标签:ring init 生成 uri stack ted invalid lin adp
APP端传输一些敏感到后台服务端的时候,我们一般都是需要加密传输的。至于使用对称加密还是非对称加密的话,就得看你对数据有多负责了。
下面是我在开发中用到的一个使用AES对称加密传输的demo(亲测有用),希望这个demo对你有一定参考价值。对称加密非对称加密的原理这里就不废话了,直接上代码
import javax.crypto.*;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
/**
* 对称加解密工具类
* created by 一头小菜鸡
*/
public class AesUtil {
/*
* 加密
* 1.构造密钥生成器
* 6.返回字符串
*/
private static final String IV_STRING = "16-Bytes--String"; //这里限制了加密规则只能使16个字符长的字符串
public static String AESEncode(String encodeRules,String content) throws InvalidAlgorithmParameterException {
try {
byte[] keyFormat = encodeRules.getBytes("UTF-8");
byte[] contentFormat = content.getBytes("UTF-8");
SecretKeySpec secretKeySpec = new SecretKeySpec(keyFormat,"AES");
byte[] initParam = IV_STRING.getBytes("UTF-8");
IvParameterSpec ivParameterSpec = new IvParameterSpec(initParam);
Cipher cipher=Cipher.getInstance("AES/CBC/PKCS5Padding");
//初始化密码器
cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec,ivParameterSpec);
byte [] byte_AES=cipher.doFinal(contentFormat);
return parseByte2HexStr(byte_AES);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (NoSuchPaddingException e) {
e.printStackTrace();
} catch (InvalidKeyException e) {
e.printStackTrace();
} catch (IllegalBlockSizeException e) {
e.printStackTrace();
} catch (BadPaddingException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
//如果有错就大胆抛空
return null;
}
/*
* 解密
* 过程和加密基本类似
*/
public static String AESDncode(String encodeRules,String content) throws InvalidAlgorithmParameterException {
try {
byte[] keyFormat = encodeRules.getBytes("UTF-8");
byte[] contentFormat = parseHexStr2Byte(content);
SecretKeySpec secretKeySpec = new SecretKeySpec(keyFormat,"AES");
byte[] initParam = IV_STRING.getBytes("UTF-8");
IvParameterSpec ivParameterSpec = new IvParameterSpec(initParam);
Cipher cipher=Cipher.getInstance("AES/CBC/PKCS5Padding");
//初始化密码器
cipher.init(Cipher.DECRYPT_MODE, secretKeySpec,ivParameterSpec);
byte [] byte_AES=cipher.doFinal(contentFormat);
return new String(byte_AES);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (NoSuchPaddingException e) {
e.printStackTrace();
} catch (InvalidKeyException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (IllegalBlockSizeException e) {
e.printStackTrace();
} catch (BadPaddingException e) {
e.printStackTrace();
}
//如果有错就大胆抛空
return null;
}
/**
* 将二进制转换成16进制
* @method parseByte2HexStr
* @param buf
* @return
*/
public static String parseByte2HexStr(byte buf[]){
StringBuffer sb = new StringBuffer();
for(int i = 0; i < buf.length; i++){
String hex = Integer.toHexString(buf[i] & 0xFF);
if (hex.length() == 1) {
hex = ‘0‘ + hex;
}
sb.append(hex.toUpperCase());
}
return sb.toString();
}
/**
* 将16进制转换为二进制
* @method parseHexStr2Byte
* @param hexStr
* @return
*/
public static byte[] parseHexStr2Byte(String hexStr){
if(hexStr.length() < 1)
return null;
byte[] result = new byte[hexStr.length()/2];
for (int i = 0;i< hexStr.length()/2; i++) {
int high = Integer.parseInt(hexStr.substring(i*2, i*2+1), 16);
int low = Integer.parseInt(hexStr.substring(i*2+1, i*2+2), 16);
result[i] = (byte) (high * 16 + low);
}
return result;
}
public static void main(String[] args) throws InvalidAlgorithmParameterException {
/*
* 加密
*/
String encodeRules="thisisencoderule";
System.out.println("加密规则为:" + encodeRules);
String content = "一头小菜鸡的账号和密码";
System.out.println("加密的内容为:"+content);
String keyContent = AesUtil.AESEncode(encodeRules,content);
System.out.println("加密后的内容为:" + keyContent);
System.out.println("解密后的明文为:"+ AesUtil.AESDncode(encodeRules,keyContent));
}
}
非常感谢下面两篇博文,更感谢其博主大佬
[1] https://www.iteye.com/blog/songjianyong-1571029
[2] https://www.cnblogs.com/Dennis-mi/articles/6639644.html
[3] https://www.cnblogs.com/liunanjava/p/4297854.html
标签:ring init 生成 uri stack ted invalid lin adp
原文地址:https://www.cnblogs.com/kuangdw/p/12933449.html