import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
/**
* java使用AES加密解密 AES-128-ECB加密
* 与mysql数据库aes加密算法通用
* 数据库aes加密解密
* -- 加密
* SELECT to_base64(AES_ENCRYPT('www.gowhere.so','jkl;POIU1234++=='));
* -- 解密
* SELECT AES_DECRYPT(from_base64('Oa1NPBSarXrPH8wqSRhh3g=='),'jkl;POIU1234++==');
* @author 836508
*
*/
public class MyAESUtil {
// 加密
public static String Encrypt(String sSrc, String sKey) throws Exception {
if (sKey == null) {
System.out.print("Key为空null");
return null;
}
// 判断Key是否为16位
if (sKey.length() != 16) {
System.out.print("Key长度不是16位");
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 BASE64Encoder().encode(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) throws Exception {
try {
// 判断Key是否正确
if (sKey == null) {
System.out.print("Key为空null");
return null;
}
// 判断Key是否为16位
if (sKey.length() != 16) {
System.out.print("Key长度不是16位");
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 = new BASE64Decoder().decodeBuffer(sSrc);//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 = "jkl;POIU1234++==";
// 需要加密的字串
String cSrc = "www.gowhere.so";
System.out.println(cSrc);
// 加密
String enString = MyAESUtil.Encrypt(cSrc, cKey);
System.out.println("加密后的字串是:" + enString);
// 解密
String DeString = MyAESUtil.Decrypt(enString, cKey);
System.out.println("解密后的字串是:" + DeString);
}
}
转载自:https://www.iteye.com/blog/wddpwzzhao123-2346325