APP项目用户密码传输一直没有用HTTPS，考虑到用户的隐私暂时先用AES对密码加密，以后也可以用于手机端与服务端加密交互。

PHP的免费版项目，手机端解码各种不对。

好不容易找了PHP ANDROID IOS，相互加解密正常的AES加密算法代码。

PHP的AES加密算法：

     key = hash('sha256', $this->key, true);        //echo $this->key.'
';    }    function encrypt($str) {           $td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, '');        mcrypt_generic_init($td, $this->key, $this->hexToStr($this->hex_iv));        $block = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);        $pad = $block - (strlen($str) % $block);        $str .= str_repeat(chr($pad), $pad);        $encrypted = mcrypt_generic($td, $str);        mcrypt_generic_deinit($td);        mcrypt_module_close($td);            return base64_encode($encrypted);    }    function decrypt($code) {            $td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, '');        mcrypt_generic_init($td, $this->key, $this->hexToStr($this->hex_iv));        $str = mdecrypt_generic($td, base64_decode($code));        $block = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);        mcrypt_generic_deinit($td);        mcrypt_module_close($td);            return $this->strippadding($str);               }    /*      For PKCS7 padding     */    private function addpadding($string, $blocksize = 16) {        $len = strlen($string);        $pad = $blocksize - ($len % $blocksize);        $string .= str_repeat(chr($pad), $pad);        return $string;    }    private function strippadding($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 $string;        } else {            return false;        }    }function hexToStr($hex){    $string='';    for ($i=0; $i < strlen($hex)-1; $i+=2)    {        $string .= chr(hexdec($hex[$i].$hex[$i+1]));    }    return $string;}}$encryption = new MCrypt();echo $encryption->encrypt('top secret message') . "
";echo $encryption->decrypt('EQyz+ukU+ss+Sinf15bApdYj5ANrRwY632v8EhrzLPk=');?>

java的AES加密算法：

import javax.crypto.Cipher;import javax.crypto.spec.IvParameterSpec;import javax.crypto.spec.SecretKeySpec;import android.util.Base64;/** * @author vipin.cb , vipin.cb@experionglobal.com 
 *         Sep 27, 2013, 5:18:34 PM 
 *         Package:- com.veebow.util 
 *         Project:- Veebow *         
 */public class AESCrypt {    private final Cipher cipher;    private final SecretKeySpec key;    private AlgorithmParameterSpec spec;    public static final String SEED_16_CHARACTER = "U1MjU1M0FDOUZ.Qz";    public AESCrypt() throws Exception {        // hash password with SHA-256 and crop the output to 128-bit for key        MessageDigest digest = MessageDigest.getInstance("SHA-256");        digest.update(SEED_16_CHARACTER.getBytes("UTF-8"));        byte[] keyBytes = new byte[32];        System.arraycopy(digest.digest(), 0, keyBytes, 0, keyBytes.length);        cipher = Cipher.getInstance("AES/CBC/PKCS7Padding");        key = new SecretKeySpec(keyBytes, "AES");        spec = getIV();    }    public AlgorithmParameterSpec getIV() {        byte[] iv = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, };        IvParameterSpec ivParameterSpec;        ivParameterSpec = new IvParameterSpec(iv);        return ivParameterSpec;    }    public String encrypt(String plainText) throws Exception {        cipher.init(Cipher.ENCRYPT_MODE, key, spec);        byte[] encrypted = cipher.doFinal(plainText.getBytes("UTF-8"));        String encryptedText = new String(Base64.encode(encrypted,                Base64.DEFAULT), "UTF-8");        return encryptedText;    }    public String decrypt(String cryptedText) throws Exception {        cipher.init(Cipher.DECRYPT_MODE, key, spec);        byte[] bytes = Base64.decode(cryptedText, Base64.DEFAULT);        byte[] decrypted = cipher.doFinal(bytes);        String decryptedText = new String(decrypted, "UTF-8");        return decryptedText;    }}

 

IOS的AES加密算法：

stackoverflow参考

 转自：http://www.funboxpower.com/php_android_ios_aes