]>
git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/blob - crypto/sha512_generic.c
1 /* SHA-512 code by Jean-Luc Cooke <jlcooke@certainkey.com>
3 * Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com>
4 * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
5 * Copyright (c) 2003 Kyle McMartin <kyle@debian.org>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2, or (at your option) any
13 #include <crypto/internal/hash.h>
14 #include <linux/kernel.h>
15 #include <linux/module.h>
17 #include <linux/init.h>
18 #include <linux/crypto.h>
19 #include <linux/types.h>
20 #include <crypto/sha.h>
21 #include <linux/percpu.h>
22 #include <asm/byteorder.h>
23 #include <asm/unaligned.h>
25 static inline u64
Ch(u64 x
, u64 y
, u64 z
)
27 return z
^ (x
& (y
^ z
));
30 static inline u64
Maj(u64 x
, u64 y
, u64 z
)
32 return (x
& y
) | (z
& (x
| y
));
35 static const u64 sha512_K
[80] = {
36 0x428a2f98d728ae22ULL
, 0x7137449123ef65cdULL
, 0xb5c0fbcfec4d3b2fULL
,
37 0xe9b5dba58189dbbcULL
, 0x3956c25bf348b538ULL
, 0x59f111f1b605d019ULL
,
38 0x923f82a4af194f9bULL
, 0xab1c5ed5da6d8118ULL
, 0xd807aa98a3030242ULL
,
39 0x12835b0145706fbeULL
, 0x243185be4ee4b28cULL
, 0x550c7dc3d5ffb4e2ULL
,
40 0x72be5d74f27b896fULL
, 0x80deb1fe3b1696b1ULL
, 0x9bdc06a725c71235ULL
,
41 0xc19bf174cf692694ULL
, 0xe49b69c19ef14ad2ULL
, 0xefbe4786384f25e3ULL
,
42 0x0fc19dc68b8cd5b5ULL
, 0x240ca1cc77ac9c65ULL
, 0x2de92c6f592b0275ULL
,
43 0x4a7484aa6ea6e483ULL
, 0x5cb0a9dcbd41fbd4ULL
, 0x76f988da831153b5ULL
,
44 0x983e5152ee66dfabULL
, 0xa831c66d2db43210ULL
, 0xb00327c898fb213fULL
,
45 0xbf597fc7beef0ee4ULL
, 0xc6e00bf33da88fc2ULL
, 0xd5a79147930aa725ULL
,
46 0x06ca6351e003826fULL
, 0x142929670a0e6e70ULL
, 0x27b70a8546d22ffcULL
,
47 0x2e1b21385c26c926ULL
, 0x4d2c6dfc5ac42aedULL
, 0x53380d139d95b3dfULL
,
48 0x650a73548baf63deULL
, 0x766a0abb3c77b2a8ULL
, 0x81c2c92e47edaee6ULL
,
49 0x92722c851482353bULL
, 0xa2bfe8a14cf10364ULL
, 0xa81a664bbc423001ULL
,
50 0xc24b8b70d0f89791ULL
, 0xc76c51a30654be30ULL
, 0xd192e819d6ef5218ULL
,
51 0xd69906245565a910ULL
, 0xf40e35855771202aULL
, 0x106aa07032bbd1b8ULL
,
52 0x19a4c116b8d2d0c8ULL
, 0x1e376c085141ab53ULL
, 0x2748774cdf8eeb99ULL
,
53 0x34b0bcb5e19b48a8ULL
, 0x391c0cb3c5c95a63ULL
, 0x4ed8aa4ae3418acbULL
,
54 0x5b9cca4f7763e373ULL
, 0x682e6ff3d6b2b8a3ULL
, 0x748f82ee5defb2fcULL
,
55 0x78a5636f43172f60ULL
, 0x84c87814a1f0ab72ULL
, 0x8cc702081a6439ecULL
,
56 0x90befffa23631e28ULL
, 0xa4506cebde82bde9ULL
, 0xbef9a3f7b2c67915ULL
,
57 0xc67178f2e372532bULL
, 0xca273eceea26619cULL
, 0xd186b8c721c0c207ULL
,
58 0xeada7dd6cde0eb1eULL
, 0xf57d4f7fee6ed178ULL
, 0x06f067aa72176fbaULL
,
59 0x0a637dc5a2c898a6ULL
, 0x113f9804bef90daeULL
, 0x1b710b35131c471bULL
,
60 0x28db77f523047d84ULL
, 0x32caab7b40c72493ULL
, 0x3c9ebe0a15c9bebcULL
,
61 0x431d67c49c100d4cULL
, 0x4cc5d4becb3e42b6ULL
, 0x597f299cfc657e2aULL
,
62 0x5fcb6fab3ad6faecULL
, 0x6c44198c4a475817ULL
,
