OpenSSL的“AES-256-CFB”的Java名称是什么？

Question

我正在使用OpenSSL的aes-256-cfb算法（来自NodeJS的加密模块）。

openssl/NodeJS cipherText:
05c2aad7bac42ed0846e9a52ce73df9ff9d7ff914feea49fed27d55ad690782a43107914c1b307ec92753227728c95b8e59c546d

Java cipherText: 
05C2AAD7BAC42ED084739340D47CEC9F03D8E94AC7B1E11A56A6654F76AD2C8076BCA162303E39B44D043732E98FDD28C52D

null

OpenSSL/NodeJS：

var assert = require('assert');
var crypto = require('crypto');

describe('crypto', function() {
  it('should work', function () {
    var plainText = new Buffer('a secret plainText which has more than sixteen bytes');
    var key = new Buffer('fedcba9876543210fedcba9876543210fedcba9876543210fedcba9876543210', 'hex');
    var iv = new Buffer('0123456789abcdef0123456789abcdef', 'hex');      

    var cipher = crypto.createCipheriv('aes-256-cfb', key, iv);
    var decipher = crypto.createDecipheriv('aes-256-cfb', key, iv);

    var cipherText = cipher.update(plainText);
    cipher.final(); // no need to use this value with cfb, it seems to always be empty?

    assert.equal(plainText.length, cipherText.length);

    assert.equal('05c2aad7bac42ed0846e9a52ce73df9ff9d7ff914feea49fed27d55ad690782a43107914c1b307ec92753227728c95b8e59c546d', cipherText.toString('hex'));

    var deciphered = decipher.update(cipherText);
    decipher.final(); // no need to use value this with cfb, it seems to always be empty?

    assert.equal(plainText, deciphered.toString('utf8'));
  });
});

Java/Android：

import android.test.InstrumentationTestCase;

import com.google.protobuf.ByteString;
import bit.Twiddling;

import java.security.AlgorithmParameters;

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;

public class CryptoTest extends InstrumentationTestCase {

    public void test_encrypt_and_decrypt() throws Exception {
        byte[] plainText = "a secret message which has more than sixteen bytes".getBytes();
        byte[] key = Twiddling.hexStringBEToBytes("fedcba9876543210fedcba9876543210fedcba9876543210fedcba9876543210");
        byte[] iv = Twiddling.hexStringBEToBytes("0123456789abcdef0123456789abcdef");//0123456789abcdef0123456789abcdef");

        SecretKeySpec aesSecret = new SecretKeySpec(key, "AES");
        Cipher cipher = Cipher.getInstance("AES/CFB/NoPadding");
        Cipher decipher = Cipher.getInstance("AES/CFB/NoPadding");
        IvParameterSpec ivps = new IvParameterSpec(iv);
        assertEquals(16, iv.length);

        cipher.init(Cipher.ENCRYPT_MODE, aesSecret, ivps);
        byte[] cipherText = cipher.doFinal(plainText);

        assertEquals(plainText.length, cipherText.length);
        assertEquals("05C2AAD7BAC42ED084739340D47CEC9F03D8E94AC7B1E11A56A6654F76AD2C8076BCA162303E39B44D043732E98FDD28C52D", Twiddling.bytesToHexStringBE(cipherText));

        decipher.init(Cipher.DECRYPT_MODE, aesSecret, ivps);
        byte[] deciphered = decipher.doFinal(cipherText);

        assertEquals(new String(plainText), new String(deciphered));
    }
}

Answer 1

这是一个查找/替换错误--两个明文在前9个字节之后不同。

Java对OpenSSL的AES-256-Cfb的名称是AES/Cfb/nopadding。