--- /dev/null
+/* 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.
+ */
+
+/**
+ @file eax_encrypt_authenticate_memory.c
+ EAX implementation, encrypt a block of memory, by Tom St Denis
+*/
+#include "tomcrypt.h"
+
+#ifdef LTC_EAX_MODE
+
+/**
+ EAX encrypt and produce an authentication tag
+ @param cipher The index of the cipher desired
+ @param key The secret key to use
+ @param keylen The length of the secret key (octets)
+ @param nonce The session nonce [use once]
+ @param noncelen The length of the nonce
+ @param header The header for the session
+ @param headerlen The length of the header (octets)
+ @param pt The plaintext
+ @param ptlen The length of the plaintext (octets)
+ @param ct [out] The ciphertext
+ @param tag [out] The destination tag
+ @param taglen [in/out] The max size and resulting size of the authentication tag
+ @return CRYPT_OK if successful
+*/
+int eax_encrypt_authenticate_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 *pt, unsigned long ptlen,
+ unsigned char *ct,
+ unsigned char *tag, unsigned long *taglen)
+{
+ int err;
+ eax_state *eax;
+
+ LTC_ARGCHK(key != NULL);
+ LTC_ARGCHK(pt != NULL);
+ LTC_ARGCHK(ct != NULL);
+ LTC_ARGCHK(tag != NULL);
+ LTC_ARGCHK(taglen != NULL);
+
+ eax = XMALLOC(sizeof(*eax));
+
+ if ((err = eax_init(eax, cipher, key, keylen, nonce, noncelen, header, headerlen)) != CRYPT_OK) {
+ goto LBL_ERR;
+ }
+
+ if ((err = eax_encrypt(eax, pt, ct, ptlen)) != CRYPT_OK) {
+ goto LBL_ERR;
+ }
+
+ if ((err = eax_done(eax, tag, taglen)) != CRYPT_OK) {
+ goto LBL_ERR;
+ }
+
+ err = CRYPT_OK;
+LBL_ERR:
+#ifdef LTC_CLEAN_STACK
+ zeromem(eax, sizeof(*eax));
+#endif
+
+ XFREE(eax);
+
+ return err;
+}
+
+#endif
+
+/* ref: $Format:%D$ */
+/* git commit: $Format:%H$ */
+/* commit time: $Format:%ai$ */