Subversion Repositories planix.SVN

/*

 * sha2_512 block cipher - unrolled version

 *

 *   note: the following upper and lower case macro names are distinct

 *	   and reflect the functions defined in FIPS pub. 180-2.

 */

#include "os.h"

#define ROTR(x,n)	(((x) >> (n)) | ((x) << (64-(n))))

#define sigma0(x)	(ROTR((x),1) ^ ROTR((x),8) ^ ((x) >> 7))

#define sigma1(x)	(ROTR((x),19) ^ ROTR((x),61) ^ ((x) >> 6))

#define SIGMA0(x)	(ROTR((x),28) ^ ROTR((x),34) ^ ROTR((x),39))

#define SIGMA1(x)	(ROTR((x),14) ^ ROTR((x),18) ^ ROTR((x),41))

#define Ch(x,y,z)	((z) ^ ((x) & ((y) ^ (z))))

#define Maj(x,y,z)	(((x) | (y)) & ((z) | ((x) & (y))))

/*

 * first 64 bits of the fractional parts of cube roots of

 * first 80 primes (2..311).

 */

static u64int K512[80] = {

	0x428a2f98d728ae22LL, 0x7137449123ef65cdLL, 0xb5c0fbcfec4d3b2fLL, 0xe9b5dba58189dbbcLL,

	0x3956c25bf348b538LL, 0x59f111f1b605d019LL, 0x923f82a4af194f9bLL, 0xab1c5ed5da6d8118LL,

	0xd807aa98a3030242LL, 0x12835b0145706fbeLL, 0x243185be4ee4b28cLL, 0x550c7dc3d5ffb4e2LL,

	0x72be5d74f27b896fLL, 0x80deb1fe3b1696b1LL, 0x9bdc06a725c71235LL, 0xc19bf174cf692694LL,

	0xe49b69c19ef14ad2LL, 0xefbe4786384f25e3LL, 0x0fc19dc68b8cd5b5LL, 0x240ca1cc77ac9c65LL,

	0x2de92c6f592b0275LL, 0x4a7484aa6ea6e483LL, 0x5cb0a9dcbd41fbd4LL, 0x76f988da831153b5LL,

	0x983e5152ee66dfabLL, 0xa831c66d2db43210LL, 0xb00327c898fb213fLL, 0xbf597fc7beef0ee4LL,

	0xc6e00bf33da88fc2LL, 0xd5a79147930aa725LL, 0x06ca6351e003826fLL, 0x142929670a0e6e70LL,

	0x27b70a8546d22ffcLL, 0x2e1b21385c26c926LL, 0x4d2c6dfc5ac42aedLL, 0x53380d139d95b3dfLL,

	0x650a73548baf63deLL, 0x766a0abb3c77b2a8LL, 0x81c2c92e47edaee6LL, 0x92722c851482353bLL,

	0xa2bfe8a14cf10364LL, 0xa81a664bbc423001LL, 0xc24b8b70d0f89791LL, 0xc76c51a30654be30LL,

	0xd192e819d6ef5218LL, 0xd69906245565a910LL, 0xf40e35855771202aLL, 0x106aa07032bbd1b8LL,

	0x19a4c116b8d2d0c8LL, 0x1e376c085141ab53LL, 0x2748774cdf8eeb99LL, 0x34b0bcb5e19b48a8LL,

	0x391c0cb3c5c95a63LL, 0x4ed8aa4ae3418acbLL, 0x5b9cca4f7763e373LL, 0x682e6ff3d6b2b8a3LL,

	0x748f82ee5defb2fcLL, 0x78a5636f43172f60LL, 0x84c87814a1f0ab72LL, 0x8cc702081a6439ecLL,

	0x90befffa23631e28LL, 0xa4506cebde82bde9LL, 0xbef9a3f7b2c67915LL, 0xc67178f2e372532bLL,

	0xca273eceea26619cLL, 0xd186b8c721c0c207LL, 0xeada7dd6cde0eb1eLL, 0xf57d4f7fee6ed178LL,

	0x06f067aa72176fbaLL, 0x0a637dc5a2c898a6LL, 0x113f9804bef90daeLL, 0x1b710b35131c471bLL,

	0x28db77f523047d84LL, 0x32caab7b40c72493LL, 0x3c9ebe0a15c9bebcLL, 0x431d67c49c100d4cLL,

	0x4cc5d4becb3e42b6LL, 0x597f299cfc657e2aLL, 0x5fcb6fab3ad6faecLL, 0x6c44198c4a475817LL

};

void

_sha2block128(uchar *p, ulong len, u64int *s)

{

	u64int w[16], a, b, c, d, e, f, g, h;

	uchar *end;

	/* at this point, we have a multiple of 64 bytes */

	for(end = p+len; p < end;){

		a = s[0];

		b = s[1];

		c = s[2];

		d = s[3];

		e = s[4];

		f = s[5];

		g = s[6];

		h = s[7];

#define STEP(a,b,c,d,e,f,g,h,i) \

	if(i < 16) { \

		w[i] = 	(u64int)(p[0]<<24 | p[1]<<16 | p[2]<<8 | p[3])<<32 | \

			(p[4]<<24 | p[5]<<16 | p[6]<<8 | p[7]); \

		p += 8; \

	} else { \

		u64int s0, s1; \

		s1 = sigma1(w[i-2&15]); \

		s0 = sigma0(w[i-15&15]); \

		w[i&15] += s1 + w[i-7&15] + s0; \

	} \

	h += SIGMA1(e) + Ch(e,f,g) + K512[i] + w[i&15]; \

	d += h; \

	h += SIGMA0(a) + Maj(a,b,c);

