustedRoots, nil
}

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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:generate go run root_darwin_arm_gen.go -output root_darwin_armx.go
package x509
import (
"bufio"
"bytes"
"crypto/sha1"
"encoding/pem"
"fmt"
"io"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"strings"
"sync"
)
var debugDarwinRoots = strings.Contains(os.Getenv("GODEBUG"), "x509roots=1")
func (c *Certificate) systemVerify(opts *VerifyOptions) (chains [][]*Certificate, err error) {
return nil, nil
}
// This code is only used when compiling without cgo.
// It is here, instead of root_nocgo_darwin.go, so that tests can check it
// even if the tests are run with cgo enabled.
// The linker will not include these unused functions in binaries built with cgo enabled.
// execSecurityRoots finds the macOS list of trusted root certificates
// using only command-line tools. This is our fallback path when cgo isn't available.
//
// The strategy is as follows:
//
// 1. Run "security trust-settings-export" and "security
// trust-settings-export -d" to discover the set of certs with some
// user-tweaked trust policy. We're too lazy to parse the XML
// (Issue 26830) to understand what the trust
// policy actually is. We just learn that there is _some_ policy.
//
// 2. Run "security find-certificate" to dump the list of system root
// CAs in PEM format.
//
// 3. For each dumped cert, conditionally verify it with "security
// verify-cert" if that cert was in the set discovered in Step 1.
// Without the Step 1 optimization, running "security verify-cert"
// 150-200 times takes 3.5 seconds. With the optimization, the
// whole process takes about 180 milliseconds with 1 untrusted root
// CA. (Compared to 110ms in the cgo path)
func execSecurityRoots() (*CertPool, error) {
hasPolicy, err := getCertsWithTrustPolicy()
if err != nil {
return nil, err
}
if debugDarwinRoots {
fmt.Fprintf(os.Stderr, "crypto/x509: %d certs have a trust policy\n", len(hasPolicy))
}
keychains := []string{"/Library/Keychains/System.keychain"}
// Note that this results in trusting roots from $HOME/... (the environment
// variable), which might not be expected.
home, err := os.UserHomeDir()
if err != nil {
if debugDarwinRoots {
fmt.Fprintf(os.Stderr, "crypto/x509: can't get user home directory: %v\n", err)
}
} else {
keychains = append(keychains,
filepath.Join(home, "/Library/Keychains/login.keychain"),
// Fresh installs of Sierra use a slightly different path for the login keychain
filepath.Join(home, "/Library/Keychains/login.keychain-db"),
)
}
type rootCandidate struct {
c *Certificate
system bool
}
var (
mu sync.Mutex
roots = NewCertPool()
numVerified int // number of execs of 'security verify-cert', for debug stats
wg sync.WaitGroup
verifyCh = make(chan rootCandidate)
)
// Using 4 goroutines to pipe into verify-cert seems to be
// about the best we can do. The verify-cert binary seems to
// just RPC to another server with coarse locking anyway, so
// running 16 at a time for instance doesn't help at all. Due
// to the "if hasPolicy" check below, though, we will rarely
// (or never) call verify-cert on stock macOS systems, though.
// The hope is that we only call verify-cert when the user has
// tweaked their trust policy. These 4 goroutines are only
// defensive in the pathological case of many trust edits.
for i := 0; i < 4; i++ {
wg.Add(1)
go func() {
defer wg.Done()
for cert := range verifyCh {
sha1CapHex := fmt.Sprintf("%X", sha1.Sum(cert.c.Raw))
var valid bool
verifyChecks := 0
if hasPolicy[sha1CapHex] {
verifyChecks++
valid = verifyCertWithSystem(cert.c)
} else {
// Certificates not in SystemRootCertificates without user
// or admin trust settings are not trusted.
valid = cert.system
}
mu.Lock()
numVerified += verifyChecks
if valid {
roots.AddCert(cert.c)
}
mu.Unlock()
}
}()
}
err = forEachCertInKeychains(keychains, func(cert *Certificate) {
verifyCh <- rootCandidate{c: cert, system: false}
})
if err != nil {
close(verifyCh)
return nil, err
}
err = forEachCertInKeychains([]string{
"/System/Library/Keychains/SystemRootCertificates.keychain",
}, func(cert *Certificate) {
verifyCh <- rootCandidate{c: cert, system: true}
})
if err != nil {
close(verifyCh)
return nil, err
}
close(verifyCh)
wg.Wait()
if debugDarwinRoots {
fmt.Fprintf(os.Stderr, "crypto/x509: ran security verify-cert %d times\n", numVerified)
}
return roots, nil
}
func forEachCertInKeychains(paths []string, f func(*Certificate)) error {
args := append([]string{"find-certificate", "-a", "-p"}, paths...)
cmd := exec.Command("/usr/bin/security", args...)
data, err := cmd.Output()
if err != nil {
return err
}
for len(data) > 0 {
var block *pem.Block
block, data = pem.Decode(data)
if block == nil {
break
}
if block.Type != "CERTIFICATE" || len(block.Headers) != 0 {
continue
}
cert, err := ParseCertificate(block.Bytes)
if err != nil {
continue
}
f(cert)
}
return nil
}
func verifyCertWithSystem(cert *Certificate) bool {
data := pem.EncodeToMemory(&pem.Block{
Type: "CERTIFICATE", Bytes: cert.Raw,
})
f, err := ioutil.TempFile("", "cert")
if err != nil {
fmt.Fprintf(os.Stderr, "can't create temporary file for cert: %v", err)
return false
}
defer os.Remove(f.Name())
if _, err := f.Write(data); err != nil {
fmt.Fprintf(os.Stderr, "can't write temporary file for cert: %v", err)
return false
}
if err := f.Close(); err != nil {
fmt.Fprintf(os.Stderr, "can't write temporary file for cert: %v", err)
return false
}
cmd := exec.Command("/usr/bin/security", "verify-cert", "-p", "ssl", "-c", f.Name(), "-l", "-L")
var stderr bytes.Buffer
if debugDarwinRoots {
cmd.Stderr = &stderr
}
if err := cmd.Run(); err != nil {
if debugDarwinRoots {
fmt.Fprintf(os.Stderr, "crypto/x509: verify-cert rejected %s: %q\n", cert.Subject, bytes.TrimSpace(stderr.Bytes()))
}
return false
}
if debugDarwinRoots {
fmt.Fprintf(os.Stderr, "crypto/x509: verify-cert approved %s\n", cert.Subject)
}
return true
}
// getCertsWithTrustPolicy returns the set of certs that have a
// possibly-altered trust policy. The keys of the map are capitalized
// sha1 hex of the raw cert.
// They are the certs that should be checked against `security
// verify-cert` to see whether the user altered the default trust
// settings. This code is only used for cgo-disabled builds.
func getCertsWithTrustPolicy() (map[string]bool, error) {
set := map[string]bool{}
td, err := ioutil.TempDir("", "x509trustpolicy")
if err != nil {
return nil, err
}
defer os.RemoveAll(td)
run := func(file string, args ...string) error {
file = filepath.Join(td, file)
args = append(args, file)
cmd := exec.Command("/usr/bin/security", args...)
var stderr bytes.Buffer
cmd.Stderr = &stderr
if err := cmd.Run(); err != nil {
// If there are no trust settings, the
// `security trust-settings-export` command
// fails with:
// exit status 1, SecTrustSettingsCreateExternalRepresentation: No Trust Settings were found.
// Rather than match on English substrings that are probably
// localized on macOS, just interpret any failure to mean that
// there are no trust settings.
if debugDarwinRoots {
fmt.Fprintf(os.Stderr, "crypto/x509: exec %q: %v, %s\n", cmd.Args, err, stderr.Bytes())
}
return nil
}
f, err := os.Open(file)
if err != nil {
return err
}
defer f.Close()
// Gather all the runs of 40 capitalized hex characters.
br := bufio.NewReader(f)
var hexBuf bytes.Buffer
for {
b, err := br.ReadByte()
isHex := ('A' <= b && b <= 'F') || ('0' <= b && b <= '9')
if isHex {
hexBuf.WriteByte(b)
} else {
if hexBuf.Len() == 40 {
set[hexBuf.String()] = true
}
hexBuf.Reset()
}
if err == io.EOF {
break
}
if err != nil {
return err
}
}
return nil
}
if err := run("user", "trust-settings-export"); err != nil {
return nil, fmt.Errorf("dump-trust-settings (user): %v", err)
}
if err := run("admin", "trust-settings-export", "-d"); err != nil {
return nil, fmt.Errorf("dump-trust-settings (admin): %v", err)
}
return set, nil
}

