DECRYPT
if (!TEST_true(BIO_set_cipher(b, cipher, key, iv, DECRYPT)))
if (!TEST_true(BIO_set_cipher(b, cipher, key, iv, DECRYPT))) {
if (!TEST_true(BIO_set_cipher(b, cipher, key, iv, DECRYPT))) {
|| !TEST_true(EVP_CipherInit_ex(ctx, cipher, NULL, KEY, IV, DECRYPT))
((mode & DES_DIRMASK) == DES_ENCRYPT) ? ENCRYPT : DECRYPT;