116 lines
3.9 KiB
C
116 lines
3.9 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2014 Paul Sokolovsky
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <assert.h>
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#include <string.h>
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#include "py/nlr.h"
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#include "py/runtime.h"
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#if MICROPY_PY_UHASHLIB
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#include "crypto-algorithms/sha256.h"
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typedef struct _mp_obj_hash_t {
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mp_obj_base_t base;
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char state[0];
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} mp_obj_hash_t;
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STATIC mp_obj_t hash_update(mp_obj_t self_in, mp_obj_t arg);
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STATIC mp_obj_t hash_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
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mp_arg_check_num(n_args, n_kw, 0, 1, false);
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mp_obj_hash_t *o = m_new_obj_var(mp_obj_hash_t, char, sizeof(SHA256_CTX));
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o->base.type = type_in;
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sha256_init((SHA256_CTX*)o->state);
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if (n_args == 1) {
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hash_update(o, args[0]);
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}
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return o;
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}
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STATIC mp_obj_t hash_update(mp_obj_t self_in, mp_obj_t arg) {
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mp_obj_hash_t *self = self_in;
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mp_buffer_info_t bufinfo;
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mp_get_buffer_raise(arg, &bufinfo, MP_BUFFER_READ);
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sha256_update((SHA256_CTX*)self->state, bufinfo.buf, bufinfo.len);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_2(hash_update_obj, hash_update);
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STATIC mp_obj_t hash_digest(mp_obj_t self_in) {
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mp_obj_hash_t *self = self_in;
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vstr_t vstr;
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vstr_init_len(&vstr, SHA256_BLOCK_SIZE);
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sha256_final((SHA256_CTX*)self->state, (byte*)vstr.buf);
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return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
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}
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MP_DEFINE_CONST_FUN_OBJ_1(hash_digest_obj, hash_digest);
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STATIC mp_obj_t hash_hexdigest(mp_obj_t self_in) {
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(void)self_in;
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mp_not_implemented("");
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#if 0
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mp_obj_hash_t *self = self_in;
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byte hash[SHA256_BLOCK_SIZE];
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sha256_final((SHA256_CTX*)self->state, hash);
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return mp_obj_new_str((char*)hash, SHA256_BLOCK_SIZE, false);
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#endif
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}
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MP_DEFINE_CONST_FUN_OBJ_1(hash_hexdigest_obj, hash_hexdigest);
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STATIC const mp_map_elem_t hash_locals_dict_table[] = {
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{ MP_OBJ_NEW_QSTR(MP_QSTR_update), (mp_obj_t) &hash_update_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_digest), (mp_obj_t) &hash_digest_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_hexdigest), (mp_obj_t) &hash_hexdigest_obj },
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};
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STATIC MP_DEFINE_CONST_DICT(hash_locals_dict, hash_locals_dict_table);
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STATIC const mp_obj_type_t sha256_type = {
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{ &mp_type_type },
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.name = MP_QSTR_sha256,
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.make_new = hash_make_new,
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.locals_dict = (mp_obj_t)&hash_locals_dict,
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};
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STATIC const mp_map_elem_t mp_module_hashlib_globals_table[] = {
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{ MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_uhashlib) },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_sha256), (mp_obj_t)&sha256_type },
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};
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STATIC MP_DEFINE_CONST_DICT(mp_module_hashlib_globals, mp_module_hashlib_globals_table);
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const mp_obj_module_t mp_module_uhashlib = {
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.base = { &mp_type_module },
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.name = MP_QSTR_uhashlib,
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.globals = (mp_obj_dict_t*)&mp_module_hashlib_globals,
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};
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#include "crypto-algorithms/sha256.c"
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#endif //MICROPY_PY_UHASHLIB
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