Question

我有以下密码（已加密）和密钥

密码= bbSOvqxMRpO004qYLD / REQ ==

key = VUzwYCbBBcEQxu6jvGrwnvAYCD2d7FpQ

以下代码返回未正确填充对于解密的密码，我不确定为什么。在看了几个例子后，我似乎正在关注它们。

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.codec.binary.Base64;

public abstract class AESDecrypter {

    public static String decrypt(String encryptedString, String key) {
        try {
            SecretKeySpec keySpec = null;
            Cipher decryptCipher = null;
            //----
            SecretKeySpec keySpec = null;
        Cipher decryptCipher = null;
        //----
        keySpec = new SecretKeySpec(key.getBytes("UTF-8"), "AES");
        System.out.println(keySpec.toString());
        decryptCipher = Cipher.getInstance("AES");
        decryptCipher.init(Cipher.DECRYPT_MODE, keySpec);
        System.out.println("End decrypt");
        return new String(decryptCipher.doFinal(Base64.decodeBase64(encryptedString.getBytes("UTF-8"))), "UTF-8");
    }
}

返回

Given final block not properly padded
javax.crypto.BadPaddingException: Given final block not properly padded
        at com.sun.crypto.provider.SunJCE_f.b(DashoA13*..)
        at com.sun.crypto.provider.SunJCE_f.b(DashoA13*..)
        at com.sun.crypto.provider.AESCipher.engineDoFinal(DashoA13*..)
        at javax.crypto.Cipher.doFinal(DashoA13*..)
        at edu.uga.ovpr.decrypter.AESDecrypter.decrypt(AESDecrypter.java:35)
        at edu.uga.ovpr.filetransferrer.FTPSConnection.<init>(FTPSConnection.java:44)
        at edu.uga.ovpr.filetransferrer.FileTransferrer.getConnection(FileTransferrer.java:285)
        at edu.uga.ovpr.filetransferrer.FileTransferrer.doTransfer(FileTransferrer.java:221)
        at edu.uga.ovpr.filetransferrer.FileTransferrer.main(FileTransferrer.java:128)

Answer 1

使用bouncycastle lib
最简单＆amp;使用更多密码模式的AES更快：http://bouncycastle.org

AES Decrypter没有正确填充

1 个答案: