arno/trezor-firmware
1
0
Fork 0
mirror of https://github.com/trezor/trezor-firmware.git synced 2025-01-03 12:00:59 +00:00
Code Issues Releases Wiki Activity

use fixed param size for mnemonic function

Browse Source
This commit is contained in:
Pavol Rusnak 2013-11-28 00:53:09 +01:00
parent 6b66f29c3b
commit 02adc15ec9
2 changed files with 4 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
bip39.c
View File

@ -63,10 +63,9 @@ const char *mnemonic_from_data(const uint8_t *data, int len)
return mnemo; return mnemo;
} }
void mnemonic_to_seed(const char *mnemonic, const char *passphrase, uint8_t *seed) void mnemonic_to_seed(const char *mnemonic, const char *passphrase, uint8_t seed[512 / 8])
{ {
static uint8_t k[8 + 256]; static uint8_t k[8 + 256];
uint8_t *m = seed;
int i, kl; int i, kl;
kl = strlen(passphrase); kl = strlen(passphrase);
@ -74,8 +73,8 @@ void mnemonic_to_seed(const char *mnemonic, const char *passphrase, uint8_t *see
memcpy(k + 8, passphrase, kl); memcpy(k + 8, passphrase, kl);
kl += 8; kl += 8;
hmac_sha512(k, kl, (const uint8_t *)mnemonic, strlen(mnemonic), m); hmac_sha512(k, kl, (const uint8_t *)mnemonic, strlen(mnemonic), seed);
for (i = 1; i < HMAC_ROUNDS; i++) { for (i = 1; i < HMAC_ROUNDS; i++) {
hmac_sha512(k, kl, m, 512 / 8, m); hmac_sha512(k, kl, seed, 512 / 8, seed);
} }
} }

2
bip39.h
View File

@ -8,6 +8,6 @@ const char *mnemonic_generate(int strength); // strength in bits
const char *mnemonic_from_data(const uint8_t *data, int len); const char *mnemonic_from_data(const uint8_t *data, int len);
void mnemonic_to_seed(const char *mnemonic, const char *passphrase, uint8_t *seed); void mnemonic_to_seed(const char *mnemonic, const char *passphrase, uint8_t seed[512 / 8]);
#endif #endif