+/* Modified to work on various platforms. -Pekka */
/*
SHA-1 in C
By Steve Reid <steve@edmweb.com>
100% Public Domain
*/
-#include "silcincludes.h"
+#include "silc.h"
#include "sha1_internal.h"
#include "sha1.h"
-/*
+/*
* SILC Hash API for SHA1
*/
SILC_HASH_API_UPDATE(sha1)
{
- SHA1Update((SHA1_CTX *)context, data, len);
+ SHA1Update((SHA1_CTX *)context, (unsigned char *)data, len);
}
SILC_HASH_API_FINAL(sha1)
return sizeof(SHA1_CTX);
}
-#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
-
-/* blk0() and blk() perform the initial expand. */
-/* I got the idea of expanding during the round function from SSLeay */
-#ifdef LITTLE_ENDIAN
-#define blk0(i) (block->l[i] = (rol(block->l[i],24)&0xFF00FF00) \
- |(rol(block->l[i],8)&0x00FF00FF))
-#else
-#define blk0(i) block->l[i]
-#endif
-#define blk(i) (block->l[i&15] = rol(block->l[(i+13)&15]^block->l[(i+8)&15] \
- ^block->l[(i+2)&15]^block->l[i&15],1))
-
-/* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */
-#define R0(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk0(i)+0x5A827999+rol(v,5);w=rol(w,30);
-#define R1(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30);
-#define R2(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);
-#define R3(v,w,x,y,z,i) z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30);
-#define R4(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);
-
-
-/* Hash a single 512-bit block. This is the core of the algorithm. */
-
-void SHA1Transform(uint32 state[5], unsigned char buffer[64])
+void SHA1Init(SHA1_CTX* context)
{
-uint32 a, b, c, d, e;
-typedef union {
- unsigned char c[64];
- uint32 l[16];
-} CHAR64LONG16;
-CHAR64LONG16* block;
-static unsigned char workspace[64];
- block = (CHAR64LONG16*)workspace;
- memcpy(block, buffer, 64);
- /* Copy context->state[] to working vars */
- a = state[0];
- b = state[1];
- c = state[2];
- d = state[3];
- 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;
+ /* SHA1 initialization constants */
+ context->state[0] = 0x67452301L;
+ context->state[1] = 0xEFCDAB89L;
+ context->state[2] = 0x98BADCFEL;
+ context->state[3] = 0x10325476L;
+ context->state[4] = 0xC3D2E1F0L;
+ context->count[0] = context->count[1] = 0;
}
+#define rol(x, nr) silc_rol(x, nr)
-/* SHA1Init - Initialize new context */
+#define blk0(i) (W[i] = SILC_GET_WORD(data))
+#define blk1(i) (W[i&15] = rol(W[(i+13)&15]^W[(i+8)&15]^W[(i+2)&15]^W[i&15],1))
-void SHA1Init(SHA1_CTX* context)
-{
- /* SHA1 initialization constants */
- context->state[0] = 0x67452301;
- context->state[1] = 0xEFCDAB89;
- context->state[2] = 0x98BADCFE;
- context->state[3] = 0x10325476;
- context->state[4] = 0xC3D2E1F0;
- context->count[0] = context->count[1] = 0;
-}
+#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+rol(v,5);w=rol(w,30);data+=4;
+#define R1(v,w,x,y,z,i) z+=f1(w,x,y)+blk1(i)+0x5A827999+rol(v,5);w=rol(w,30);
+#define R2(v,w,x,y,z,i) z+=f2(w,x,y)+blk1(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);
+#define R3(v,w,x,y,z,i) z+=f3(w,x,y)+blk1(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30);
+#define R4(v,w,x,y,z,i) z+=f4(w,x,y)+blk1(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);
-/* Run your data through this. */
-
-void SHA1Update(SHA1_CTX* context, unsigned char* data, uint32 len)
+void SHA1Transform(SilcUInt32 *state, const unsigned char *data)
{
-uint32 i, j;
-
- j = (context->count[0] >> 3) & 63;
- if ((context->count[0] += len << 3) < (len << 3)) context->count[1]++;
- context->count[1] += (len >> 29);
- if ((j + len) > 63) {
- memcpy(&context->buffer[j], data, (i = 64-j));
- SHA1Transform(context->state, context->buffer);
