Annotation of embedaddon/strongswan/src/libstrongswan/plugins/aesni/aesni_key.h, revision 1.1.1.1
1.1 misho 1: /*
2: * Copyright (C) 2015 Martin Willi
3: * Copyright (C) 2015 revosec AG
4: *
5: * This program is free software; you can redistribute it and/or modify it
6: * under the terms of the GNU General Public License as published by the
7: * Free Software Foundation; either version 2 of the License, or (at your
8: * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
9: *
10: * This program is distributed in the hope that it will be useful, but
11: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13: * for more details.
14: */
15:
16: /**
17: * @defgroup aesni_key aesni_key
18: * @{ @ingroup aesni
19: */
20:
21: #ifndef AESNI_KEY_H_
22: #define AESNI_KEY_H_
23:
24: #include <library.h>
25:
26: #include <wmmintrin.h>
27:
28: /**
29: * AES block size, in bytes
30: */
31: #define AES_BLOCK_SIZE 16
32:
33: typedef struct aesni_key_t aesni_key_t;
34:
35: /**
36: * Key schedule for encryption/decryption using on AES-NI.
37: */
38: struct aesni_key_t {
39:
40: /**
41: * Destroy a aesni_key_t.
42: */
43: void (*destroy)(aesni_key_t *this);
44:
45: /**
46: * Number of AES rounds (10, 12, 14)
47: */
48: int rounds;
49:
50: /**
51: * Key schedule, for each round + the round 0 (whitening)
52: */
53: __attribute__((aligned(sizeof(__m128i)))) __m128i schedule[];
54: };
55:
56: /**
57: * Create a AESNI key schedule instance.
58: *
59: * @param encrypt TRUE for encryption schedule, FALSE for decryption
60: * @param key non-expanded crypto key, 16, 24 or 32 bytes
61: * @return key schedule, NULL on invalid key size
62: */
63: aesni_key_t *aesni_key_create(bool encrypt, chunk_t key);
64:
65: #endif /** AESNI_KEY_H_ @}*/
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