Release 4.7 crypto/sha512_generic.c
/* SHA-512 code by Jean-Luc Cooke <jlcooke@certainkey.com>
*
* Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com>
* Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
* Copyright (c) 2003 Kyle McMartin <kyle@debian.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
*/
#include <crypto/internal/hash.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/crypto.h>
#include <linux/types.h>
#include <crypto/sha.h>
#include <crypto/sha512_base.h>
#include <linux/percpu.h>
#include <asm/byteorder.h>
#include <asm/unaligned.h>
static inline u64 Ch(u64 x, u64 y, u64 z)
{
return z ^ (x & (y ^ z));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| james morris | james morris | 26 | 89.66% | 1 | 50.00% |
| jean-luc cooke | jean-luc cooke | 3 | 10.34% | 1 | 50.00% |
| Total | 29 | 100.00% | 2 | 100.00% |
static inline u64 Maj(u64 x, u64 y, u64 z)
{
return (x & y) | (z & (x | y));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| james morris | james morris | 29 | 87.88% | 1 | 50.00% |
| jean-luc cooke | jean-luc cooke | 4 | 12.12% | 1 | 50.00% |
| Total | 33 | 100.00% | 2 | 100.00% |
static const u64 sha512_K[80] = {
0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 0xb5c0fbcfec4d3b2fULL,
0xe9b5dba58189dbbcULL, 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, 0xd807aa98a3030242ULL,
0x12835b0145706fbeULL, 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 0x9bdc06a725c71235ULL,
0xc19bf174cf692694ULL, 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, 0x2de92c6f592b0275ULL,
0x4a7484aa6ea6e483ULL, 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 0xb00327c898fb213fULL,
0xbf597fc7beef0ee4ULL, 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, 0x27b70a8546d22ffcULL,
0x2e1b21385c26c926ULL, 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 0x81c2c92e47edaee6ULL,
0x92722c851482353bULL, 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, 0xd192e819d6ef5218ULL,
0xd69906245565a910ULL, 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 0x2748774cdf8eeb99ULL,
0x34b0bcb5e19b48a8ULL, 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, 0x748f82ee5defb2fcULL,
0x78a5636f43172f60ULL, 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 0xbef9a3f7b2c67915ULL,
0xc67178f2e372532bULL, 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, 0x06f067aa72176fbaULL,
0x0a637dc5a2c898a6ULL, 0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 0x3c9ebe0a15c9bebcULL,
0x431d67c49c100d4cULL, 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL,
};
#define e0(x) (ror64(x,28) ^ ror64(x,34) ^ ror64(x,39))
#define e1(x) (ror64(x,14) ^ ror64(x,18) ^ ror64(x,41))
#define s0(x) (ror64(x, 1) ^ ror64(x, 8) ^ (x >> 7))
#define s1(x) (ror64(x,19) ^ ror64(x,61) ^ (x >> 6))
static inline void LOAD_OP(int I, u64 *W, const u8 *input)
{
W[I] = get_unaligned_be64((__u64 *)input + I);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| james morris | james morris | 28 | 80.00% | 1 | 33.33% |
| andrew morton | andrew morton | 4 | 11.43% | 1 | 33.33% |
| david s. miller | david s. miller | 3 | 8.57% | 1 | 33.33% |
| Total | 35 | 100.00% | 3 | 100.00% |
static inline void BLEND_OP(int I, u64 *W)
{
W[I & 15] += s1(W[(I-2) & 15]) + W[(I-7) & 15] + s0(W[(I-15) & 15]);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| james morris | james morris | 44 | 73.33% | 1 | 33.33% |
| alexey dobriyan | alexey dobriyan | 8 | 13.33% | 1 | 33.33% |
| herbert xu | herbert xu | 8 | 13.33% | 1 | 33.33% |
| Total | 60 | 100.00% | 3 | 100.00% |
