dropbear: omac_memory.c comparison

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+:7faae8f46238
+/* 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.
+*
+* Tom St Denis, [email protected], http://libtomcrypt.org
+*/
+/* OMAC1 Support by Tom St Denis (for 64 and 128 bit block ciphers only) */
+#include "mycrypt.h"
+#ifdef OMAC
+int omac_memory(int cipher,
+const unsigned char *key, unsigned long keylen,
+const unsigned char *msg, unsigned long msglen,
+unsigned char *out, unsigned long *outlen)
+{
+int err;
+omac_state omac;
+_ARGCHK(key != NULL);
+_ARGCHK(msg != NULL);
+_ARGCHK(out != NULL);
+_ARGCHK(outlen != NULL);
+if ((err = omac_init(&omac, cipher, key, keylen)) != CRYPT_OK) {
+return err;
+}
+if ((err = omac_process(&omac, msg, msglen)) != CRYPT_OK) {
+return err;
+}
+if ((err = omac_done(&omac, out, outlen)) != CRYPT_OK) {
+return err;
+}
+return CRYPT_OK;
+}
+#endif

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