keysched3_t
keysched3_t *ksch = (keysched3_t *)cookie;
encryption_ks = ((keysched3_t *)ks)->ksch_encrypt;
decryption_ks = ((keysched3_t *)ks)->ksch_decrypt;
encryption_ks = ((keysched3_t *)ks)->ksch_encrypt;
decryption_ks = ((keysched3_t *)ks)->ksch_decrypt;
size = sizeof (keysched3_t);