[fio.git] / crc / sha512.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 <string.h>
#include <inttypes.h>

#include "sha512.h"

#if __BYTE_ORDER == __LITTLE_ENDIAN
static int __be64_to_cpu(uint64_t val)
{
	uint64_t c1, c2, c3, c4, c5, c6, c7, c8;

	c1 = (val >> 56) & 0xff;
	c2 = (val >> 48) & 0xff;
	c3 = (val >> 40) & 0xff;
	c4 = (val >> 32) & 0xff;
	c5 = (val >> 24) & 0xff;
	c6 = (val >> 16) & 0xff;
	c7 = (val >> 8) & 0xff;
	c8 = val & 0xff;

	return c1 | c2 << 8 | c3 << 16 | c4 << 24 | c5 << 32 | c6 << 40 | c7 << 48 | c8 << 56;
}
#else
#define __be64_to_cpu(x)	(x)
#endif

#define SHA384_DIGEST_SIZE 48
#define SHA512_DIGEST_SIZE 64
#define SHA384_HMAC_BLOCK_SIZE 128
#define SHA512_HMAC_BLOCK_SIZE 128

static inline uint64_t Ch(uint64_t x, uint64_t y, uint64_t z)
{
        return z ^ (x & (y ^ z));
}

static inline uint64_t Maj(uint64_t x, uint64_t y, uint64_t z)
{
        return (x & y) | (z & (x | y));
}

static inline uint64_t RORuint64_t(uint64_t x, uint64_t y)
{
        return (x >> y) | (x << (64 - y));
}

static const uint64_t 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)       (RORuint64_t(x,28) ^ RORuint64_t(x,34) ^ RORuint64_t(x,39))
#define e1(x)       (RORuint64_t(x,14) ^ RORuint64_t(x,18) ^ RORuint64_t(x,41))
#define s0(x)       (RORuint64_t(x, 1) ^ RORuint64_t(x, 8) ^ (x >> 7))
#define s1(x)       (RORuint64_t(x,19) ^ RORuint64_t(x,61) ^ (x >> 6))

/* H* initial state for SHA-512 */
#define H0         0x6a09e667f3bcc908ULL
#define H1         0xbb67ae8584caa73bULL
#define H2         0x3c6ef372fe94f82bULL
#define H3         0xa54ff53a5f1d36f1ULL
#define H4         0x510e527fade682d1ULL
#define H5         0x9b05688c2b3e6c1fULL
#define H6         0x1f83d9abfb41bd6bULL
#define H7         0x5be0cd19137e2179ULL

/* H'* initial state for SHA-384 */
#define HP0 0xcbbb9d5dc1059ed8ULL
#define HP1 0x629a292a367cd507ULL
#define HP2 0x9159015a3070dd17ULL
#define HP3 0x152fecd8f70e5939ULL
#define HP4 0x67332667ffc00b31ULL
#define HP5 0x8eb44a8768581511ULL
#define HP6 0xdb0c2e0d64f98fa7ULL
#define HP7 0x47b5481dbefa4fa4ULL

static inline void LOAD_OP(int I, uint64_t *W, const uint8_t *input)
{
	W[I] = __be64_to_cpu( ((uint64_t *)(input))[I] );
}

static inline void BLEND_OP(int I, uint64_t *W)
{
	W[I] = s1(W[I-2]) + W[I-7] + s0(W[I-15]) + W[I-16];
}

static void sha512_transform(uint64_t *state, uint64_t *W, const uint8_t *input)
{
	uint64_t a, b, c, d, e, f, g, h, t1, t2;

	int i;

	/* load the input */
	for (i = 0; i < 16; i++)
		LOAD_OP(i, W, input);

	for (i = 16; i < 80; i++)
		BLEND_OP(i, W);

	/* 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) {
		t1 = h + e1(e) + Ch(e,f,g) + sha512_K[i  ] + W[i  ];
		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+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+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+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+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+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+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+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;
}

void sha512_init(struct sha512_ctx *sctx)
{
	sctx->state[0] = H0;
	sctx->state[1] = H1;
	sctx->state[2] = H2;
	sctx->state[3] = H3;
	sctx->state[4] = H4;
	sctx->state[5] = H5;
	sctx->state[6] = H6;
	sctx->state[7] = H7;
	sctx->count[0] = sctx->count[1] = sctx->count[2] = sctx->count[3] = 0;
}

void sha512_update(struct sha512_ctx *sctx, const uint8_t *data,
		   unsigned int len)
{
	unsigned int i, index, part_len;

	/* Compute number of bytes mod 128 */
	index = (unsigned int)((sctx->count[0] >> 3) & 0x7F);
	
	/* Update number of bits */
	if ((sctx->count[0] += (len << 3)) < (len << 3)) {
		if ((sctx->count[1] += 1) < 1)
			if ((sctx->count[2] += 1) < 1)
				sctx->count[3]++;
		sctx->count[1] += (len >> 29);
	}
	
        part_len = 128 - index;
	
