SHA clean-up and (LP64) tune-up.
[openssl.git] / crypto / sha / sha1dgst.c
index 66e885d..141daf0 100644 (file)
  * [including the GNU Public Licence.]
  */
 
-#include <stdio.h>
-#include <string.h>
+#if !defined(NO_SHA1) && !defined(NO_SHA)
+
 #undef  SHA_0
 #define SHA_1
-#include <openssl/sha.h>
-#include "sha_locl.h"
+
 #include <openssl/opensslv.h>
 
-#ifndef NO_SHA1
 char *SHA1_version="SHA1" OPENSSL_VERSION_PTEXT;
 
-/* Implemented from SHA-1 document - The Secure Hash Algorithm
- */
-
-#define INIT_DATA_h0 0x67452301UL
-#define INIT_DATA_h1 0xefcdab89UL
-#define INIT_DATA_h2 0x98badcfeUL
-#define INIT_DATA_h3 0x10325476UL
-#define INIT_DATA_h4 0xc3d2e1f0UL
-
-#define K_00_19        0x5a827999UL
-#define K_20_39 0x6ed9eba1UL
-#define K_40_59 0x8f1bbcdcUL
-#define K_60_79 0xca62c1d6UL
-
-#ifdef SHA1_ASM
-   void sha1_block_x86(SHA_CTX *c, register SHA_LONG *p, int num);
-#  define sha1_block(c,p,n) sha1_block_x86((c),(p),(n)*SHA_CBLOCK)
-#else
-   static void sha1_block(SHA_CTX *c, register SHA_LONG *p, int num);
-#endif
-
-#if !defined(B_ENDIAN) && defined(SHA1_ASM)
-#  define      M_c2nl          c2l
-#  define      M_p_c2nl        p_c2l
-#  define      M_c2nl_p        c2l_p
-#  define      M_p_c2nl_p      p_c2l_p
-#  define      M_nl2c          l2c
-#else
-#  define      M_c2nl          c2nl
-#  define      M_p_c2nl        p_c2nl
-#  define      M_c2nl_p        c2nl_p
-#  define      M_p_c2nl_p      p_c2nl_p
-#  define      M_nl2c          nl2c
-#endif
-
-void SHA1_Init(SHA_CTX *c)
-       {
-       c->h0=INIT_DATA_h0;
-       c->h1=INIT_DATA_h1;
-       c->h2=INIT_DATA_h2;
-       c->h3=INIT_DATA_h3;
-       c->h4=INIT_DATA_h4;
-       c->Nl=0;
-       c->Nh=0;
-       c->num=0;
-       }
-
-void SHA1_Update(SHA_CTX *c, register const unsigned char *data,
-            unsigned long len)
-       {
-       register SHA_LONG *p;
-       int ew,ec,sw,sc;
-       SHA_LONG l;
-
-       if (len == 0) return;
-
-       l=(c->Nl+(len<<3))&0xffffffffL;
-       if (l < c->Nl) /* overflow */
-               c->Nh++;
-       c->Nh+=(len>>29);
-       c->Nl=l;
-
-       if (c->num != 0)
-               {
-               p=c->data;
-               sw=c->num>>2;
-               sc=c->num&0x03;
-
-               if ((c->num+len) >= SHA_CBLOCK)
-                       {
-                       l= p[sw];
-                       M_p_c2nl(data,l,sc);
-                       p[sw++]=l;
-                       for (; sw<SHA_LBLOCK; sw++)
-                               {
-                               M_c2nl(data,l);
-                               p[sw]=l;
-                               }
-                       len-=(SHA_CBLOCK-c->num);
-
-                       sha1_block(c,p,1);
-                       c->num=0;
-                       /* drop through and do the rest */
-                       }
-               else
-                       {
-                       c->num+=(int)len;
-                       if ((sc+len) < 4) /* ugly, add char's to a word */
-                               {
-                               l= p[sw];
-                               M_p_c2nl_p(data,l,sc,len);
-                               p[sw]=l;
-                               }
-                       else
-                               {
-                               ew=(c->num>>2);
-                               ec=(c->num&0x03);
-                               l= p[sw];
-                               M_p_c2nl(data,l,sc);
-                               p[sw++]=l;
-                               for (; sw < ew; sw++)
-                                       { M_c2nl(data,l); p[sw]=l; }
-                               if (ec)
-                                       {
-                                       M_c2nl_p(data,l,ec);
-                                       p[sw]=l;
-                                       }
-                               }
-                       return;
-                       }
-               }
-       /* We can only do the following code for assember, the reason
-        * being that the sha1_block 'C' version changes the values
-        * in the 'data' array.  The assember code avoids this and
-        * copies it to a local array.  I should be able to do this for
-        * the C version as well....
