hw/intc/armv7m_nvic: Provide default "reset the system" behaviour for SYSRESETREQ
[qemu.git] / include / crypto / xts.h
1 /*
2 * QEMU Crypto XTS cipher mode
3 *
4 * Copyright (c) 2015-2016 Red Hat, Inc.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 *
19 * This code is originally derived from public domain / WTFPL code in
20 * LibTomCrypt crytographic library http://libtom.org. The XTS code
21 * was donated by Elliptic Semiconductor Inc (www.ellipticsemi.com)
22 * to the LibTom Projects
23 *
24 */
25
26 #ifndef QCRYPTO_XTS_H
27 #define QCRYPTO_XTS_H
28
29
30 #define XTS_BLOCK_SIZE 16
31
32 typedef void xts_cipher_func(const void *ctx,
33 size_t length,
34 uint8_t *dst,
35 const uint8_t *src);
36
37 /**
38 * xts_decrypt:
39 * @datactx: the cipher context for data decryption
40 * @tweakctx: the cipher context for tweak decryption
41 * @encfunc: the cipher function for encryption
42 * @decfunc: the cipher function for decryption
43 * @iv: the initialization vector tweak of XTS_BLOCK_SIZE bytes
44 * @length: the length of @dst and @src
45 * @dst: buffer to hold the decrypted plaintext
46 * @src: buffer providing the ciphertext
47 *
48 * Decrypts @src into @dst
49 */
50 void xts_decrypt(const void *datactx,
51 const void *tweakctx,
52 xts_cipher_func *encfunc,
53 xts_cipher_func *decfunc,
54 uint8_t *iv,
55 size_t length,
56 uint8_t *dst,
57 const uint8_t *src);
58
59 /**
60 * xts_decrypt:
61 * @datactx: the cipher context for data encryption
62 * @tweakctx: the cipher context for tweak encryption
63 * @encfunc: the cipher function for encryption
64 * @decfunc: the cipher function for decryption
65 * @iv: the initialization vector tweak of XTS_BLOCK_SIZE bytes
66 * @length: the length of @dst and @src
67 * @dst: buffer to hold the encrypted ciphertext
68 * @src: buffer providing the plaintext
69 *
70 * Decrypts @src into @dst
71 */
72 void xts_encrypt(const void *datactx,
73 const void *tweakctx,
74 xts_cipher_func *encfunc,
75 xts_cipher_func *decfunc,
76 uint8_t *iv,
77 size_t length,
78 uint8_t *dst,
79 const uint8_t *src);
80
81
82 #endif /* QCRYPTO_XTS_H */