公司和外部合作数据互通，对方的语言是java的，使用的是AES/ECB/PKCS5Padding加密方式，我这边是PHP的，这里说下两者加密互通的实现；
首先贴下Java的语言：
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.codec.binary.Base64;
public class AESUtil {
// 加密
public static String Encrypt(String sSrc, String sKey) throwsException {
if (sKey == null) {
System.out.print("Key为空null");return null;
}
byte[] raw = sKey.getBytes("utf-8");
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
Cipher cipher =
Cipher.getInstance("AES/ECB/PKCS5Padding");//"算法/模式/补码方式"cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
byte[] encrypted = cipher.doFinal(sSrc.getBytes("utf-8"));
return new String(Base64.encodeBase64(encrypted));//此处使用BASE64做转码功能，同时能起到2次加密的作用。
}
// 解密
public static String Decrypt(String sSrc, String sKey) throwsException {
try {
// 判断Key是否正确
if (sKey == null) {
System.out.print("Key为空null");
return null;
}
byte[] raw = sKey.getBytes("utf-8");
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
Cipher cipher =
Cipher.getInstance("AES/ECB/PKCS5Padding");
cipher.init(Cipher.DECRYPT_MODE, skeySpec);
byte[] encrypted1 =
Base64.decodeBase64(sSrc.getBytes());//先用base64解密
try {
byte[] original = cipher.doFinal(encrypted1);
String originalString = new String(original,"utf-8");return originalString;
} catch (Exception e) {
System.out.println(e.toString());return null;
}
} catch (Exception ex) {
System.out.println(ex.toString());
return null;
}
}
public static void main(String[] args) throws Exception {
/*
* 此处使用AES-128-ECB加密模式，key需要为16位。
*/
String cKey = "p";
// 需要加密的字串
String cSrc = "WFMED";
System.out.println(cSrc);// 加密
String enString = AESUtil.Encrypt(cSrc, cKey);
System.out.println("加密后的字串是:" + enString);
// 解密
String DeString = AESUtil.Decrypt(enString, cKey);
System.out.println("解密后的字串是:" + DeString);
}
}
现在贴上PHP的方法：
class Security {
public static function encrypt($input, $key) {
$size = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_ECB);
$input = Security::pkcs5_pad($input, $size);
$td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_ECB, '');
$iv = mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
mcrypt_generic_init($td, $key, $iv);
$data = mcrypt_generic($td, $input);
mcrypt_generic_deinit($td);
mcrypt_module_close($td);
$data = base64_encode($data);
return $data;
}
private static function pkcs5_pad ($text, $blocksize) {
$pad = $blocksize - (strlen($text) % $blocksize);
return $text . str_repeat(chr($pad), $pad);
}
public static function decrypt($sStr, $sKey) {
$decrypted= mcrypt_decrypt(
MCRYPT_RIJNDAEL_128,
$sKey,
base64_decode($sStr),
MCRYPT_MODE_ECB
);
$dec_s = strlen($decrypted);
$padding = ord($decrypted[$dec_s-1]);
$decrypted = substr($decrypted, 0, -$padding);
return $decrypted;
}
}
$key = "1234567891234567";
$data = "example";
$value = Security::encrypt($data , $key );
echo "加密字符串：".$value.'<br/>';
echo "解密字符串：".Security::decrypt($value, $key );
以上就学会了如何Java和PHP的AES/ECB/PKCS5Padding加密模式PHP和JAVA互通。亲测可行哦。