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add trezor.crypto.bip39.seed

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This commit is contained in:
Pavol Rusnak 2016-05-15 22:05:44 +02:00
parent 910926e25c
commit 8f7fc96301
No known key found for this signature in database
GPG Key ID: 91F3B339B9A02A3D
3 changed files with 39 additions and 28 deletions
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10
docs/api.md
View File

@ -34,13 +34,13 @@ Convert base58 encoded string to bytes and verify checksum.
###trezor.crypto.bip39
``` python
def trezor.crypto.bip39.generate(strength: int) -> tuple
def trezor.crypto.bip39.generate(strength: int) -> str
```
Generate a mnemonic of given strength (128, 160, 192, 224 and 256 bits)
``` python
def trezor.crypto.bip39.from_data(data: bytes) -> tuple
def trezor.crypto.bip39.from_data(data: bytes) -> str
```
Generate a mnemonic from given data (of 16, 20, 24, 28 and 32 bytes)
@ -51,6 +51,12 @@ def trezor.crypto.bip39.check(mnemonic: str) -> bool
Check whether given mnemonic is valid
``` python
def trezor.crypto.bip39.seed(mnemonic: str, passphrase: str) -> bytes
```
Generate seed from mnemonic and passphrase
###trezor.crypto.curve

54
extmod/modtrezorcrypto/modtrezorcrypto-bip39.h
View File

@ -20,7 +20,7 @@ STATIC mp_obj_t mod_TrezorCrypto_Bip39_make_new(const mp_obj_type_t *type, size_
return MP_OBJ_FROM_PTR(o);
}
/// def trezor.crypto.bip39.generate(strength: int) -> tuple
/// def trezor.crypto.bip39.generate(strength: int) -> str
///
/// Generate a mnemonic of given strength (128, 160, 192, 224 and 256 bits)
///
@ -29,21 +29,15 @@ STATIC mp_obj_t mod_TrezorCrypto_Bip39_generate(mp_obj_t self, mp_obj_t strength
if (bits % 32 || bits < 128 || bits > 256) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, "Invalid bit strength (only 128, 160, 192, 224 and 256 values are allowed)"));
}
int words = bits / 32 * 3;
const char * const *wordlist = mnemonic_wordlist();
const uint16_t *mnemo = mnemonic_generate_indexes(bits);
mp_obj_tuple_t *tuple = MP_OBJ_TO_PTR(mp_obj_new_tuple(words, NULL));
for (int i = 0; i < words; i++) {
vstr_t vstr;
vstr_init_len(&vstr, strlen(wordlist[mnemo[i]]));
strcpy(vstr.buf, wordlist[mnemo[i]]);
tuple->items[i] = mp_obj_new_str_from_vstr(&mp_type_str, &vstr);
}
return MP_OBJ_FROM_PTR(tuple);
const char *mnemo = mnemonic_generate(bits);
vstr_t vstr;
vstr_init_len(&vstr, strlen(mnemo));
strcpy(vstr.buf, mnemo);
return mp_obj_new_str_from_vstr(&mp_type_str, &vstr);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_TrezorCrypto_Bip39_generate_obj, mod_TrezorCrypto_Bip39_generate);
/// def trezor.crypto.bip39.from_data(data: bytes) -> tuple
/// def trezor.crypto.bip39.from_data(data: bytes) -> str
///
/// Generate a mnemonic from given data (of 16, 20, 24, 28 and 32 bytes)
///
@ -53,17 +47,11 @@ STATIC mp_obj_t mod_TrezorCrypto_Bip39_from_data(mp_obj_t self, mp_obj_t data) {
if (bin.len % 4 || bin.len < 16 || bin.len > 32) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, "Invalid data length (only 16, 20, 24, 28 and 32 bytes are allowed)"));
