1 /*******************************************************************************
2 Copyright (c) 2019-2020, Intel Corporation
3
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5 modification, are permitted provided that the following conditions are met:
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7 * Redistributions of source code must retain the above copyright notice,
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9 * Redistributions in binary form must reproduce the above copyright
10 notice, this list of conditions and the following disclaimer in the
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12 * Neither the name of Intel Corporation nor the names of its contributors
13 may be used to endorse or promote products derived from this software
14 without specific prior written permission.
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17 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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26 *******************************************************************************/
27
28 #include <string.h>
29
30 #include "intel-ipsec-mb.h"
31 #include "include/wireless_common.h"
32
33 int
kasumi_f8_iv_gen(const uint32_t count,const uint8_t bearer,const uint8_t dir,void * iv_ptr)34 kasumi_f8_iv_gen(const uint32_t count, const uint8_t bearer,
35 const uint8_t dir, void *iv_ptr)
36 {
37 uint8_t *iv = (uint8_t *) iv_ptr;
38 uint32_t *iv32 = (uint32_t *) iv_ptr;
39
40 if (iv_ptr == NULL)
41 return -1;
42
43 /* Bearer must contain 5 bits only */
44 if (bearer >= (1<<5))
45 return -1;
46
47 /* Direction must contain 1 bit only */
48 if (dir > 1)
49 return -1;
50
51 /* IV[0-3] = COUNT */
52 iv32[0] = bswap4(count);
53
54 /* IV[4] = BEARER || DIRECTION || 0s */
55 iv[4] = (bearer << 3) + (dir << 2);
56
57 /* IV[5-7] = Os */
58 memset(&iv[5], 0, 3);
59
60 return 0;
61 }
62
63 int
kasumi_f9_iv_gen(const uint32_t count,const uint32_t fresh,void * iv_ptr)64 kasumi_f9_iv_gen(const uint32_t count, const uint32_t fresh,
65 void *iv_ptr)
66 {
67 uint32_t *iv32 = (uint32_t *) iv_ptr;
68
69 if (iv_ptr == NULL)
70 return -1;
71
72 /* IV[0-3] = COUNT */
73 iv32[0] = bswap4(count);
74
75 /* IV[4-7] = FRESH */
76 iv32[1] = bswap4(fresh);
77
78 return 0;
79 }
80