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ERP: Add HMAC-SHA256 KDF (RFC 5295)

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This is needed for ERP key derivation.

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2014-11-29 21:28:24 +02:00
parent 2a5156a66c
commit 0087061de7
2 changed files with 80 additions and 1 deletions
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5
src/crypto/sha256.h
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@ -1,6 +1,6 @@
/*
* SHA256 hash implementation and interface functions
* Copyright (c) 2003-2013, Jouni Malinen <j@w1.fi>
* Copyright (c) 2003-2014, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
@ -23,5 +23,8 @@ void sha256_prf_bits(const u8 *key, size_t key_len, const char *label,
void tls_prf_sha256(const u8 *secret, size_t secret_len,
const char *label, const u8 *seed, size_t seed_len,
u8 *out, size_t outlen);
int hmac_sha256_kdf(const u8 *secret, size_t secret_len,
const char *label, const u8 *seed, size_t seed_len,
u8 *out, size_t outlen);
#endif /* SHA256_H */