文章内容
在项目中使用RSA加密解密，但是对于稍微有点长度的明文加密时，RSA就会提示加密内容过长，导致加密失败。所以在项目中对于请求参数过多的接口使用AES加密解密。
1、Java后台代码
import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import sun.misc.BASE64Decoder;
public class AESUtil {
static String key = "0123456789abcdef"; //16位
static String iv = "0123456789abcdef"; //16位
public static void main(String args[]) throws Exception {
System.out.println(encryptAES("*****"));
System.out.println(decryptAES(encryptAES("123456")));
}
public static String encryptAES(String data) throws Exception {
try {
Cipher cipher = Cipher.getInstance("AES/CBC/NOPadding"); //参数分别代表 算法名称/加密模式/数据填充方式
int blockSize = cipher.getBlockSize();
byte[] dataBytes = data.getBytes();
int plaintextLength = dataBytes.length;
if (plaintextLength % blockSize != 0) {
plaintextLength = plaintextLength + (blockSize - (plaintextLength % blockSize));
}
byte[] plaintext = new byte[plaintextLength];
System.arraycopy(dataBytes, 0, plaintext, 0, dataBytes.length);
SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES");
IvParameterSpec ivspec = new IvParameterSpec(iv.getBytes());
cipher.init(Cipher.ENCRYPT_MODE, keyspec, ivspec);
byte[] encrypted = cipher.doFinal(plaintext);
return new sun.misc.BASE64Encoder().encode(encrypted);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
public static String decryptAES(String data) throws Exception {
try {
byte[] encrypted1 = new BASE64Decoder().decodeBuffer(data);
Cipher cipher = Cipher.getInstance("AES/CBC/NOPadding");
SecretKeySpec keyspec = new SecretKeySpec(key.getBytes("UTF-8"), "AES");
IvParameterSpec ivspec = new IvParameterSpec(iv.getBytes("UTF-8"));
cipher.init(Cipher.DECRYPT_MODE, keyspec, ivspec);
byte[] original = cipher.doFinal(encrypted1);
String originalString = new String(original);
return originalString;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
}
2、js实现代码
插件下载：
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>AES TEST</title>
</head>
<body>
<p>待加密值：123456RWEQR</p>
<p id="p1"></p>
<p id="p2"></p>
<script type="text/javascript" src="js/jquery-1.12.0.min.js"></script>
<script type="text/javascript" src="js/crypto-js.js"></script>
<script type="text/javascript">
$(function () {
var data = "123456RWEQR";
var key = CryptoJS.enc.Latin1.parse('abcdef0123456789');
var iv = CryptoJS.enc.Latin1.parse('0123456789abcdef');
//加密
var encrypted = CryptoJS.AES.encrypt(data, key, {
iv: iv,
mode: CryptoJS.mode.CBC,
padding: CryptoJS.pad.ZeroPadding
});
$("#p1").text("加密结果："+encrypted.toString());
console.log(encrypted.toString())
//解密
var decrypted = CryptoJS.AES.decrypt(encrypted, key, {iv: iv, padding: CryptoJS.pad.ZeroPadding});
console.log(decrypted.toString(CryptoJS.enc.Utf8));
$("#p2").text("解密结果："+decrypted.toString(CryptoJS.enc.Utf8));
})
</script>
</body>
</html>