	/* Transform as many times as possible. */
	if (len >= part_len) {
		memcpy(&sctx->buf[index], data, part_len);
		sha512_transform(sctx->state, sctx->W, sctx->buf);

		for (i = part_len; i + 127 < len; i+=128)
			sha512_transform(sctx->state, sctx->W, &data[i]);

		index = 0;
	} else {
		i = 0;
	}

	/* Buffer remaining input */
	memcpy(&sctx->buf[index], &data[i], len - i);

	/* erase our data */
	memset(sctx->W, 0, sizeof(sctx->W));
}
Commit	Line	Data
cd14cc10 JA	1	/* SHA-512 code by Jean-Luc Cooke <jlcooke@certainkey.com>
	2	*
	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>
	6	*
	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
	10	* later version.
	11	*
	12	*/
	13
	14	#include <string.h>
	15	#include <inttypes.h>
cd14cc10 JA	16
	17	#include "sha512.h"
	18
	19	#if __BYTE_ORDER == __LITTLE_ENDIAN
5921e80c JA	20	static int __be64_to_cpu(uint64_t val)
	21	{
	22	uint64_t c1, c2, c3, c4, c5, c6, c7, c8;
	23
	24	c1 = (val >> 56) & 0xff;
	25	c2 = (val >> 48) & 0xff;
	26	c3 = (val >> 40) & 0xff;
	27	c4 = (val >> 32) & 0xff;
	28	c5 = (val >> 24) & 0xff;
	29	c6 = (val >> 16) & 0xff;
	30	c7 = (val >> 8) & 0xff;
	31	c8 = val & 0xff;
	32
	33	return c1 \| c2 << 8 \| c3 << 16 \| c4 << 24 \| c5 << 32 \| c6 << 40 \| c7 << 48 \| c8 << 56;
	34	}
cd14cc10 JA	35	#else
	36	#define __be64_to_cpu(x) (x)
	37	#endif
	38
	39	#define SHA384_DIGEST_SIZE 48
	40	#define SHA512_DIGEST_SIZE 64
	41	#define SHA384_HMAC_BLOCK_SIZE 128
	42	#define SHA512_HMAC_BLOCK_SIZE 128
	43
	44	static inline uint64_t Ch(uint64_t x, uint64_t y, uint64_t z)
	45	{
	46	return z ^ (x & (y ^ z));
	47	}
	48
	49	static inline uint64_t Maj(uint64_t x, uint64_t y, uint64_t z)
	50	{
	51	return (x & y) \| (z & (x \| y));
	52	}
	53
	54	static inline uint64_t RORuint64_t(uint64_t x, uint64_t y)
	55	{
	56	return (x >> y) \| (x << (64 - y));
	57	}
	58
	59	static const uint64_t sha512_K[80] = {
	60	0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 0xb5c0fbcfec4d3b2fULL,
	61	0xe9b5dba58189dbbcULL, 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
	62	0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, 0xd807aa98a3030242ULL,
	63	0x12835b0145706fbeULL, 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
	64	0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 0x9bdc06a725c71235ULL,
	65	0xc19bf174cf692694ULL, 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
	66	0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, 0x2de92c6f592b0275ULL,
	67	0x4a7484aa6ea6e483ULL, 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
	68	0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 0xb00327c898fb213fULL,
	69	0xbf597fc7beef0ee4ULL, 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
	70	0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, 0x27b70a8546d22ffcULL,
	71	0x2e1b21385c26c926ULL, 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
	72	0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 0x81c2c92e47edaee6ULL,
	73	0x92722c851482353bULL, 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
	74	0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, 0xd192e819d6ef5218ULL,
	75	0xd69906245565a910ULL, 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
	76	0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 0x2748774cdf8eeb99ULL,
	77	0x34b0bcb5e19b48a8ULL, 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
	78	0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, 0x748f82ee5defb2fcULL,
	79	0x78a5636f43172f60ULL, 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
	80	0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 0xbef9a3f7b2c67915ULL,
	81	0xc67178f2e372532bULL, 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
	82	0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, 0x06f067aa72176fbaULL,
	83	0x0a637dc5a2c898a6ULL, 0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
	84	0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 0x3c9ebe0a15c9bebcULL,
	85	0x431d67c49c100d4cULL, 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
	86	0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL,
	87	};
	88
	89	#define e0(x) (RORuint64_t(x,28) ^ RORuint64_t(x,34) ^ RORuint64_t(x,39))
