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@ -1,4 +1,4 @@ |
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/* $OpenBSD: sha1.c,v 1.12 2003/07/21 20:37:08 millert Exp $ */ |
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/* $OpenBSD: sha1.c,v 1.13 2004/03/31 23:41:53 brad Exp $ */ |
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/* |
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* SHA-1 in C |
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@ -15,7 +15,7 @@ |
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*/ |
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#if defined(LIBC_SCCS) && !defined(lint) |
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static char rcsid[] = "$OpenBSD: sha1.c,v 1.12 2003/07/21 20:37:08 millert Exp $"; |
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static char rcsid[] = "$OpenBSD: sha1.c,v 1.13 2004/03/31 23:41:53 brad Exp $"; |
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#endif /* LIBC_SCCS and not lint */ |
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#define SHA1HANDSOFF /* Copies data before messing with it. */ |
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@ -48,64 +48,6 @@ static char rcsid[] = "$OpenBSD: sha1.c,v 1.12 2003/07/21 20:37:08 millert Exp $ |
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#define R3(v,w,x,y,z,i) z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30); |
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#define R4(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30); |
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typedef union { |
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u_char c[64]; |
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u_int l[16]; |
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} CHAR64LONG16; |
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#ifdef __sparc_v9__ |
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static void do_R01(u_int32_t *a, u_int32_t *b, u_int32_t *c, u_int32_t *d, u_int32_t *e, CHAR64LONG16 *); |
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static void do_R2(u_int32_t *a, u_int32_t *b, u_int32_t *c, u_int32_t *d, u_int32_t *e, CHAR64LONG16 *); |
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static void do_R3(u_int32_t *a, u_int32_t *b, u_int32_t *c, u_int32_t *d, u_int32_t *e, CHAR64LONG16 *); |
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static void do_R4(u_int32_t *a, u_int32_t *b, u_int32_t *c, u_int32_t *d, u_int32_t *e, CHAR64LONG16 *); |
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#define nR0(v,w,x,y,z,i) R0(*v,*w,*x,*y,*z,i) |
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#define nR1(v,w,x,y,z,i) R1(*v,*w,*x,*y,*z,i) |
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#define nR2(v,w,x,y,z,i) R2(*v,*w,*x,*y,*z,i) |
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#define nR3(v,w,x,y,z,i) R3(*v,*w,*x,*y,*z,i) |
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#define nR4(v,w,x,y,z,i) R4(*v,*w,*x,*y,*z,i) |
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static void |
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do_R01(u_int32_t *a, u_int32_t *b, u_int32_t *c, u_int32_t *d, u_int32_t *e, CHAR64LONG16 *block) |
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{ |
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nR0(a,b,c,d,e, 0); nR0(e,a,b,c,d, 1); nR0(d,e,a,b,c, 2); nR0(c,d,e,a,b, 3); |
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nR0(b,c,d,e,a, 4); nR0(a,b,c,d,e, 5); nR0(e,a,b,c,d, 6); nR0(d,e,a,b,c, 7); |
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nR0(c,d,e,a,b, 8); nR0(b,c,d,e,a, 9); nR0(a,b,c,d,e,10); nR0(e,a,b,c,d,11); |
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nR0(d,e,a,b,c,12); nR0(c,d,e,a,b,13); nR0(b,c,d,e,a,14); nR0(a,b,c,d,e,15); |
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nR1(e,a,b,c,d,16); nR1(d,e,a,b,c,17); nR1(c,d,e,a,b,18); nR1(b,c,d,e,a,19); |
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} |
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static void |
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do_R2(u_int32_t *a, u_int32_t *b, u_int32_t *c, u_int32_t *d, u_int32_t *e, CHAR64LONG16 *block) |
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{ |
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nR2(a,b,c,d,e,20); nR2(e,a,b,c,d,21); nR2(d,e,a,b,c,22); nR2(c,d,e,a,b,23); |
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nR2(b,c,d,e,a,24); nR2(a,b,c,d,e,25); nR2(e,a,b,c,d,26); nR2(d,e,a,b,c,27); |
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nR2(c,d,e,a,b,28); nR2(b,c,d,e,a,29); nR2(a,b,c,d,e,30); nR2(e,a,b,c,d,31); |
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nR2(d,e,a,b,c,32); nR2(c,d,e,a,b,33); nR2(b,c,d,e,a,34); nR2(a,b,c,d,e,35); |
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nR2(e,a,b,c,d,36); nR2(d,e,a,b,c,37); nR2(c,d,e,a,b,38); nR2(b,c,d,e,a,39); |
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} |
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static void |
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do_R3(u_int32_t *a, u_int32_t *b, u_int32_t *c, u_int32_t *d, u_int32_t *e, CHAR64LONG16 *block) |
