AES 和 Base64 加解密
gyh 2018-09-09
# CBC 模式
# 前端实现
const CryptoJS = require("crypto-js") //引用AES源码js
const keyString = "xxxxxx"
let key = CryptoJS.SHA256(keyString).toString()
key = CryptoJS.enc.Hex.parse(key)
console.log("key", key)
var iv = CryptoJS.enc.Hex.parse("00000000000000000000000000000000")
console.log("iv", iv)
// 解密方法
function Decrypt(word) {
var wordBase = CryptoJS.enc.Base64.parse(word).toString()
console.log(wordBase)
const wordHash = CryptoJS.format.Hex.parse(wordBase)
console.log("wordHash", wordHash)
var dec = CryptoJS.AES.decrypt(wordHash, key, {
iv: iv,
mode: CryptoJS.mode.CBC,
padding: CryptoJS.pad.Pkcs7,
})
return CryptoJS.enc.Utf8.stringify(dec)
}
//加密方法
function Encrypt(word) {
var enc = CryptoJS.AES.encrypt(word, key, {
iv: iv,
mode: CryptoJS.mode.CBC,
padding: CryptoJS.pad.Pkcs7,
})
return enc.toString()
}
export default {
Decrypt,
Encrypt,
}
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# 后端实现
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.KeyGenerator;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
public class AES {
private static String iv = "0123456789ABCDEF";//偏移量字符串必须是16位 当模式是CBC的时候必须设置偏移量
private static String Algorithm = "AES";
private static String AlgorithmProvider = "AES/CBC/PKCS5Padding"; //算法/模式/补码方式
public static byte[] generatorKey() throws NoSuchAlgorithmException {
KeyGenerator keyGenerator = KeyGenerator.getInstance(Algorithm);
keyGenerator.init(256);//默认128，获得无政策权限后可为192或256
SecretKey secretKey = keyGenerator.generateKey();
return secretKey.getEncoded();
}
public static IvParameterSpec getIv() throws UnsupportedEncodingException {
IvParameterSpec ivParameterSpec = new IvParameterSpec(iv.getBytes("utf-8"));
System.out.println("偏移量："+byteToHexString(ivParameterSpec.getIV()));
return ivParameterSpec;
}
public static byte[] encrypt(String src, byte[] key) throws NoSuchAlgorithmException, NoSuchPaddingException,
InvalidKeyException, IllegalBlockSizeException, BadPaddingException, UnsupportedEncodingException, InvalidAlgorithmParameterException {
SecretKey secretKey = new SecretKeySpec(key, Algorithm);
IvParameterSpec ivParameterSpec = getIv();
Cipher cipher = Cipher.getInstance(AlgorithmProvider);
cipher.init(Cipher.ENCRYPT_MODE, secretKey, ivParameterSpec);
byte[] cipherBytes = cipher.doFinal(src.getBytes(Charset.forName("utf-8")));
return cipherBytes;
}
public static byte[] decrypt(String src, byte[] key) throws Exception {
SecretKey secretKey = new SecretKeySpec(key, Algorithm);
IvParameterSpec ivParameterSpec = getIv();
Cipher cipher = Cipher.getInstance(AlgorithmProvider);
cipher.init(Cipher.DECRYPT_MODE, secretKey, ivParameterSpec);
byte[] hexBytes = hexStringToBytes(src);
byte[] plainBytes = cipher.doFinal(hexBytes);
return plainBytes;
}
/**
* 将byte转换为16进制字符串
* @param src
* @return
*/
public static String byteToHexString(byte[] src) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < src.length; i++) {
int v = src[i] & 0xff;
String hv = Integer.toHexString(v);
if (hv.length() < 2) {
sb.append("0");
}
sb.append(hv);
}
return sb.toString();
}
/**
* 将16进制字符串装换为byte数组
* @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);
}
public static void main(String[] args) {
try {
// byte key[] = generatorKey();
// 密钥必须是16的倍数
byte key[] = "1234567890ABCDEF1234567890ABCDEf".getBytes("utf-8");//hexStringToBytes("0123456789ABCDEF");
String src = "werty7890";
System.out.println("密钥:"+byteToHexString(key));
System.out.println("原字符串:"+src);
String enc = byteToHexString(encrypt(src, key));
System.out.println("加密："+enc);
System.out.println("解密："+new String(decrypt(enc, key), "utf-8"));
} catch (InvalidKeyException e) {
e.printStackTrace();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (NoSuchPaddingException e) {
e.printStackTrace();
} catch (IllegalBlockSizeException e) {
e.printStackTrace();
} catch (BadPaddingException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
}
