AES加解密工具类
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
/**
* AES加密128位CBC模式工具类
*/
public class AESUtils {
//解密密钥(自行随机生成)
public static final String KEY = "qxhzngy266a186ke";//密钥key
public static final String IV = "1ci5crnda6ojzgtr";//向量iv
//认证密钥(自行随机生成)
public static final String AK = "s2ip9g3y3bjr5zz7ws6kjgx3ysr82zzw";//AccessKey
public static final String SK = "uv8zr0uen7aim8m7umcuooqzdv8cbvtf";//SecretKey
//加密
public static String Encrypt(String content) throws Exception {
byte[] raw = KEY.getBytes("utf-8");
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");//"算法/模式/补码方式"
//使用CBC模式,需要一个向量iv,可增加加密算法的强度
IvParameterSpec ips = new IvParameterSpec(IV.getBytes());
cipher.init(Cipher.ENCRYPT_MODE, skeySpec, ips);
byte[] encrypted = cipher.doFinal(content.getBytes());
return new BASE64Encoder().encode(encrypted);
}
//解密
public static String Decrypt(String content) throws Exception {
try {
byte[] raw = KEY.getBytes("utf-8");
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
IvParameterSpec ips = new IvParameterSpec(IV.getBytes());
cipher.init(Cipher.DECRYPT_MODE, skeySpec, ips);
byte[] encrypted1 = new BASE64Decoder().decodeBuffer(content);
try {
byte[] original = cipher.doFinal(encrypted1);
String originalString = new String(original);
return originalString;
} catch (Exception e) {
System.out.println(e.toString());
return null;
}
} catch (Exception ex) {
System.out.println(ex.toString());
return null;
}
}
//获取认证签名(身份认证需要)
public static String getSign(String currentTime) throws Exception {
String sign = "";
Map<String, Object> map=new HashMap<String,Object>();
map.put("ak",AK);
map.put("sk",SK);
map.put("ts",currentTime);
//获取 参数字典排序后字符串
String decrypt = getOrderMap(map);
try {
//指定sha1算法
MessageDigest digest = MessageDigest.getInstance("SHA-1");
digest.update(decrypt.getBytes());
//获取字节数组
byte messageDigest[] = digest.digest();
// Create Hex String
StringBuffer hexString = new StringBuffer();
// 字节数组转换为十六进制数
for (int i = 0; i < messageDigest.length; i++) {
String shaHex = Integer.toHexString(messageDigest[i] & 0xFF);
if (shaHex.length() < 2) {
hexString.append(0);
}
hexString.append(shaHex);
}
sign = hexString.toString();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
return sign;
}
//获取参数的字典排序
private static String getOrderMap(Map<String,Object> maps){
List<String> paramNames = new ArrayList<String>();
for(Map.Entry<String,Object> entry : maps.entrySet()){
paramNames.add(entry.getValue().toString());
}
Collections.sort(paramNames);
StringBuilder paramStr = new StringBuilder();
for(String paramName : paramNames){
paramStr.append(paramName);
}
return paramStr.toString();
}
}
测试结果
public class AES128CBC {
public static void main(String[] args) throws Exception {
String content = "需要加密的内容";
//加密
String ens = AESUtils.Encrypt(content);
System.out.println("加密后:" + ens);
//解密
String des = AESUtils.Decrypt(ens);
System.out.println("解密后:" + des);
}
}
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