Java 签名 getAlgorithm()方法示例

原文:https://www . geesforgeks . org/Java-signature-getalgorithm-method-with-examples/

java.security.Signature 类的 getAlgorithm() 方法用于返回该签名对象的算法名称。 语法:

public final String getAlgorithm()

返回值:该方法返回该签名对象的算法名称。 以下是说明 getAlgorithm()方法的示例: 示例 1:

Java 语言(一种计算机语言，尤用于创建网站)

// Java program to demonstrate
// getAlgorithm() method

import java.security.*;
import java.util.*;

public class GFG1 {
    public static void main(String[] argv)
    {
        try {

            // creating the object of Signature
            Signature sr = Signature.getInstance("SHA1withDSA");

            // getting the Algorithm
            // by using method getAlgorithm()
            String algo = sr.getAlgorithm();

            // printing the string algo
            System.out.println("Algorithm: " + algo);
        }

        catch (NoSuchAlgorithmException e) {

            System.out.println("Exception thrown : " + e);
        }
    }
}

Output: 

Algorithm: SHA1withDSA

例 2:

Java 语言(一种计算机语言，尤用于创建网站)

// Java program to demonstrate
// getAlgorithm() method

import java.security.*;
import java.util.*;

public class GFG1 {
    public static void main(String[] argv)
    {
        try {

            // creating the object of Signature
            Signature sr = Signature.getInstance("NONEwithDSA");

            // getting the Algorithm
            // by using method getAlgorithm()
            String algo = sr.getAlgorithm();

            // printing the string algo
            System.out.println("Algorithm: " + algo);
        }

        catch (NoSuchAlgorithmException e) {

            System.out.println("Exception thrown : " + e);
        }
    }
}

Output: 

Algorithm: NONEwithDSA

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