145 lines
5.2 KiB
C
145 lines
5.2 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 "py/runtime.h"
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#include "mbedtls/sha256.h"
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#include "mbedtls/sha1.h"
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union sha_ctxs {
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mbedtls_sha256_context sha256;
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mbedtls_sha1_context sha1;
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};
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typedef struct _mp_obj_hash_t {
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mp_obj_base_t base;
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union sha_ctxs state;
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} mp_obj_hash_t;
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STATIC mp_obj_t sha256_update(mp_obj_t self_in, mp_obj_t arg);
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STATIC mp_obj_t sha1_update(mp_obj_t self_in, mp_obj_t arg);
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STATIC mp_obj_t sha256_make_new(const mp_obj_type_t *type,
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size_t n_args, size_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(union sha_ctxs));
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o->base.type = type;
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mbedtls_sha256_init(&o->state.sha256);
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mbedtls_sha256_starts(&o->state.sha256, 0);
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if (n_args == 1) {
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sha256_update(MP_OBJ_FROM_PTR(o), args[0]);
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}
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return MP_OBJ_FROM_PTR(o);
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}
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STATIC mp_obj_t sha1_make_new(const mp_obj_type_t *type,
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size_t n_args, size_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(union sha_ctxs));
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o->base.type = type;
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mbedtls_sha1_init(&o->state.sha1);
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mbedtls_sha1_starts(&o->state.sha1);
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if (n_args == 1) {
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sha1_update(MP_OBJ_FROM_PTR(o), args[0]);
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}
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return MP_OBJ_FROM_PTR(o);
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}
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STATIC mp_obj_t sha256_update(mp_obj_t self_in, mp_obj_t arg) {
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mp_obj_hash_t *self = MP_OBJ_TO_PTR(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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mbedtls_sha256_update(&self->state.sha256, 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(sha256_update_obj, sha256_update);
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STATIC mp_obj_t sha1_update(mp_obj_t self_in, mp_obj_t arg) {
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mp_obj_hash_t *self = MP_OBJ_TO_PTR(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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mbedtls_sha1_update(&self->state.sha1, 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(sha1_update_obj, sha1_update);
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STATIC mp_obj_t sha256_digest(mp_obj_t self_in) {
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mp_obj_hash_t *self = MP_OBJ_TO_PTR(self_in);
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vstr_t vstr;
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vstr_init_len(&vstr, 32);
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mbedtls_sha256_finish(&self->state.sha256, (unsigned char *)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(sha256_digest_obj, sha256_digest);
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STATIC mp_obj_t sha1_digest(mp_obj_t self_in) {
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mp_obj_hash_t *self = MP_OBJ_TO_PTR(self_in);
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vstr_t vstr;
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vstr_init_len(&vstr, 20);
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mbedtls_sha1_finish(&self->state.sha1, (unsigned char *)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(sha1_digest_obj, sha1_digest);
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STATIC const mp_rom_map_elem_t sha256_locals_dict_table[] = {
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{ MP_ROM_QSTR(MP_QSTR_update), MP_ROM_PTR(&sha256_update_obj) },
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{ MP_ROM_QSTR(MP_QSTR_digest), MP_ROM_PTR(&sha256_digest_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(sha256_locals_dict, sha256_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 = sha256_make_new,
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.locals_dict = (void*)&sha256_locals_dict,
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};
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STATIC const mp_rom_map_elem_t sha1_locals_dict_table[] = {
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{ MP_ROM_QSTR(MP_QSTR_update), MP_ROM_PTR(&sha1_update_obj) },
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{ MP_ROM_QSTR(MP_QSTR_digest), MP_ROM_PTR(&sha1_digest_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(sha1_locals_dict, sha1_locals_dict_table);
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STATIC const mp_obj_type_t sha1_type = {
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{ &mp_type_type },
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.name = MP_QSTR_sha1,
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.make_new = sha1_make_new,
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.locals_dict = (void*)&sha1_locals_dict,
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};
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STATIC const mp_rom_map_elem_t mp_module_hashlib_globals_table[] = {
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{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_uhashlib) },
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{ MP_ROM_QSTR(MP_QSTR_sha256), MP_ROM_PTR(&sha256_type) },
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{ MP_ROM_QSTR(MP_QSTR_sha1), MP_ROM_PTR(&sha1_type) },
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};
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STATIC MP_DEFINE_CONST_DICT(mp_module_hashlib_globals,
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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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.globals = (mp_obj_dict_t*)&mp_module_hashlib_globals,
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};
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