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184
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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build ignore
// Generates root_darwin_arm64.go.
//
// As of iOS 8, there is no API for querying the system trusted X.509 root
// certificates. We could use SecTrustEvaluate to verify that a trust chain
// exists for a certificate, but the x509 API requires returning the entire
// chain.
//
// Apple publishes the list of trusted root certificates for iOS on
// support.apple.com. So we parse the list and extract the certificates from
// an OS X machine and embed them into the x509 package.
package main
import (
"bytes"
"crypto/sha256"
"crypto/x509"
"encoding/hex"
"encoding/pem"
"flag"
"fmt"
"go/format"
"io/ioutil"
"log"
"net/http"
"os/exec"
"regexp"
"strings"
)
var output = flag.String("output", "root_darwin_arm64.go", "file name to write")
func main() {
certs, err := selectCerts()
if err != nil {
log.Fatal(err)
}
buf := new(bytes.Buffer)
fmt.Fprintf(buf, "// Code generated by root_darwin_arm_gen --output %s; DO NOT EDIT.\n", *output)
fmt.Fprintf(buf, "%s", header)
fmt.Fprintf(buf, "const systemRootsPEM = `\n")
for _, cert := range certs {
b := &pem.Block{
Type: "CERTIFICATE",
Bytes: cert.Raw,
}
if err := pem.Encode(buf, b); err != nil {
log.Fatal(err)
}
}
fmt.Fprintf(buf, "`")
source, err := format.Source(buf.Bytes())
if err != nil {
log.Fatal("source format error:", err)
}
if err := ioutil.WriteFile(*output, source, 0644); err != nil {
log.Fatal(err)
}
}
func selectCerts() ([]*x509.Certificate, error) {
ids, err := fetchCertIDs()
if err != nil {
return nil, err
}
scerts, err := sysCerts()
if err != nil {
return nil, err
}
var certs []*x509.Certificate
for _, id := range ids {
if c, ok := scerts[id.fingerprint]; ok {
certs = append(certs, c)
} else {
fmt.Printf("WARNING: cannot find certificate: %s (fingerprint: %s)\n", id.name, id.fingerprint)
}
}
return certs, nil
}
func sysCerts() (certs map[string]*x509.Certificate, err error) {
cmd := exec.Command("/usr/bin/security", "find-certificate", "-a", "-p", "/System/Library/Keychains/SystemRootCertificates.keychain")
data, err := cmd.Output()
if err != nil {
return nil, err
}
certs = make(map[string]*x509.Certificate)
for len(data) > 0 {
var block *pem.Block
block, data = pem.Decode(data)
if block == nil {
break
}
if block.Type != "CERTIFICATE" || len(block.Headers) != 0 {
continue
}
cert, err := x509.ParseCertificate(block.Bytes)
if err != nil {
continue
}
fingerprint := sha256.Sum256(cert.Raw)
certs[hex.EncodeToString(fingerprint[:])] = cert
}
return certs, nil
}
type certID struct {
name string
fingerprint string
}
// fetchCertIDs fetches IDs of iOS X509 certificates from apple.com.
func fetchCertIDs() ([]certID, error) {
// Download the iOS 11 support page. The index for all iOS versions is here:
// https://support.apple.com/en-us/HT204132
resp, err := http.Get("https://support.apple.com/en-us/HT208125")
if err != nil {
return nil, err
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, err
}
text := string(body)
text = text[strings.Index(text, "<div id=trusted"):]
text = text[:strings.Index(text, "</div>")]
var ids []certID
cols := make(map[string]int)
for i, rowmatch := range regexp.MustCompile("(?s)<tr>(.*?)</tr>").FindAllStringSubmatch(text, -1) {
row := rowmatch[1]
if i == 0 {
// Parse table header row to extract column names
for i, match := range regexp.MustCompile("(?s)<th>(.*?)</th>").FindAllStringSubmatch(row, -1) {
cols[match[1]] = i
}
continue
}
values := regexp.MustCompile("(?s)<td>(.*?)</td>").FindAllStringSubmatch(row, -1)
name := values[cols["Certificate name"]][1]
fingerprint := values[cols["Fingerprint (SHA-256)"]][1]
fingerprint = strings.ReplaceAll(fingerprint, "<br>", "")
fingerprint = strings.ReplaceAll(fingerprint, "\n", "")
fingerprint = strings.ReplaceAll(fingerprint, " ", "")
fingerprint = strings.ToLower(fingerprint)
ids = append(ids, certID{
name: name,
fingerprint: fingerprint,
})
}
return ids, nil
}
const header = `
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !x509omitbundledroots
package x509
func loadSystemRoots() (*CertPool, error) {
p := NewCertPool()
p.AppendCertsFromPEM([]byte(systemRootsPEM))
return p, nil
}
`

