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>
30 static DEFINE_PER_CPU(u64
[80], msg_schedule
);
32 static inline u64
Ch(u64 x
, u64 y
, u64 z
)
34 return z
^ (x
& (y
^ z
));
37 static inline u64
Maj(u64 x
, u64 y
, u64 z
)
39 return (x
& y
) | (z
& (x
| y
));
42 static inline u64
RORu64(u64 x
, u64 y
)
44 return (x
>> y
) | (x
<< (64 - y
));
47 static const u64 sha512_K
[80] = {
48 0x428a2f98d728ae22ULL
, 0x7137449123ef65cdULL
, 0xb5c0fbcfec4d3b2fULL
,
49 0xe9b5dba58189dbbcULL
, 0x3956c25bf348b538ULL
, 0x59f111f1b605d019ULL
,
50 0x923f82a4af194f9bULL
, 0xab1c5ed5da6d8118ULL
, 0xd807aa98a3030242ULL
,
51 0x12835b0145706fbeULL
, 0x243185be4ee4b28cULL
, 0x550c7dc3d5ffb4e2ULL
,
52 0x72be5d74f27b896fULL
, 0x80deb1fe3b1696b1ULL
, 0x9bdc06a725c71235ULL
,
53 0xc19bf174cf692694ULL
, 0xe49b69c19ef14ad2ULL
, 0xefbe4786384f25e3ULL
,
54 0x0fc19dc68b8cd5b5ULL
, 0x240ca1cc77ac9c65ULL
, 0x2de92c6f592b0275ULL
,
55 0x4a7484aa6ea6e483ULL
, 0x5cb0a9dcbd41fbd4ULL
, 0x76f988da831153b5ULL
,
56 0x983e5152ee66dfabULL
, 0xa831c66d2db43210ULL
, 0xb00327c898fb213fULL
,
57 0xbf597fc7beef0ee4ULL
, 0xc6e00bf33da88fc2ULL
, 0xd5a79147930aa725ULL
,
58 0x06ca6351e003826fULL
, 0x142929670a0e6e70ULL
, 0x27b70a8546d22ffcULL
,
59 0x2e1b21385c26c926ULL
, 0x4d2c6dfc5ac42aedULL
, 0x53380d139d95b3dfULL
,
60 0x650a73548baf63deULL
, 0x766a0abb3c77b2a8ULL
, 0x81c2c92e47edaee6ULL
,
61 0x92722c851482353bULL
, 0xa2bfe8a14cf10364ULL
, 0xa81a664bbc423001ULL
,
62 0xc24b8b70d0f89791ULL
, 0xc76c51a30654be30ULL
, 0xd192e819d6ef5218ULL
,
63 0xd69906245565a910ULL
, 0xf40e35855771202aULL
, 0x106aa07032bbd1b8ULL
,
64 0x19a4c116b8d2d0c8ULL
, 0x1e376c085141ab53ULL
, 0x2748774cdf8eeb99ULL
,
65 0x34b0bcb5e19b48a8ULL
, 0x391c0cb3c5c95a63ULL
, 0x4ed8aa4ae3418acbULL
,
66 0x5b9cca4f7763e373ULL
, 0x682e6ff3d6b2b8a3ULL
, 0x748f82ee5defb2fcULL
,
67 0x78a5636f43172f60ULL
, 0x84c87814a1f0ab72ULL
, 0x8cc702081a6439ecULL
,
68 0x90befffa23631e28ULL
, 0xa4506cebde82bde9ULL
, 0xbef9a3f7b2c67915ULL
,
69 0xc67178f2e372532bULL
, 0xca273eceea26619cULL
, 0xd186b8c721c0c207ULL
,
70 0xeada7dd6cde0eb1eULL
, 0xf57d4f7fee6ed178ULL
, 0x06f067aa72176fbaULL
,
71 0x0a637dc5a2c898a6ULL
, 0x113f9804bef90daeULL
, 0x1b710b35131c471bULL
,
72 0x28db77f523047d84ULL
, 0x32caab7b40c72493ULL
, 0x3c9ebe0a15c9bebcULL
,
73 0x431d67c49c100d4cULL
, 0x4cc5d4becb3e42b6ULL
, 0x597f299cfc657e2aULL
,
74 0x5fcb6fab3ad6faecULL
, 0x6c44198c4a475817ULL
,
77 #define e0(x) (RORu64(x,28) ^ RORu64(x,34) ^ RORu64(x,39))
78 #define e1(x) (RORu64(x,14) ^ RORu64(x,18) ^ RORu64(x,41))
79 #define s0(x) (RORu64(x, 1) ^ RORu64(x, 8) ^ (x >> 7))
80 #define s1(x) (RORu64(x,19) ^ RORu64(x,61) ^ (x >> 6))
82 static inline void LOAD_OP(int I
, u64
*W
, const u8
*input
)
84 W
[I
] = __be64_to_cpu( ((__be64
*)(input
))[I
] );
87 static inline void BLEND_OP(int I
, u64
*W
)
89 W
[I
] = s1(W
[I
-2]) + W
[I
-7] + s0(W
[I
-15]) + W
[I
