1 /* SPDX-License-Identifier: GPL-2.0-or-later * !! 1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* 2 /*
3 * AEGIS common definitions 3 * AEGIS common definitions
4 * 4 *
5 * Copyright (c) 2018 Ondrej Mosnacek <omosnac 5 * Copyright (c) 2018 Ondrej Mosnacek <omosnacek@gmail.com>
6 * Copyright (c) 2018 Red Hat, Inc. All rights 6 * Copyright (c) 2018 Red Hat, Inc. All rights reserved.
>> 7 *
>> 8 * This program is free software; you can redistribute it and/or modify it
>> 9 * under the terms of the GNU General Public License as published by the Free
>> 10 * Software Foundation; either version 2 of the License, or (at your option)
>> 11 * any later version.
7 */ 12 */
8 13
9 #ifndef _CRYPTO_AEGIS_H 14 #ifndef _CRYPTO_AEGIS_H
10 #define _CRYPTO_AEGIS_H 15 #define _CRYPTO_AEGIS_H
11 16
12 #include <crypto/aes.h> 17 #include <crypto/aes.h>
13 #include <linux/bitops.h> <<
14 #include <linux/types.h> 18 #include <linux/types.h>
15 19
16 #define AEGIS_BLOCK_SIZE 16 20 #define AEGIS_BLOCK_SIZE 16
17 21
18 union aegis_block { 22 union aegis_block {
19 __le64 words64[AEGIS_BLOCK_SIZE / size 23 __le64 words64[AEGIS_BLOCK_SIZE / sizeof(__le64)];
20 __le32 words32[AEGIS_BLOCK_SIZE / size 24 __le32 words32[AEGIS_BLOCK_SIZE / sizeof(__le32)];
21 u8 bytes[AEGIS_BLOCK_SIZE]; 25 u8 bytes[AEGIS_BLOCK_SIZE];
22 }; 26 };
23 27
24 struct aegis_state; <<
25 <<
26 extern int aegis128_have_aes_insn; <<
27 <<
28 #define AEGIS_BLOCK_ALIGN (__alignof__(union a 28 #define AEGIS_BLOCK_ALIGN (__alignof__(union aegis_block))
29 #define AEGIS_ALIGNED(p) IS_ALIGNED((uintptr_t 29 #define AEGIS_ALIGNED(p) IS_ALIGNED((uintptr_t)p, AEGIS_BLOCK_ALIGN)
30 30
31 bool crypto_aegis128_have_simd(void); !! 31 static const union aegis_block crypto_aegis_const[2] = {
32 void crypto_aegis128_update_simd(struct aegis_ !! 32 { .words64 = {
33 void crypto_aegis128_init_simd(struct aegis_st !! 33 cpu_to_le64(U64_C(0x0d08050302010100)),
34 const union aeg !! 34 cpu_to_le64(U64_C(0x6279e99059372215)),
35 const u8 *iv); !! 35 } },
36 void crypto_aegis128_encrypt_chunk_simd(struct !! 36 { .words64 = {
37 const !! 37 cpu_to_le64(U64_C(0xf12fc26d55183ddb)),
38 void crypto_aegis128_decrypt_chunk_simd(struct !! 38 cpu_to_le64(U64_C(0xdd28b57342311120)),
39 const !! 39 } },
40 int crypto_aegis128_final_simd(struct aegis_st !! 40 };
41 union aegis_blo <<
42 unsigned int as <<
43 unsigned int cr <<
44 unsigned int au <<
45 41
46 static __always_inline void crypto_aegis_block !! 42 static void crypto_aegis_block_xor(union aegis_block *dst,
47 !! 43 const union aegis_block *src)
48 { 44 {
49 dst->words64[0] ^= src->words64[0]; 45 dst->words64[0] ^= src->words64[0];
50 dst->words64[1] ^= src->words64[1]; 46 dst->words64[1] ^= src->words64[1];
51 } 47 }
52 48
53 static __always_inline void crypto_aegis_block !! 49 static void crypto_aegis_block_and(union aegis_block *dst,
54 !! 50 const union aegis_block *src)
55 { 51 {
56 dst->words64[0] &= src->words64[0]; 52 dst->words64[0] &= src->words64[0];
57 dst->words64[1] &= src->words64[1]; 53 dst->words64[1] &= src->words64[1];
58 } 54 }
59 55
60 static __always_inline void crypto_aegis_aesen !! 56 static void crypto_aegis_aesenc(union aegis_block *dst,
61 !! 57 const union aegis_block *src,
62 !! 58 const union aegis_block *key)
63 { 59 {
64 const u8 *s = src->bytes; 60 const u8 *s = src->bytes;
65 const u32 *t = crypto_ft_tab[0]; !! 61 const u32 *t0 = crypto_ft_tab[0];
>> 62 const u32 *t1 = crypto_ft_tab[1];
>> 63 const u32 *t2 = crypto_ft_tab[2];
>> 64 const u32 *t3 = crypto_ft_tab[3];
66 u32 d0, d1, d2, d3; 65 u32 d0, d1, d2, d3;
67 66
68 d0 = t[s[ 0]] ^ rol32(t[s[ 5]], 8) ^ r !! 67 d0 = t0[s[ 0]] ^ t1[s[ 5]] ^ t2[s[10]] ^ t3[s[15]];
69 d1 = t[s[ 4]] ^ rol32(t[s[ 9]], 8) ^ r !! 68 d1 = t0[s[ 4]] ^ t1[s[ 9]] ^ t2[s[14]] ^ t3[s[ 3]];
70 d2 = t[s[ 8]] ^ rol32(t[s[13]], 8) ^ r !! 69 d2 = t0[s[ 8]] ^ t1[s[13]] ^ t2[s[ 2]] ^ t3[s[ 7]];
71 d3 = t[s[12]] ^ rol32(t[s[ 1]], 8) ^ r !! 70 d3 = t0[s[12]] ^ t1[s[ 1]] ^ t2[s[ 6]] ^ t3[s[11]];
72 71
73 dst->words32[0] = cpu_to_le32(d0) ^ ke 72 dst->words32[0] = cpu_to_le32(d0) ^ key->words32[0];
74 dst->words32[1] = cpu_to_le32(d1) ^ ke 73 dst->words32[1] = cpu_to_le32(d1) ^ key->words32[1];
75 dst->words32[2] = cpu_to_le32(d2) ^ ke 74 dst->words32[2] = cpu_to_le32(d2) ^ key->words32[2];
76 dst->words32[3] = cpu_to_le32(d3) ^ ke 75 dst->words32[3] = cpu_to_le32(d3) ^ key->words32[3];
77 } 76 }
78 77
79 #endif /* _CRYPTO_AEGIS_H */ 78 #endif /* _CRYPTO_AEGIS_H */
80 79
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