/* * 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;	}}