private void testRSA_ECB_NoPadding_GetIV_Success(String provider) throws Exception {
        final PublicKey pubKey = (PublicKey) getEncryptKey("RSA");

        Cipher c = Cipher.getInstance("RSA/ECB/NoPadding", provider);
        assertNull("ECB mode has no IV and should be null", c.getIV());

        c.init(Cipher.ENCRYPT_MODE, pubKey);

        assertNull("ECB mode has no IV and should be null", c.getIV());
    }
openssl rsautl -raw -sign -inkey rsa.key | recode ../x1 | sed 's/0x/(byte) 0x/g'
common/src/test/java/org/conscrypt/javax/crypto/CipherTest.java