static void
sha512_transform(u64 *state, const u8 *input)
{
u64 a, b, c, d, e, f, g, h, t1, t2;
int i;
u64 W[16];
/* load the state into our registers */
a=state[0]; b=state[1]; c=state[2]; d=state[3];
e=state[4]; f=state[5]; g=state[6]; h=state[7];
/* now iterate */
for (i=0; i<80; i+=8) {
if (!(i & 8)) {
int j;
if (i < 16) {
/* load the input */
for (j = 0; j < 16; j++)
LOAD_OP(i + j, W, input);
} else {
for (j = 0; j < 16; j++) {
BLEND_OP(i + j, W);
}
}
}
t1 = h + e1(e) + Ch(e,f,g) + sha512_K[i ] + W[(i & 15)];
t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
t1 = g + e1(d) + Ch(d,e,f) + sha512_K[i+1] + W[(i & 15) + 1];
t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
t1 = f + e1(c) + Ch(c,d,e) + sha512_K[i+2] + W[(i & 15) + 2];
t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
t1 = e + e1(b) + Ch(b,c,d) + sha512_K[i+3] + W[(i & 15) + 3];
t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
t1 = d + e1(a) + Ch(a,b,c) + sha512_K[i+4] + W[(i & 15) + 4];
t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
t1 = c + e1(h) + Ch(h,a,b) + sha512_K[i+5] + W[(i & 15) + 5];
t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
t1 = b + e1(g) + Ch(g,h,a) + sha512_K[i+6] + W[(i & 15) + 6];
t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
t1 = a + e1(f) + Ch(f,g,h) + sha512_K[i+7] + W[(i & 15) + 7];
t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
}
state[0] += a; state[1] += b; state[2] += c; state[3] += d;
state[4] += e; state[5] += f; state[6] += g; state[7] += h;
/* erase our data */
a = b = c = d = e = f = g = h = t1 = t2 = 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| herbert xu | herbert xu | 421 | 55.10% | 1 | 20.00% |
| james morris | james morris | 263 | 34.42% | 1 | 20.00% |
| alexey dobriyan | alexey dobriyan | 77 | 10.08% | 2 | 40.00% |
| adrian-ken rueegsegger | adrian-ken rueegsegger | 3 | 0.39% | 1 | 20.00% |
| Total | 764 | 100.00% | 5 | 100.00% |
static void sha512_generic_block_fn(struct sha512_state *sst, u8 const *src,
int blocks)
{
while (blocks--) {
sha512_transform(sst->state, src);
src += SHA512_BLOCK_SIZE;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ard biesheuvel | ard biesheuvel | 25 | 64.10% | 1 | 25.00% |
| james morris | james morris | 11 | 28.21% | 1 | 25.00% |
| herbert xu | herbert xu | 3 | 7.69% | 2 | 50.00% |
| Total | 39 | 100.00% | 4 | 100.00% |
int crypto_sha512_update(struct shash_desc *desc, const u8 *data,
unsigned int len)
{
return sha512_base_do_update(desc, data, len, sha512_generic_block_fn);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| james morris | james morris | 20 | 64.52% | 1 | 20.00% |
| adrian-ken rueegsegger | adrian-ken rueegsegger | 5 | 16.13% | 1 | 20.00% |
| ard biesheuvel | ard biesheuvel | 3 | 9.68% | 1 | 20.00% |
| herbert xu | herbert xu | 2 | 6.45% | 1 | 20.00% |
| tim chen | tim chen | 1 | 3.23% | 1 | 20.00% |
| Total | 31 | 100.00% | 5 | 100.00% |
EXPORT_SYMBOL(crypto_sha512_update);
static int sha512_final(struct shash_desc *desc, u8 *hash)
{
sha512_base_do_finalize(desc, sha512_generic_block_fn);
return sha512_base_finish(desc, hash);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| james morris | james morris | 17 | 56.67% | 1 | 25.00% |
| adrian-ken rueegsegger | adrian-ken rueegsegger | 6 | 20.00% | 1 | 25.00% |
| ard biesheuvel | ard biesheuvel | 5 | 16.67% | 1 | 25.00% |
| herbert xu | herbert xu | 2 | 6.67% | 1 | 25.00% |
| Total | 30 | 100.00% | 4 | 100.00% |
int crypto_sha512_finup(struct shash_desc *desc, const u8 *data,
unsigned int len, u8 *hash)