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{ |
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nR3(a,b,c,d,e,40); nR3(e,a,b,c,d,41); nR3(d,e,a,b,c,42); nR3(c,d,e,a,b,43); |
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nR3(b,c,d,e,a,44); nR3(a,b,c,d,e,45); nR3(e,a,b,c,d,46); nR3(d,e,a,b,c,47); |
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nR3(c,d,e,a,b,48); nR3(b,c,d,e,a,49); nR3(a,b,c,d,e,50); nR3(e,a,b,c,d,51); |
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nR3(d,e,a,b,c,52); nR3(c,d,e,a,b,53); nR3(b,c,d,e,a,54); nR3(a,b,c,d,e,55); |
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nR3(e,a,b,c,d,56); nR3(d,e,a,b,c,57); nR3(c,d,e,a,b,58); nR3(b,c,d,e,a,59); |
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} |
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static void |
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do_R4(u_int32_t *a, u_int32_t *b, u_int32_t *c, u_int32_t *d, u_int32_t *e, CHAR64LONG16 *block) |
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{ |
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nR4(a,b,c,d,e,60); nR4(e,a,b,c,d,61); nR4(d,e,a,b,c,62); nR4(c,d,e,a,b,63); |
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nR4(b,c,d,e,a,64); nR4(a,b,c,d,e,65); nR4(e,a,b,c,d,66); nR4(d,e,a,b,c,67); |
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nR4(c,d,e,a,b,68); nR4(b,c,d,e,a,69); nR4(a,b,c,d,e,70); nR4(e,a,b,c,d,71); |
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nR4(d,e,a,b,c,72); nR4(c,d,e,a,b,73); nR4(b,c,d,e,a,74); nR4(a,b,c,d,e,75); |
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nR4(e,a,b,c,d,76); nR4(d,e,a,b,c,77); nR4(c,d,e,a,b,78); nR4(b,c,d,e,a,79); |
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} |
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#endif |
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/* |
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* Hash a single 512-bit block. This is the core of the algorithm. |
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*/ |
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@ -113,11 +55,15 @@ void |
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SHA1Transform(u_int32_t state[5], const u_char buffer[64]) |
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{ |
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u_int32_t a, b, c, d, e; |
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typedef union { |
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u_char c[64]; |
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u_int l[16]; |
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} CHAR64LONG16; |
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CHAR64LONG16 *block; |
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#ifdef SHA1HANDSOFF |
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CHAR64LONG16 workspace; |
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block = &workspace; |
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u_char workspace[64]; |
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block = (CHAR64LONG16 *)workspace; |
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(void)memcpy(block, buffer, 64); |
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#else |
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block = (CHAR64LONG16 *)buffer; |
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@ -130,12 +76,6 @@ SHA1Transform(u_int32_t state[5], const u_char buffer[64]) |
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d = state[3]; |
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e = state[4]; |
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#ifdef __sparc_v9__ |
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do_R01(&a, &b, &c, &d, &e, block); |
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do_R2(&a, &b, &c, &d, &e, block); |
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do_R3(&a, &b, &c, &d, &e, block); |
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do_R4(&a, &b, &c, &d, &e, block); |
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#else |
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/* 4 rounds of 20 operations each. Loop unrolled. */ |
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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); |
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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); |
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@ -157,7 +97,6 @@ SHA1Transform(u_int32_t state[5], const u_char buffer[64]) |
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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); |
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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); |
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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); |
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#endif |
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/* Add the working vars back into context.state[] */ |
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state[0] += a; |
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