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trezor-firmware/bip39.h
Jochen Hoenicke 1b42fde852 Off by one error in word length.
This could lead to a buffer overrun if the final 0 byte is
written to current_word[j] after the loop.

Also document the limit of passphrase in mnemonic_to_seed.
2015-03-20 21:46:32 +01:00

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1.7 KiB
C

/**
* Copyright (c) 2013-2014 Tomas Dzetkulic
* Copyright (c) 2013-2014 Pavol Rusnak
*
* 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.
*/
#ifndef __BIP39_H__
#define __BIP39_H__
#include <stdint.h>
#define BIP39_PBKDF2_ROUNDS 2048
const char *mnemonic_generate(int strength); // strength in bits
const char *mnemonic_from_data(const uint8_t *data, int len);
int mnemonic_check(const char *mnemonic);
// passphrase must be at most 256 characters or code may crash
void mnemonic_to_seed(const char *mnemonic, const char *passphrase, uint8_t seed[512 / 8], void (*progress_callback)(uint32_t current, uint32_t total));
const char * const *mnemonic_wordlist(void);
#endif