94 lines
2.2 KiB
NASM
94 lines
2.2 KiB
NASM
;
|
|
; *
|
|
; * Copyright (c) 2009-2010
|
|
; * ntldr <ntldr@diskcryptor.net> PGP key ID - 0x1B6A24550F33E44A
|
|
; *
|
|
; This program is free software: you can redistribute it and/or modify
|
|
; it under the terms of the GNU General Public License version 3 as
|
|
; published by the Free Software Foundation.
|
|
;
|
|
; This program is distributed in the hope that it will be useful,
|
|
; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
; GNU General Public License for more details.
|
|
;
|
|
; You should have received a copy of the GNU General Public License
|
|
; along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
;
|
|
|
|
%define NEH_LOAD_KEY 00000080h ; load schedule from memory
|
|
%define NEH_ENCRYPT 00000000h ; encryption
|
|
%define NEH_DECRYPT 00000200h ; decryption
|
|
%define NEH_KEY128 00000000h+0ah ; 128 bit key
|
|
%define NEH_KEY192 00000400h+0ch ; 192 bit key
|
|
%define NEH_KEY256 00000800h+0eh ; 256 bit key
|
|
%define NEH_ENC_LOAD (NEH_ENCRYPT | NEH_LOAD_KEY)
|
|
%define NEH_DEC_LOAD (NEH_DECRYPT | NEH_LOAD_KEY)
|
|
|
|
align 16
|
|
enc_cwd dd (NEH_ENC_LOAD | NEH_KEY256), 0, 0
|
|
align 16
|
|
dec_cwd dd (NEH_DEC_LOAD | NEH_KEY256), 0, 0
|
|
|
|
global _aes256_padlock_available@0
|
|
global _aes256_padlock_encrypt@16
|
|
global _aes256_padlock_decrypt@16
|
|
|
|
_aes256_padlock_available@0:
|
|
push ebx
|
|
; test for VIA CPU
|
|
mov eax, 0C0000000h
|
|
cpuid
|
|
cmp eax, 0C0000001h
|
|
jb no_ace
|
|
; read VIA flags
|
|
mov eax, 0C0000001h
|
|
cpuid
|
|
and edx, 0C0h ; ACE_MASK,CPUID EDX code for ACE
|
|
cmp edx, 0C0h ; ACE_MASK,CPUID EDX code for ACE
|
|
jnz no_ace
|
|
; ACE present
|
|
xor eax, eax
|
|
inc eax
|
|
jmp end_ace
|
|
no_ace:
|
|
xor eax, eax
|
|
end_ace:
|
|
pop ebx
|
|
ret
|
|
|
|
align 16
|
|
_aes256_padlock_encrypt@16:
|
|
push ebx
|
|
push esi
|
|
push edi
|
|
mov esi, [esp+10h] ; in
|
|
mov edi, [esp+14h] ; out
|
|
mov ecx, [esp+18h] ; n_blocks
|
|
mov ebx, [esp+1Ch] ; key
|
|
mov edx, enc_cwd
|
|
xcryptecb
|
|
pop edi
|
|
pop esi
|
|
pop ebx
|
|
retn 10h
|
|
|
|
align 16
|
|
_aes256_padlock_decrypt@16
|
|
push ebx
|
|
push esi
|
|
push edi
|
|
mov esi, [esp+10h] ; in
|
|
mov edi, [esp+14h] ; out
|
|
mov ecx, [esp+18h] ; n_blocks
|
|
mov ebx, [esp+1Ch] ; key
|
|
add ebx, 4*15*4
|
|
mov edx, dec_cwd
|
|
xcryptecb
|
|
pop edi
|
|
pop esi
|
|
pop ebx
|
|
retn 10h
|
|
|
|
|