- for ( ; i + 63 < len; i += 64) {
- SHA1Transform(context->state, &data[i]);
- }
- j = 0;
- }
- else i = 0;
- memcpy(&context->buffer[j], &data[i], len - i);
+ SilcUInt32 W[16];
+
+ /* Copy context->state[] to working vars */
+ SilcUInt32 a = state[0];
+ SilcUInt32 b = state[1];
+ SilcUInt32 c = state[2];
+ SilcUInt32 d = state[3];
+ SilcUInt32 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));
}
+/* Run your data through this. */
-/* Add padding and return the message digest. */
-
-void SHA1Final(unsigned char digest[20], SHA1_CTX* context)
+void SHA1Update(SHA1_CTX* context, unsigned char* data, SilcUInt32 len)
{
-uint32 i, j;
-unsigned char finalcount[8];
+ SilcUInt32 i, j;
- for (i = 0; i < 8; i++) {
- finalcount[i] = (unsigned char)((context->count[(i >= 4 ? 0 : 1)]
- >> ((3-(i & 3)) * 8) ) & 255); /* Endian independent */
- }
- SHA1Update(context, (unsigned char *)"\200", 1);
- while ((context->count[0] & 504) != 448) {
- SHA1Update(context, (unsigned char *)"\0", 1);
- }
- SHA1Update(context, finalcount, 8); /* Should cause a SHA1Transform() */
- for (i = 0; i < 20; i++) {
- digest[i] = (unsigned char)
- ((context->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255);
- }
- /* Wipe variables */
- i = j = 0;
- memset(context->buffer, 0, 64);
- memset(context->state, 0, 20);
- memset(context->count, 0, 8);
- memset(finalcount, 0, 8);
+ j = (context->count[0] >> 3) & 63;
+ if ((context->count[0] += len << 3) < (len << 3)) context->count[1]++;
+ context->count[1] += (len >> 29);
+ if ((j + len) > 63) {
+ memcpy(&context->buffer[j], data, (i = 64-j));
SHA1Transform(context->state, context->buffer);
+ for ( ; i + 63 < len; i += 64) {
+ SHA1Transform(context->state, &data[i]);
+ }
+ j = 0;
+ }
+ else i = 0;
+ memcpy(&context->buffer[j], &data[i], len - i);
}
+/* Add padding and return the message digest. */
-/*************************************************************/
-
-/* Test Code */
-
-#if 0
-
-int main(int argc, char** argv)
+void SHA1Final(unsigned char digest[20], SHA1_CTX* context)
{
-int i, j;
-SHA1_CTX context;
-unsigned char digest[20], buffer[16384];
-FILE* file;
-
- if (argc > 2) {
- puts("Public domain SHA-1 implementation - by Steve Reid <steve@edmweb.com>");
- puts("Produces the SHA-1 hash of a file, or stdin if no file is specified.");
- exit(0);
- }
- if (argc < 2) {
- file = stdin;
- }
- else {
- if (!(file = fopen(argv[1], "rb"))) {
- fputs("Unable to open file.", stderr);
- exit(-1);
- }
- }
- SHA1Init(&context);
- while (!feof(file)) { /* note: what if ferror(file) */
- i = fread(buffer, 1, 16384, file);
- SHA1Update(&context, buffer, i);
- }
- SHA1Final(digest, &context);
- fclose(file);
- for (i = 0; i < 5; i++) {
- for (j = 0; j < 4; j++) {
- printf("%02X", digest[i*4+j]);
- }
- putchar(' ');
- }
- putchar('\n');
- exit(0);
+ SilcUInt32 i, j;
+ unsigned char finalcount[8];
+
+ for (i = 0; i < 8; i++) {
+ finalcount[i] = (unsigned char)((context->count[(i >= 4 ? 0 : 1)]
+ >> ((3 - (i & 3)) * 8)) & 255);
+ }
+ SHA1Update(context, (unsigned char *)"\200", 1);
+ while ((context->count[0] & 504) != 448) {
+ SHA1Update(context, (unsigned char *)"\0", 1);
+ }
+
+ SHA1Update(context, finalcount, 8); /* Should cause a SHA1Transform() */
+ for (i = 0; i < 20; i++) {
+ digest[i] = (unsigned char)
+ ((context->state[i>>2] >> ((3 - (i & 3)) * 8)) & 255);
+ }
+
+ /* Wipe variables */
+ i = j = 0;
+ memset(context->buffer, 0, 64);
+ memset(context->state, 0, 20);
+ memset(context->count, 0, 8);
+ memset(finalcount, 0, 8);
+ SHA1Transform(context->state, context->buffer);
}
-
-#endif
projects / silc.git / blobdiff