121 lines
2.8 KiB
C
121 lines
2.8 KiB
C
#include <tomcrypt_test.h>
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#ifdef LTC_MDH
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#ifdef DH4096
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#define KEYSIZE 4096
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#else
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#define KEYSIZE 2048
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#endif
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int dh_test (void)
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{
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unsigned char buf[3][4096], ch;
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unsigned long x, y, z;
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int stat, stat2;
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dh_key usera, userb;
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if (register_prng(&yarrow_desc) == -1) {
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printf("Error registering yarrow PRNG\n");
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exit(-1);
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}
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if (register_hash(&md5_desc) == -1) {
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printf("Error registering md5 hash\n");
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exit(-1);
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}
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DO(dh_compat_test());
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/* make up two keys */
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DO(dh_make_key (&yarrow_prng, find_prng ("yarrow"), KEYSIZE/8, &usera));
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DO(dh_make_key (&yarrow_prng, find_prng ("yarrow"), KEYSIZE/8, &userb));
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/* make the shared secret */
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x = KEYSIZE;
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DO(dh_shared_secret (&usera, &userb, buf[0], &x));
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y = KEYSIZE;
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DO(dh_shared_secret (&userb, &usera, buf[1], &y));
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if (y != x) {
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fprintf(stderr, "DH Shared keys are not same size.\n");
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dh_free (&usera);
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dh_free (&userb);
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return 1;
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}
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if (memcmp (buf[0], buf[1], x)) {
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fprintf(stderr, "DH Shared keys not same contents.\n");
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dh_free (&usera);
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dh_free (&userb);
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return 1;
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}
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/* now export userb */
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y = KEYSIZE;
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DO(dh_export (buf[1], &y, PK_PUBLIC, &userb));
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dh_free (&userb);
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/* import and make the shared secret again */
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DO(dh_import (buf[1], y, &userb));
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z = KEYSIZE;
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DO(dh_shared_secret (&usera, &userb, buf[2], &z));
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dh_free (&usera);
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dh_free (&userb);
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if (z != x) {
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fprintf(stderr, "failed. Size don't match?\n");
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return 1;
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}
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if (memcmp (buf[0], buf[2], x)) {
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fprintf(stderr, "Failed. Content didn't match.\n");
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return 1;
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}
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/* test encrypt_key */
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dh_make_key (&yarrow_prng, find_prng ("yarrow"), KEYSIZE/8, &usera);
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for (ch = 0; ch < 16; ch++) {
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buf[0][ch] = ch;
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}
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y = sizeof (buf[1]);
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DO(dh_encrypt_key (buf[0], 16, buf[1], &y, &yarrow_prng, find_prng ("yarrow"), find_hash ("md5"), &usera));
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zeromem (buf[0], sizeof (buf[0]));
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x = sizeof (buf[0]);
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DO(dh_decrypt_key (buf[1], y, buf[0], &x, &usera));
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if (x != 16) {
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fprintf(stderr, "Failed (length)\n");
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dh_free (&usera);
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return 1;
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}
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for (ch = 0; ch < 16; ch++)
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if (buf[0][ch] != ch) {
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fprintf(stderr, "Failed (contents)\n");
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dh_free (&usera);
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return 1;
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}
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/* test sign_hash */
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for (ch = 0; ch < 16; ch++) {
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buf[0][ch] = ch;
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}
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x = sizeof (buf[1]);
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DO(dh_sign_hash (buf[0], 16, buf[1], &x, &yarrow_prng, find_prng ("yarrow"), &usera));
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DO(dh_verify_hash (buf[1], x, buf[0], 16, &stat, &usera));
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buf[0][0] ^= 1;
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DO(dh_verify_hash (buf[1], x, buf[0], 16, &stat2, &usera));
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dh_free (&usera);
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if (!(stat == 1 && stat2 == 0)) {
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fprintf(stderr, "dh_sign/verify_hash %d %d", stat, stat2);
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return 1;
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}
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return 0;
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}
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#else
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int dh_test(void)
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{
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return CRYPT_NOP;
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}
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#endif
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