+/* crypto/sha/sha512.c */
+/* ====================================================================
+ * Copyright (c) 2004 The OpenSSL Project. All rights reserved.
+ * ====================================================================
+ */
+/*
+ * IMPLEMENTATION NOTES.
+ *
+ * As you might have noticed 32-bit hash algorithms:
+ *
+ * - permit SHA_LONG to be wider than 32-bit (case on CRAY);
+ * - optimized versions implement two transform functions: one operating
+ * on [aligned] data in host byte order and one - on data in input
+ * stream byte order;
+ * - share common byte-order neutral collector and padding function
+ * implementations, ../md32_common.h;
+ *
+ * Neither of the above applies to this SHA-512 implementations. Reasons
+ * [in reverse order] are:
+ *
+ * - it's the only 64-bit hash algorithm for the moment of this writing,
+ * there is no need for common collector/padding implementation [yet];
+ * - by supporting only one transform function [which operates on
+ * *aligned* data in input stream byte order, big-endian in this case]
+ * we minimize burden of maintenance in two ways: a) collector/padding
+ * function is simpler; b) only one transform function to stare at;
+ * - SHA_LONG64 is required to be exactly 64-bit in order to be able to
+ * apply a number of optimizations to mitigate potential performance
+ * penalties caused by previous design decision;
+ *
+ * Caveat lector.
+ *
+ * Implementation relies on the fact that "long long" is 64-bit on
+ * both 32- and 64-bit platforms. If some compiler vendor comes up
+ * with 128-bit long long, adjustment to sha.h would be required.
+ * As this implementation relies on 64-bit integer type, it's totally
+ * inappropriate for platforms which don't support it, most notably
+ * 16-bit platforms.
+ * <appro@fy.chalmers.se>
+ */
+#include <stdlib.h>
+#include <string.h>
+
+#include <openssl/opensslconf.h>
+#include <openssl/crypto.h>
+#include <openssl/sha.h>
+#include <openssl/opensslv.h>
+
+const char *SHA512_version="SHA-512" OPENSSL_VERSION_PTEXT;
+
+int SHA384_Init (SHA512_CTX *c)
+ {
+ c->h[0]=U64(0xcbbb9d5dc1059ed8);
+ c->h[1]=U64(0x629a292a367cd507);
+ c->h[2]=U64(0x9159015a3070dd17);
+ c->h[3]=U64(0x152fecd8f70e5939);
+ c->h[4]=U64(0x67332667ffc00b31);
+ c->h[5]=U64(0x8eb44a8768581511);
+ c->h[6]=U64(0xdb0c2e0d64f98fa7);
+ c->h[7]=U64(0x47b5481dbefa4fa4);
+ c->Nl=0; c->Nh=0;
+ c->num=0;
+ return 1;
+ }
+
+int SHA512_Init (SHA512_CTX *c)
+ {
+ c->h[0]=U64(0x6a09e667f3bcc908);
+ c->h[1]=U64(0xbb67ae8584caa73b);
+ c->h[2]=U64(0x3c6ef372fe94f82b);
+ c->h[3]=U64(0xa54ff53a5f1d36f1);
