Java中的 KeyPairGenerator getAlgorithm() 方法及示例

Java.security.KeyPairGenerator类的getAlgorithm()方法用于返回此密钥对生成器的算法标准名称。有关标准算法名称的信息，请参阅Java Cryptography Architecture Standard Algorithm Name Documentation 中的 KeyPairGenerator 部分。
句法：

public String getAlgorithm()

返回值：该方法返回算法的标准字符串名称。
以下是说明getAlgorithm()方法的示例
示例 1：

Java

// Java program to demonstrate
// genKeyPair() method
 
import java.security.*;
import java.util.*;
 
public class GFG1 {
    public static void main(String[] argv) throws Exception
    {
        try {
 
            // creating the object of KeyPairGenerator
            KeyPairGenerator kpg = KeyPairGenerator
                                       .getInstance("RSA");
 
            // fetching the Algorithm
            // using getAlgorithm() method
            String algo = kpg.getAlgorithm();
 
            // printing the string algo
            System.out.println("Algorithm : " + algo);
        }
 
        catch (NoSuchAlgorithmException e) {
 
            System.out.println("Exception thrown : " + e);
        }
    }
}

输出：

Algorithm : RSA

示例 2：

Java

// Java program to demonstrate
// genKeyPair() method
 
import java.security.*;
import java.util.*;
 
public class GFG1 {
    public static void main(String[] argv) throws Exception
    {
        try {
 
            // creating the object of KeyPairGenerator
            KeyPairGenerator kpg = KeyPairGenerator
                                       .getInstance("DiffieHellman");
 
            // fetching the Algorithm
            // using getAlgorithm() method
            String algo = kpg.getAlgorithm();
 
            // printing the string algo
            System.out.println("Algorithm : " + algo);
        }
 
        catch (NoSuchAlgorithmException e) {
 
            System.out.println("Exception thrown : " + e);
        }
    }
}

输出：

Algorithm : DiffieHellman