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# ECB 模式
# 前端实现
<script src="./js/crypto-js.js"></script>
<script src="./js/aes.js"></script>
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var key = "3132333435363738393041424344454631323334353637383930414243444566"
console.log("密钥：", key)
key = CryptoJS.enc.Hex.parse(key)
//iv = CryptoJS.enc.Hex.parse("30313233343536373839414243444546")
//console.log('偏移量:',CryptoJS.enc.Hex.stringify(iv));
var src = "werty7890"
console.log("原字符串：", src)
var enc = CryptoJS.AES.encrypt(src, key, {
//iv:iv,
mode: CryptoJS.mode.ECB,
padding: CryptoJS.pad.Pkcs7,
})
//console.log('加密:',enc.toString());
var enced = enc.ciphertext.toString()
console.log("加密：", enced)
var dec = CryptoJS.AES.decrypt(CryptoJS.format.Hex.parse(enced), key, {
//iv:iv,
mode: CryptoJS.mode.ECB,
padding: CryptoJS.pad.Pkcs7,
})
console.log("解密:", CryptoJS.enc.Utf8.stringify(dec))
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# 后端实现
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.KeyGenerator;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
public class AES {
private static String iv = "0123456789ABCDEF";//偏移量字符串必须是16位 当模式是CBC的时候必须设置偏移量
private static String Algorithm = "AES";
private static String AlgorithmProvider = "AES/ECB/PKCS5Padding"; // 算法/模式/补码方式
public static byte[] generatorKey() throws NoSuchAlgorithmException {
KeyGenerator keyGenerator = KeyGenerator.getInstance(Algorithm);
keyGenerator.init(256);//默认128，获得无政策权限后可为192或256
SecretKey secretKey = keyGenerator.generateKey();
return secretKey.getEncoded();
}
public static IvParameterSpec getIv() throws UnsupportedEncodingException {
IvParameterSpec ivParameterSpec = new IvParameterSpec(iv.getBytes("utf-8"));
System.out.println("偏移量："+byteToHexString(ivParameterSpec.getIV()));
return ivParameterSpec;
}
public static byte[] encrypt(String src, byte[] key) throws NoSuchAlgorithmException, NoSuchPaddingException,
InvalidKeyException, IllegalBlockSizeException, BadPaddingException, UnsupportedEncodingException, InvalidAlgorithmParameterException {
SecretKey secretKey = new SecretKeySpec(key, Algorithm);
//IvParameterSpec ivParameterSpec = getIv();
Cipher cipher = Cipher.getInstance(AlgorithmProvider);
cipher.init(Cipher.ENCRYPT_MODE, secretKey);
byte[] cipherBytes = cipher.doFinal(src.getBytes(Charset.forName("utf-8")));
return cipherBytes;
}
public static byte[] decrypt(String src, byte[] key) throws Exception {
SecretKey secretKey = new SecretKeySpec(key, Algorithm);
//IvParameterSpec ivParameterSpec = getIv();
Cipher cipher = Cipher.getInstance(AlgorithmProvider);
cipher.init(Cipher.DECRYPT_MODE, secretKey);
byte[] hexBytes = hexStringToBytes(src);
byte[] plainBytes = cipher.doFinal(hexBytes);
return plainBytes;
}
/**
* 将byte转换为16进制字符串
* @param src
* @return
*/
public static String byteToHexString(byte[] src) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < src.length; i++) {
int v = src[i] & 0xff;
String hv = Integer.toHexString(v);
if (hv.length() < 2) {
sb.append("0");
}
sb.append(hv);
}
return sb.toString();
}
/**
* 将16进制字符串装换为byte数组
* @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);
}
public static void main(String[] args) {
try {
// byte key[] = generatorKey();
// 密钥必须是16的倍数
byte key[] = "1234567890ABCDEF1234567890ABCDEf".getBytes("utf-8");//hexStringToBytes("0123456789ABCDEF");
String src = "werty7890";
System.out.println("密钥:"+byteToHexString(key));
System.out.println("原字符串:"+src);
String enc = byteToHexString(encrypt(src, key));
System.out.println("加密："+enc);
System.out.println("解密："+new String(decrypt(enc, key), "utf-8"));
} catch (InvalidKeyException e) {
e.printStackTrace();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (NoSuchPaddingException e) {
e.printStackTrace();
} catch (IllegalBlockSizeException e) {
e.printStackTrace();
} catch (BadPaddingException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
}
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