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