Lines Matching refs:key
15 Katja key generation, Tom St Denis
21 Create a Katja key
24 @param size The size of the modulus (key size) desired (octets)
25 @param key [out] Destination of a newly created private key pair
28 int katja_make_key(prng_state *prng, int wprng, int size, katja_key *key)
33 LTC_ARGCHK(key != NULL);
61 /* make key */
62 if ((err = mp_init_multi(&key->d, &key->N, &key->dQ, &key->dP,
63 &key->qP, &key->p, &key->q, &key->pq, NULL)) != CRYPT_OK) {
68 if ((err = mp_copy( p, key->p)) != CRYPT_OK) { goto error2; }
69 if ((err = mp_copy( q, key->q)) != CRYPT_OK) { goto error2; }
70 if ((err = mp_mul(key->p, key->q, key->pq)) != CRYPT_OK) { goto error2; } /* tmp1 = pq */
71 if ((err = mp_mul(key->pq, key->p, key->N)) != CRYPT_OK) { goto error2; } /* N = p^2q */
74 if ((err = mp_lcm(tmp1, tmp2, key->d)) != CRYPT_OK) { goto error2; } /* tmp1 = lcd(p-1,q-1) */
75 if ((err = mp_invmod( key->N, key->d, key->d)) != CRYPT_OK) { goto error2; } /* key->d = 1/N mod pq */
79 if ((err = mp_mod( key->d, tmp1, key->dP)) != CRYPT_OK) { goto error2; } /* dP = d mod p-1 */
80 if ((err = mp_mod( key->d, tmp2, key->dQ)) != CRYPT_OK) { goto error2; } /* dQ = d mod q-1 */
81 if ((err = mp_invmod( q, p, key->qP)) != CRYPT_OK) { goto error2; } /* qP = 1/q mod p */
83 /* set key type (in this case it's CRT optimized) */
84 key->type = PK_PRIVATE;
90 mp_clear_multi( key->d, key->N, key->dQ, key->dP, key->qP, key->p, key->q, key->pq, NULL);
