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#include <tomcrypt_test.h>
#ifdef LTC_MDSA
int dsa_test(void)
{
unsigned char msg[16], out[1024], out2[1024];
unsigned long x, y;
int stat1, stat2;
dsa_key key, key2;
/* make a random key */
DO(dsa_make_key(&yarrow_prng, find_prng("yarrow"), 20, 128, &key));
/* verify it */
DO(dsa_verify_key(&key, &stat1));
if (stat1 == 0) { fprintf(stderr, "dsa_verify_key "); return 1; }
/* encrypt a message */
for (x = 0; x < 16; x++) { msg[x] = x; }
x = sizeof(out);
DO(dsa_encrypt_key(msg, 16, out, &x, &yarrow_prng, find_prng("yarrow"), find_hash("sha1"), &key));
/* decrypt */
y = sizeof(out2);
DO(dsa_decrypt_key(out, x, out2, &y, &key));
if (y != 16 || memcmp(out2, msg, 16)) {
fprintf(stderr, "dsa_decrypt failed, y == %lu\n", y);
return 1;
}
/* sign the message */
x = sizeof(out);
DO(dsa_sign_hash(msg, sizeof(msg), out, &x, &yarrow_prng, find_prng("yarrow"), &key));
/* verify it once */
DO(dsa_verify_hash(out, x, msg, sizeof(msg), &stat1, &key));
/* Modify and verify again */
msg[0] ^= 1;
DO(dsa_verify_hash(out, x, msg, sizeof(msg), &stat2, &key));
msg[0] ^= 1;
if (!(stat1 == 1 && stat2 == 0)) { fprintf(stderr, "dsa_verify %d %d", stat1, stat2); return 1; }
/* test exporting it */
x = sizeof(out2);
DO(dsa_export(out2, &x, PK_PRIVATE, &key));
DO(dsa_import(out2, x, &key2));
/* verify a signature with it */
DO(dsa_verify_hash(out, x, msg, sizeof(msg), &stat1, &key2));
if (stat1 == 0) { fprintf(stderr, "dsa_verify (import private) %d ", stat1); return 1; }
dsa_free(&key2);
/* export as public now */
x = sizeof(out2);
DO(dsa_export(out2, &x, PK_PUBLIC, &key));
DO(dsa_import(out2, x, &key2));
/* verify a signature with it */
DO(dsa_verify_hash(out, x, msg, sizeof(msg), &stat1, &key2));
if (stat1 == 0) { fprintf(stderr, "dsa_verify (import public) %d ", stat1); return 1; }
dsa_free(&key2);
dsa_free(&key);
return 0;
}
#else
int dsa_test(void)
{
fprintf(stderr, "NOP");
return 0;
}
#endif
/* $Source$ */
/* $Revision$ */
/* $Date$ */
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