MessageDigest getAlgorithm() method in Java with Examples
The method getAlgorithm() of java.security.MessageDigest class is used to return the standard name of the algorithm this message digest is associated with.
Syntax:
public final String getAlgorithm()
Return Value: This method returns the algorithm used in message digest.
Below are the examples to illustrate the getAlgorithm() method:
Example 1:
// 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"); // get the name of algorithm // used in MessageDigest // using getAlgorithm() method String algo = msd.getAlgorithm(); // printing the string algo System.out.println("Algorithm : " + algo); } catch (NoSuchAlgorithmException e) { System.out.println("Exception thrown : " + e); } catch (ProviderException e) { System.out.println("Exception thrown : " + e); } }} |
Output:
Algorithm : MD5
Example 2:
// 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"); // get the name of algorithm used in MessageDigest // using getAlgorithm() method String algo = msd.getAlgorithm(); // printing the string algo System.out.println("Algorithm : " + algo); } catch (NoSuchAlgorithmException e) { System.out.println("Exception thrown : " + e); } catch (ProviderException e) { System.out.println("Exception thrown : " + e); } }} |
Output:
Algorithm : SHA-256
Reference: https://docs.oracle.com/javase/9/docs/api/java/security/MessageDigest.html#getAlgorithm–