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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package x509
import (
"crypto/rsa"
"os"
"os/exec"
"path/filepath"
"runtime"
"testing"
"time"
)
func TestSystemRoots(t *testing.T) {
switch runtime.GOARCH {
case "arm64":
t.Skipf("skipping on %s/%s, no system root", runtime.GOOS, runtime.GOARCH)
}
t0 := time.Now()
sysRoots := systemRootsPool() // actual system roots
sysRootsDuration := time.Since(t0)
t1 := time.Now()
execRoots, err := execSecurityRoots() // non-cgo roots
execSysRootsDuration := time.Since(t1)
if err != nil {
t.Fatalf("failed to read system roots: %v", err)
}
t.Logf(" cgo sys roots: %v", sysRootsDuration)
t.Logf("non-cgo sys roots: %v", execSysRootsDuration)
// On Mavericks, there are 212 bundled certs, at least there was at
// one point in time on one machine. (Maybe it was a corp laptop
// with extra certs?) Other OS X users report 135, 142, 145...
// Let's try requiring at least 100, since this is just a sanity
// check.
if want, have := 100, len(sysRoots.certs); have < want {
t.Errorf("want at least %d system roots, have %d", want, have)
}
// Fetch any intermediate certificate that verify-cert might be aware of.
out, err := exec.Command("/usr/bin/security", "find-certificate", "-a", "-p",
"/Library/Keychains/System.keychain",
filepath.Join(os.Getenv("HOME"), "/Library/Keychains/login.keychain"),
filepath.Join(os.Getenv("HOME"), "/Library/Keychains/login.keychain-db")).Output()
if err != nil {
t.Fatal(err)
}
allCerts := NewCertPool()
allCerts.AppendCertsFromPEM(out)
// Check that the two cert pools are the same.
sysPool := make(map[string]*Certificate, len(sysRoots.certs))
for _, c := range sysRoots.certs {
sysPool[string(c.Raw)] = c
}
for _, c := range execRoots.certs {
if _, ok := sysPool[string(c.Raw)]; ok {
delete(sysPool, string(c.Raw))
} else {
// verify-cert lets in certificates that are not trusted roots, but
// are signed by trusted roots. This is not great, but unavoidable
// until we parse real policies without cgo, so confirm that's the
// case and skip them.
if _, err := c.Verify(VerifyOptions{
Roots: sysRoots,
Intermediates: allCerts,
KeyUsages: []ExtKeyUsage{ExtKeyUsageAny},
CurrentTime: c.NotBefore, // verify-cert does not check expiration
}); err != nil {
t.Errorf("certificate only present in non-cgo pool: %v (verify error: %v)", c.Subject, err)
} else {
t.Logf("signed certificate only present in non-cgo pool (acceptable): %v", c.Subject)
}
}
}
for _, c := range sysPool {
// The nocgo codepath uses verify-cert with the ssl policy, which also
// happens to check EKUs, so some certificates will appear only in the
// cgo pool. We can't easily make them consistent because the EKU check
// is only applied to the certificates passed to verify-cert.
var ekuOk bool
for _, eku := range c.ExtKeyUsage {
if eku == ExtKeyUsageServerAuth || eku == ExtKeyUsageNetscapeServerGatedCrypto ||
eku == ExtKeyUsageMicrosoftServerGatedCrypto || eku == ExtKeyUsageAny {
ekuOk = true
}
}
if len(c.ExtKeyUsage) == 0 && len(c.UnknownExtKeyUsage) == 0 {
ekuOk = true
}
if !ekuOk {
t.Logf("off-EKU certificate only present in cgo pool (acceptable): %v", c.Subject)
continue
}
// Same for expired certificates. We don't chain to them anyway.
now := time.Now()
if now.Before(c.NotBefore) || now.After(c.NotAfter) {
t.Logf("expired certificate only present in cgo pool (acceptable): %v", c.Subject)
continue
}
// On 10.11 there are five unexplained roots that only show up from the
// C API. They have in common the fact that they are old, 1024-bit
// certificates. It's arguably better to ignore them anyway.
if key, ok := c.PublicKey.(*rsa.PublicKey); ok && key.N.BitLen() == 1024 {
t.Logf("1024-bit certificate only present in cgo pool (acceptable): %v", c.Subject)
continue
}
t.Errorf("certificate only present in cgo pool: %v", c.Subject)
}
if t.Failed() && debugDarwinRoots {
cmd := exec.Command("security", "dump-trust-settings")
cmd.Stdout, cmd.Stderr = os.Stderr, os.Stderr
cmd.Run()
cmd = exec.Command("security", "dump-trust-settings", "-d")
cmd.Stdout, cmd.Stderr = os.Stderr, os.Stderr
cmd.Run()
}
}

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// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build js,wasm
package x509
// Possible certificate files; stop after finding one.
var certFiles = []string{}

15
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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package x509
// Possible certificate files; stop after finding one.
var certFiles = []string{
"/etc/ssl/certs/ca-certificates.crt", // Debian/Ubuntu/Gentoo etc.
"/etc/pki/tls/certs/ca-bundle.crt", // Fedora/RHEL 6
"/etc/ssl/ca-bundle.pem", // OpenSUSE
"/etc/pki/tls/cacert.pem", // OpenELEC
"/etc/pki/ca-trust/extracted/pem/tls-ca-bundle.pem", // CentOS/RHEL 7
"/etc/ssl/cert.pem", // Alpine Linux
}

11
tempfork/x509/root_nocgo_darwin.go Normal file
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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !cgo
package x509
func loadSystemRoots() (*CertPool, error) {
return execSecurityRoots()
}

21
tempfork/x509/root_omit.go Normal file
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// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin,arm64,x509omitbundledroots
// This file provides the loadSystemRoots func when the
// "x509omitbundledroots" build tag has disabled bundling a copy,
// which currently on happens on darwin/arm64 (root_darwin_arm64.go).
// This then saves 256 KiB of binary size and another 560 KiB of
// runtime memory size retaining the parsed roots forever. Constrained
// environments can construct minimal x509 root CertPools on the fly
// in the crypto/tls.Config.VerifyPeerCertificate hook.
package x509
import "errors"
func loadSystemRoots() (*CertPool, error) {
return nil, errors.New("x509: system root bundling disabled")
}