		STEP(a,b,c,d,e,f,g,h,0);

		STEP(h,a,b,c,d,e,f,g,1);

		STEP(g,h,a,b,c,d,e,f,2);

		STEP(f,g,h,a,b,c,d,e,3);

		STEP(e,f,g,h,a,b,c,d,4);

		STEP(d,e,f,g,h,a,b,c,5);

		STEP(c,d,e,f,g,h,a,b,6);

		STEP(b,c,d,e,f,g,h,a,7);

		STEP(a,b,c,d,e,f,g,h,8);

		STEP(h,a,b,c,d,e,f,g,9);

		STEP(g,h,a,b,c,d,e,f,10);

		STEP(f,g,h,a,b,c,d,e,11);

		STEP(e,f,g,h,a,b,c,d,12);

		STEP(d,e,f,g,h,a,b,c,13);

		STEP(c,d,e,f,g,h,a,b,14);

		STEP(b,c,d,e,f,g,h,a,15);

		STEP(a,b,c,d,e,f,g,h,16);

		STEP(h,a,b,c,d,e,f,g,17);

		STEP(g,h,a,b,c,d,e,f,18);

		STEP(f,g,h,a,b,c,d,e,19);

		STEP(e,f,g,h,a,b,c,d,20);

		STEP(d,e,f,g,h,a,b,c,21);

		STEP(c,d,e,f,g,h,a,b,22);

		STEP(b,c,d,e,f,g,h,a,23);

		STEP(a,b,c,d,e,f,g,h,24);

		STEP(h,a,b,c,d,e,f,g,25);

		STEP(g,h,a,b,c,d,e,f,26);

		STEP(f,g,h,a,b,c,d,e,27);

		STEP(e,f,g,h,a,b,c,d,28);

		STEP(d,e,f,g,h,a,b,c,29);

		STEP(c,d,e,f,g,h,a,b,30);

		STEP(b,c,d,e,f,g,h,a,31);

		STEP(a,b,c,d,e,f,g,h,32);

		STEP(h,a,b,c,d,e,f,g,33);

		STEP(g,h,a,b,c,d,e,f,34);

		STEP(f,g,h,a,b,c,d,e,35);

		STEP(e,f,g,h,a,b,c,d,36);

		STEP(d,e,f,g,h,a,b,c,37);

		STEP(c,d,e,f,g,h,a,b,38);

		STEP(b,c,d,e,f,g,h,a,39);

		STEP(a,b,c,d,e,f,g,h,40);

		STEP(h,a,b,c,d,e,f,g,41);

		STEP(g,h,a,b,c,d,e,f,42);

		STEP(f,g,h,a,b,c,d,e,43);

		STEP(e,f,g,h,a,b,c,d,44);

		STEP(d,e,f,g,h,a,b,c,45);

		STEP(c,d,e,f,g,h,a,b,46);

		STEP(b,c,d,e,f,g,h,a,47);

		STEP(a,b,c,d,e,f,g,h,48);

		STEP(h,a,b,c,d,e,f,g,49);

		STEP(g,h,a,b,c,d,e,f,50);

		STEP(f,g,h,a,b,c,d,e,51);

		STEP(e,f,g,h,a,b,c,d,52);

		STEP(d,e,f,g,h,a,b,c,53);

		STEP(c,d,e,f,g,h,a,b,54);

		STEP(b,c,d,e,f,g,h,a,55);

		STEP(a,b,c,d,e,f,g,h,56);

		STEP(h,a,b,c,d,e,f,g,57);

		STEP(g,h,a,b,c,d,e,f,58);

		STEP(f,g,h,a,b,c,d,e,59);

		STEP(e,f,g,h,a,b,c,d,60);

		STEP(d,e,f,g,h,a,b,c,61);

		STEP(c,d,e,f,g,h,a,b,62);

		STEP(b,c,d,e,f,g,h,a,63);

		STEP(a,b,c,d,e,f,g,h,64);

		STEP(h,a,b,c,d,e,f,g,65);

		STEP(g,h,a,b,c,d,e,f,66);

		STEP(f,g,h,a,b,c,d,e,67);

		STEP(e,f,g,h,a,b,c,d,68);

		STEP(d,e,f,g,h,a,b,c,69);

		STEP(c,d,e,f,g,h,a,b,70);

		STEP(b,c,d,e,f,g,h,a,71);

		STEP(a,b,c,d,e,f,g,h,72);

		STEP(h,a,b,c,d,e,f,g,73);

		STEP(g,h,a,b,c,d,e,f,74);

		STEP(f,g,h,a,b,c,d,e,75);

		STEP(e,f,g,h,a,b,c,d,76);

		STEP(d,e,f,g,h,a,b,c,77);

		STEP(c,d,e,f,g,h,a,b,78);

		STEP(b,c,d,e,f,g,h,a,79);

		s[0] += a;

		s[1] += b;

		s[2] += c;

		s[3] += d;

		s[4] += e;

		s[5] += f;

		s[6] += g;

		s[7] += h;

	}

}