-16];
93 sha512_transform(u64
*state
, const u8
*input
)
95 u64 a
, b
, c
, d
, e
, f
, g
, h
, t1
, t2
;
98 u64
*W
= get_cpu_var(msg_schedule
);
101 for (i
= 0; i
< 16; i
++)
102 LOAD_OP(i
, W
, input
);
104 for (i
= 16; i
< 80; i
++) {
108 /* load the state into our registers */
109 a
=state
[0]; b
=state
[1]; c
=state
[2]; d
=state
[3];
110 e
=state
[4]; f
=state
[5]; g
=state
[6]; h
=state
[7];
113 for (i
=0; i
<80; i
+=8) {
114 t1
= h
+ e1(e
) + Ch(e
,f
,g
) + sha512_K
[i
] + W
[i
];
115 t2
= e0(a
) + Maj(a
,b
,c
); d
+=t1
; h
=t1
+t2
;
116 t1
= g
+ e1(d
) + Ch(d
,e
,f
) + sha512_K
[i
+1] + W
[i
+1];
117 t2
= e0(h
) + Maj(h
,a
,b
); c
+=t1
; g
=t1
+t2
;
118 t1
= f
+ e1(c
) + Ch(c
,d
,e
) + sha512_K
[i
+2] + W
[i
+2];
119 t2
= e0(g
) + Maj(g
,h
,a
); b
+=t1
; f
=t1
+t2
;
120 t1
= e
+ e1(b
) + Ch(b
,c
,d
) + sha512_K
[i
+3] + W
[i
+3];
121 t2
= e0(f
) + Maj(f
,g
,h
); a
+=t1
; e
=t1
+t2
;
122 t1
= d
+ e1(a
) + Ch(a
,b
,c
) + sha512_K
[i
+4] + W
[i
+4];
123 t2
= e0(e
) + Maj(e
,f
,g
); h
+=t1
; d
=t1
+t2
;
124 t1
= c
+ e1(h
) + Ch(h
,a
,b
) + sha512_K
[i
+5] + W
[i
+5];
125 t2
= e0(d
) + Maj(d
,e
,f
); g
+=t1
; c
=t1
+t2
;
126 t1
= b
+ e1(g
) + Ch(g
,h
,a
) + sha512_K
[i
+6] + W
[i
+6];
127 t2
= e0(c
) + Maj(c
,d
,e
); f
+=t1
; b
=t1
+t2
;
128 t1
= a
+ e1(f
) + Ch(f
,g
,h
) + sha512_K
[i
+7] + W
[i
+7];
129 t2
= e0(b
) + Maj(b
,c
,d
); e
+=t1
; a
=t1
+t2
;
132 state
[0] += a
; state
[1] += b
; state
[2] += c
; state
[3] += d
;
133 state
[4] += e
; state
[5] += f
; state
[6] += g
; state
[7] += h
;
136 a
= b
= c
= d
= e
= f
= g
= h
= t1
= t2
= 0;
137 memset(W
, 0, sizeof(__get_cpu_var(msg_schedule
)));
138 put_cpu_var(msg_schedule
);
142 sha512_init(struct shash_desc
*desc
)
144 struct sha512_ctx
*sctx
= shash_desc_ctx(desc
);
145 sctx
->state
[0] = SHA512_H0
;
146 sctx
->state
[1] = SHA512_H1
;
147 sctx
->state
[2] = SHA512_H2
;
148 sctx
->state
[3] = SHA512_H3
;
149 sctx
->state
[4] = SHA512_H4
;
150 sctx
->state
[5] = SHA512_H5
;
151 sctx
->state
[6] = SHA512_H6
;
152 sctx
->state
[7] = SHA512_H7
;
153 sctx
->count
[0] = sctx
->count
[1] = sctx
->count
[2] = sctx
->count
[3] = 0;
159 sha384_init(struct shash_desc
*desc
)
161 struct sha512_ctx
*sctx
= shash_desc_ctx(desc
);
162 sctx
->state
[0] = SHA384_H0
;
163 sctx
->state
[1] = SHA384_H1
;
164 sctx
->state
[2] = SHA384_H2
;
165 sctx
->state
[3] = SHA384_H3
;
166 sctx
->state
[4] = SHA384_H4
;
167 sctx
->state
[5] = SHA384_H5
;
168 sctx
->state
[6] = SHA384_H6
;
169 sctx
->state
[7] = SHA384_H7
;
170 sctx
->count
[0] = sctx
->count
[1] = sctx
->count
[2] = sctx
->count
[3] = 0;
176 sha512_update(struct shash_desc
*desc
, const u8
*data
, unsigned int len
)
178 struct sha512_ctx
*sctx
= shash_desc_ctx(desc
);
180 unsigned int i
, index
, part_len
;
182 /* Compute number of bytes mod 128 */
183 index
= (unsigned int)((sctx
->count
[0] >> 3) & 0x7F);
