c09015dd04
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
241 lines
7.4 KiB
C
241 lines
7.4 KiB
C
|
|
/* from valgrind tests */
|
|
|
|
/* ================ sha1.c ================ */
|
|
/*
|
|
SHA-1 in C
|
|
By Steve Reid <steve@edmweb.com>
|
|
100% Public Domain
|
|
|
|
Test Vectors (from FIPS PUB 180-1)
|
|
"abc"
|
|
A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D
|
|
"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"
|
|
84983E44 1C3BD26E BAAE4AA1 F95129E5 E54670F1
|
|
A million repetitions of "a"
|
|
34AA973C D4C4DAA4 F61EEB2B DBAD2731 6534016F
|
|
*/
|
|
|
|
/* #define LITTLE_ENDIAN * This should be #define'd already, if true. */
|
|
/* #define SHA1HANDSOFF * Copies data before messing with it. */
|
|
|
|
#define SHA1HANDSOFF
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdint.h>
|
|
|
|
/* ================ sha1.h ================ */
|
|
/*
|
|
SHA-1 in C
|
|
By Steve Reid <steve@edmweb.com>
|
|
100% Public Domain
|
|
*/
|
|
|
|
typedef struct {
|
|
uint32_t state[5];
|
|
uint32_t count[2];
|
|
unsigned char buffer[64];
|
|
} SHA1_CTX;
|
|
|
|
void SHA1Transform(uint32_t state[5], const unsigned char buffer[64]);
|
|
void SHA1Init(SHA1_CTX* context);
|
|
void SHA1Update(SHA1_CTX* context, const unsigned char* data, uint32_t len);
|
|
void SHA1Final(unsigned char digest[20], SHA1_CTX* context);
|
|
/* ================ end of sha1.h ================ */
|
|
#include <endian.h>
|
|
|
|
#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 */
|
|
#if BYTE_ORDER == LITTLE_ENDIAN
|
|
#define blk0(i) (block->l[i] = (rol(block->l[i],24)&0xFF00FF00) \
|
|
|(rol(block->l[i],8)&0x00FF00FF))
|
|
#elif BYTE_ORDER == BIG_ENDIAN
|
|
#define blk0(i) block->l[i]
|
|
#else
|
|
#error "Endianness not defined!"
|
|
#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_t state[5], const unsigned char buffer[64])
|
|
{
|
|
uint32_t a, b, c, d, e;
|
|
typedef union {
|
|
unsigned char c[64];
|
|
uint32_t l[16];
|
|
} CHAR64LONG16;
|
|
#ifdef SHA1HANDSOFF
|
|
CHAR64LONG16 block[1]; /* use array to appear as a pointer */
|
|
memcpy(block, buffer, 64);
|
|
#else
|
|
/* The following had better never be used because it causes the
|
|
* pointer-to-const buffer to be cast into a pointer to non-const.
|
|
* And the result is written through. I threw a "const" in, hoping
|
|
* this will cause a diagnostic.
|
|
*/
|
|
CHAR64LONG16* block = (const CHAR64LONG16*)buffer;
|
|
#endif
|
|
/* 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;
|
|
#ifdef SHA1HANDSOFF
|
|
memset(block, '\0', sizeof(block));
|
|
#endif
|
|
}
|
|
|
|
|
|
/* SHA1Init - Initialize new context */
|
|
|
|
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;
|
|
}
|
|
|
|
|
|
/* Run your data through this. */
|
|
|
|
void SHA1Update(SHA1_CTX* context, const unsigned char* data, uint32_t len)
|
|
{
|
|
uint32_t i;
|
|
uint32_t j;
|
|
|
|
j = context->count[0];
|
|
if ((context->count[0] += len << 3) < j)
|
|
context->count[1]++;
|
|
context->count[1] += (len>>29);
|
|
j = (j >> 3) & 63;
|
|
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. */
|
|
|
|
void SHA1Final(unsigned char digest[20], SHA1_CTX* context)
|
|
{
|
|
unsigned i;
|
|
unsigned char finalcount[8];
|
|
unsigned char c;
|
|
|
|
#if 0 /* untested "improvement" by DHR */
|
|
/* Convert context->count to a sequence of bytes
|
|
* in finalcount. Second element first, but
|
|
* big-endian order within element.
|
|
* But we do it all backwards.
|
|
*/
|
|
unsigned char *fcp = &finalcount[8];
|
|
|
|
for (i = 0; i < 2; i++)
|
|
{
|
|
uint32_t t = context->count[i];
|
|
int j;
|
|
|
|
for (j = 0; j < 4; t >>= 8, j++)
|
|
*--fcp = (unsigned char) t;
|
|
}
|
|
#else
|
|
for (i = 0; i < 8; i++) {
|
|
finalcount[i] = (unsigned char)((context->count[(i >= 4 ? 0 : 1)]
|
|
>> ((3-(i & 3)) * 8) ) & 255); /* Endian independent */
|
|
}
|
|
#endif
|
|
c = 0200;
|
|
SHA1Update(context, &c, 1);
|
|
while ((context->count[0] & 504) != 448) {
|
|
c = 0000;
|
|
SHA1Update(context, &c, 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 */
|
|
memset(context, '\0', sizeof(*context));
|
|
memset(&finalcount, '\0', sizeof(finalcount));
|
|
}
|
|
/* ================ end of sha1.c ================ */
|
|
|
|
#define BUFSIZE 4096
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
SHA1_CTX ctx;
|
|
unsigned char hash[20], buf[BUFSIZE];
|
|
int i;
|
|
|
|
for(i=0;i<BUFSIZE;i++)
|
|
buf[i] = i;
|
|
|
|
SHA1Init(&ctx);
|
|
for(i=0;i<1000;i++)
|
|
SHA1Update(&ctx, buf, BUFSIZE);
|
|
SHA1Final(hash, &ctx);
|
|
|
|
printf("SHA1=");
|
|
for(i=0;i<20;i++)
|
|
printf("%02x", hash[i]);
|
|
printf("\n");
|
|
return 0;
|
|
}
|