+ c->h[4]=U64(0x510e527fade682d1);
+ c->h[5]=U64(0x9b05688c2b3e6c1f);
+ c->h[6]=U64(0x1f83d9abfb41bd6b);
+ c->h[7]=U64(0x5be0cd19137e2179);
+ c->Nl=0; c->Nh=0;
+ c->num=0;
+ return 1;
+ }
+
+static void sha512_block (SHA512_CTX *ctx, const void *in, size_t num);
+
+static int sha512_final (unsigned char *md, SHA512_CTX *c, size_t msz)
+ {
+ unsigned char *p=(unsigned char *)c->u.p;
+ size_t n=c->num;
+
+ p[n]=0x80;
+ n++;
+ if (n > (sizeof(c->u)-16))
+ memset (p+n,0,sizeof(c->u)-n), n=0,
+ sha512_block (c,p,1);
+
+ memset (p+n,0,sizeof(c->u)-16-n);
+#ifdef B_ENDIAN
+ c->u.d[SHA_LBLOCK-2] = c->Nh;
+ c->u.d[SHA_LBLOCK-1] = c->Nl;
+#else
+ p[sizeof(c->u)-1] = (c->Nl)&0xFF;
+ p[sizeof(c->u)-2] = (c->Nl>>8)&0xFF;
+ p[sizeof(c->u)-3] = (c->Nl>>16)&0xFF;
+ p[sizeof(c->u)-4] = (c->Nl>>24)&0xFF;
+ p[sizeof(c->u)-5] = (c->Nl>>32)&0xFF;
+ p[sizeof(c->u)-6] = (c->Nl>>40)&0xFF;
+ p[sizeof(c->u)-7] = (c->Nl>>48)&0xFF;
+ p[sizeof(c->u)-8] = (c->Nl>>56)&0xFF;
+ p[sizeof(c->u)-9] = (c->Nh)&0xFF;
+ p[sizeof(c->u)-10] = (c->Nh>>8)&0xFF;
+ p[sizeof(c->u)-11] = (c->Nh>>16)&0xFF;
+ p[sizeof(c->u)-12] = (c->Nh>>24)&0xFF;
+ p[sizeof(c->u)-13] = (c->Nh>>32)&0xFF;
+ p[sizeof(c->u)-14] = (c->Nh>>40)&0xFF;
+ p[sizeof(c->u)-15] = (c->Nh>>48)&0xFF;
+ p[sizeof(c->u)-16] = (c->Nh>>56)&0xFF;
+#endif
+
+ sha512_block (c,p,1);
+
+ if (md==0) return 0;
+
+ for (n=0;msz>0;n++,msz-=8)
+ {
+ SHA_LONG64 t = c->h[n];
+
+ *(md++) = (t>>56)&0xFF; *(md++) = (t>>48)&0xFF;
+ *(md++) = (t>>40)&0xFF; *(md++) = (t>>32)&0xFF;
+ *(md++) = (t>>24)&0xFF; *(md++) = (t>>16)&0xFF;
+ *(md++) = (t>>8)&0xFF; *(md++) = (t)&0xFF;
+ }
+
+ return 1;
+ }
+
+int SHA384_Final (unsigned char *md,SHA512_CTX *c)
+{ return sha512_final (md,c,SHA384_DIGEST_LENGTH); }
+int SHA512_Final (unsigned char *md,SHA512_CTX *c)
+{ return sha512_final (md,c,SHA512_DIGEST_LENGTH); }
+
+int SHA512_Update (SHA512_CTX *c, const void *_data, size_t len)
+ {
+ SHA_LONG64 l;
+ unsigned char *p=c->u.p,*data=(unsigned char *)_data;
+
+ if (len==0) return 1;
+
+ l = (c->Nl+(((SHA_LONG64)len)<<3))&U64(0xffffffffffffffff);
+ if (l < c->Nl) c->Nh++;
+ if (sizeof(len)>=8) c->Nh+=(((SHA_LONG64)len)>>61);
+ c->Nl=l;
+
+ if (c->num != 0)
+ {
+ size_t n = sizeof(c->u) - c->num;
+
+ if (len < n)
+ {
+ memcpy (p+c->num,data,len), c->num += len;
+ return 1;
+ }
+ else {
+ memcpy (p+c->num,data,n), c->num = 0;
+ len-=n, data+=n;
+ sha512_block (c,p,1);
+ }
+ }
+
+ if (len >= sizeof(c->u))
+ {
+#ifndef SHA512_BLOCK_CAN_MANAGE_UNALIGNED_DATA
+ if ((int)data%sizeof(c->u.d[0]) != 0)
+ while (len >= sizeof(c->u))
+ memcpy (p,data,sizeof(c->u)),
+ sha512_block (c,p,1),
