crypto/des/str2key.c

100 void DES_string_to_2keys(const char *str, DES_cblock *key1, DES_cblock *key2)
107     memset(key2, 0, 8);
112             (*key2)[i] = (*key1)[i] = (str[i] << 1);
117                 (*key2)[i % 8] ^= (str[i] << 1);
129                 (*key2)[i % 8] ^= (j << 1);
137                 (*key2)[7 - (i % 8)] ^= j;
141         memcpy(key2, key1, 8);
144     DES_set_odd_parity(key2);
154     if (DES_is_weak_key(key2))
155         (*key2)[7] ^= 0xF0;
156     DES_set_key(key2, &ks);
158     DES_set_key_unchecked(key2, &ks);
160     DES_cbc_cksum((const unsigned char *)str, key2, length, &ks, key2);
163     DES_set_odd_parity(key2);