// sha.cpp - modified by Wei Dai from Steve Reid's public domain sha1.c// Steve Reid implemented SHA-1. Wei Dai implemented SHA-2.// Both are in the public domain.#include "pch.h"#include "sha.h"#include "misc.h"NAMESPACE_BEGIN(CryptoPP)void SHA::Init(){	m_digest[0] = 0x67452301L;	m_digest[1] = 0xEFCDAB89L;	m_digest[2] = 0x98BADCFEL;	m_digest[3] = 0x10325476L;	m_digest[4] = 0xC3D2E1F0L;}// start of Steve Reid's code#define blk0(i) (W[i] = data[i])#define blk1(i) (W[i&15] = rotlFixed(W[(i+13)&15]^W[(i+8)&15]^W[(i+2)&15]^W[i&15],1))#define f1(x,y,z) (z^(x&(y^z)))#define f2(x,y,z) (x^y^z)#define f3(x,y,z) ((x&y)|(z&(x|y)))#define f4(x,y,z) (x^y^z)/* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */#define R0(v,w,x,y,z,i) z+=f1(w,x,y)+blk0(i)+0x5A827999+rotlFixed(v,5);w=rotlFixed(w,30);#define R1(v,w,x,y,z,i) z+=f1(w,x,y)+blk1(i)+0x5A827999+rotlFixed(v,5);w=rotlFixed(w,30);#define R2(v,w,x,y,z,i) z+=f2(w,x,y)+blk1(i)+0x6ED9EBA1+rotlFixed(v,5);w=rotlFixed(w,30);#define R3(v,w,x,y,z,i) z+=f3(w,x,y)+blk1(i)+0x8F1BBCDC+rotlFixed(v,5);w=rotlFixed(w,30);#define R4(v,w,x,y,z,i) z+=f4(w,x,y)+blk1(i)+0xCA62C1D6+rotlFixed(v,5);w=rotlFixed(w,30);void SHA::Transform(word32 *state, const word32 *data){	word32 W[16];    /* Copy context->state[] to working vars */    word32 a = state[0];    word32 b = state[1];    word32 c = state[2];    word32 d = state[3];    word32 e = state[4];    /* 4 rounds of 20 operations each. Loop unrolled. */    R0(a,b,c,d,e, 0); R0(e,a,b,c,d, 1); R0(d,e,a,b,c, 2); R0(c,d,e,a,b, 3);    R0(b,c,d,e,a, 4); R0(a,b,c,d,e, 5); R0(e,a,b,c,d, 6); R0(d,e,a,b,c, 7);    R0(c,d,e,a,b, 8); R0(b,c,d,e,a, 9); R0(a,b,c,d,e,10); R0(e,a,b,c,d,11);    R0(d,e,a,b,c,12); R0(c,d,e,a,b,13); R0(b,c,d,e,a,14); R0(a,b,c,d,e,15);    R1(e,a,b,c,d,16); R1(d,e,a,b,c,17); R1(c,d,e,a,b,18); R1(b,c,d,e,a,19);    R2(a,b,c,d,e,20); R2(e,a,b,c,d,21); R2(d,e,a,b,c,22); R2(c,d,e,a,b,23);    R2(b,c,d,e,a,24); R2(a,b,c,d,e,25); R2(e,a,b,c,d,26); R2(d,e,a,b,c,27);    R2(c,d,e,a,b,28); R2(b,c,d,e,a,29); R2(a,b,c,d,e,30); R2(e,a,b,c,d,31);    R2(d,e,a,b,c,32); R2(c,d,e,a,b,33); R2(b,c,d,e,a,34); R2(a,b,c,d,e,35);    R2(e,a,b,c,d,36); R2(d,e,a,b,c,37); R2(c,d,e,a,b,38); R2(b,c,d,e,a,39);    R3(a,b,c,d,e,40); R3(e,a,b,c,d,41); R3(d,e,a,b,c,42); R3(c,d,e,a,b,43);    R3(b,c,d,e,a,44); R3(a,b,c,d,e,45); R3(e,a,b,c,d,46); R3(d,e,a,b,c,47);    R3(c,d,e,a,b,48); R3(b,c,d,e,a,49); R3(a,b,c,d,e,50); R3(e,a,b,c,d,51);    R3(d,e,a,b,c,52); R3(c,d,e,a,b,53); R3(b,c,d,e,a,54); R3(a,b,c,d,e,55);    R3(e,a,b,c,d,56); R3(d,e,a,b,c,57); R3(c,d,e,a,b,58); R3(b,c,d,e,a,59);    R4(a,b,c,d,e,60); R4(e,a,b,c,d,61); R4(d,e,a,b,c,62); R4(c,d,e,a,b,63);    R4(b,c,d,e,a,64); R4(a,b,c,d,e,65); R4(e,a,b,c,d,66); R4(d,e,a,b,c,67);    R4(c,d,e,a,b,68); R4(b,c,d,e,a,69); R4(a,b,c,d,e,70); R4(e,a,b,c,d,71);    R4(d,e,a,b,c,72); R4(c,d,e,a,b,73); R4(b,c,d,e,a,74); R4(a,b,c,d,e,75);    R4(e,a,b,c,d,76); R4(d,e,a,b,c,77); R4(c,d,e,a,b,78); R4(b,c,d,e,a,79);    /* Add the working vars back into context.state[] */    state[0] += a;    state[1] += b;    state[2] += c;    state[3] += d;    state[4] += e;    /* Wipe variables */    a = b = c = d = e = 0;	memset(W, 0, sizeof(W));}// end of Steve Reid's code// *************************************************************void