}
int words = bin.len / 4 * 3;
const char * const *wordlist = mnemonic_wordlist();
const uint16_t *mnemo = mnemonic_from_data_indexes(bin.buf, bin.len);
mp_obj_tuple_t *tuple = MP_OBJ_TO_PTR(mp_obj_new_tuple(words, NULL));
for (int i = 0; i < words; i++) {
vstr_t vstr;
vstr_init_len(&vstr, strlen(wordlist[mnemo[i]]));
strcpy(vstr.buf, wordlist[mnemo[i]]);
tuple->items[i] = mp_obj_new_str_from_vstr(&mp_type_str, &vstr);
}
return MP_OBJ_FROM_PTR(tuple);
const char *mnemo = mnemonic_from_data(bin.buf, bin.len);
vstr_t vstr;
vstr_init_len(&vstr, strlen(mnemo));
strcpy(vstr.buf, mnemo);
return mp_obj_new_str_from_vstr(&mp_type_str, &vstr);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_TrezorCrypto_Bip39_from_data_obj, mod_TrezorCrypto_Bip39_from_data);
@ -78,11 +66,27 @@ STATIC mp_obj_t mod_TrezorCrypto_Bip39_check(mp_obj_t self, mp_obj_t mnemonic) {
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_TrezorCrypto_Bip39_check_obj, mod_TrezorCrypto_Bip39_check);
/// def trezor.crypto.bip39.seed(mnemonic: str, passphrase: str) -> bytes
///
/// Generate seed from mnemonic and passphrase
///
STATIC mp_obj_t mod_TrezorCrypto_Bip39_seed(mp_obj_t self, mp_obj_t mnemonic, mp_obj_t passphrase) {
mp_buffer_info_t mnemo;
mp_buffer_info_t phrase;
mp_get_buffer_raise(mnemonic, &mnemo, MP_BUFFER_READ);
mp_get_buffer_raise(passphrase, &phrase, MP_BUFFER_READ);
vstr_t vstr;
vstr_init_len(&vstr, 64);
mnemonic_to_seed(mnemo.buf, phrase.buf, (uint8_t *)vstr.buf, NULL); // no callback for now
return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_3(mod_TrezorCrypto_Bip39_seed_obj, mod_TrezorCrypto_Bip39_seed);
STATIC const mp_rom_map_elem_t mod_TrezorCrypto_Bip39_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_generate), MP_ROM_PTR(&mod_TrezorCrypto_Bip39_generate_obj) },
{ MP_ROM_QSTR(MP_QSTR_from_data), MP_ROM_PTR(&mod_TrezorCrypto_Bip39_from_data_obj) },
{ MP_ROM_QSTR(MP_QSTR_check), MP_ROM_PTR(&mod_TrezorCrypto_Bip39_check_obj) },
// { MP_ROM_QSTR(MP_QSTR_seed), MP_ROM_PTR(&mod_TrezorCrypto_Bip39_seed_obj) },
{ MP_ROM_QSTR(MP_QSTR_seed), MP_ROM_PTR(&mod_TrezorCrypto_Bip39_seed_obj) },
};
STATIC MP_DEFINE_CONST_DICT(mod_TrezorCrypto_Bip39_locals_dict, mod_TrezorCrypto_Bip39_locals_dict_table);

3
src/tests/test_crypto_bip39.py
View File

@ -36,7 +36,8 @@ class TestCryptoBip39(unittest.TestCase):
('15da872c95a13dd738fbf50e427583ad61f18fd99f628c417a61cf8343c90419', 'beyond stage sleep clip because twist token leaf atom beauty genius food business side grid unable middle armed observe pair crouch tonight away coconut', 'b15509eaa2d09d3efd3e006ef42151b30367dc6e3aa5e44caba3fe4d3e352e65101fbdb86a96776b91946ff06f8eac594dc6ee1d3e82a42dfe1b40fef6bcc3fd'),
]
for d, m, s in v:
self.assertEqual(bip39.from_data(unhexlify(d)), tuple(m.split(' ')))
self.assertEqual(bip39.from_data(unhexlify(d)), m)
self.assertEqual(bip39.seed(m, 'TREZOR'), unhexlify(s))
def test_check_ok(self):
v = [