diff options
author | Matt Johnston <matt@ucc.asn.au> | 2018-02-17 19:29:51 +0800 |
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committer | Matt Johnston <matt@ucc.asn.au> | 2018-02-17 19:29:51 +0800 |
commit | 7e8094d53a1c01ac671156ff2e67157b64d01a3a (patch) | |
tree | c88345f5bdd118eb9414dff5ab5c307bb1806c57 /libtomcrypt/src/mac/blake2/blake2smac_memory_multi.c | |
parent | f7a664f127d3dfde0e7c7a9ca74b1d14f9a2f983 (diff) | |
parent | f042eb41ab0d31f8ba0c5ccc9c848ad01f08f986 (diff) |
merge from main
--HG--
branch : fuzz
Diffstat (limited to 'libtomcrypt/src/mac/blake2/blake2smac_memory_multi.c')
-rw-r--r-- | libtomcrypt/src/mac/blake2/blake2smac_memory_multi.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/libtomcrypt/src/mac/blake2/blake2smac_memory_multi.c b/libtomcrypt/src/mac/blake2/blake2smac_memory_multi.c new file mode 100644 index 0000000..0985c42 --- /dev/null +++ b/libtomcrypt/src/mac/blake2/blake2smac_memory_multi.c @@ -0,0 +1,62 @@ +/* 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" +#include <stdarg.h> + +#ifdef LTC_BLAKE2SMAC + +/** + BLAKE2S MAC multiple blocks of memory to produce the authentication tag + @param key The secret key + @param keylen The length of the secret key (octets) + @param mac [out] Destination of the authentication tag + @param maclen [in/out] Max size and resulting size of authentication tag + @param in The data to BLAKE2S MAC + @param inlen The length of the data to BLAKE2S MAC (octets) + @param ... tuples of (data,len) pairs to BLAKE2S MAC, terminated with a (NULL,x) (x=don't care) + @return CRYPT_OK if successful +*/ +int blake2smac_memory_multi(const unsigned char *key, unsigned long keylen, unsigned char *mac, unsigned long *maclen, const unsigned char *in, unsigned long inlen, ...) +{ + blake2smac_state st; + int err; + va_list args; + const unsigned char *curptr; + unsigned long curlen; + + LTC_ARGCHK(key != NULL); + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(mac != NULL); + LTC_ARGCHK(maclen != NULL); + + va_start(args, inlen); + curptr = in; + curlen = inlen; + if ((err = blake2smac_init(&st, *maclen, key, keylen)) != CRYPT_OK) { goto LBL_ERR; } + for (;;) { + if ((err = blake2smac_process(&st, curptr, curlen)) != CRYPT_OK) { goto LBL_ERR; } + curptr = va_arg(args, const unsigned char*); + if (curptr == NULL) break; + curlen = va_arg(args, unsigned long); + } + err = blake2smac_done(&st, mac, maclen); +LBL_ERR: +#ifdef LTC_CLEAN_STACK + zeromem(&st, sizeof(blake2smac_state)); +#endif + va_end(args); + return err; +} + +#endif + +/* ref: $Format:%D$ */ +/* git commit: $Format:%H$ */ +/* commit time: $Format:%ai$ */ |