3DES(DESede、Triple-DES、DES-EDE) 加解密 JAVA

我不是女神ヾ 2022-09-07 15:59 222阅读 0赞

**对称加密(DES、3DES)、非对称加密(RSA、SHA1withRSA)  
参考:** [https://blog.csdn.net/sinat\_16998945/article/details/94639023][https_blog.csdn.net_sinat_16998945_article_details_94639023]

3DES、DESede、Triple-DES、DES-EDE名称相互都是别名

## 一、java加解密代码 ##

**默认模式为：DESede/ECB/PKCS5Padding**

package com.pd.shop.utils;
    
    import org.apache.tomcat.util.codec.binary.Base64;
    import javax.crypto.*;
    import javax.crypto.spec.DESedeKeySpec;
    import java.security.Key;
    import java.security.NoSuchAlgorithmException;
    
    public class DESedeUtils { 
        /** * 默认 DESede/ECB/PKCS5Padding */
        private static final String Algorithm = "DESede/ECB/PKCS5Padding";
    
        private static final String DESede = "DESede";
    
        private final static String Encoding = "utf-8";
    
        /** * DESede 加密 * * @param src 加密数据 * @param key 密钥 * @return */
        public static String Encrypt(String src, String key) { 
            String ss = "";
            try { 
                byte[] b = Base64.decodeBase64(key);
                DESedeKeySpec spec = new DESedeKeySpec(b);
                SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DESede);
                Key secretKey = keyFactory.generateSecret(spec);
                Cipher c1 = Cipher.getInstance(Algorithm);
                c1.init(1, secretKey);
                b = c1.doFinal(src.getBytes());
                ss = Base64.encodeBase64String(b);
            } catch (NoSuchAlgorithmException e) { 
                e.printStackTrace();
            } catch (NoSuchPaddingException e) { 
                e.printStackTrace();
            } catch (Exception e) { 
                e.printStackTrace();
            }
            return ss;
        }
    
        /** * DESede 解密 * * @param src 解密数据 * @param key 密钥 * @return */
        public static String Decrypt(String src, String key) { 
            try { 
                byte[] s = Base64.decodeBase64(src);
                byte[] b = Base64.decodeBase64(key);
                DESedeKeySpec spec = new DESedeKeySpec(b);
                SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DESede);
                Key secretKey = keyFactory.generateSecret(spec);
                Cipher cipher = Cipher.getInstance(Algorithm);
                cipher.init(2, secretKey);
                byte[] decryptData = cipher.doFinal(s);
                return new String(decryptData, Encoding);
            } catch (Exception e) { 
                e.printStackTrace();
                return null;
            }
        }
    }

## 二·、加解密调用方法 ##

String str = "001张三*";
    String key = "5d48b92bfcccc1db9d3d965b32ead033";
    
    //加密调用方法
    String encryptStr = DESedeUtils.Encrypt(str,key);
    //结果 encryptStr = "eAgalz8MjYceOOI5V77fgA=="
    
    
    //解密调用方法
    String decryptStr = DESedeUtils.Decrypt(encryptStr,key);
    //结果 decryptStr = "001张三*"

[https_blog.csdn.net_sinat_16998945_article_details_94639023]: https://blog.csdn.net/sinat_16998945/article/details/94639023