22
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// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin,arm64,x509omitbundledroots
package x509
import (
"strings"
"testing"
)
func TestOmitBundledRoots(t *testing.T) {
cp, err := loadSystemRoots()
if err == nil {
t.Fatalf("loadSystemRoots = (pool %p, error %v); want non-nil error", cp, err)
}
if !strings.Contains(err.Error(), "root bundling disabled") {
t.Errorf("unexpected error doesn't mention bundling: %v", err)
}
}

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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build plan9
package x509
import (
"io/ioutil"
"os"
)
// Possible certificate files; stop after finding one.
var certFiles = []string{
"/sys/lib/tls/ca.pem",
}
func (c *Certificate) systemVerify(opts *VerifyOptions) (chains [][]*Certificate, err error) {
return nil, nil
}
func loadSystemRoots() (*CertPool, error) {
roots := NewCertPool()
var bestErr error
for _, file := range certFiles {
data, err := ioutil.ReadFile(file)
if err == nil {
roots.AppendCertsFromPEM(data)
return roots, nil
}
if bestErr == nil || (os.IsNotExist(bestErr) && !os.IsNotExist(err)) {
bestErr = err
}
}
if bestErr == nil {
return roots, nil
}
return nil, bestErr
}

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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package x509
// Possible certificate files; stop after finding one.
var certFiles = []string{
"/etc/certs/ca-certificates.crt", // Solaris 11.2+
"/etc/ssl/certs/ca-certificates.crt", // Joyent SmartOS
"/etc/ssl/cacert.pem", // OmniOS
}

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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build aix dragonfly freebsd js,wasm linux netbsd openbsd solaris
package x509
import (
"io/ioutil"
"os"
"strings"
)
// Possible directories with certificate files; stop after successfully
// reading at least one file from a directory.
var certDirectories = []string{
"/etc/ssl/certs", // SLES10/SLES11, https://golang.org/issue/12139
"/system/etc/security/cacerts", // Android
"/usr/local/share/certs", // FreeBSD
"/etc/pki/tls/certs", // Fedora/RHEL
"/etc/openssl/certs", // NetBSD
"/var/ssl/certs", // AIX
}
const (
// certFileEnv is the environment variable which identifies where to locate
// the SSL certificate file. If set this overrides the system default.
certFileEnv = "SSL_CERT_FILE"
// certDirEnv is the environment variable which identifies which directory
// to check for SSL certificate files. If set this overrides the system default.
// It is a colon separated list of directories.
// See https://www.openssl.org/docs/man1.0.2/man1/c_rehash.html.
certDirEnv = "SSL_CERT_DIR"
)
func (c *Certificate) systemVerify(opts *VerifyOptions) (chains [][]*Certificate, err error) {
return nil, nil
}
func loadSystemRoots() (*CertPool, error) {
roots := NewCertPool()
files := certFiles
if f := os.Getenv(certFileEnv); f != "" {
files = []string{f}
}
var firstErr error
for _, file := range files {
data, err := ioutil.ReadFile(file)
if err == nil {
roots.AppendCertsFromPEM(data)
break
}
if firstErr == nil && !os.IsNotExist(err) {
firstErr = err
}
}
dirs := certDirectories
if d := os.Getenv(certDirEnv); d != "" {
// OpenSSL and BoringSSL both use ":" as the SSL_CERT_DIR separator.
// See:
// * https://golang.org/issue/35325
// * https://www.openssl.org/docs/man1.0.2/man1/c_rehash.html
dirs = strings.Split(d, ":")
}
for _, directory := range dirs {
fis, err := ioutil.ReadDir(directory)
if err != nil {
if firstErr == nil && !os.IsNotExist(err) {
firstErr = err
}
continue
}
for _, fi := range fis {
data, err := ioutil.ReadFile(directory + "/" + fi.Name())
if err == nil {
roots.AppendCertsFromPEM(data)
}
}
}
if len(roots.certs) > 0 || firstErr == nil {
return roots, nil
}
return nil, firstErr
}

