Java Signature getProvider() method

The provider for the signature object can be obtained using the method getProvider() in the class java.security.Signature. This method requires no parameters and it returns the provider for the signature object.

A program that demonstrates this is given as follows −

Example

 Live Demo

import java.security.*;
import java.util.*;
public class Demo {
   public static void main(String[] argv) {
      try {
         Signature signature = Signature.getInstance("SHA256withRSA");
         Provider provider = signature.getProvider();
         System.out.println("The Provider is: " + provider);
      } catch (NoSuchAlgorithmException e) {
         System.out.println("Error!!! NoSuchAlgorithmException");
      }
   }
}

Output

The Provider is: SunRsaSign version 1.8

Now let us understand the above program.

The method getProvider() is used to obtain the provider for the signature object. Then this provider name is displayed. If the algorithm name is wrong, then the exception NoSuchAlgorithmException is thrown. A code snippet that demonstrates is given as follows −

try {
    Signature signature = Signature.getInstance("SHA256withRSA");
    Provider provider = signature.getProvider();
    System.out.println("The Provider is: " + provider);
} catch (NoSuchAlgorithmException e) {
    System.out.println("Error!!! NoSuchAlgorithmException");
}