Mercurial > dropbear
view libtomcrypt/src/encauth/eax/eax_encrypt_authenticate_memory.c @ 1606:98d2b125eb89
kexhashbuf was much to small in kex fuzzers
author | Matt Johnston <matt@ucc.asn.au> |
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date | Thu, 08 Mar 2018 23:23:19 +0800 |
parents | 6dba84798cd5 |
children |
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/* 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: $Format:%ai$ */