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// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build dragonfly freebsd linux netbsd openbsd solaris
package x509
import (
"bytes"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"reflect"
"strings"
"testing"
)
const (
testDir = "testdata"
testDirCN = "test-dir"
testFile = "test-file.crt"
testFileCN = "test-file"
testMissing = "missing"
)
func TestEnvVars(t *testing.T) {
testCases := []struct {
name string
fileEnv string
dirEnv string
files []string
dirs []string
cns []string
}{
{
// Environment variables override the default locations preventing fall through.
name: "override-defaults",
fileEnv: testMissing,
dirEnv: testMissing,
files: []string{testFile},
dirs: []string{testDir},
cns: nil,
},
{
// File environment overrides default file locations.
name: "file",
fileEnv: testFile,
dirEnv: "",
files: nil,
dirs: nil,
cns: []string{testFileCN},
},
{
// Directory environment overrides default directory locations.
name: "dir",
fileEnv: "",
dirEnv: testDir,
files: nil,
dirs: nil,
cns: []string{testDirCN},
},
{
// File & directory environment overrides both default locations.
name: "file+dir",
fileEnv: testFile,
dirEnv: testDir,
files: nil,
dirs: nil,
cns: []string{testFileCN, testDirCN},
},
{
// Environment variable empty / unset uses default locations.
name: "empty-fall-through",
fileEnv: "",
dirEnv: "",
files: []string{testFile},
dirs: []string{testDir},
cns: []string{testFileCN, testDirCN},
},
}
// Save old settings so we can restore before the test ends.
origCertFiles, origCertDirectories := certFiles, certDirectories
origFile, origDir := os.Getenv(certFileEnv), os.Getenv(certDirEnv)
defer func() {
certFiles = origCertFiles
certDirectories = origCertDirectories
os.Setenv(certFileEnv, origFile)
os.Setenv(certDirEnv, origDir)
}()
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
if err := os.Setenv(certFileEnv, tc.fileEnv); err != nil {
t.Fatalf("setenv %q failed: %v", certFileEnv, err)
}
if err := os.Setenv(certDirEnv, tc.dirEnv); err != nil {
t.Fatalf("setenv %q failed: %v", certDirEnv, err)
}
certFiles, certDirectories = tc.files, tc.dirs
r, err := loadSystemRoots()
if err != nil {
t.Fatal("unexpected failure:", err)
}
if r == nil {
t.Fatal("nil roots")
}
// Verify that the returned certs match, otherwise report where the mismatch is.
for i, cn := range tc.cns {
if i >= len(r.certs) {
t.Errorf("missing cert %v @ %v", cn, i)
} else if r.certs[i].Subject.CommonName != cn {
fmt.Printf("%#v\n", r.certs[0].Subject)
t.Errorf("unexpected cert common name %q, want %q", r.certs[i].Subject.CommonName, cn)
}
}
if len(r.certs) > len(tc.cns) {
t.Errorf("got %v certs, which is more than %v wanted", len(r.certs), len(tc.cns))
}
})
}
}
// Ensure that "SSL_CERT_DIR" when used as the environment
// variable delimited by colons, allows loadSystemRoots to
// load all the roots from the respective directories.
// See https://golang.org/issue/35325.
func TestLoadSystemCertsLoadColonSeparatedDirs(t *testing.T) {
origFile, origDir := os.Getenv(certFileEnv), os.Getenv(certDirEnv)
origCertFiles := certFiles[:]
// To prevent any other certs from being loaded in
// through "SSL_CERT_FILE" or from known "certFiles",
// clear them all, and they'll be reverting on defer.
certFiles = certFiles[:0]
os.Setenv(certFileEnv, "")
defer func() {
certFiles = origCertFiles[:]
os.Setenv(certDirEnv, origDir)
os.Setenv(certFileEnv, origFile)
}()
tmpDir, err := ioutil.TempDir(os.TempDir(), "x509-issue35325")
if err != nil {
t.Fatalf("Failed to create temporary directory: %v", err)
}
defer os.RemoveAll(tmpDir)
rootPEMs := []string{
geoTrustRoot,
googleLeaf,
startComRoot,
}
var certDirs []string
for i, certPEM := range rootPEMs {
certDir := filepath.Join(tmpDir, fmt.Sprintf("cert-%d", i))
if err := os.MkdirAll(certDir, 0755); err != nil {
t.Fatalf("Failed to create certificate dir: %v", err)
}
certOutFile := filepath.Join(certDir, "cert.crt")
if err := ioutil.WriteFile(certOutFile, []byte(certPEM), 0655); err != nil {
t.Fatalf("Failed to write certificate to file: %v", err)
}
certDirs = append(certDirs, certDir)
}
// Sanity check: the number of certDirs should be equal to the number of roots.
if g, w := len(certDirs), len(rootPEMs); g != w {
t.Fatalf("Failed sanity check: len(certsDir)=%d is not equal to len(rootsPEMS)=%d", g, w)
}
// Now finally concatenate them with a colon.
colonConcatCertDirs := strings.Join(certDirs, ":")
os.Setenv(certDirEnv, colonConcatCertDirs)
gotPool, err := loadSystemRoots()
if err != nil {
t.Fatalf("Failed to load system roots: %v", err)
}
subjects := gotPool.Subjects()
// We expect exactly len(rootPEMs) subjects back.
if g, w := len(subjects), len(rootPEMs); g != w {
t.Fatalf("Invalid number of subjects: got %d want %d", g, w)
}
wantPool := NewCertPool()
for _, certPEM := range rootPEMs {
wantPool.AppendCertsFromPEM([]byte(certPEM))
}
strCertPool := func(p *CertPool) string {
return string(bytes.Join(p.Subjects(), []byte("\n")))
}
if !reflect.DeepEqual(gotPool, wantPool) {
g, w := strCertPool(gotPool), strCertPool(wantPool)
t.Fatalf("Mismatched certPools\nGot:\n%s\n\nWant:\n%s", g, w)
}
}

