diff options
Diffstat (limited to 'libtomcrypt/src/mac/blake2/blake2bmac_memory.c')
| -rw-r--r-- | libtomcrypt/src/mac/blake2/blake2bmac_memory.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/libtomcrypt/src/mac/blake2/blake2bmac_memory.c b/libtomcrypt/src/mac/blake2/blake2bmac_memory.c new file mode 100644 index 0000000..45ddd6f --- /dev/null +++ b/libtomcrypt/src/mac/blake2/blake2bmac_memory.c @@ -0,0 +1,48 @@ +/* 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 + +/** + BLAKE2B MAC a block of memory to produce the authentication tag + @param key The secret key + @param keylen The length of the secret key (octets) + @param in The data to BLAKE2B MAC + @param inlen The length of the data to BLAKE2B MAC (octets) + @param mac [out] Destination of the authentication tag + @param maclen [in/out] Max size and resulting size of authentication tag + @return CRYPT_OK if successful +*/ +int blake2bmac_memory(const unsigned char *key, unsigned long keylen, const unsigned char *in, unsigned long inlen, unsigned char *mac, unsigned long *maclen) +{ + blake2bmac_state st; + int err; + + LTC_ARGCHK(key != NULL); + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(mac != NULL); + LTC_ARGCHK(maclen != NULL); + + if ((err = blake2bmac_init(&st, *maclen, key, keylen)) != CRYPT_OK) { goto LBL_ERR; } + if ((err = blake2bmac_process(&st, in, inlen)) != CRYPT_OK) { goto LBL_ERR; } + err = blake2bmac_done(&st, mac, maclen); +LBL_ERR: +#ifdef LTC_CLEAN_STACK + zeromem(&st, sizeof(blake2bmac_state)); +#endif + return err; +} + +#endif + +/* ref: $Format:%D$ */ +/* git commit: $Format:%H$ */ +/* commit time: $Format:%ai$ */ |