-        */
-#if SHA_LONG_LOG2==2
-#if defined(B_ENDIAN) || defined(SHA1_ASM)
-       if ((((unsigned long)data)%sizeof(SHA_LONG)) == 0)
-               {
-               sw=len/SHA_CBLOCK;
-               if (sw)
-                       {
-                       sha1_block(c,(SHA_LONG *)data,sw);
-                       sw*=SHA_CBLOCK;
-                       data+=sw;
-                       len-=sw;
-                       }
-               }
-#endif
-#endif
-       /* we now can process the input data in blocks of SHA_CBLOCK
-        * chars and save the leftovers to c->data. */
-       p=c->data;
-       while (len >= SHA_CBLOCK)
-               {
-#if SHA_LONG_LOG2==2
-#if defined(B_ENDIAN) || defined(SHA1_ASM)
-#define SHA_NO_TAIL_CODE
-               /*
-                * Basically we get here only when data happens
-                * to be unaligned.
-                */
-               if (p != (SHA_LONG *)data)
-                       memcpy(p,data,SHA_CBLOCK);
-               data+=SHA_CBLOCK;
-               sha1_block(c,p=c->data,1);
-               len-=SHA_CBLOCK;
-#elif defined(L_ENDIAN)
-#define BE_COPY(dst,src,i)     {                               \
-                               l = ((SHA_LONG *)src)[i];       \
-                               Endian_Reverse32(l);            \
-                               dst[i] = l;                     \
-                               }
-               if ((((unsigned long)data)%sizeof(SHA_LONG)) == 0)
-                       {
-                       for (sw=(SHA_LBLOCK/4); sw; sw--)
-                               {
-                               BE_COPY(p,data,0);
-                               BE_COPY(p,data,1);
-                               BE_COPY(p,data,2);
-                               BE_COPY(p,data,3);
-                               p+=4;
-                               data += 4*sizeof(SHA_LONG);
-                               }
-                       sha1_block(c,p=c->data,1);
-                       len-=SHA_CBLOCK;
-                       continue;
-                       }
-#endif
-#endif
-#ifndef SHA_NO_TAIL_CODE
-               /*
-                * In addition to "sizeof(SHA_LONG)!= 4" case the
-                * following code covers unaligned access cases on
-                * little-endian machines.
-                *                      <appro@fy.chalmers.se>
-                */
-               p=c->data;
-               for (sw=(SHA_LBLOCK/4); sw; sw--)
-                       {
-                       M_c2nl(data,l); p[0]=l;
-                       M_c2nl(data,l); p[1]=l;
-                       M_c2nl(data,l); p[2]=l;
-                       M_c2nl(data,l); p[3]=l;
-                       p+=4;
-                       }
-               p=c->data;
-               sha1_block(c,p,1);
-               len-=SHA_CBLOCK;
-#endif
-               }
-       ec=(int)len;
-       c->num=ec;
-       ew=(ec>>2);
-       ec&=0x03;
-
-       for (sw=0; sw < ew; sw++)
-               { M_c2nl(data,l); p[sw]=l; }
-       M_c2nl_p(data,l,ec);
-       p[sw]=l;
-       }
-
-void SHA1_Transform(SHA_CTX *c, unsigned char *b)
-       {
-       SHA_LONG p[SHA_LBLOCK];
-
-#if SHA_LONG_LOG2==2
-#if defined(B_ENDIAN) || defined(SHA1_ASM)
-       memcpy(p,b,SHA_CBLOCK);
-       sha1_block(c,p,1);
-       return;
-#elif defined(L_ENDIAN)