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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package x509
import (
"errors"
"syscall"
"unsafe"
)
// Creates a new *syscall.CertContext representing the leaf certificate in an in-memory
// certificate store containing itself and all of the intermediate certificates specified
// in the opts.Intermediates CertPool.
//
// A pointer to the in-memory store is available in the returned CertContext's Store field.
// The store is automatically freed when the CertContext is freed using
// syscall.CertFreeCertificateContext.
func createStoreContext(leaf *Certificate, opts *VerifyOptions) (*syscall.CertContext, error) {
var storeCtx *syscall.CertContext
leafCtx, err := syscall.CertCreateCertificateContext(syscall.X509_ASN_ENCODING|syscall.PKCS_7_ASN_ENCODING, &leaf.Raw[0], uint32(len(leaf.Raw)))
if err != nil {
return nil, err
}
defer syscall.CertFreeCertificateContext(leafCtx)
handle, err := syscall.CertOpenStore(syscall.CERT_STORE_PROV_MEMORY, 0, 0, syscall.CERT_STORE_DEFER_CLOSE_UNTIL_LAST_FREE_FLAG, 0)
if err != nil {
return nil, err
}
defer syscall.CertCloseStore(handle, 0)
err = syscall.CertAddCertificateContextToStore(handle, leafCtx, syscall.CERT_STORE_ADD_ALWAYS, &storeCtx)
if err != nil {
return nil, err
}
if opts.Intermediates != nil {
for _, intermediate := range opts.Intermediates.certs {
ctx, err := syscall.CertCreateCertificateContext(syscall.X509_ASN_ENCODING|syscall.PKCS_7_ASN_ENCODING, &intermediate.Raw[0], uint32(len(intermediate.Raw)))
if err != nil {
return nil, err
}
err = syscall.CertAddCertificateContextToStore(handle, ctx, syscall.CERT_STORE_ADD_ALWAYS, nil)
syscall.CertFreeCertificateContext(ctx)
if err != nil {
return nil, err
}
}
}
return storeCtx, nil
}
// extractSimpleChain extracts the final certificate chain from a CertSimpleChain.
func extractSimpleChain(simpleChain **syscall.CertSimpleChain, count int) (chain []*Certificate, err error) {
if simpleChain == nil || count == 0 {
return nil, errors.New("x509: invalid simple chain")
}
simpleChains := (*[1 << 20]*syscall.CertSimpleChain)(unsafe.Pointer(simpleChain))[:count:count]
lastChain := simpleChains[count-1]
elements := (*[1 << 20]*syscall.CertChainElement)(unsafe.Pointer(lastChain.Elements))[:lastChain.NumElements:lastChain.NumElements]
for i := 0; i < int(lastChain.NumElements); i++ {
// Copy the buf, since ParseCertificate does not create its own copy.
cert := elements[i].CertContext
encodedCert := (*[1 << 20]byte)(unsafe.Pointer(cert.EncodedCert))[:cert.Length:cert.Length]
buf := make([]byte, cert.Length)
copy(buf, encodedCert)
parsedCert, err := ParseCertificate(buf)
if err != nil {
return nil, err
}
chain = append(chain, parsedCert)
}
return chain, nil
}
// checkChainTrustStatus checks the trust status of the certificate chain, translating
// any errors it finds into Go errors in the process.
func checkChainTrustStatus(c *Certificate, chainCtx *syscall.CertChainContext) error {
if chainCtx.TrustStatus.ErrorStatus != syscall.CERT_TRUST_NO_ERROR {
status := chainCtx.TrustStatus.ErrorStatus
switch status {
case syscall.CERT_TRUST_IS_NOT_TIME_VALID:
return CertificateInvalidError{c, Expired, ""}
default:
return UnknownAuthorityError{c, nil, nil}
}
}
return nil
}
// checkChainSSLServerPolicy checks that the certificate chain in chainCtx is valid for
// use as a certificate chain for a SSL/TLS server.
func checkChainSSLServerPolicy(c *Certificate, chainCtx *syscall.CertChainContext, opts *VerifyOptions) error {
servernamep, err := syscall.UTF16PtrFromString(opts.DNSName)
if err != nil {
return err
}
sslPara := &syscall.SSLExtraCertChainPolicyPara{
AuthType: syscall.AUTHTYPE_SERVER,
ServerName: servernamep,
}
sslPara.Size = uint32(unsafe.Sizeof(*sslPara))
para := &syscall.CertChainPolicyPara{
ExtraPolicyPara: (syscall.Pointer)(unsafe.Pointer(sslPara)),
}
para.Size = uint32(unsafe.Sizeof(*para))
status := syscall.CertChainPolicyStatus{}
err = syscall.CertVerifyCertificateChainPolicy(syscall.CERT_CHAIN_POLICY_SSL, chainCtx, para, &status)
if err != nil {
return err
}
// TODO(mkrautz): use the lChainIndex and lElementIndex fields
// of the CertChainPolicyStatus to provide proper context, instead
// using c.
if status.Error != 0 {
switch status.Error {
case syscall.CERT_E_EXPIRED:
return CertificateInvalidError{c, Expired, ""}
case syscall.CERT_E_CN_NO_MATCH:
return HostnameError{c, opts.DNSName}
case syscall.CERT_E_UNTRUSTEDROOT:
return UnknownAuthorityError{c, nil, nil}
default:
return UnknownAuthorityError{c, nil, nil}
}
}
return nil
}
// systemVerify is like Verify, except that it uses CryptoAPI calls
// to build certificate chains and verify them.
func (c *Certificate) systemVerify(opts *VerifyOptions) (chains [][]*Certificate, err error) {
hasDNSName := opts != nil && len(opts.DNSName) > 0
storeCtx, err := createStoreContext(c, opts)
if err != nil {
return nil, err
}
defer syscall.CertFreeCertificateContext(storeCtx)
para := new(syscall.CertChainPara)
para.Size = uint32(unsafe.Sizeof(*para))
// If there's a DNSName set in opts, assume we're verifying
// a certificate from a TLS server.
if hasDNSName {
oids := []*byte{
&syscall.OID_PKIX_KP_SERVER_AUTH[0],
// Both IE and Chrome allow certificates with
// Server Gated Crypto as well. Some certificates
// in the wild require them.
&syscall.OID_SERVER_GATED_CRYPTO[0],
&syscall.OID_SGC_NETSCAPE[0],
}
para.RequestedUsage.Type = syscall.USAGE_MATCH_TYPE_OR
para.RequestedUsage.Usage.Length = uint32(len(oids))
para.RequestedUsage.Usage.UsageIdentifiers = &oids[0]
} else {
para.RequestedUsage.Type = syscall.USAGE_MATCH_TYPE_AND
para.RequestedUsage.Usage.Length = 0
para.RequestedUsage.Usage.UsageIdentifiers = nil
}
var verifyTime *syscall.Filetime
if opts != nil && !opts.CurrentTime.IsZero() {
ft := syscall.NsecToFiletime(opts.CurrentTime.UnixNano())
verifyTime = &ft
}
// CertGetCertificateChain will traverse Windows's root stores
// in an attempt to build a verified certificate chain. Once
// it has found a verified chain, it stops. MSDN docs on
// CERT_CHAIN_CONTEXT:
//
// When a CERT_CHAIN_CONTEXT is built, the first simple chain
// begins with an end certificate and ends with a self-signed
// certificate. If that self-signed certificate is not a root
// or otherwise trusted certificate, an attempt is made to
// build a new chain. CTLs are used to create the new chain
// beginning with the self-signed certificate from the original
// chain as the end certificate of the new chain. This process
// continues building additional simple chains until the first
// self-signed certificate is a trusted certificate or until
// an additional simple chain cannot be built.
//
// The result is that we'll only get a single trusted chain to
// return to our caller.
var chainCtx *syscall.CertChainContext
err = syscall.CertGetCertificateChain(syscall.Handle(0), storeCtx, verifyTime, storeCtx.Store, para, 0, 0, &chainCtx)
if err != nil {
return nil, err
}
defer syscall.CertFreeCertificateChain(chainCtx)
err = checkChainTrustStatus(c, chainCtx)
if err != nil {
return nil, err
}
if hasDNSName {
err = checkChainSSLServerPolicy(c, chainCtx, opts)
if err != nil {
return nil, err
}
}
chain, err := extractSimpleChain(chainCtx.Chains, int(chainCtx.ChainCount))
if err != nil {
return nil, err
}
if len(chain) < 1 {
return nil, errors.New("x509: internal error: system verifier returned an empty chain")
}
// Mitigate CVE-2020-0601, where the Windows system verifier might be
// tricked into using custom curve parameters for a trusted root, by
// double-checking all ECDSA signatures. If the system was tricked into
// using spoofed parameters, the signature will be invalid for the correct
// ones we parsed. (We don't support custom curves ourselves.)
for i, parent := range chain[1:] {
if parent.PublicKeyAlgorithm != ECDSA {
continue
}
if err := parent.CheckSignature(chain[i].SignatureAlgorithm,
chain[i].RawTBSCertificate, chain[i].Signature); err != nil {
return nil, err
}
}
return [][]*Certificate{chain}, nil
}
func loadSystemRoots() (*CertPool, error) {
// TODO: restore this functionality on Windows. We tried to do
// it in Go 1.8 but had to revert it. See Issue 18609.
// Returning (nil, nil) was the old behavior, prior to CL 30578.
// The if statement here avoids vet complaining about
// unreachable code below.
if true {
return nil, nil
}
const CRYPT_E_NOT_FOUND = 0x80092004
store, err := syscall.CertOpenSystemStore(0, syscall.StringToUTF16Ptr("ROOT"))
if err != nil {
return nil, err
}
defer syscall.CertCloseStore(store, 0)
roots := NewCertPool()
var cert *syscall.CertContext
for {
cert, err = syscall.CertEnumCertificatesInStore(store, cert)
if err != nil {
if errno, ok := err.(syscall.Errno); ok {
if errno == CRYPT_E_NOT_FOUND {
break
}
}
return nil, err
}
if cert == nil {
break
}
// Copy the buf, since ParseCertificate does not create its own copy.
buf := (*[1 << 20]byte)(unsafe.Pointer(cert.EncodedCert))[:cert.Length:cert.Length]
buf2 := make([]byte, cert.Length)
copy(buf2, buf)
if c, err := ParseCertificate(buf2); err == nil {
roots.AddCert(c)
}
}
return roots, nil
}

