1
0
mirror of https://github.com/trezor/trezor-firmware.git synced 2024-12-24 15:28:10 +00:00
trezor-firmware/micropython/extmod/modtrezorcrypto/modtrezorcrypto-sha1.h

88 lines
3.1 KiB
C

/*
* Copyright (c) Pavol Rusnak, SatoshiLabs
*
* Licensed under TREZOR License
* see LICENSE file for details
*/
#include "py/objstr.h"
#include "trezor-crypto/sha2.h"
typedef struct _mp_obj_Sha1_t {
mp_obj_base_t base;
SHA1_CTX ctx;
} mp_obj_Sha1_t;
STATIC mp_obj_t mod_TrezorCrypto_Sha1_update(mp_obj_t self, mp_obj_t data);
/// def trezor.crypto.hashlib.sha1(data: bytes=None) -> Sha1:
/// '''
/// Creates a hash context object.
/// '''
STATIC mp_obj_t mod_TrezorCrypto_Sha1_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
mp_arg_check_num(n_args, n_kw, 0, 1, false);
mp_obj_Sha1_t *o = m_new_obj(mp_obj_Sha1_t);
o->base.type = type;
sha1_Init(&(o->ctx));
// constructor called with bytes/str as first parameter
if (n_args == 1) {
mod_TrezorCrypto_Sha1_update(MP_OBJ_FROM_PTR(o), args[0]);
}
return MP_OBJ_FROM_PTR(o);
}
/// def trezor.crypto.hashlib.sha1.update(self, data: bytes) -> None:
/// '''
/// Update the hash context with hashed data.
/// '''
STATIC mp_obj_t mod_TrezorCrypto_Sha1_update(mp_obj_t self, mp_obj_t data) {
mp_obj_Sha1_t *o = MP_OBJ_TO_PTR(self);
mp_buffer_info_t msg;
mp_get_buffer_raise(data, &msg, MP_BUFFER_READ);
if (msg.len > 0) {
sha1_Update(&(o->ctx), msg.buf, msg.len);
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_TrezorCrypto_Sha1_update_obj, mod_TrezorCrypto_Sha1_update);
/// def trezor.crypto.hashlib.sha1.digest(self) -> bytes:
/// '''
/// Returns the digest of hashed data.
/// '''
STATIC mp_obj_t mod_TrezorCrypto_Sha1_digest(mp_obj_t self) {
mp_obj_Sha1_t *o = MP_OBJ_TO_PTR(self);
vstr_t vstr;
vstr_init_len(&vstr, SHA1_DIGEST_LENGTH);
SHA1_CTX ctx;
memcpy(&ctx, &(o->ctx), sizeof(SHA1_CTX));
sha1_Final(&ctx, (uint8_t *)vstr.buf);
memset(&ctx, 0, sizeof(SHA1_CTX));
return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_TrezorCrypto_Sha1_digest_obj, mod_TrezorCrypto_Sha1_digest);
STATIC mp_obj_t mod_TrezorCrypto_Sha1___del__(mp_obj_t self) {
mp_obj_Sha1_t *o = MP_OBJ_TO_PTR(self);
memset(&(o->ctx), 0, sizeof(SHA1_CTX));
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_TrezorCrypto_Sha1___del___obj, mod_TrezorCrypto_Sha1___del__);
STATIC const mp_rom_map_elem_t mod_TrezorCrypto_Sha1_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_update), MP_ROM_PTR(&mod_TrezorCrypto_Sha1_update_obj) },
{ MP_ROM_QSTR(MP_QSTR_digest), MP_ROM_PTR(&mod_TrezorCrypto_Sha1_digest_obj) },
{ MP_ROM_QSTR(MP_QSTR___del__), MP_ROM_PTR(&mod_TrezorCrypto_Sha1___del___obj) },
{ MP_ROM_QSTR(MP_QSTR_block_size), MP_OBJ_NEW_SMALL_INT(SHA1_BLOCK_LENGTH) },
{ MP_ROM_QSTR(MP_QSTR_digest_size), MP_OBJ_NEW_SMALL_INT(SHA1_DIGEST_LENGTH) },
};
STATIC MP_DEFINE_CONST_DICT(mod_TrezorCrypto_Sha1_locals_dict, mod_TrezorCrypto_Sha1_locals_dict_table);
STATIC const mp_obj_type_t mod_TrezorCrypto_Sha1_type = {
{ &mp_type_type },
.name = MP_QSTR_Sha1,
.make_new = mod_TrezorCrypto_Sha1_make_new,
.locals_dict = (void*)&mod_TrezorCrypto_Sha1_locals_dict,
};