+ len -= sizeof(c->u),
+ data += sizeof(c->u);
+ else
+#endif
+ sha512_block (c,data,len/sizeof(c->u)),
+ data += len,
+ len %= sizeof(c->u),
+ data -= len;
+ }
+
+ if (len != 0) memcpy (p,data,len), c->num = (int)len;
+
+ return 1;
+ }
+
+int SHA384_Update (SHA512_CTX *c, const void *data, size_t len)
+{ return SHA512_Update (c,data,len); }
+
+void SHA512_Transform (SHA512_CTX *c, const unsigned char *data)
+{ sha512_block (c,data,1); }
+
+unsigned char *SHA384(const unsigned char *d, size_t n, unsigned char *md)
+ {
+ SHA512_CTX c;
+ static unsigned char m[SHA384_DIGEST_LENGTH];
+
+ if (md == NULL) md=m;
+ SHA384_Init(&c);
+ SHA512_Update(&c,d,n);
+ sha512_final(md,&c,sizeof(m));
+ OPENSSL_cleanse(&c,sizeof(c));
+ return(md);
+ }
+
+unsigned char *SHA512(const unsigned char *d, size_t n, unsigned char *md)
+ {
+ SHA512_CTX c;
+ static unsigned char m[SHA512_DIGEST_LENGTH];
+
+ if (md == NULL) md=m;
+ SHA512_Init(&c);
+ SHA512_Update(&c,d,n);
+ sha512_final(md,&c,sizeof(m));
+ OPENSSL_cleanse(&c,sizeof(c));
+ return(md);
+ }
+
+static const SHA_LONG64 K512[80] = {
+ U64(0x428a2f98d728ae22),U64(0x7137449123ef65cd),
+ U64(0xb5c0fbcfec4d3b2f),U64(0xe9b5dba58189dbbc),
+ U64(0x3956c25bf348b538),U64(0x59f111f1b605d019),
+ U64(0x923f82a4af194f9b),U64(0xab1c5ed5da6d8118),
+ U64(0xd807aa98a3030242),U64(0x12835b0145706fbe),
+ U64(0x243185be4ee4b28c),U64(0x550c7dc3d5ffb4e2),
+ U64(0x72be5d74f27b896f),U64(0x80deb1fe3b1696b1),
+ U64(0x9bdc06a725c71235),U64(0xc19bf174cf692694),
+ U64(0xe49b69c19ef14ad2),U64(0xefbe4786384f25e3),
+ U64(0x0fc19dc68b8cd5b5),U64(0x240ca1cc77ac9c65),
+ U64(0x2de92c6f592b0275),U64(0x4a7484aa6ea6e483),
+ U64(0x5cb0a9dcbd41fbd4),U64(0x76f988da831153b5),
+ U64(0x983e5152ee66dfab),U64(0xa831c66d2db43210),
+ U64(0xb00327c898fb213f),U64(0xbf597fc7beef0ee4),
+ U64(0xc6e00bf33da88fc2),U64(0xd5a79147930aa725),
+ U64(0x06ca6351e003826f),U64(0x142929670a0e6e70),
+ U64(0x27b70a8546d22ffc),U64(0x2e1b21385c26c926),
+ U64(0x4d2c6dfc5ac42aed),U64(0x53380d139d95b3df),
+ U64(0x650a73548baf63de),U64(0x766a0abb3c77b2a8),
+ U64(0x81c2c92e47edaee6),U64(0x92722c851482353b),
+ U64(0xa2bfe8a14cf10364),U64(0xa81a664bbc423001),
+ U64(0xc24b8b70d0f89791),U64(0xc76c51a30654be30),
+ U64(0xd192e819d6ef5218),U64(0xd69906245565a910),
+ U64(0xf40e35855771202a),U64(0x106aa07032bbd1b8),
+ U64(0x19a4c116b8d2d0c8),U64(0x1e376c085141ab53),
+ U64(0x2748774cdf8eeb99),U64(0x34b0bcb5e19b48a8),
+ U64(0x391c0cb3c5c95a63),U64(0x4ed8aa4ae3418acb),
+ U64(0x5b9cca4f7763e373),U64(0x682e6ff3d6b2b8a3),
+ U64(0x748f82ee5defb2fc),U64(0x78a5636f43172f60),
+ U64(0x84c87814a1f0ab72),U64(0x8cc702081a6439ec),