{
sha512_base_do_update(desc, data, len, sha512_generic_block_fn);
return sha512_final(desc, hash);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| james morris | james morris | 18 | 42.86% | 1 | 25.00% |
| ard biesheuvel | ard biesheuvel | 18 | 42.86% | 1 | 25.00% |
| adrian-ken rueegsegger | adrian-ken rueegsegger | 5 | 11.90% | 1 | 25.00% |
| herbert xu | herbert xu | 1 | 2.38% | 1 | 25.00% |
| Total | 42 | 100.00% | 4 | 100.00% |
EXPORT_SYMBOL(crypto_sha512_finup);
static struct shash_alg sha512_algs[2] = { {
.digestsize = SHA512_DIGEST_SIZE,
.init = sha512_base_init,
.update = crypto_sha512_update,
.final = sha512_final,
.finup = crypto_sha512_finup,
.descsize = sizeof(struct sha512_state),
.base = {
.cra_name = "sha512",
.cra_driver_name = "sha512-generic",
.cra_flags = CRYPTO_ALG_TYPE_SHASH,
.cra_blocksize = SHA512_BLOCK_SIZE,
.cra_module = THIS_MODULE,
}
}, {
.digestsize = SHA384_DIGEST_SIZE,
.init = sha384_base_init,
.update = crypto_sha512_update,
.final = sha512_final,
.finup = crypto_sha512_finup,
.descsize = sizeof(struct sha512_state),
.base = {
.cra_name = "sha384",
.cra_driver_name = "sha384-generic",
.cra_flags = CRYPTO_ALG_TYPE_SHASH,
.cra_blocksize = SHA384_BLOCK_SIZE,
.cra_module = THIS_MODULE,
}
} };
static int __init sha512_generic_mod_init(void)
{
return crypto_register_shashes(sha512_algs, ARRAY_SIZE(sha512_algs));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| james morris | james morris | 13 | 65.00% | 1 | 33.33% |
| jussi kivilinna | jussi kivilinna | 6 | 30.00% | 1 | 33.33% |
| kamalesh babulal | kamalesh babulal | 1 | 5.00% | 1 | 33.33% |
| Total | 20 | 100.00% | 3 | 100.00% |
static void __exit sha512_generic_mod_fini(void)
{
crypto_unregister_shashes(sha512_algs, ARRAY_SIZE(sha512_algs));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| james morris | james morris | 12 | 63.16% | 1 | 33.33% |
| jussi kivilinna | jussi kivilinna | 6 | 31.58% | 1 | 33.33% |
| kamalesh babulal | kamalesh babulal | 1 | 5.26% | 1 | 33.33% |
| Total | 19 | 100.00% | 3 | 100.00% |
module_init(sha512_generic_mod_init);
module_exit(sha512_generic_mod_fini);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("SHA-512 and SHA-384 Secure Hash Algorithms");
MODULE_ALIAS_CRYPTO("sha384");
MODULE_ALIAS_CRYPTO("sha384-generic");
MODULE_ALIAS_CRYPTO("sha512");
MODULE_ALIAS_CRYPTO("sha512-generic");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| james morris | james morris | 695 | 45.45% | 1 | 3.85% |
| herbert xu | herbert xu | 442 | 28.91% | 5 | 19.23% |
| alexey dobriyan | alexey dobriyan | 89 | 5.82% | 3 | 11.54% |
| hideaki yoshifuji | hideaki yoshifuji | 80 | 5.23% | 1 | 3.85% |
| ard biesheuvel | ard biesheuvel | 72 | 4.71% | 1 | 3.85% |
| adrian-ken rueegsegger | adrian-ken rueegsegger | 63 | 4.12% | 2 | 7.69% |
| jussi kivilinna | jussi kivilinna | 29 | 1.90% | 2 | 7.69% |
| jan glauber | jan glauber | 11 | 0.72% | 2 | 7.69% |
| mathias krause | mathias krause | 10 | 0.65% | 1 | 3.85% |
| tim chen | tim chen | 8 | 0.52% | 1 | 3.85% |
| jean-luc cooke | jean-luc cooke | 7 | 0.46% | 1 | 3.85% |
| atsushi nemoto | atsushi nemoto | 6 | 0.39% | 1 | 3.85% |
| david s. miller | david s. miller | 6 | 0.39% | 1 | 3.85% |
| andrew morton | andrew morton | 4 | 0.26% | 1 | 3.85% |
| kamalesh babulal | kamalesh babulal | 4 | 0.26% | 1 | 3.85% |
| kees cook | kees cook | 2 | 0.13% | 1 | 3.85% |
| adrian bunk | adrian bunk | 1 | 0.07% | 1 | 3.85% |
| Total | 1529 | 100.00% | 26 | 100.00% |
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