-       if (((unsigned long)b%sizeof(SHA_LONG)) == 0)
-               {
-               SHA_LONG *q;
-               int i;
-
-               q=p;
-               for (i=(SHA_LBLOCK/4); i; i--)
-                       {
-                       unsigned long l;
-                       BE_COPY(q,b,0); /* BE_COPY was defined above */
-                       BE_COPY(q,b,1);
-                       BE_COPY(q,b,2);
-                       BE_COPY(q,b,3);
-                       q+=4;
-                       b+=4*sizeof(SHA_LONG);
-                       }
-               sha1_block(c,p,1);
-               return;
-               }
-#endif
-#endif
-#ifndef SHA_NO_TAIL_CODE /* defined above, see comment */
-               {
-               SHA_LONG *q;
-               int i;
-       
-               q=p;
-               for (i=(SHA_LBLOCK/4); i; i--)
-                       {
-                       SHA_LONG l;
-                       c2nl(b,l); *(q++)=l;
-                       c2nl(b,l); *(q++)=l;
-                       c2nl(b,l); *(q++)=l;
-                       c2nl(b,l); *(q++)=l; 
-                       } 
-               sha1_block(c,p,1);
-               }
-#endif
-       }
-
-#ifndef SHA1_ASM
-static void sha1_block(SHA_CTX *c, register SHA_LONG *W, int num)
-       {
-       register SHA_LONG A,B,C,D,E,T;
-       SHA_LONG X[SHA_LBLOCK];
-
-       A=c->h0;
-       B=c->h1;
-       C=c->h2;
-       D=c->h3;
-       E=c->h4;
-
-       for (;;)
-               {
-       BODY_00_15( 0,A,B,C,D,E,T,W);
-       BODY_00_15( 1,T,A,B,C,D,E,W);
-       BODY_00_15( 2,E,T,A,B,C,D,W);
-       BODY_00_15( 3,D,E,T,A,B,C,W);
-       BODY_00_15( 4,C,D,E,T,A,B,W);
-       BODY_00_15( 5,B,C,D,E,T,A,W);
-       BODY_00_15( 6,A,B,C,D,E,T,W);
-       BODY_00_15( 7,T,A,B,C,D,E,W);
-       BODY_00_15( 8,E,T,A,B,C,D,W);
-       BODY_00_15( 9,D,E,T,A,B,C,W);
-       BODY_00_15(10,C,D,E,T,A,B,W);
-       BODY_00_15(11,B,C,D,E,T,A,W);
-       BODY_00_15(12,A,B,C,D,E,T,W);
-       BODY_00_15(13,T,A,B,C,D,E,W);
-       BODY_00_15(14,E,T,A,B,C,D,W);
-       BODY_00_15(15,D,E,T,A,B,C,W);
-       BODY_16_19(16,C,D,E,T,A,B,W,W,W,W);
-       BODY_16_19(17,B,C,D,E,T,A,W,W,W,W);
-       BODY_16_19(18,A,B,C,D,E,T,W,W,W,W);
-       BODY_16_19(19,T,A,B,C,D,E,W,W,W,X);
-
-       BODY_20_31(20,E,T,A,B,C,D,W,W,W,X);
-       BODY_20_31(21,D,E,T,A,B,C,W,W,W,X);
-       BODY_20_31(22,C,D,E,T,A,B,W,W,W,X);
-       BODY_20_31(23,B,C,D,E,T,A,W,W,W,X);
-       BODY_20_31(24,A,B,C,D,E,T,W,W,X,X);
-       BODY_20_31(25,T,A,B,C,D,E,W,W,X,X);
-       BODY_20_31(26,E,T,A,B,C,D,W,W,X,X);
-       BODY_20_31(27,D,E,T,A,B,C,W,W,X,X);
-       BODY_20_31(28,C,D,E,T,A,B,W,W,X,X);
-       BODY_20_31(29,B,C,D,E,T,A,W,W,X,X);
-       BODY_20_31(30,A,B,C,D,E,T,W,X,X,X);
-       BODY_20_31(31,T,A,B,C,D,E,W,X,X,X);
-       BODY_32_39(32,E,T,A,B,C,D,X);
-       BODY_32_39(33,D,E,T,A,B,C,X);
-       BODY_32_39(34,C,D,E,T,A,B,X);
-       BODY_32_39(35,B,C,D,E,T,A,X);
-       BODY_32_39(36,A,B,C,D,E,T,X);
-       BODY_32_39(37,T,A,B,C,D,E,X);
-       BODY_32_39(38,E,T,A,B,C,D,X);
-       BODY_32_39(39,D,E,T,A,B,C,X);
-
-       BODY_40_59(40,C,D,E,T,A,B,X);
-       BODY_40_59(41,B,C,D,E,T,A,X);
-       BODY_40_59(42,A,B,C,D,E,T,X);
-       BODY_40_59(43,T,A,B,C,D,E,X);
-       BODY_40_59(44,E,T,A,B,C,D,X);
-       BODY_40_59(45,D,E,T,A,B,C,X);
-       BODY_40_59(46,C,D,E,T,A,B,X);
-       BODY_40_59(47,B,C,D,E,T,A,X);