+ U64(0x90befffa23631e28),U64(0xa4506cebde82bde9),
+ U64(0xbef9a3f7b2c67915),U64(0xc67178f2e372532b),
+ U64(0xca273eceea26619c),U64(0xd186b8c721c0c207),
+ U64(0xeada7dd6cde0eb1e),U64(0xf57d4f7fee6ed178),
+ U64(0x06f067aa72176fba),U64(0x0a637dc5a2c898a6),
+ U64(0x113f9804bef90dae),U64(0x1b710b35131c471b),
+ U64(0x28db77f523047d84),U64(0x32caab7b40c72493),
+ U64(0x3c9ebe0a15c9bebc),U64(0x431d67c49c100d4c),
+ U64(0x4cc5d4becb3e42b6),U64(0x597f299cfc657e2a),
+ U64(0x5fcb6fab3ad6faec),U64(0x6c44198c4a475817) };
+
+#define B(x,j) (((SHA_LONG64)(*(((unsigned char *)(&x))+j)))<<((7-j)*8))
+#define PULL64(x) (B(x,0)|B(x,1)|B(x,2)|B(x,3)|B(x,4)|B(x,5)|B(x,6)|B(x,7))
+
+#define ROTR(x,s) (((x)>>s) | (x)<<(64-s))
+#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 sigma0(x) (ROTR((x),1) ^ ROTR((x),8) ^ ((x)>>7))
+#define sigma1(x) (ROTR((x),19) ^ ROTR((x),61) ^ ((x)>>6))
+
+#define Ch(x,y,z) (((x) & (y)) ^ ((~(x)) & (z)))
+#define Maj(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
+
+#ifdef OPENSSL_SMALL_FOOTPRINT
+
+static void sha512_block (SHA512_CTX *ctx, const void *in, size_t num)
+ {
+ const SHA_LONG64 *W=in;
+ SHA_LONG64 a,b,c,d,e,f,g,h,s0,s1,T1,T2;
+ SHA_LONG64 X[16];
+ int i;
+
+ while (num--) {
+
+ a = ctx->h[0]; b = ctx->h[1]; c = ctx->h[2]; d = ctx->h[3];
+ e = ctx->h[4]; f = ctx->h[5]; g = ctx->h[6]; h = ctx->h[7];
+
+ for (i=0;i<16;i++)
+ {
+#ifdef B_ENDIAN
+ T1 = X[i] = W[i];
+#else
+ T1 = X[i] = PULL64(W[i]);
+#endif
+ T1 += h + Sigma1(e) + Ch(e,f,g) + K512[i];
+ T2 = Sigma0(a) + Maj(a,b,c);
+ h = g; g = f; f = e; e = d + T1;
+ d = c; c = b; b = a; a = T1 + T2;
+ }
+
+ for (;i<80;i++)
+ {
+ s0 = X[(i+1)&0x0f]; s0 = sigma0(s0);
+ s1 = X[(i+14)&0x0f]; s1 = sigma1(s1);
+
+ T1 = X[i&0xf] += s0 + s1 + X[(i+9)&0xf];
+ T1 += h + Sigma1(e) + Ch(e,f,g) + K512[i];
+ T2 = Sigma0(a) + Maj(a,b,c);
+ h = g; g = f; f = e; e = d + T1;
+ d = c; c = b; b = a; a = T1 + T2;
+ }
+
+ ctx->h[0] += a; ctx->h[1] += b; ctx->h[2] += c; ctx->h[3] += d;
+ ctx->h[4] += e; ctx->h[5] += f; ctx->h[6] += g; ctx->h[7] += h;
+
+ }
+ }
+
+#else
+
+#define ROUND_00_15(i,a,b,c,d,e,f,g,h) do { \
+ T1 += h + Sigma1(e) + Ch(e,f,g) + K512[i]; \
+ h = Sigma0(a) + Maj(a,b,c); \
+ d += T1; h += T1; } while (0)
+
+#define ROUND_16_80(i,a,b,c,d,e,f,g,h,X) do { \
+ s0 = X[(i+1)&0x0f]; s0 = sigma0(s0); \
+ s1 = X[(i+14)&0x0f]; s1 = sigma1(s1); \
+ T1 = X[i&0x0f] += s0 + s1 + X[(i+9)&0x0f]; \
+ ROUND_00_15(i,a,b,c,d,e,f,g,h); } while (0)
+
+static void sha512_block (SHA512_CTX *ctx, const void *in, size_t num)
+ {
+ const SHA_LONG64 *W=in;
+ SHA_LONG64 a,b,c,d,e,f,g,h,s0,s1,T1;
