mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-27 21:40:49 +00:00
2a6a4076e1
Cleaned up with scripts/clean-header-guards.pl. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Richard Henderson <rth@twiddle.net>
86 lines
2.7 KiB
C
86 lines
2.7 KiB
C
/*
|
|
* QEMU Crypto XTS cipher mode
|
|
*
|
|
* Copyright (c) 2015-2016 Red Hat, Inc.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* This code is originally derived from public domain / WTFPL code in
|
|
* LibTomCrypt crytographic library http://libtom.org. The XTS code
|
|
* was donated by Elliptic Semiconductor Inc (www.ellipticsemi.com)
|
|
* to the LibTom Projects
|
|
*
|
|
*/
|
|
|
|
#ifndef QCRYPTO_XTS_H
|
|
#define QCRYPTO_XTS_H
|
|
|
|
#include "qemu-common.h"
|
|
#include "qapi/error.h"
|
|
|
|
|
|
#define XTS_BLOCK_SIZE 16
|
|
|
|
typedef void xts_cipher_func(const void *ctx,
|
|
size_t length,
|
|
uint8_t *dst,
|
|
const uint8_t *src);
|
|
|
|
/**
|
|
* xts_decrypt:
|
|
* @datactx: the cipher context for data decryption
|
|
* @tweakctx: the cipher context for tweak decryption
|
|
* @encfunc: the cipher function for encryption
|
|
* @decfunc: the cipher function for decryption
|
|
* @iv: the initialization vector tweak of XTS_BLOCK_SIZE bytes
|
|
* @length: the length of @dst and @src
|
|
* @dst: buffer to hold the decrypted plaintext
|
|
* @src: buffer providing the ciphertext
|
|
*
|
|
* Decrypts @src into @dst
|
|
*/
|
|
void xts_decrypt(const void *datactx,
|
|
const void *tweakctx,
|
|
xts_cipher_func *encfunc,
|
|
xts_cipher_func *decfunc,
|
|
uint8_t *iv,
|
|
size_t length,
|
|
uint8_t *dst,
|
|
const uint8_t *src);
|
|
|
|
/**
|
|
* xts_decrypt:
|
|
* @datactx: the cipher context for data encryption
|
|
* @tweakctx: the cipher context for tweak encryption
|
|
* @encfunc: the cipher function for encryption
|
|
* @decfunc: the cipher function for decryption
|
|
* @iv: the initialization vector tweak of XTS_BLOCK_SIZE bytes
|
|
* @length: the length of @dst and @src
|
|
* @dst: buffer to hold the encrypted ciphertext
|
|
* @src: buffer providing the plaintext
|
|
*
|
|
* Decrypts @src into @dst
|
|
*/
|
|
void xts_encrypt(const void *datactx,
|
|
const void *tweakctx,
|
|
xts_cipher_func *encfunc,
|
|
xts_cipher_func *decfunc,
|
|
uint8_t *iv,
|
|
size_t length,
|
|
uint8_t *dst,
|
|
const uint8_t *src);
|
|
|
|
|
|
#endif /* QCRYPTO_XTS_H */
|