65 #define e0(x) (ror64(x,28) ^ ror64(x,34) ^ ror64(x,39))
66 #define e1(x) (ror64(x,14) ^ ror64(x,18) ^ ror64(x,41))
67 #define s0(x) (ror64(x, 1) ^ ror64(x, 8) ^ (x >> 7))
68 #define s1(x) (ror64(x,19) ^ ror64(x,61) ^ (x >> 6))
70 static inline void LOAD_OP(int I
, u64
*W
, const u8
*input
)
72 W
[I
] = get_unaligned_be64((__u64
*)input
+ I
);
75 static inline void BLEND_OP(int I
, u64
*W
)
77 W
[I
& 15] += s1(W
[(I
-2) & 15]) + W
[(I
-7) & 15] + s0(W
[(I
-15) & 15]);
81 sha512_transform(u64
*state
, const u8
*input
)
83 u64 a
, b
, c
, d
, e
, f
, g
, h
, t1
, t2
;
88 /* load the state into our registers */
89 a
=state
[0]; b
=state
[1]; c
=state
[2]; d
=state
[3];
90 e
=state
[4]; f
=state
[5]; g
=state
[6]; h
=state
[7];
93 for (i
=0; i
<80; i
+=8) {
99 for (j
= 0; j
< 16; j
++)
100 LOAD_OP(i
+ j
, W
, input
);
102 for (j
= 0; j
< 16; j
++) {
108 t1
= h
+ e1(e
) + Ch(e
,f
,g
) + sha512_K
[i
] + W
[(i
& 15)];
109 t2
= e0(a
) + Maj(a
,b
,c
); d
+=t1
; h
=t1
+t2
;
110 t1
= g
+ e1(d
) + Ch(d
,e
,f
) + sha512_K
[i
+1] + W
[(i
& 15) + 1];
111 t2
= e0(h
) + Maj(h
,a
,b
); c
+=t1
; g
=t1
+t2
;
112 t1
= f
+ e1(c
) + Ch(c
,d
,e
) + sha512_K
[i
+2] + W
[(i
& 15) + 2];
113 t2
= e0(g
) + Maj(g
,h
,a
); b
+=t1
; f
=t1
+t2
;
114 t1
= e
+ e1(b
) + Ch(b
,c
,d
) + sha512_K
[i
+3] + W
[(i
& 15) + 3];
115 t2
= e0(f
) + Maj(f
,g
,h
); a
+=t1
; e
=t1
+t2
;
116 t1
= d
+ e1(a
) + Ch(a
,b
,c
) + sha512_K
[i
+4] + W
[(i
& 15) + 4];
117 t2
= e0(e
) + Maj(e
,f
,g
); h
+=t1
; d
=t1
+t2
;
118 t1
= c
+ e1(h
) + Ch(h
,a
,b
) + sha512_K
[i
+5] + W
[(i
& 15) + 5];
119 t2
= e0(d
) + Maj(d
,e
,f
); g
+=t1
; c
=t1
+t2
;
120 t1
= b
+ e1(g
) + Ch(g
,h
,a
) + sha512_K
[i
+6] + W
[(i
& 15) + 6];
121 t2
= e0(c
) + Maj(c
,d
,e
); f
+=t1
; b
=t1
+t2
;
122 t1
= a
+ e1(f
) + Ch(f
,g
,h
) + sha512_K
[i
+7] + W
[(i
& 15) + 7];
123 t2
= e0(b
) + Maj(b
,c
,d
); e
+=t1
; a
=t1
+t2
;
126 state
[0] += a
; state
[1] += b
; state
[2] += c
; state
[3] += d
;
127 state
[4] += e
; state
[5] += f
; state
[6] += g
; state
[7] += h
;
130 a
= b
= c
= d
= e
= f
= g
= h
= t1
= t2
= 0;
134 sha512_init(struct shash_desc
*desc
)
136 struct sha512_state
*sctx
= shash_desc_ctx(desc
);
137 sctx
->state
[0] = SHA512_H0
;
138 sctx
->state
[1] = SHA512_H1
;
139 sctx
->state
[2] = SHA512_H2
;
140 sctx
->state
[3] = SHA512_H3
;
141 sctx
->state
[4] = SHA512_H4
;
142 sctx
->state
[5] = SHA512_H5
;
143 sctx
->state
[6] = SHA512_H6
;
144 sctx
->state
[7] = SHA512_H7
;
145 sctx
->count
[0] = sctx
->count
[1] = 0;
151 sha384_init(struct shash_desc
*desc
)
153 struct sha512_state
*sctx
= shash_desc_ctx(desc
);
154 sctx
->state
[0] = SHA384_H0
;
155 sctx
->state
[1] = SHA384_H1
;
156 sctx
->state
[2] = SHA384_H2
;
157 sctx
->state
[3] = SHA384_H3
;
158 sctx
->state
[4] = SHA384_H4
;
159 sctx
->state
[5] = SHA384_H5
;
160 sctx
->state
[6] = SHA384_H6
;
161 sctx
->state
[7] = SHA384_H7
;
162 sctx
->count
[0] = sctx
->count
[1] = 0;
