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authorMatt Johnston <matt@ucc.asn.au>2018-02-17 19:29:51 +0800
committerMatt Johnston <matt@ucc.asn.au>2018-02-17 19:29:51 +0800
commit7e8094d53a1c01ac671156ff2e67157b64d01a3a (patch)
treec88345f5bdd118eb9414dff5ab5c307bb1806c57 /libtomcrypt/src/mac/blake2/blake2smac_memory_multi.c
parentf7a664f127d3dfde0e7c7a9ca74b1d14f9a2f983 (diff)
parentf042eb41ab0d31f8ba0c5ccc9c848ad01f08f986 (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.c62
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: $Format:%ai$ */