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Diffstat (limited to 'src/crypt.h')
| -rw-r--r-- | src/crypt.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/src/crypt.h b/src/crypt.h new file mode 100644 index 0000000..30c0298 --- /dev/null +++ b/src/crypt.h @@ -0,0 +1,80 @@ +/* Copyright (C) 2009-2011, Martin Johansson <martin@fatbob.nu> + Copyright (C) 2005-2011, Thorvald Natvig <thorvald@natvig.com> + + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions + are met: + + - Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + - Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + - Neither the name of the Developers nor the names of its contributors may + be used to endorse or promote products derived from this software without + specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR + CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ +#ifndef CRYPTSTATE_H_34564356 +#define CRYPTSTATE_H_34564356 + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <openssl/rand.h> +#include <openssl/aes.h> + +#include <stdint.h> + +#include <glib.h> +#define bool_t gboolean +#define false FALSE +#define true TRUE + +typedef struct CryptState { + uint8_t raw_key[AES_BLOCK_SIZE]; + uint8_t encrypt_iv[AES_BLOCK_SIZE]; + uint8_t decrypt_iv[AES_BLOCK_SIZE]; + uint8_t decrypt_history[0x100]; + + unsigned int uiGood; + unsigned int uiLate; + unsigned int uiLost; + unsigned int uiResync; + + unsigned int uiRemoteGood; + unsigned int uiRemoteLate; + unsigned int uiRemoteLost; + unsigned int uiRemoteResync; + AES_KEY encrypt_key; + AES_KEY decrypt_key; + + //etimer_t tLastGood; + //etimer_t tLastRequest; + bool_t bInit; +} cryptState_t; + +void CryptState_init(cryptState_t *cs); +bool_t CryptState_isValid(cryptState_t *cs); +void CryptState_setKey(cryptState_t *cs, const unsigned char *rkey, const unsigned char *eiv, const unsigned char *div); +void CryptState_setDecryptIV(cryptState_t *cs, const unsigned char *iv); + +bool_t CryptState_decrypt(cryptState_t *cs, const unsigned char *source, unsigned char *dst, unsigned int crypted_length); +void CryptState_encrypt(cryptState_t *cs, const unsigned char *source, unsigned char *dst, unsigned int plain_length); + + +#endif |