1 /* SPDX-License-Identifier: GPL-2.0-or-later * 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
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 */ 7 */
8 8
9 #ifndef _CRYPTO_AEGIS_H 9 #ifndef _CRYPTO_AEGIS_H
10 #define _CRYPTO_AEGIS_H 10 #define _CRYPTO_AEGIS_H
11 11
12 #include <crypto/aes.h> 12 #include <crypto/aes.h>
13 #include <linux/bitops.h> 13 #include <linux/bitops.h>
14 #include <linux/types.h> 14 #include <linux/types.h>
15 15
16 #define AEGIS_BLOCK_SIZE 16 16 #define AEGIS_BLOCK_SIZE 16
17 17
18 union aegis_block { 18 union aegis_block {
19 __le64 words64[AEGIS_BLOCK_SIZE / size 19 __le64 words64[AEGIS_BLOCK_SIZE / sizeof(__le64)];
20 __le32 words32[AEGIS_BLOCK_SIZE / size 20 __le32 words32[AEGIS_BLOCK_SIZE / sizeof(__le32)];
21 u8 bytes[AEGIS_BLOCK_SIZE]; 21 u8 bytes[AEGIS_BLOCK_SIZE];
22 }; 22 };
23 23
24 struct aegis_state; <<
25 <<
26 extern int aegis128_have_aes_insn; <<
27 <<
28 #define AEGIS_BLOCK_ALIGN (__alignof__(union a 24 #define AEGIS_BLOCK_ALIGN (__alignof__(union aegis_block))
29 #define AEGIS_ALIGNED(p) IS_ALIGNED((uintptr_t 25 #define AEGIS_ALIGNED(p) IS_ALIGNED((uintptr_t)p, AEGIS_BLOCK_ALIGN)
30 <<
31 bool crypto_aegis128_have_simd(void); <<
32 void crypto_aegis128_update_simd(struct aegis_ <<
33 void crypto_aegis128_init_simd(struct aegis_st <<
34 const union aeg <<
35 const u8 *iv); <<
36 void crypto_aegis128_encrypt_chunk_simd(struct <<
37 const <<
38 void crypto_aegis128_decrypt_chunk_simd(struct <<
39 const <<
40 int crypto_aegis128_final_simd(struct aegis_st <<
41 union aegis_blo <<
42 unsigned int as <<
43 unsigned int cr <<
44 unsigned int au <<
45 26
46 static __always_inline void crypto_aegis_block 27 static __always_inline void crypto_aegis_block_xor(union aegis_block *dst,
47 28 const union aegis_block *src)
48 { 29 {
49 dst->words64[0] ^= src->words64[0]; 30 dst->words64[0] ^= src->words64[0];
50 dst->words64[1] ^= src->words64[1]; 31 dst->words64[1] ^= src->words64[1];
51 } 32 }
52 33
53 static __always_inline void crypto_aegis_block 34 static __always_inline void crypto_aegis_block_and(union aegis_block *dst,
54 35 const union aegis_block *src)
55 { 36 {
56 dst->words64[0] &= src->words64[0]; 37 dst->words64[0] &= src->words64[0];
57 dst->words64[1] &= src->words64[1]; 38 dst->words64[1] &= src->words64[1];
58 } 39 }
59 40
60 static __always_inline void crypto_aegis_aesen 41 static __always_inline void crypto_aegis_aesenc(union aegis_block *dst,
61 42 const union aegis_block *src,
62 43 const union aegis_block *key)
63 { 44 {
64 const u8 *s = src->bytes; 45 const u8 *s = src->bytes;
65 const u32 *t = crypto_ft_tab[0]; 46 const u32 *t = crypto_ft_tab[0];
66 u32 d0, d1, d2, d3; 47 u32 d0, d1, d2, d3;
67 48
68 d0 = t[s[ 0]] ^ rol32(t[s[ 5]], 8) ^ r 49 d0 = t[s[ 0]] ^ rol32(t[s[ 5]], 8) ^ rol32(t[s[10]], 16) ^ rol32(t[s[15]], 24);
69 d1 = t[s[ 4]] ^ rol32(t[s[ 9]], 8) ^ r 50 d1 = t[s[ 4]] ^ rol32(t[s[ 9]], 8) ^ rol32(t[s[14]], 16) ^ rol32(t[s[ 3]], 24);
70 d2 = t[s[ 8]] ^ rol32(t[s[13]], 8) ^ r 51 d2 = t[s[ 8]] ^ rol32(t[s[13]], 8) ^ rol32(t[s[ 2]], 16) ^ rol32(t[s[ 7]], 24);
71 d3 = t[s[12]] ^ rol32(t[s[ 1]], 8) ^ r 52 d3 = t[s[12]] ^ rol32(t[s[ 1]], 8) ^ rol32(t[s[ 6]], 16) ^ rol32(t[s[11]], 24);
72 53
73 dst->words32[0] = cpu_to_le32(d0) ^ ke 54 dst->words32[0] = cpu_to_le32(d0) ^ key->words32[0];
74 dst->words32[1] = cpu_to_le32(d1) ^ ke 55 dst->words32[1] = cpu_to_le32(d1) ^ key->words32[1];
75 dst->words32[2] = cpu_to_le32(d2) ^ ke 56 dst->words32[2] = cpu_to_le32(d2) ^ key->words32[2];
76 dst->words32[3] = cpu_to_le32(d3) ^ ke 57 dst->words32[3] = cpu_to_le32(d3) ^ key->words32[3];
77 } 58 }
78 59
79 #endif /* _CRYPTO_AEGIS_H */ 60 #endif /* _CRYPTO_AEGIS_H */
80 61
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