diff options
Diffstat (limited to 'libs/libtox/src/toxencryptsave/crypto_pwhash_scryptsalsa208sha256/pbkdf2-sha256.c')
| -rw-r--r-- | libs/libtox/src/toxencryptsave/crypto_pwhash_scryptsalsa208sha256/pbkdf2-sha256.c | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/libs/libtox/src/toxencryptsave/crypto_pwhash_scryptsalsa208sha256/pbkdf2-sha256.c b/libs/libtox/src/toxencryptsave/crypto_pwhash_scryptsalsa208sha256/pbkdf2-sha256.c deleted file mode 100644 index 3dfe54db5f..0000000000 --- a/libs/libtox/src/toxencryptsave/crypto_pwhash_scryptsalsa208sha256/pbkdf2-sha256.c +++ /dev/null @@ -1,97 +0,0 @@ -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif -#ifdef VANILLA_NACL /* toxcore only uses this when libsodium is unavailable */ - -/*- - * Copyright 2005,2007,2009 Colin Percival - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include <sys/types.h> - -#include <stdint.h> -#include <stdlib.h> -#include <string.h> - -#include <crypto_hash_sha256.h> -#include <crypto_auth_hmacsha256.h> - -#include "pbkdf2-sha256.h" -#include "sysendian.h" -#include "utils.h" - -/** - * PBKDF2_SHA256(passwd, passwdlen, salt, saltlen, c, buf, dkLen): - * Compute PBKDF2(passwd, salt, c, dkLen) using HMAC-SHA256 as the PRF, and - * write the output to buf. The value dkLen must be at most 32 * (2^32 - 1). - */ -void -PBKDF2_SHA256(const uint8_t * passwd, size_t passwdlen, const uint8_t * salt, - size_t saltlen, uint64_t c, uint8_t * buf, size_t dkLen) -{ - uint8_t key[32] = {0}; - size_t i; - uint8_t salt_and_ivec[saltlen + 4]; - uint8_t U[32]; - uint8_t T[32]; - uint64_t j; - int k; - size_t clen; - - if (passwdlen > 32) { - /* For some reason libsodium allows 64byte keys meaning keys - * between 32byte and 64bytes are not compatible with libsodium. - toxencryptsave should only give 32byte passwds so this isn't an issue here.*/ - crypto_hash_sha256(key, passwd, passwdlen); - } else { - memcpy(key, passwd, passwdlen); - } - - memcpy(salt_and_ivec, salt, saltlen); - - for (i = 0; i * 32 < dkLen; i++) { - be32enc(salt_and_ivec + saltlen, (uint32_t)(i + 1)); - crypto_auth_hmacsha256(U, salt_and_ivec, sizeof(salt_and_ivec), key); - - memcpy(T, U, 32); - - for (j = 2; j <= c; j++) { - crypto_auth_hmacsha256(U, U, 32, key); - - for (k = 0; k < 32; k++) { - T[k] ^= U[k]; - } - } - - clen = dkLen - i * 32; - if (clen > 32) { - clen = 32; - } - memcpy(&buf[i * 32], T, clen); - } - sodium_memzero((void *) key, sizeof(key)); -} - -#endif |