1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
/*
* aes_icm.h
*
* Header for AES Integer Counter Mode.
*
* David A. McGrew
* Cisco Systems, Inc.
*
*/
/*
*
* Copyright (c) 2001-2006, Cisco Systems, Inc.
* 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 Cisco Systems, Inc. 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
* COPYRIGHT HOLDERS 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 AES_ICM_H
#define AES_ICM_H
#include "aes.h"
#include "cipher.h"
typedef struct {
v128_t counter; /* holds the counter value */
v128_t offset; /* initial offset value */
v128_t keystream_buffer; /* buffers bytes of keystream */
aes_expanded_key_t expanded_key; /* the cipher key */
int bytes_in_buffer; /* number of unused bytes in buffer */
} aes_icm_ctx_t;
err_status_t
aes_icm_context_init(aes_icm_ctx_t *c,
const unsigned char *key,
int key_len);
err_status_t
aes_icm_set_iv(aes_icm_ctx_t *c, void *iv, int direction);
err_status_t
aes_icm_encrypt(aes_icm_ctx_t *c,
unsigned char *buf, unsigned int *bytes_to_encr);
err_status_t
aes_icm_output(aes_icm_ctx_t *c,
unsigned char *buf, unsigned int bytes_to_output);
err_status_t
aes_icm_dealloc(cipher_t *c);
err_status_t
aes_icm_encrypt_ismacryp(aes_icm_ctx_t *c,
unsigned char *buf,
unsigned int *enc_len,
int forIsmacryp);
err_status_t
aes_icm_alloc_ismacryp(cipher_t **c,
int key_len,
int forIsmacryp);
uint16_t
aes_icm_bytes_encrypted(aes_icm_ctx_t *c);
#endif /* AES_ICM_H */
|
