斯卡拉的這個加密和解密代碼的等價物是什麼？

Question

$KEY = "Your KEY"; 
$IV = "Your IV"; 

function addpadding($string, $blocksize = 32) 
{ 
    $len = strlen($string); 
    $pad = $blocksize - ($len % $blocksize); 
    $string .= str_repeat(chr($pad), $pad); 
    return $string; 
} 

function strippadding($string) 
{ 
    $slast = ord(substr($string, -1)); 
    $slastc = chr($slast); 
    $pcheck = substr($string, -$slast); 
    if(preg_match("/$slastc{".$slast."}/", $string)){ 
     $string = substr($string, 0, strlen($string)-$slast); 
     return $string; 
    } else { 
     return false; 
    } 
} 

function encrypt($string = "") 
{ 
    global $KEY,$IV; 
    $key = base64_decode($KEY); 
    $iv = base64_decode($IV); 
    return base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, addpadding($string), MCRYPT_MODE_CBC, $iv)); 
} 

function decrypt($string = "") 
{ 
    global $KEY,$IV; 
    $key = base64_decode($KEY); 
    $iv = base64_decode($IV); 
    $string = base64_decode($string); 
    return strippadding(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, $string, MCRYPT_MODE_CBC, $iv)); 
} 

編輯

我在尋找確切的實施不只是庫的引用，所以我自己張貼的答案。我在Scala編碼，但起初我要求Java增加儘快獲得答案的機會，因此實現採用Scala語言。

Answer 1

感謝的意見，這裏是Scala實現它的工作原理完全一樣，上面的PHP代碼：

import org.apache.commons.codec.binary.Base64 
import org.bouncycastle.crypto.paddings.PaddedBufferedBlockCipher 
import org.bouncycastle.crypto.modes.CBCBlockCipher 
import org.bouncycastle.crypto.engines.RijndaelEngine 
import org.bouncycastle.crypto.paddings.PKCS7Padding 
import org.bouncycastle.crypto.params._ 

class EncryptionUtil(keyBase64: String, ivBase64: String) { 
    private val keyBytes = Base64.decodeBase64(keyBase64) 
    private val ivBytes = Base64.decodeBase64(ivBase64) 

    def encrypt(message: String): String = { 
    val cipher = new PaddedBufferedBlockCipher(new CBCBlockCipher(new RijndaelEngine(256)), new PKCS7Padding()); 
    val keySize = keyBytes.length; 
    val ivAndKey = new ParametersWithIV(new KeyParameter(keyBytes, 0, keySize), ivBytes, 0, keySize); 
    cipher.init(true, ivAndKey); 
    val messageBytes = message.getBytes("UTF-8") 
    val encrypted = new Array[Byte](cipher.getOutputSize(messageBytes.length)); 
    val oLen = cipher.processBytes(messageBytes, 0, messageBytes.length, encrypted, 0); 
    cipher.doFinal(encrypted, oLen); 
    Base64.encodeBase64String(encrypted) 
    } 

    def decrypt(inputBase64: String): String = { 
    val cipher = new PaddedBufferedBlockCipher(new CBCBlockCipher(new RijndaelEngine(256)), new PKCS7Padding()); 
    val keySize = keyBytes.length; 
    val ivAndKey = new ParametersWithIV(new KeyParameter(keyBytes, 0, keySize), ivBytes, 0, keySize); 
    cipher.init(false, ivAndKey); 
    val messageBytes = Base64.decodeBase64(inputBase64) 
    val decrypted = new Array[Byte](cipher.getOutputSize(messageBytes.length)); 
    val oLen = cipher.processBytes(messageBytes, 0, messageBytes.length, decrypted, 0); 
    cipher.doFinal(decrypted, oLen); 

    val zeroTerminationIndex = decrypted.indexOf(0) 
    new String(decrypted, 0, zeroTerminationIndex, "UTF-8") 
    } 
} 

object EncryptionUtil { 
    def apply(keyBase64: String, ivBase64: String) = new EncryptionUtil(keyBase64, ivBase64) 
} 

它使用可以被添加到build.sbt BouncyCastle的：

libraryDependencies += "org.bouncycastle" % "bcprov-jdk15on" % "1.52"