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)
context->count[0] = context->count[1] = 0;
}
-#define rol(x, nr) (((x) << ((uint32)(nr))) | ((x) >> (32 - (uint32)(nr))))
-
-#define GET_WORD(cp) ((uint32)(uint8)(cp)[0]) << 24 \
- | ((uint32)(uint8)(cp)[1] << 16) \
- | ((uint32)(uint8)(cp)[2] << 8) \
- | ((uint32)(uint8)(cp)[3])
+#define rol(x, nr) silc_rol(x, nr)
-#define blk0(i) (W[i] = GET_WORD(data))
+#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))
#define f1(x,y,z) (z^(x&(y^z)))
#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);
-void SHA1Transform(uint32 *state, const unsigned char *data)
+void SHA1Transform(SilcUInt32 *state, const unsigned char *data)
{
- uint32 W[16];
-
+ SilcUInt32 W[16];
+
/* Copy context->state[] to working vars */
- uint32 a = state[0];
- uint32 b = state[1];
- uint32 c = state[2];
- uint32 d = state[3];
- uint32 e = state[4];
-
+ 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);
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. */
-void SHA1Update(SHA1_CTX* context, unsigned char* data, uint32 len)
+void SHA1Update(SHA1_CTX* context, unsigned char* data, SilcUInt32 len)
{
- uint32 i, j;
+ SilcUInt32 i, j;
j = (context->count[0] >> 3) & 63;
if ((context->count[0] += len << 3) < (len << 3)) context->count[1]++;
void SHA1Final(unsigned char digest[20], SHA1_CTX* context)
{
- uint32 i, j;
+ SilcUInt32 i, j;
unsigned char finalcount[8];
-
+
for (i = 0; i < 8; i++) {
- finalcount[i] = (unsigned char)((context->count[(i >= 4 ? 0 : 1)]
+ 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);