185 /* Update number of bits */
186 if ((sctx
->count
[0] += (len
<< 3)) < (len
<< 3)) {
187 if ((sctx
->count
[1] += 1) < 1)
188 if ((sctx
->count
[2] += 1) < 1)
190 sctx
->count
[1] += (len
>> 29);
193 part_len
= 128 - index
;
195 /* Transform as many times as possible. */
196 if (len
>= part_len
) {
197 memcpy(&sctx
->buf
[index
], data
, part_len
);
198 sha512_transform(sctx
->state
, sctx
->buf
);
200 for (i
= part_len
; i
+ 127 < len
; i
+=128)
201 sha512_transform(sctx
->state
, &data
[i
]);
208 /* Buffer remaining input */
209 memcpy(&sctx
->buf
[index
], &data
[i
], len
- i
);
215 sha512_final(struct shash_desc
*desc
, u8
*hash
)
217 struct sha512_ctx
*sctx
= shash_desc_ctx(desc
);
218 static u8 padding
[128] = { 0x80, };
219 __be64
*dst
= (__be64
*)hash
;
221 unsigned int index
, pad_len
;
224 /* Save number of bits */
225 bits
[3] = cpu_to_be32(sctx
->count
[0]);
226 bits
[2] = cpu_to_be32(sctx
->count
[1]);
227 bits
[1] = cpu_to_be32(sctx
->count
[2]);
228 bits
[0] = cpu_to_be32(sctx
->count
[3]);
230 /* Pad out to 112 mod 128. */
231 index
= (sctx
->count
[0] >> 3) & 0x7f;
232 pad_len
= (index
< 112) ? (112 - index
) : ((128+112) - index
);
233 sha512_update(desc
, padding
, pad_len
);
235 /* Append length (before padding) */
236 sha512_update(desc
, (const u8
*)bits
, sizeof(bits
));
238 /* Store state in digest */
239 for (i
= 0; i
< 8; i
++)
240 dst
[i
] = cpu_to_be64(sctx
->state
[i
]);
242 /* Zeroize sensitive information. */
243 memset(sctx
, 0, sizeof(struct sha512_ctx
));
248 static int sha384_final(struct shash_desc
*desc
, u8
*hash
)
252 sha512_final(desc
, D
);
260 static struct shash_alg sha512
= {
261 .digestsize
= SHA512_DIGEST_SIZE
,
263 .update
= sha512_update
,
264 .final
= sha512_final
,
265 .descsize
= sizeof(struct sha512_ctx
),
267 .cra_name
= "sha512",
268 .cra_flags
= CRYPTO_ALG_TYPE_SHASH
,
269 .cra_blocksize
= SHA512_BLOCK_SIZE
,
270 .cra_module
= THIS_MODULE
,
274 static struct shash_alg sha384
= {
275 .digestsize
= SHA384_DIGEST_SIZE
,
277 .update
= sha512_update
,
278 .final
= sha384_final
,
279 .descsize
= sizeof(struct sha512_ctx
),
281 .cra_name
= "sha384",
282 .cra_flags
= CRYPTO_ALG_TYPE_SHASH
,
283 .cra_blocksize
= SHA384_BLOCK_SIZE
,
284 .cra_module
= THIS_MODULE
,
288 static int __init
sha512_generic_mod_init(void)
292 if ((ret
= crypto_register_shash(&sha384
)) < 0)
294 if ((ret
= crypto_register_shash(&sha512
)) < 0)
295 crypto_unregister_shash(&sha384
);
300 static void __exit
sha512_generic_mod_fini(void)
302 crypto_unregister_shash(&sha384
);
303 crypto_unregister_shash(&sha512
);
306 module_init(sha512_generic_mod_init
);
307 module_exit(sha512_generic_mod_fini
);
309 MODULE_LICENSE("GPL");
310 MODULE_DESCRIPTION("SHA-512 and SHA-384 Secure Hash Algorithms");
312 MODULE_ALIAS("sha384");
313 MODULE_ALIAS("sha512");
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