167 int crypto_sha512_update(struct shash_desc
*desc
, const u8
*data
,
170 struct sha512_state
*sctx
= shash_desc_ctx(desc
);
172 unsigned int i
, index
, part_len
;
174 /* Compute number of bytes mod 128 */
175 index
= sctx
->count
[0] & 0x7f;
177 /* Update number of bytes */
178 if ((sctx
->count
[0] += len
) < len
)
181 part_len
= 128 - index
;
183 /* Transform as many times as possible. */
184 if (len
>= part_len
) {
185 memcpy(&sctx
->buf
[index
], data
, part_len
);
186 sha512_transform(sctx
->state
, sctx
->buf
);
188 for (i
= part_len
; i
+ 127 < len
; i
+=128)
189 sha512_transform(sctx
->state
, &data
[i
]);
196 /* Buffer remaining input */
197 memcpy(&sctx
->buf
[index
], &data
[i
], len
- i
);
201 EXPORT_SYMBOL(crypto_sha512_update
);
204 sha512_final(struct shash_desc
*desc
, u8
*hash
)
206 struct sha512_state
*sctx
= shash_desc_ctx(desc
);
207 static u8 padding
[128] = { 0x80, };
208 __be64
*dst
= (__be64
*)hash
;
210 unsigned int index
, pad_len
;
213 /* Save number of bits */
214 bits
[1] = cpu_to_be64(sctx
->count
[0] << 3);
215 bits
[0] = cpu_to_be64(sctx
->count
[1] << 3 | sctx
->count
[0] >> 61);
217 /* Pad out to 112 mod 128. */
218 index
= sctx
->count
[0] & 0x7f;
219 pad_len
= (index
< 112) ? (112 - index
) : ((128+112) - index
);
220 crypto_sha512_update(desc
, padding
, pad_len
);
222 /* Append length (before padding) */
223 crypto_sha512_update(desc
, (const u8
*)bits
, sizeof(bits
));
225 /* Store state in digest */
226 for (i
= 0; i
< 8; i
++)
227 dst
[i
] = cpu_to_be64(sctx
->state
[i
]);
229 /* Zeroize sensitive information. */
230 memset(sctx
, 0, sizeof(struct sha512_state
));
235 static int sha384_final(struct shash_desc
*desc
, u8
*hash
)
239 sha512_final(desc
, D
);
247 static struct shash_alg sha512_algs
[2] = { {
248 .digestsize
= SHA512_DIGEST_SIZE
,
250 .update
= crypto_sha512_update
,
251 .final
= sha512_final
,
252 .descsize
= sizeof(struct sha512_state
),
254 .cra_name
= "sha512",
255 .cra_driver_name
= "sha512-generic",
256 .cra_flags
= CRYPTO_ALG_TYPE_SHASH
,
257 .cra_blocksize
= SHA512_BLOCK_SIZE
,
258 .cra_module
= THIS_MODULE
,
261 .digestsize
= SHA384_DIGEST_SIZE
,
263 .update
= crypto_sha512_update
,
264 .final
= sha384_final
,
265 .descsize
= sizeof(struct sha512_state
),
267 .cra_name
= "sha384",
268 .cra_driver_name
= "sha384-generic",
269 .cra_flags
= CRYPTO_ALG_TYPE_SHASH
,
270 .cra_blocksize
= SHA384_BLOCK_SIZE
,
271 .cra_module
= THIS_MODULE
,
275 static int __init
sha512_generic_mod_init(void)
277 return crypto_register_shashes(sha512_algs
, ARRAY_SIZE(sha512_algs
));
280 static void __exit
sha512_generic_mod_fini(void)
282 crypto_unregister_shashes(sha512_algs
, ARRAY_SIZE(sha512_algs
));
285 module_init(sha512_generic_mod_init
);
286 module_exit(sha512_generic_mod_fini
);
288 MODULE_LICENSE("GPL");
289 MODULE_DESCRIPTION("SHA-512 and SHA-384 Secure Hash Algorithms");
291 MODULE_ALIAS("sha384");
292 MODULE_ALIAS("sha512");