+ SHA_LONG64 X[16];
+ int i;
+
+ while (num--) {
+
+ a = ctx->h[0]; b = ctx->h[1]; c = ctx->h[2]; d = ctx->h[3];
+ e = ctx->h[4]; f = ctx->h[5]; g = ctx->h[6]; h = ctx->h[7];
+
+#ifdef B_ENDIAN
+ T1 = X[0] = W[0]; ROUND_00_15(0,a,b,c,d,e,f,g,h);
+ T1 = X[1] = W[1]; ROUND_00_15(1,h,a,b,c,d,e,f,g);
+ T1 = X[2] = W[2]; ROUND_00_15(2,g,h,a,b,c,d,e,f);
+ T1 = X[3] = W[3]; ROUND_00_15(3,f,g,h,a,b,c,d,e);
+ T1 = X[4] = W[4]; ROUND_00_15(4,e,f,g,h,a,b,c,d);
+ T1 = X[5] = W[5]; ROUND_00_15(5,d,e,f,g,h,a,b,c);
+ T1 = X[6] = W[6]; ROUND_00_15(6,c,d,e,f,g,h,a,b);
+ T1 = X[7] = W[7]; ROUND_00_15(7,b,c,d,e,f,g,h,a);
+ T1 = X[8] = W[8]; ROUND_00_15(8,a,b,c,d,e,f,g,h);
+ T1 = X[9] = W[9]; ROUND_00_15(9,h,a,b,c,d,e,f,g);
+ T1 = X[10] = W[10]; ROUND_00_15(10,g,h,a,b,c,d,e,f);
+ T1 = X[11] = W[11]; ROUND_00_15(11,f,g,h,a,b,c,d,e);
+ T1 = X[12] = W[12]; ROUND_00_15(12,e,f,g,h,a,b,c,d);
+ T1 = X[13] = W[13]; ROUND_00_15(13,d,e,f,g,h,a,b,c);
+ T1 = X[14] = W[14]; ROUND_00_15(14,c,d,e,f,g,h,a,b);
+ T1 = X[15] = W[15]; ROUND_00_15(15,b,c,d,e,f,g,h,a);
+#else
+ T1 = X[0] = PULL64(W[0]); ROUND_00_15(0,a,b,c,d,e,f,g,h);
+ T1 = X[1] = PULL64(W[1]); ROUND_00_15(1,h,a,b,c,d,e,f,g);
+ T1 = X[2] = PULL64(W[2]); ROUND_00_15(2,g,h,a,b,c,d,e,f);
+ T1 = X[3] = PULL64(W[3]); ROUND_00_15(3,f,g,h,a,b,c,d,e);
+ T1 = X[4] = PULL64(W[4]); ROUND_00_15(4,e,f,g,h,a,b,c,d);
+ T1 = X[5] = PULL64(W[5]); ROUND_00_15(5,d,e,f,g,h,a,b,c);
+ T1 = X[6] = PULL64(W[6]); ROUND_00_15(6,c,d,e,f,g,h,a,b);
+ T1 = X[7] = PULL64(W[7]); ROUND_00_15(7,b,c,d,e,f,g,h,a);
+ T1 = X[8] = PULL64(W[8]); ROUND_00_15(8,a,b,c,d,e,f,g,h);
+ T1 = X[9] = PULL64(W[9]); ROUND_00_15(9,h,a,b,c,d,e,f,g);
+ T1 = X[10] = PULL64(W[10]); ROUND_00_15(10,g,h,a,b,c,d,e,f);
+ T1 = X[11] = PULL64(W[11]); ROUND_00_15(11,f,g,h,a,b,c,d,e);
+ T1 = X[12] = PULL64(W[12]); ROUND_00_15(12,e,f,g,h,a,b,c,d);
+ T1 = X[13] = PULL64(W[13]); ROUND_00_15(13,d,e,f,g,h,a,b,c);
+ T1 = X[14] = PULL64(W[14]); ROUND_00_15(14,c,d,e,f,g,h,a,b);
+ T1 = X[15] = PULL64(W[15]); ROUND_00_15(15,b,c,d,e,f,g,h,a);
+#endif
+
+ for (i=16;i<80;i+=8)
+ {
+ ROUND_16_80(i+0,a,b,c,d,e,f,g,h,X);
+ ROUND_16_80(i+1,h,a,b,c,d,e,f,g,X);
+ ROUND_16_80(i+2,g,h,a,b,c,d,e,f,X);
+ ROUND_16_80(i+3,f,g,h,a,b,c,d,e,X);
+ ROUND_16_80(i+4,e,f,g,h,a,b,c,d,X);
+ ROUND_16_80(i+5,d,e,f,g,h,a,b,c,X);
+ ROUND_16_80(i+6,c,d,e,f,g,h,a,b,X);
+ ROUND_16_80(i+7,b,c,d,e,f,g,h,a,X);
+ }
+
+ ctx->h[0] += a; ctx->h[1] += b; ctx->h[2] += c; ctx->h[3] += d;
+ ctx->h[4] += e; ctx->h[5] += f; ctx->h[6] += g; ctx->h[7] += h;
+
+ }
+ }
+
+#endif
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