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MessageDigest getProvider() method in Java with Examples
  • Last Updated : 14 Oct, 2019

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






// 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);
        }
    }
}
Output:
Provider : SUN version 1.8

Example 2: For Algorithm SHA-256




// 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);
        }
    }
}
Output:
Provider : SUN version 1.8

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

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