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/* $Id: md5.c 646 2005-12-01 22:07:11Z bruce $ */
#include <sys/types.h>
#include <stdlib.h>
#include <string.h>
#include "sysdeps.h"
#include "hmac.h"
#include "md5.h"
struct midstate
{
uint32 A, B, C, D;
};
static void extract(const void* statep, void* midstatep)
{
const struct md5_ctx* ctx = statep;
struct midstate* mid = midstatep;
mid->A = ctx->A;
mid->B = ctx->B;
mid->C = ctx->C;
mid->D = ctx->D;
}
static void inject(void* statep, const void* midstatep)
{
struct md5_ctx* ctx = statep;
const struct midstate* mid = midstatep;
ctx->A = mid->A;
ctx->B = mid->B;
ctx->C = mid->C;
ctx->D = mid->D;
ctx->total[0] = 64;
ctx->total[1] = 0;
ctx->buflen = 0;
}
static void update(void* ctx,
const unsigned char* bytes,
unsigned long len)
{
md5_process_bytes(bytes, len, ctx);
}
const struct hmac_control_block hmac_md5 = {
.state_size = sizeof(struct md5_ctx),
.block_size = 64,
.digest_size = 128/8,
.midstate_size = sizeof(struct midstate),
.init = (hmac_init_fn)md5_init_ctx,
.update = update,
.finalize = (hmac_finalize_fn)md5_finish_ctx,
.extract = extract,
.inject = inject,
};
#ifdef SELFTEST_MAIN
#include <stdio.h>
#include "str.h"
static void HMACTest(const char* key, const char* data)
{
const str key_str = { (char*)key, strlen(key), 0 };
const str data_str = { (char*)data, strlen(data), 0 };
unsigned char digest[128/8];
unsigned i;
hmac(&hmac_md5, &key_str, &data_str, digest);
printf("HMAC (%d,%d) = ", key_str.len, data_str.len);
for (i = 0; i < sizeof digest; ++i) printf("%02x", digest[i]);
printf("\n");
}
MAIN
{
/* Test vectors from RFC 2104 */
HMACTest("\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b",
"Hi There");
HMACTest("Jefe", "what do ya want for nothing?");
HMACTest("\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa",
"\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd"
"\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd"
"\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd"
"\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd"
"\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd");
}
#endif
#ifdef SELFTEST_EXP
HMAC (16,8) = 9294727a3638bb1c13f48ef8158bfc9d
HMAC (4,28) = 750c783e6ab0b503eaa86e310a5db738
HMAC (16,50) = 56be34521d144c88dbb8c733f0e8b3f6
#endif
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