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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package x509
import (
"crypto/ecdsa"
"crypto/elliptic"
"encoding/asn1"
"errors"
"fmt"
"math/big"
)
const ecPrivKeyVersion = 1
// ecPrivateKey reflects an ASN.1 Elliptic Curve Private Key Structure.
// References:
// RFC 5915
// SEC1 - http://www.secg.org/sec1-v2.pdf
// Per RFC 5915 the NamedCurveOID is marked as ASN.1 OPTIONAL, however in
// most cases it is not.
type ecPrivateKey struct {
Version int
PrivateKey []byte
NamedCurveOID asn1.ObjectIdentifier `asn1:"optional,explicit,tag:0"`
PublicKey asn1.BitString `asn1:"optional,explicit,tag:1"`
}
// ParseECPrivateKey parses an EC private key in SEC 1, ASN.1 DER form.
//
// This kind of key is commonly encoded in PEM blocks of type "EC PRIVATE KEY".
func ParseECPrivateKey(der []byte) (*ecdsa.PrivateKey, error) {
return parseECPrivateKey(nil, der)
}
// MarshalECPrivateKey converts an EC private key to SEC 1, ASN.1 DER form.
//
// This kind of key is commonly encoded in PEM blocks of type "EC PRIVATE KEY".
// For a more flexible key format which is not EC specific, use
// MarshalPKCS8PrivateKey.
func MarshalECPrivateKey(key *ecdsa.PrivateKey) ([]byte, error) {
oid, ok := oidFromNamedCurve(key.Curve)
if !ok {
return nil, errors.New("x509: unknown elliptic curve")
}
return marshalECPrivateKeyWithOID(key, oid)
}
// marshalECPrivateKey marshals an EC private key into ASN.1, DER format and
// sets the curve ID to the given OID, or omits it if OID is nil.
func marshalECPrivateKeyWithOID(key *ecdsa.PrivateKey, oid asn1.ObjectIdentifier) ([]byte, error) {
privateKeyBytes := key.D.Bytes()
paddedPrivateKey := make([]byte, (key.Curve.Params().N.BitLen()+7)/8)
copy(paddedPrivateKey[len(paddedPrivateKey)-len(privateKeyBytes):], privateKeyBytes)
return asn1.Marshal(ecPrivateKey{
Version: 1,
PrivateKey: paddedPrivateKey,
NamedCurveOID: oid,
PublicKey: asn1.BitString{Bytes: elliptic.Marshal(key.Curve, key.X, key.Y)},
})
}
// parseECPrivateKey parses an ASN.1 Elliptic Curve Private Key Structure.
// The OID for the named curve may be provided from another source (such as
// the PKCS8 container) - if it is provided then use this instead of the OID
// that may exist in the EC private key structure.
func parseECPrivateKey(namedCurveOID *asn1.ObjectIdentifier, der []byte) (key *ecdsa.PrivateKey, err error) {
var privKey ecPrivateKey
if _, err := asn1.Unmarshal(der, &privKey); err != nil {
if _, err := asn1.Unmarshal(der, &pkcs8{}); err == nil {
return nil, errors.New("x509: failed to parse private key (use ParsePKCS8PrivateKey instead for this key format)")
}
if _, err := asn1.Unmarshal(der, &pkcs1PrivateKey{}); err == nil {
return nil, errors.New("x509: failed to parse private key (use ParsePKCS1PrivateKey instead for this key format)")
}
return nil, errors.New("x509: failed to parse EC private key: " + err.Error())
}
if privKey.Version != ecPrivKeyVersion {
return nil, fmt.Errorf("x509: unknown EC private key version %d", privKey.Version)
}
var curve elliptic.Curve
if namedCurveOID != nil {
curve = namedCurveFromOID(*namedCurveOID)
} else {
curve = namedCurveFromOID(privKey.NamedCurveOID)
}
if curve == nil {
return nil, errors.New("x509: unknown elliptic curve")
}
k := new(big.Int).SetBytes(privKey.PrivateKey)
curveOrder := curve.Params().N
if k.Cmp(curveOrder) >= 0 {
return nil, errors.New("x509: invalid elliptic curve private key value")
}
priv := new(ecdsa.PrivateKey)
priv.Curve = curve
priv.D = k
privateKey := make([]byte, (curveOrder.BitLen()+7)/8)
// Some private keys have leading zero padding. This is invalid
// according to [SEC1], but this code will ignore it.
for len(privKey.PrivateKey) > len(privateKey) {
if privKey.PrivateKey[0] != 0 {
return nil, errors.New("x509: invalid private key length")
}
privKey.PrivateKey = privKey.PrivateKey[1:]
}
// Some private keys remove all leading zeros, this is also invalid
// according to [SEC1] but since OpenSSL used to do this, we ignore
// this too.
copy(privateKey[len(privateKey)-len(privKey.PrivateKey):], privKey.PrivateKey)
priv.X, priv.Y = curve.ScalarBaseMult(privateKey)
return priv, nil
}

