1f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/* LibTomCrypt, modular cryptographic library -- Tom St Denis 2f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * 3f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * LibTomCrypt is a library that provides various cryptographic 4f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * algorithms in a highly modular and flexible manner. 5f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * 6f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * The library is free for all purposes without any express 7f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * guarantee it works. 8f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * 9f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.com 10f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project */ 11f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "tomcrypt.h" 12f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include <stdarg.h> 13f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 14f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/** 15f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project @file f9_memory_multi.c 16f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project f9 support, process multiple blocks of memory, Tom St Denis 17f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project*/ 18f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 19f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#ifdef LTC_F9_MODE 20f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 21f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/** 22f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project f9 multiple blocks of memory 23f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project @param cipher The index of the desired cipher 24f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project @param key The secret key 25f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project @param keylen The length of the secret key (octets) 26f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project @param out [out] The destination of the authentication tag 27f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project @param outlen [in/out] The max size and resulting size of the authentication tag (octets) 28f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project @param in The data to send through f9 29f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project @param inlen The length of the data to send through f9 (octets) 30f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project @param ... tuples of (data,len) pairs to f9, terminated with a (NULL,x) (x=don't care) 31f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project @return CRYPT_OK if successful 32f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project*/ 33f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectint f9_memory_multi(int cipher, 34f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project const unsigned char *key, unsigned long keylen, 35f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned char *out, unsigned long *outlen, 36f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project const unsigned char *in, unsigned long inlen, ...) 37f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project{ 38f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project int err; 39f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project f9_state *f9; 40f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project va_list args; 41f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project const unsigned char *curptr; 42f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned long curlen; 43f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 44f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project LTC_ARGCHK(key != NULL); 45f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project LTC_ARGCHK(in != NULL); 46f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project LTC_ARGCHK(out != NULL); 47f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project LTC_ARGCHK(outlen != NULL); 48f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 49f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* allocate ram for f9 state */ 50f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project f9 = XMALLOC(sizeof(f9_state)); 51f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (f9 == NULL) { 52f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project return CRYPT_MEM; 53f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 54f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 55f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* f9 process the message */ 56f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if ((err = f9_init(f9, cipher, key, keylen)) != CRYPT_OK) { 57f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project goto LBL_ERR; 58f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 59f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project va_start(args, inlen); 60f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project curptr = in; 61f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project curlen = inlen; 62f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project for (;;) { 63f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* process buf */ 64f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if ((err = f9_process(f9, curptr, curlen)) != CRYPT_OK) { 65f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project goto LBL_ERR; 66f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 67f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* step to next */ 68f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project curptr = va_arg(args, const unsigned char*); 69f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (curptr == NULL) { 70f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project break; 71f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 72f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project curlen = va_arg(args, unsigned long); 73f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 74f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if ((err = f9_done(f9, out, outlen)) != CRYPT_OK) { 75f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project goto LBL_ERR; 76f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 77f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source ProjectLBL_ERR: 78f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#ifdef LTC_CLEAN_STACK 79f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project zeromem(f9, sizeof(f9_state)); 80f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#endif 81f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project XFREE(f9); 82f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project va_end(args); 83f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project return err; 84f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 85f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 86f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#endif 87f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 88f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/* $Source: /cvs/libtom/libtomcrypt/src/mac/f9/f9_memory_multi.c,v $ */ 89f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/* $Revision: 1.2 $ */ 90f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/* $Date: 2006/11/08 21:50:13 $ */ 91