dropbear: eax_decrypt_verify_memory.c comparison

put back the 0.95 makefile which was inadvertently merged over

comparison

equal deleted inserted replaced

--1:000000000000
+:d7da3b1e1540
+/* 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
+*/
+/* EAX Implementation by Tom St Denis */
+#include "mycrypt.h"
+#ifdef EAX_MODE
+int eax_decrypt_verify_memory(int cipher,
+const unsigned char *key,    unsigned long keylen,
+const unsigned char *nonce,  unsigned long noncelen,
+const unsigned char *header, unsigned long headerlen,
+const unsigned char *ct,     unsigned long ctlen,
+unsigned char *pt,
+unsigned char *tag,    unsigned long taglen,
+int           *res)
+{
+int err;
+eax_state eax;
+unsigned char buf[MAXBLOCKSIZE];
+unsigned long buflen;
+_ARGCHK(res != NULL);
+/* default to zero */
+*res = 0;
+if ((err = eax_init(&eax, cipher, key, keylen, nonce, noncelen, header, headerlen)) != CRYPT_OK) {
+return err;
+}
+if ((err = eax_decrypt(&eax, ct, pt, ctlen)) != CRYPT_OK) {
+return err;
+}
+buflen = MIN(sizeof(buf), taglen);
+if ((err = eax_done(&eax, buf, &buflen)) != CRYPT_OK) {
+return err;
+}
+/* compare tags */
+if (buflen >= taglen && memcmp(buf, tag, taglen) == 0) {
+*res = 1;
+}
+#ifdef CLEAN_STACK
+zeromem(buf, sizeof(buf));
+#endif
+return CRYPT_OK;
+}
+#endif

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