MessageDigest getProvider() method in Java with Examples

The method getProvider() of java.security.MessageDigest class is used to get the provider of this message digest.

Syntax:

public final Provider getProvider()

Return Value: This method returns the provider of this MessageDigest.

Below are the examples to illustrate the getProvider() method:

Example 1: For AlgorithmMD5



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// Java program to demonstrate
// getAlgorithm() method
  
import java.security.*;
import java.util.*;
  
public class GFG1 {
    public static void main(String[] argv)
    {
        try {
            // creating object of MessageDigest
            MessageDigest msd
                = MessageDigest.getInstance("MD5");
  
            // getting provider used in object msd
            // using getAlgorithm() method
            Provider pro = msd.getProvider();
  
            // display the provider
            System.out.println("Provider : " + pro);
        }
  
        catch (NoSuchAlgorithmException e) {
  
            System.out.println("Exception thrown : " + e);
        }
        catch (ProviderException e) {
  
            System.out.println("Exception thrown : " + e);
        }
    }
}

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Output:


Provider : SUN version 1.8





Example 2: For Algorithm SHA-256











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// Java program to demonstrate 


// getAlgorithm() method 


  


import java.security.*; 


import java.util.*; 


  


public class GFG1 { 


    public static void main(String[] argv) 


    { 


        try { 


            // creating object of MessageDigest 


            MessageDigest msd 


                = MessageDigest.getInstance("SHA-256"); 


  


            // getting provider used in object msd 


            // using getAlgorithm() method 


            Provider pro = msd.getProvider(); 


  


            // display the provider 


            System.out.println("Provider : " + pro); 


        } 


  


        catch (NoSuchAlgorithmException e) { 


  


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


        } 


        catch (ProviderException e) { 


  


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


        } 


    } 


} 



















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Output:


Provider : SUN version 1.8





Reference: https://docs.oracle.com/javase/9/docs/api/java/security/MessageDigest.html#getAlgorithm–


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