diff options
Diffstat (limited to 'freebsd/contrib/wpa/src/crypto/sha256-prf.c')
| -rw-r--r-- | freebsd/contrib/wpa/src/crypto/sha256-prf.c | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/freebsd/contrib/wpa/src/crypto/sha256-prf.c b/freebsd/contrib/wpa/src/crypto/sha256-prf.c index 76496214..e2150e21 100644 --- a/freebsd/contrib/wpa/src/crypto/sha256-prf.c +++ b/freebsd/contrib/wpa/src/crypto/sha256-prf.c @@ -2,7 +2,7 @@ /* * SHA256-based PRF (IEEE 802.11r) - * Copyright (c) 2003-2013, Jouni Malinen <j@w1.fi> + * Copyright (c) 2003-2016, Jouni Malinen <j@w1.fi> * * This software may be distributed under the terms of the BSD license. * See README for more details. @@ -24,14 +24,16 @@ * @data_len: Length of the data * @buf: Buffer for the generated pseudo-random key * @buf_len: Number of bytes of key to generate + * Returns: 0 on success, -1 on failure * * This function is used to derive new, cryptographically separate keys from a * given key. */ -void sha256_prf(const u8 *key, size_t key_len, const char *label, +int sha256_prf(const u8 *key, size_t key_len, const char *label, const u8 *data, size_t data_len, u8 *buf, size_t buf_len) { - sha256_prf_bits(key, key_len, label, data, data_len, buf, buf_len * 8); + return sha256_prf_bits(key, key_len, label, data, data_len, buf, + buf_len * 8); } @@ -44,15 +46,16 @@ void sha256_prf(const u8 *key, size_t key_len, const char *label, * @data_len: Length of the data * @buf: Buffer for the generated pseudo-random key * @buf_len: Number of bits of key to generate + * Returns: 0 on success, -1 on failure * * This function is used to derive new, cryptographically separate keys from a * given key. If the requested buf_len is not divisible by eight, the least * significant 1-7 bits of the last octet in the output are not part of the * requested output. */ -void sha256_prf_bits(const u8 *key, size_t key_len, const char *label, - const u8 *data, size_t data_len, u8 *buf, - size_t buf_len_bits) +int sha256_prf_bits(const u8 *key, size_t key_len, const char *label, + const u8 *data, size_t data_len, u8 *buf, + size_t buf_len_bits) { u16 counter = 1; size_t pos, plen; @@ -77,11 +80,14 @@ void sha256_prf_bits(const u8 *key, size_t key_len, const char *label, plen = buf_len - pos; WPA_PUT_LE16(counter_le, counter); if (plen >= SHA256_MAC_LEN) { - hmac_sha256_vector(key, key_len, 4, addr, len, - &buf[pos]); + if (hmac_sha256_vector(key, key_len, 4, addr, len, + &buf[pos]) < 0) + return -1; pos += SHA256_MAC_LEN; } else { - hmac_sha256_vector(key, key_len, 4, addr, len, hash); + if (hmac_sha256_vector(key, key_len, 4, addr, len, + hash) < 0) + return -1; os_memcpy(&buf[pos], hash, plen); pos += plen; break; @@ -99,4 +105,6 @@ void sha256_prf_bits(const u8 *key, size_t key_len, const char *label, } os_memset(hash, 0, sizeof(hash)); + + return 0; } |