	90	#define e1(x) (RORuint64_t(x,14) ^ RORuint64_t(x,18) ^ RORuint64_t(x,41))
	91	#define s0(x) (RORuint64_t(x, 1) ^ RORuint64_t(x, 8) ^ (x >> 7))
	92	#define s1(x) (RORuint64_t(x,19) ^ RORuint64_t(x,61) ^ (x >> 6))
	93
	94	/* H* initial state for SHA-512 */
	95	#define H0 0x6a09e667f3bcc908ULL
	96	#define H1 0xbb67ae8584caa73bULL
	97	#define H2 0x3c6ef372fe94f82bULL
	98	#define H3 0xa54ff53a5f1d36f1ULL
99	#define H4 0x510e527fade682d1ULL
100	#define H5 0x9b05688c2b3e6c1fULL
101	#define H6 0x1f83d9abfb41bd6bULL
102	#define H7 0x5be0cd19137e2179ULL
103
104	/* H'* initial state for SHA-384 */
105	#define HP0 0xcbbb9d5dc1059ed8ULL
106	#define HP1 0x629a292a367cd507ULL
107	#define HP2 0x9159015a3070dd17ULL
108	#define HP3 0x152fecd8f70e5939ULL
109	#define HP4 0x67332667ffc00b31ULL
110	#define HP5 0x8eb44a8768581511ULL
111	#define HP6 0xdb0c2e0d64f98fa7ULL
112	#define HP7 0x47b5481dbefa4fa4ULL
113
114	static inline void LOAD_OP(int I, uint64_t W, const uint8_t input)
115	{
116	W[I] = __be64_to_cpu( ((uint64_t *)(input))[I] );
117	}
118
119	static inline void BLEND_OP(int I, uint64_t *W)
120	{
121	W[I] = s1(W[I-2]) + W[I-7] + s0(W[I-15]) + W[I-16];
122	}
123
124	static void sha512_transform(uint64_t state, uint64_t W, const uint8_t *input)
125	{
126	uint64_t a, b, c, d, e, f, g, h, t1, t2;
127
128	int i;
129
130	/* load the input */
131	for (i = 0; i < 16; i++)
132	LOAD_OP(i, W, input);
133
134	for (i = 16; i < 80; i++)
135	BLEND_OP(i, W);
136
137	/* load the state into our registers */
138	a=state[0]; b=state[1]; c=state[2]; d=state[3];
139	e=state[4]; f=state[5]; g=state[6]; h=state[7];
140
141	/* now iterate */
142	for (i=0; i<80; i+=8) {
143	t1 = h + e1(e) + Ch(e,f,g) + sha512_K[i ] + W[i ];
144	t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
145	t1 = g + e1(d) + Ch(d,e,f) + sha512_K[i+1] + W[i+1];
146	t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
147	t1 = f + e1(c) + Ch(c,d,e) + sha512_K[i+2] + W[i+2];
148	t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
149	t1 = e + e1(b) + Ch(b,c,d) + sha512_K[i+3] + W[i+3];
150	t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
151	t1 = d + e1(a) + Ch(a,b,c) + sha512_K[i+4] + W[i+4];
152	t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
153	t1 = c + e1(h) + Ch(h,a,b) + sha512_K[i+5] + W[i+5];
154	t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
155	t1 = b + e1(g) + Ch(g,h,a) + sha512_K[i+6] + W[i+6];
156	t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
157	t1 = a + e1(f) + Ch(f,g,h) + sha512_K[i+7] + W[i+7];
158	t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
159	}
160
161	state[0] += a; state[1] += b; state[2] += c; state[3] += d;
162	state[4] += e; state[5] += f; state[6] += g; state[7] += h;
163
164	/* erase our data */
165	a = b = c = d = e = f = g = h = t1 = t2 = 0;
166	}
167
168	void sha512_init(struct sha512_ctx *sctx)
169	{
170	sctx->state[0] = H0;
171	sctx->state[1] = H1;
172	sctx->state[2] = H2;
173	sctx->state[3] = H3;
174	sctx->state[4] = H4;
175	sctx->state[5] = H5;
176	sctx->state[6] = H6;
177	sctx->state[7] = H7;
178	sctx->count[0] = sctx->count[1] = sctx->count[2] = sctx->count[3] = 0;
179	}
180
181	void sha512_update(struct sha512_ctx sctx, const uint8_t data,
182	unsigned int len)
183	{
184	unsigned int i, index, part_len;
185
186	/* Compute number of bytes mod 128 */
187	index = (unsigned int)((sctx->count[0] >> 3) & 0x7F);
188
189	/* Update number of bits */
190	if ((sctx->count[0] += (len << 3)) < (len << 3)) {
191	if ((sctx->count[1] += 1) < 1)
192	if ((sctx->count[2] += 1) < 1)
193	sctx->count[3]++;
194	sctx->count[1] += (len >> 29);
195	}
196
197	part_len = 128 - index;
198
199	/* Transform as many times as possible. */
200	if (len >= part_len) {
201	memcpy(&sctx->buf[index], data, part_len);
202	sha512_transform(sctx->state, sctx->W, sctx->buf);
203
204	for (i = part_len; i + 127 < len; i+=128)
205	sha512_transform(sctx->state, sctx->W, &data[i]);
206
207	index = 0;
208	} else {
209	i = 0;
210	}
211
212	/* Buffer remaining input */
213	memcpy(&sctx->buf[index], &data[i], len - i);
214
215	/* erase our data */
216	memset(sctx->W, 0, sizeof(sctx->W));
217	}