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  • 【Java/PBE】使用PBEWITHMD5andDES加密解密

    程序:

    package ufo;
    
    import java.security.Key;
    import java.security.SecureRandom;
    
    import javax.crypto.Cipher;
    import javax.crypto.SecretKeyFactory;
    import javax.crypto.spec.PBEKeySpec;
    import javax.crypto.spec.PBEParameterSpec;
    
    import org.apache.commons.codec.binary.Base64;
    
    public class PBEWITHMD5andDES_Test {
        public static void main(String... args) {
            String original="Let’s Build a Giant Airship 青海长云暗雪山";
            System.out.println("原文=	"+original);
            
            try {
                // 生产密钥
                String password="haha168";// 口令
                PBEKeySpec pbeKeySpec = new PBEKeySpec(password.toCharArray());
                SecretKeyFactory factory=SecretKeyFactory.getInstance("PBEWITHMD5andDES");
                Key key =factory.generateSecret(pbeKeySpec);// 密钥,下面加密解密都要用到
                System.out.println("密钥=	"+Base64.encodeBase64String(key.getEncoded()));
                
                // 初始化盐
                SecureRandom random=new SecureRandom();
                byte [] salt=random.generateSeed(8);
                PBEParameterSpec pbeParameterSpec=new PBEParameterSpec(salt, 100);
                
                // 加密
                Cipher cipher =Cipher.getInstance("PBEWITHMD5andDES");
                cipher.init(Cipher.ENCRYPT_MODE,key, pbeParameterSpec);
                byte[] bytes = cipher.doFinal(original.getBytes());
                System.out.println("密文=	"+Base64.encodeBase64String(bytes));
                
                // 解密
                cipher.init(Cipher.DECRYPT_MODE,key,pbeParameterSpec);
                bytes=cipher.doFinal(bytes);
                System.out.println("解密后=	"+new String(bytes));
                
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }

    输出:

    原文=    Let’s Build a Giant Airship 青海长云暗雪山
    密钥=    aGFoYTE2OA==
    密文=    fgYLsGkeyJCzYkp7W5FgsxoIjtVCjd4yiYUOoiE4tdx0CV3Xx7EcbwsRoIMSaEIy
    解密后=    Let’s Build a Giant Airship 青海长云暗雪山

    END

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  • 原文地址:https://www.cnblogs.com/heyang78/p/15364041.html
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