ad6dad0996
In previous patches, extern was mechanically removed from function declarations without care to formatting, causing parameter lists to be misaligned. Manually format changed sections such that the parameter lists should be realigned. Viewing this patch with 'git diff -w' should produce no output. Signed-off-by: Denton Liu <liu.denton@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
73 lines
1.4 KiB
C
73 lines
1.4 KiB
C
/*
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* SHA-1 implementation.
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*
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* Copyright (C) 2005 Paul Mackerras <paulus@samba.org>
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*
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* This version assumes we are running on a big-endian machine.
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* It calls an external sha1_core() to process blocks of 64 bytes.
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*/
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#include <stdio.h>
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#include <string.h>
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#include "sha1.h"
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void ppc_sha1_core(uint32_t *hash, const unsigned char *p,
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unsigned int nblocks);
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int ppc_SHA1_Init(ppc_SHA_CTX *c)
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{
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c->hash[0] = 0x67452301;
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c->hash[1] = 0xEFCDAB89;
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c->hash[2] = 0x98BADCFE;
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c->hash[3] = 0x10325476;
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c->hash[4] = 0xC3D2E1F0;
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c->len = 0;
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c->cnt = 0;
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return 0;
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}
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int ppc_SHA1_Update(ppc_SHA_CTX *c, const void *ptr, unsigned long n)
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{
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unsigned long nb;
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const unsigned char *p = ptr;
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c->len += (uint64_t) n << 3;
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while (n != 0) {
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if (c->cnt || n < 64) {
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nb = 64 - c->cnt;
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if (nb > n)
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nb = n;
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memcpy(&c->buf.b[c->cnt], p, nb);
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if ((c->cnt += nb) == 64) {
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ppc_sha1_core(c->hash, c->buf.b, 1);
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c->cnt = 0;
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}
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} else {
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nb = n >> 6;
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ppc_sha1_core(c->hash, p, nb);
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nb <<= 6;
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}
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n -= nb;
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p += nb;
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}
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return 0;
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}
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int ppc_SHA1_Final(unsigned char *hash, ppc_SHA_CTX *c)
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{
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unsigned int cnt = c->cnt;
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c->buf.b[cnt++] = 0x80;
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if (cnt > 56) {
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if (cnt < 64)
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memset(&c->buf.b[cnt], 0, 64 - cnt);
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ppc_sha1_core(c->hash, c->buf.b, 1);
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cnt = 0;
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}
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if (cnt < 56)
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memset(&c->buf.b[cnt], 0, 56 - cnt);
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c->buf.l[7] = c->len;
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ppc_sha1_core(c->hash, c->buf.b, 1);
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memcpy(hash, c->hash, 20);
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return 0;
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}
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