javaphp对应的AESCBCPKCS5Padding模式 加密解密

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java/php对应的AES/CBC/PKCS5Padding模式 加密解密

目前一个系统（java开发的）上将加密的用户名和密码传递到另一个系统（php开发的），约定了java使用AES加密，php在获得加密的用户名和密码后，进行解密。 java代码：

package com.wondersgroupmon.decrypt.utils; import javax.crypto.Cipher; import javax.crypto.spec.IvParameterSpec; import javax.crypto.spec.SecretKeySpec; /** * Created by smart on 2015/8/17. */ public class Encrypt { // 密匙 private static String DEFAULTKEY = "你的16位秘钥"; // 偏移量 private static String IVPARAMETER = "0102030405060708"; // 加密 public static String execute(String sSrc) throws Exception { if (sSrc == null) { return null; } return encrypt(sSrc, DEFAULTKEY); } private static String encrypt(byte[] sSrc, String sKey) throws Exception { if (sKey == null || sSrc == null) { return null; } return byte2hex(encryptByte(sSrc, sKey)).toLowerCase(); } private static String encrypt(String sSrc, String sKey) throws Exception { if (sKey == null || sSrc == null) { return null; } return encrypt(sSrc.getBytes(), sKey); } private static byte[] encryptByte(byte[] sSrc, String sKey) throws Exception { if (sKey == null || sSrc == null) { return null; } // 判断Key是否为16位 if (sKey.length() != 16) { return null; } byte[] raw = sKey.getBytes(); SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES"); Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); IvParameterSpec iv = new IvParameterSpec(IVPARAMETER.getBytes()); cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv); return cipher.doFinal(sSrc); } private static byte[] hex2byte(String strhex) { if (strhex == null) { return null; } int l = strhex.length(); if (l % 2 == 1) { return null; } byte[] b = new byte[l / 2]; for (int i = 0; i != l / 2; i++) { b[i] = (byte) Integer.parseInt(strhex.substring(i * 2, i * 2 + 2), 16); } return b; } private static String byte2hex(byte[] b) { String hs = ""; String stmp = ""; for (int n = 0; n < b.length; n++) { stmp = (java.lang.Integer.toHexString(b[n] & 0XFF)); if (stmp.length() == 1) { hs = hs + "0" + stmp; } else { hs = hs + stmp; } } return hs.toUpperCase(); } public static void main(String[] arg) { try { System.out.println(execute("hujunyu")); } catch (Exception e) { e.printStackTrace(); } } } package com.wondersgroupmon.decrypt.utils; import javax.crypto.Cipher; import javax.crypto.spec.IvParameterSpec; import javax.crypto.spec.SecretKeySpec; /** * Created by smart on 2015/8/17. */ public class Decrypt { //密匙 private static String DEFAULTKEY = "你的16位秘钥"; //偏移量 private static String IVPARAMETER = "0102030405060708"; public static String execute(String sSrc) throws Exception { if ( sSrc==null) { return null; } return decrypt(sSrc, DEFAULTKEY); } // 解密 private static String decrypt(byte[] sSrc, String sKey) throws Exception { if (sKey == null || sSrc==null) { return null; } return new String( decryptByte( sSrc, sKey)); } private static byte[] decryptByte(byte[] sSrc, String sKey) throws Exception { try { // 判断Key是否正确 if (sKey == null || sSrc==null) { return null; } // 判断Key是否为16位 if (sKey.length() != 16) { return null; } byte[] raw = sKey.getBytes();// "ASCII" SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES"); Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); IvParameterSpec iv = new IvParameterSpec(IVPARAMETER.getBytes()); cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv); try { return cipher.doFinal(sSrc); } catch (Exception e) { return null; } } catch (Exception ex) { return null; } } private static String decrypt(String sSrc, String sKey) throws Exception { if (sKey == null || sSrc==null) { return null; } return decrypt( hex2byte(sSrc), sKey); } private static byte[] hex2byte(String strhex) { if (strhex == null) { return null; } int l = strhex.length(); if (l % 2 == 1) { return null; } byte[] b = new byte[l / 2]; for (int i = 0; i != l / 2; i++) { b[i] = (byte) Integer.parseInt(strhex.substring(i * 2, i * 2 + 2), 16); } return b; } private static String byte2hex(byte[] b) { String hs = ""; String stmp = ""; for (int n = 0; n < b.length; n++) { stmp = (java.lang.Integer.toHexString(b[n] & 0XFF)); if (stmp.length() == 1) { hs = hs + "0" + stmp; } else { hs = hs + stmp; } } return hs.toUpperCase(); } public static void main(String[] arg) { try { System.out.println(execute("55a280077e82db68806ce77fe9602a7c")); } catch (Exception e) { e.printStackTrace(); } } }

php代码：

<?php /** * java/php对应的AES/CBC/PKCS5Padding模式 加密解密 */ class Crypt { /** * [$cipher 加密模式] * @var [type] */ private $cipher = MCRYPT_RIJNDAEL_128; private $mode = MCRYPT_MODE_CBC; /** * [$key 密匙] * @var string */ private $secret_key = '你的16位秘钥'; /** * [$iv 偏移量] * @var string */ private $iv = '0102030405060708'; function setCipher($cipher=''){ $cipher && $this->cipher = $cipher; } function setMode($mode=''){ $mode && $this->mode = $mode; } function setSecretKey($secret_key=''){ $secret_key && $this->secret_key = $secret_key; } function setIv($iv=''){ $iv && $this->iv = $iv; } //加密 function encrypt($str) { $size = mcrypt_get_block_size ( MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC ); $str = $this->pkcs5Pad ( $str, $size ); $data=mcrypt_cbc(MCRYPT_RIJNDAEL_128, $this->secret_key, $str, MCRYPT_ENCRYPT, $this->iv); //bin2hex() 函数把 ASCII 字符的字符串转换为十六进制值 $data=strtolower(bin2hex($data)); return $data; } //解密 function decrypt($str) { $str = $this->hex2bin( strtolower($str)); $str = mcrypt_cbc(MCRYPT_RIJNDAEL_128, $this->secret_key, $str, MCRYPT_DECRYPT, $this->iv ); $str = $this->pkcs5Unpad( $str ); return $str; } //bin2hex还原 private function hex2bin($hexData) { $binData = ""; for($i = 0; $i < strlen ( $hexData ); $i += 2) { $binData .= chr(hexdec(substr($hexData, $i, 2))); } return $binData; } //PKCS5Padding private function pkcs5Pad($text, $blocksize) { $pad = $blocksize - (strlen ( $text ) % $blocksize); return $text . str_repeat ( chr ( $pad ), $pad ); } private function pkcs5Unpad($text) { $pad = ord ( $text {strlen ( $text ) - 1} ); if ($pad > strlen ( $text )) return false; if (strspn ( $text, chr ( $pad ), strlen ( $text ) - $pad ) != $pad) return false; return substr ( $text, 0, - 1 * $pad ); } } ?>

例如明文：admin，加密后就是4327f7a3c4ad5e1121f12eca79d958ac（注：加密的结果与你的秘钥有关）

无论java和php的AES加密出来的结果都一致。

本文标签： 加密解密模式PHPjavaAES