SHA256::Init(){	m_digest[0] = 0x6a09e667;	m_digest[1] = 0xbb67ae85;	m_digest[2] = 0x3c6ef372;	m_digest[3] = 0xa54ff53a;	m_digest[4] = 0x510e527f;	m_digest[5] = 0x9b05688c;	m_digest[6] = 0x1f83d9ab;	m_digest[7] = 0x5be0cd19;}#define blk2(i) (W[i&15]+=s1(W[(i-2)&15])+W[(i-7)&15]+s0(W[(i-15)&15]))#define Ch(x,y,z) (z^(x&(y^z)))#define Maj(x,y,z) ((x&y)|(z&(x|y)))#define a(i) T[(0-i)&7]#define b(i) T[(1-i)&7]#define c(i) T[(2-i)&7]#define d(i) T[(3-i)&7]#define e(i) T[(4-i)&7]#define f(i) T[(5-i)&7]#define g(i) T[(6-i)&7]#define h(i) T[(7-i)&7]#define R(i) h(i)+=S1(e(i))+Ch(e(i),f(i),g(i))+K[i+j]+(j?blk2(i):blk0(i));\	d(i)+=h(i);h(i)+=S0(a(i))+Maj(a(i),b(i),c(i))// for SHA256#define S0(x) (rotrFixed(x,2)^rotrFixed(x,13)^rotrFixed(x,22))#define S1(x) (rotrFixed(x,6)^rotrFixed(x,11)^rotrFixed(x,25))#define s0(x) (rotrFixed(x,7)^rotrFixed(x,18)^(x>>3))#define s1(x) (rotrFixed(x,17)^rotrFixed(x,19)^(x>>10))void SHA256::Transform(word32 *state, const word32 *data){	word32 W[16];	word32 T[8];    /* Copy context->state[] to working vars */	memcpy(T, state, sizeof(T));    /* 64 operations, partially loop unrolled */	for (unsigned int j=0; j<64; j+=16)	{		R( 0); R( 1); R( 2); R( 3);		R( 4); R( 5); R( 6); R( 7);		R( 8); R( 9); R(10); R(11);		R(12); R(13); R(14); R(15);	}    /* Add the working vars back into context.state[] */    state[0] += a(0);    state[1] += b(0);    state[2] += c(0);    state[3] += d(0);    state[4] += e(0);    state[5] += f(0);    state[6] += g(0);    state[7] += h(0);    /* Wipe variables */	memset(W, 0, sizeof(W));	memset(T, 0, sizeof(T));}const word32 SHA256::K[64] = {	0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,	0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,	0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,	0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,	0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,	0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,	0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,	0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,	0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,	0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,	0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,	0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,	0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,	0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,	0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,	0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2};#undef S0#undef S1#undef s0#undef s1// *************************************************************#ifdef WORD64_AVAILABLEvoid SHA512::Init(){	m_digest[0] = W64LIT(0x6a09e667f3bcc908);	m_digest[1] = W64LIT(0xbb67ae8584caa73b);	m_digest[2] = W64LIT(0x3c6ef372fe94f82b);	m_digest[3] = W64LIT(0xa54ff53a5f1d36f1);	m_digest[4] = W64LIT(0x510e527fade682d1);	m_digest[5] = W64LIT(0x9b05688c2b3e6c1f);	m_digest[6] = W64LIT(0x1f83d9abfb41bd6b);	m_digest[7] = W64LIT(0x5be0cd19137e2179);}// for SHA512#define S0(x) (rotrFixed(x,28)^rotrFixed(x,34)^rotrFixed(x,39))#define S1(x) (rotrFixed(x,14)^rotrFixed(x,18)^rotrFixed(x,41))#define s0(x) (rotrFixed(x,1)^rotrFixed(x,8)^(x>>7))#define s1(x) (rotrFixed(x,19)^rotrFixed(x,61)^(x>>6))void SHA512::Transform(word64 *state, const