AES128解密错误：javax.crypto.IllegalBlockSizeException：当使用填充密码解密时，输入必须是16的倍数

Question

当我使用AES128对文本进行加密时，它可以正常工作，然后当我尝试使用相同的加密数据和密钥进行解密时，它会给我一个

  

javax.crypto.IlliegalBlockSizeException：输入必须是多个的   16用填充密码解密时

错误这只发生在我之前添加IvParameterSpec的修复

之后

AES128 Java类：

package xcrypt;

    import java.security.SecureRandom;

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

    public class AES128 
    {

        byte[] iv = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
        IvParameterSpec ivSpec = new IvParameterSpec(iv);

        private  byte[] getRawKey(byte[] seed) throws Exception 
        {
            KeyGenerator kgen = KeyGenerator.getInstance("AES");
            SecureRandom sr = SecureRandom.getInstance("SHA1PRNG");
            sr.setSeed(seed);
            kgen.init(128, sr); // 192 and 256 bits may not be available
            SecretKey skey = kgen.generateKey();
            byte[] raw = skey.getEncoded();
            return raw;
        }

        public  byte[] encrypt(byte[] raw, byte[] clear) throws Exception 
        {
            SecretKeySpec skeySpec = new SecretKeySpec(getRawKey(raw), "AES");
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
            cipher.init(Cipher.ENCRYPT_MODE, skeySpec, ivSpec);
            byte[] encrypted = cipher.doFinal(clear);
            return encrypted;
        }

        public  byte[] decrypt(byte[] raw, byte[] encrypted) throws Exception 
        {

            SecretKeySpec skeySpec = new SecretKeySpec(getRawKey(raw), "AES");
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
            cipher.init(Cipher.DECRYPT_MODE, skeySpec, ivSpec);
            byte[] decrypted = cipher.doFinal(encrypted);
            return decrypted;
        }
    }

这里是调用方法的地方（主类）：

public byte[] Encryption_AES128(byte[] plain  , byte[] key) throws Exception
    {
        AES128 aes128 = new AES128();
        return aes128.encrypt(key, plain);
    }
    public byte[] Decryption_AES128(byte[] cipher  , byte[] key) throws Exception
    {
        AES128 aes128 = new AES128();
        return aes128.decrypt(key, cipher);
    }