Mercurial > dropbear
view libtomcrypt/src/mac/blake2/blake2bmac.c @ 1696:d18fa38c1fd4
initialise variable to stop warning
author | Matt Johnston <matt@ucc.asn.au> |
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date | Thu, 28 May 2020 22:02:03 +0800 (2020-05-28) |
parents | 6dba84798cd5 |
children |
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/* LibTomCrypt, modular cryptographic library -- Tom St Denis * * LibTomCrypt is a library that provides various cryptographic * algorithms in a highly modular and flexible manner. * * The library is free for all purposes without any express * guarantee it works. */ #include "tomcrypt.h" #ifdef LTC_BLAKE2BMAC /** Initialize an BLAKE2B MAC context. @param st The BLAKE2B MAC state @param outlen The size of the MAC output (octets) @param key The secret key @param keylen The length of the secret key (octets) @return CRYPT_OK if successful */ int blake2bmac_init(blake2bmac_state *st, unsigned long outlen, const unsigned char *key, unsigned long keylen) { LTC_ARGCHK(st != NULL); LTC_ARGCHK(key != NULL); return blake2b_init(st, outlen, key, keylen); } /** Process data through BLAKE2B MAC @param st The BLAKE2B MAC state @param in The data to send through HMAC @param inlen The length of the data to HMAC (octets) @return CRYPT_OK if successful */ int blake2bmac_process(blake2bmac_state *st, const unsigned char *in, unsigned long inlen) { if (inlen == 0) return CRYPT_OK; /* nothing to do */ LTC_ARGCHK(st != NULL); LTC_ARGCHK(in != NULL); return blake2b_process(st, in, inlen); } /** Terminate a BLAKE2B MAC session @param st The BLAKE2B MAC state @param mac [out] The destination of the BLAKE2B MAC authentication tag @param maclen [in/out] The max size and resulting size of the BLAKE2B MAC authentication tag @return CRYPT_OK if successful */ int blake2bmac_done(blake2bmac_state *st, unsigned char *mac, unsigned long *maclen) { LTC_ARGCHK(st != NULL); LTC_ARGCHK(mac != NULL); LTC_ARGCHK(maclen != NULL); LTC_ARGCHK(*maclen >= st->blake2b.outlen); *maclen = st->blake2b.outlen; return blake2b_done(st, mac); } #endif /* ref: $Format:%D$ */ /* git commit: $Format:%H$ */ /* commit time: $Format:%ai$ */