word64 *data){	word64 W[16];	word64 T[8];    /* Copy context->state[] to working vars */	memcpy(T, state, sizeof(T));    /* 80 operations, partially loop unrolled */	for (unsigned int j=0; j<80; j+=16)	{		R( 0); R( 1); R( 2); R( 3);		R( 4); R( 5); R( 6); R( 7);		R( 8); R( 9); R(10); R(11);		R(12); R(13); R(14); R(15);	}    /* Add the working vars back into context.state[] */    state[0] += a(0);    state[1] += b(0);    state[2] += c(0);    state[3] += d(0);    state[4] += e(0);    state[5] += f(0);    state[6] += g(0);    state[7] += h(0);    /* Wipe variables */	memset(W, 0, sizeof(W));	memset(T, 0, sizeof(T));}const word64 SHA512::K[80] = {	W64LIT(0x428a2f98d728ae22), W64LIT(0x7137449123ef65cd),	W64LIT(0xb5c0fbcfec4d3b2f), W64LIT(0xe9b5dba58189dbbc),	W64LIT(0x3956c25bf348b538), W64LIT(0x59f111f1b605d019),	W64LIT(0x923f82a4af194f9b), W64LIT(0xab1c5ed5da6d8118),	W64LIT(0xd807aa98a3030242), W64LIT(0x12835b0145706fbe),	W64LIT(0x243185be4ee4b28c), W64LIT(0x550c7dc3d5ffb4e2),	W64LIT(0x72be5d74f27b896f), W64LIT(0x80deb1fe3b1696b1),	W64LIT(0x9bdc06a725c71235), W64LIT(0xc19bf174cf692694),	W64LIT(0xe49b69c19ef14ad2), W64LIT(0xefbe4786384f25e3),	W64LIT(0x0fc19dc68b8cd5b5), W64LIT(0x240ca1cc77ac9c65),	W64LIT(0x2de92c6f592b0275), W64LIT(0x4a7484aa6ea6e483),	W64LIT(0x5cb0a9dcbd41fbd4), W64LIT(0x76f988da831153b5),	W64LIT(0x983e5152ee66dfab), W64LIT(0xa831c66d2db43210),	W64LIT(0xb00327c898fb213f), W64LIT(0xbf597fc7beef0ee4),	W64LIT(0xc6e00bf33da88fc2), W64LIT(0xd5a79147930aa725),	W64LIT(0x06ca6351e003826f), W64LIT(0x142929670a0e6e70),	W64LIT(0x27b70a8546d22ffc), W64LIT(0x2e1b21385c26c926),	W64LIT(0x4d2c6dfc5ac42aed), W64LIT(0x53380d139d95b3df),	W64LIT(0x650a73548baf63de), W64LIT(0x766a0abb3c77b2a8),	W64LIT(0x81c2c92e47edaee6), W64LIT(0x92722c851482353b),	W64LIT(0xa2bfe8a14cf10364), W64LIT(0xa81a664bbc423001),	W64LIT(0xc24b8b70d0f89791), W64LIT(0xc76c51a30654be30),	W64LIT(0xd192e819d6ef5218), W64LIT(0xd69906245565a910),	W64LIT(0xf40e35855771202a), W64LIT(0x106aa07032bbd1b8),	W64LIT(0x19a4c116b8d2d0c8), W64LIT(0x1e376c085141ab53),	W64LIT(0x2748774cdf8eeb99), W64LIT(0x34b0bcb5e19b48a8),	W64LIT(0x391c0cb3c5c95a63), W64LIT(0x4ed8aa4ae3418acb),	W64LIT(0x5b9cca4f7763e373), W64LIT(0x682e6ff3d6b2b8a3),	W64LIT(0x748f82ee5defb2fc), W64LIT(0x78a5636f43172f60),	W64LIT(0x84c87814a1f0ab72), W64LIT(0x8cc702081a6439ec),	W64LIT(0x90befffa23631e28), W64LIT(0xa4506cebde82bde9),	W64LIT(0xbef9a3f7b2c67915), W64LIT(0xc67178f2e372532b),	W64LIT(0xca273eceea26619c), W64LIT(0xd186b8c721c0c207),	W64LIT(0xeada7dd6cde0eb1e), W64LIT(0xf57d4f7fee6ed178),	W64LIT(0x06f067aa72176fba), W64LIT(0x0a637dc5a2c898a6),	W64LIT(0x113f9804bef90dae), W64LIT(0x1b710b35131c471b),	W64LIT(0x28db77f523047d84), W64LIT(0x32caab7b40c72493),	W64LIT(0x3c9ebe0a15c9bebc), W64LIT(0x431d67c49c100d4c),	W64LIT(0x4cc5d4becb3e42b6), W64LIT(0x597f299cfc657e2a),	W64LIT(0x5fcb6fab3ad6faec), W64LIT(0x6c44198c4a475817)};void SHA384::Init(){	m_digest[0] = W64LIT(0xcbbb9d5dc1059ed8);	m_digest[1] = W64LIT(0x629a292a367cd507);	m_digest[2] = W64LIT(0x9159015a3070dd17);	m_digest[3] = W64LIT(0x152fecd8f70e5939);	m_digest[4] = W64LIT(0x67332667ffc00b31);	m_digest[5] = W64LIT(0x8eb44a8768581511);	m_digest[6] = W64LIT(0xdb0c2e0d64f98fa7);	m_digest[7] = W64LIT(0x47b5481dbefa4fa4);}#endifNAMESPACE_END