1. 前端AES加解密
1) 使用技術:開源JS(CryptoJS)
官網:https://github.com/brix/crypto-js
2) demo
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js"></script>
<script type="text/javascript" src="./comm/crypto-js/crypto-js.js"></script>
<script type="text/javascript" src="./comm/crypto-js/aes.js"></script>
<script>
window.onload = function() {
var f = document.getElementById("file");
//this.files即獲取input中上傳的file對象 是個數組
f.onchange = function() {
//獲取文件對象
var file = this.files[0];
//使用fileReader對文件對象進行操作
var reader = new FileReader();
//用於圖片顯示不需要傳入後臺，reader.result的結果是base64編碼數據，直接放入img的src中即可
reader.readAsDataURL(file);
reader.onload = function() {
// 1.取得加密前的明文數據(base64格式)
var src = this.result.split(',')[1];
$("#de").text(src);
$("#del").text(src.length);
// 2.加密處理
//var key = CryptoJS.enc.Hex.parse('1234567890123456')
var key = CryptoJS.enc.Utf8.parse('1234567890123456');
var iv = CryptoJS.enc.Utf8.parse("0123456789ABCDEF")
console.log('原字符串：', src);
var enc = CryptoJS.AES.encrypt(src, key, {
iv : iv,
mode : CryptoJS.mode.CBC,
padding : CryptoJS.pad.Pkcs7
})
var enced = enc.ciphertext.toString()
$("#en").text(enced);
$("#enl").text(enced.length);
// 3.解密處理
var dec = CryptoJS.AES.decrypt(
CryptoJS.format.Hex.parse(enced), key, {
iv : iv,
mode : CryptoJS.mode.CBC,
padding : CryptoJS.pad.Pkcs7
});
$("#de2").text(CryptoJS.enc.Utf8.stringify(dec));
$("#de2l").text(CryptoJS.enc.Utf8.stringify(dec).length);
}
}
}
</script>
</head>
<body>
<input type="file" id="file">
<!-- 只能上傳單個文件 -->
<br> 明文:
<br>
<textarea id="de" style="width: 1100px; height: 300px"></textarea>
<span id="del"></span>
<br> 密文:
<br>
<textarea id="en" style="width: 1100px; height: 300px"></textarea>
<span id="enl"></span>
<br> 明文(解密後):
<br>
<textarea id="de2" style="width: 1100px; height: 300px"></textarea>
<span id="de2l"></span>
</body>
</html>
2. Java端AES加解密
1) 使用技術:開源Jar(bcprov-ext-jdk15on-1.61.jar)
<dependency>
<groupId>org.bouncycastle</groupId>
<artifactId>bcprov-ext-jdk15on</artifactId>
<version>1.61</version>
</dependency>
2) demo
package encrypt.img;
import java.io.File;
import java.security.Security;
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.io.FileUtils;
import org.junit.Before;
import org.junit.Test;
public class AesCbcTest {
public static final String KEY_ALGORITHM = "AES";
// 加解密算法/模式/填充方式
// 可以任意選擇，爲了方便後面與iOS端的加密解密，採用與其相同的模式與填充方式
// ECB模式只用密鑰即可對數據進行加密解密，CBC模式需要添加一個參數iv
public static final String CIPHER_ALGORITHM = "AES/CBC/PKCS7Padding";
@Before
public void initDH() {
Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());
}
@Test
public void testAesDecrvpt() throws Exception {
// 1.初始化key和iv
String basePath = this.getClass().getResource("/").getPath();
String enc = FileUtils.readFileToString(new File(basePath + "\\data\\密文.txt"), "utf-8");
// 2.aes解密
byte[] key = "1234567890123456".getBytes("utf-8");
byte[] iv = "0123456789ABCDEF".getBytes("utf-8");
SecretKey secretKey = new SecretKeySpec(key, KEY_ALGORITHM);
IvParameterSpec ivParameterSpec = new IvParameterSpec(iv);
Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
cipher.init(Cipher.DECRYPT_MODE, secretKey, ivParameterSpec);
byte[] hexBytes = hexStringToBytes(enc);
byte[] plainBytes = cipher.doFinal(hexBytes);
// 3.輸出結果
String de = new String(plainBytes, "utf-8");
FileUtils.writeStringToFile(new File(basePath + "\\data\\明文(解密後).txt"), de, "utf-8");
FileUtils.writeByteArrayToFile(new File(basePath + "\\data\\明文(解密後).jpg"), org.springframework.util.Base64Utils.decode(plainBytes));
}
/**
* 將16進制字符串裝換爲byte數組
*
* @param hexString
* @return
*/
public static byte[] hexStringToBytes(String hexString) {
hexString = hexString.toUpperCase();
int length = hexString.length() / 2;
char[] hexChars = hexString.toCharArray();
byte[] b = new byte[length];
for (int i = 0; i < length; i++) {
int pos = i * 2;
b[i] = (byte) (charToByte(hexChars[pos]) << 4 | charToByte(hexChars[pos + 1]));
}
return b;
}
private static byte charToByte(char c) {
return (byte) "0123456789ABCDEF".indexOf(c);
}
}