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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package x509
import (
"bytes"
"encoding/hex"
"strings"
"testing"
)
var ecKeyTests = []struct {
derHex string
shouldReserialize bool
}{
// Generated using:
// openssl ecparam -genkey -name secp384r1 -outform PEM
{"3081a40201010430bdb9839c08ee793d1157886a7a758a3c8b2a17a4df48f17ace57c72c56b4723cf21dcda21d4e1ad57ff034f19fcfd98ea00706052b81040022a16403620004feea808b5ee2429cfcce13c32160e1c960990bd050bb0fdf7222f3decd0a55008e32a6aa3c9062051c4cba92a7a3b178b24567412d43cdd2f882fa5addddd726fe3e208d2c26d733a773a597abb749714df7256ead5105fa6e7b3650de236b50", true},
// This key was generated by GnuTLS and has illegal zero-padding of the
// private key. See https://golang.org/issues/13699.
{"3078020101042100f9f43a04b9bdc3ab01f53be6df80e7a7bc3eaf7b87fc24e630a4a0aa97633645a00a06082a8648ce3d030107a1440342000441a51bc318461b4c39a45048a16d4fc2a935b1ea7fe86e8c1fa219d6f2438f7c7fd62957d3442efb94b6a23eb0ea66dda663dc42f379cda6630b21b7888a5d3d", false},
// This was generated using an old version of OpenSSL and is missing a
// leading zero byte in the private key that should be present.
{"3081db0201010441607b4f985774ac21e633999794542e09312073480baa69550914d6d43d8414441e61b36650567901da714f94dffb3ce0e2575c31928a0997d51df5c440e983ca17a00706052b81040023a181890381860004001661557afedd7ac8d6b70e038e576558c626eb62edda36d29c3a1310277c11f67a8c6f949e5430a37dcfb95d902c1b5b5379c389873b9dd17be3bdb088a4774a7401072f830fb9a08d93bfa50a03dd3292ea07928724ddb915d831917a338f6b0aecfbc3cf5352c4a1295d356890c41c34116d29eeb93779aab9d9d78e2613437740f6", false},
}
func TestParseECPrivateKey(t *testing.T) {
for i, test := range ecKeyTests {
derBytes, _ := hex.DecodeString(test.derHex)
key, err := ParseECPrivateKey(derBytes)
if err != nil {
t.Fatalf("#%d: failed to decode EC private key: %s", i, err)
}
serialized, err := MarshalECPrivateKey(key)
if err != nil {
t.Fatalf("#%d: failed to encode EC private key: %s", i, err)
}
matches := bytes.Equal(serialized, derBytes)
if matches != test.shouldReserialize {
t.Fatalf("#%d: when serializing key: matches=%t, should match=%t: original %x, reserialized %x", i, matches, test.shouldReserialize, serialized, derBytes)
}
}
}
const hexECTestPKCS1Key = "3082025c02010002818100b1a1e0945b9289c4d3f1329f8a982c4a2dcd59bfd372fb8085a9c517554607ebd2f7990eef216ac9f4605f71a03b04f42a5255b158cf8e0844191f5119348baa44c35056e20609bcf9510f30ead4b481c81d7865fb27b8e0090e112b717f3ee08cdfc4012da1f1f7cf2a1bc34c73a54a12b06372d09714742dd7895eadde4aa5020301000102818062b7fa1db93e993e40237de4d89b7591cc1ea1d04fed4904c643f17ae4334557b4295270d0491c161cb02a9af557978b32b20b59c267a721c4e6c956c2d147046e9ae5f2da36db0106d70021fa9343455f8f973a4b355a26fd19e6b39dee0405ea2b32deddf0f4817759ef705d02b34faab9ca93c6766e9f722290f119f34449024100d9c29a4a013a90e35fd1be14a3f747c589fac613a695282d61812a711906b8a0876c6181f0333ca1066596f57bff47e7cfcabf19c0fc69d9cd76df743038b3cb024100d0d3546fecf879b5551f2bd2c05e6385f2718a08a6face3d2aecc9d7e03645a480a46c81662c12ad6bd6901e3bd4f38029462de7290859567cdf371c79088d4f024100c254150657e460ea58573fcf01a82a4791e3d6223135c8bdfed69afe84fbe7857274f8eb5165180507455f9b4105c6b08b51fe8a481bb986a202245576b713530240045700003b7a867d0041df9547ae2e7f50248febd21c9040b12dae9c2feab0d3d4609668b208e4727a3541557f84d372ac68eaf74ce1018a4c9a0ef92682c8fd02405769731480bb3a4570abf422527c5f34bf732fa6c1e08cc322753c511ce055fac20fc770025663ad3165324314df907f1f1942f0448a7e9cdbf87ecd98b92156"
const hexECTestPKCS8Key = "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"
var ecMismatchKeyTests = []struct {
hexKey string
errorContains string
}{
{hexKey: hexECTestPKCS8Key, errorContains: "use ParsePKCS8PrivateKey instead"},
{hexKey: hexECTestPKCS1Key, errorContains: "use ParsePKCS1PrivateKey instead"},
}
func TestECMismatchKeyFormat(t *testing.T) {
for i, test := range ecMismatchKeyTests {
derBytes, _ := hex.DecodeString(test.hexKey)
_, err := ParseECPrivateKey(derBytes)
if !strings.Contains(err.Error(), test.errorContains) {
t.Errorf("#%d: expected error containing %q, got %s", i, test.errorContains, err)
}
}
}

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-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

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-----BEGIN CERTIFICATE-----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=
-----END CERTIFICATE-----

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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build ignore
// This file is run by the x509 tests to ensure that a program with minimal
// imports can sign certificates without errors resulting from missing hash
// functions.
package main
import (
"crypto/rand"
"crypto/x509"
"crypto/x509/pkix"
"encoding/pem"
"math/big"
"strings"
"time"
)
func main() {
block, _ := pem.Decode([]byte(pemPrivateKey))
rsaPriv, err := x509.ParsePKCS1PrivateKey(block.Bytes)
if err != nil {
panic("Failed to parse private key: " + err.Error())
}
template := x509.Certificate{
SerialNumber: big.NewInt(1),
Subject: pkix.Name{
CommonName: "test",
Organization: []string{"Σ Acme Co"},
},
NotBefore: time.Unix(1000, 0),
NotAfter: time.Unix(100000, 0),
KeyUsage: x509.KeyUsageCertSign,
}
if _, err = x509.CreateCertificate(rand.Reader, &template, &template, &rsaPriv.PublicKey, rsaPriv); err != nil {
panic("failed to create certificate with basic imports: " + err.Error())
}
}
var pemPrivateKey = testingKey(`-----BEGIN RSA TESTING KEY-----
MIIBOgIBAAJBALKZD0nEffqM1ACuak0bijtqE2QrI/KLADv7l3kK3ppMyCuLKoF0
fd7Ai2KW5ToIwzFofvJcS/STa6HA5gQenRUCAwEAAQJBAIq9amn00aS0h/CrjXqu
/ThglAXJmZhOMPVn4eiu7/ROixi9sex436MaVeMqSNf7Ex9a8fRNfWss7Sqd9eWu
RTUCIQDasvGASLqmjeffBNLTXV2A5g4t+kLVCpsEIZAycV5GswIhANEPLmax0ME/
EO+ZJ79TJKN5yiGBRsv5yvx5UiHxajEXAiAhAol5N4EUyq6I9w1rYdhPMGpLfk7A
IU2snfRJ6Nq2CQIgFrPsWRCkV+gOYcajD17rEqmuLrdIRexpg8N1DOSXoJ8CIGlS
tAboUGBxTDq3ZroNism3DaMIbKPyYrAqhKov1h5V
-----END RSA TESTING KEY-----
`)
func testingKey(s string) string { return strings.ReplaceAll(s, "TESTING KEY", "PRIVATE KEY") }