-       BODY_40_59(48,A,B,C,D,E,T,X);
-       BODY_40_59(49,T,A,B,C,D,E,X);
-       BODY_40_59(50,E,T,A,B,C,D,X);
-       BODY_40_59(51,D,E,T,A,B,C,X);
-       BODY_40_59(52,C,D,E,T,A,B,X);
-       BODY_40_59(53,B,C,D,E,T,A,X);
-       BODY_40_59(54,A,B,C,D,E,T,X);
-       BODY_40_59(55,T,A,B,C,D,E,X);
-       BODY_40_59(56,E,T,A,B,C,D,X);
-       BODY_40_59(57,D,E,T,A,B,C,X);
-       BODY_40_59(58,C,D,E,T,A,B,X);
-       BODY_40_59(59,B,C,D,E,T,A,X);
-
-       BODY_60_79(60,A,B,C,D,E,T,X);
-       BODY_60_79(61,T,A,B,C,D,E,X);
-       BODY_60_79(62,E,T,A,B,C,D,X);
-       BODY_60_79(63,D,E,T,A,B,C,X);
-       BODY_60_79(64,C,D,E,T,A,B,X);
-       BODY_60_79(65,B,C,D,E,T,A,X);
-       BODY_60_79(66,A,B,C,D,E,T,X);
-       BODY_60_79(67,T,A,B,C,D,E,X);
-       BODY_60_79(68,E,T,A,B,C,D,X);
-       BODY_60_79(69,D,E,T,A,B,C,X);
-       BODY_60_79(70,C,D,E,T,A,B,X);
-       BODY_60_79(71,B,C,D,E,T,A,X);
-       BODY_60_79(72,A,B,C,D,E,T,X);
-       BODY_60_79(73,T,A,B,C,D,E,X);
-       BODY_60_79(74,E,T,A,B,C,D,X);
-       BODY_60_79(75,D,E,T,A,B,C,X);
-       BODY_60_79(76,C,D,E,T,A,B,X);
-       BODY_60_79(77,B,C,D,E,T,A,X);
-       BODY_60_79(78,A,B,C,D,E,T,X);
-       BODY_60_79(79,T,A,B,C,D,E,X);
-       
-       c->h0=(c->h0+E)&0xffffffffL; 
-       c->h1=(c->h1+T)&0xffffffffL;
-       c->h2=(c->h2+A)&0xffffffffL;
-       c->h3=(c->h3+B)&0xffffffffL;
-       c->h4=(c->h4+C)&0xffffffffL;
-
-       if (--num <= 0) break;
-
-       A=c->h0;
-       B=c->h1;
-       C=c->h2;
-       D=c->h3;
-       E=c->h4;
-
-       W+=SHA_LBLOCK;  /* Note! This can happen only when sizeof(SHA_LONG)
-                        * is 4. Whenever it's not the actual case this
-                        * function is never called with num larger than 1
-                        * and we never advance down here.
-                        *                      <appro@fy.chalmers.se>
-                        */
-               }
-       }
-#endif
-
-void SHA1_Final(unsigned char *md, SHA_CTX *c)
-       {
-       register int i,j;
-       register SHA_LONG l;
-       register SHA_LONG *p;
-       static unsigned char end[4]={0x80,0x00,0x00,0x00};
-       unsigned char *cp=end;
-
-       /* c->num should definitly have room for at least one more byte. */
-       p=c->data;
-       j=c->num;
-       i=j>>2;
-#ifdef PURIFY
-       if ((j&0x03) == 0) p[i]=0;
-#endif
-       l=p[i];
-       M_p_c2nl(cp,l,j&0x03);
-       p[i]=l;
-       i++;
-       /* i is the next 'undefined word' */
-       if (c->num >= SHA_LAST_BLOCK)
-               {
-               for (; i<SHA_LBLOCK; i++)
-                       p[i]=0;
-               sha1_block(c,p,1);
-               i=0;
-               }
-       for (; i<(SHA_LBLOCK-2); i++)
-               p[i]=0;
-       p[SHA_LBLOCK-2]=c->Nh;
-       p[SHA_LBLOCK-1]=c->Nl;
-#if SHA_LONG_LOG2==2
-#if !defined(B_ENDIAN) && defined(SHA1_ASM)
-       Endian_Reverse32(p[SHA_LBLOCK-2]);
-       Endian_Reverse32(p[SHA_LBLOCK-1]);
-#endif
-#endif
-       sha1_block(c,p,1);
-       cp=md;
-       l=c->h0; nl2c(l,cp);
-       l=c->h1; nl2c(l,cp);
-       l=c->h2; nl2c(l,cp);
-       l=c->h3; nl2c(l,cp);
-       l=c->h4; nl2c(l,cp);
+#include "sha_locl.h"
 
-       c->num=0;
-       /* sha_block may be leaving some stuff on the stack
-        * but I'm not worried :-)
-       memset((void *)c,0,sizeof(SHA_CTX));
-        */
-       }
 #endif