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