Problem Name: Java SHA-256

Problem Link: h

In this HackerRank Functions in Java programming problem solution,

Cryptographic hash functions are mathematical operations run on digital data; by comparing the computed hash (i.e., the output produced by executing a hashing algorithm) to a known and expected hash value, a person can determine the data's integrity. For example, computing the hash of a downloaded file and comparing the result to a previously published hash result can show whether the download has been modified or tampered with. In addition, cryptographic hash functions are extremely collision-resistant; in other words, it should be extremely difficult to produce the same hash output from two different input values using a cryptographic hash function.

Secure Hash Algorithm 2 (SHA-2) is a set of cryptographic hash functions designed by the National Security Agency (NSA). It consists of six identical hashing algorithms (i.e., SHA-256, SHA-512, SHA-224, SHA-384, SHA-512/224, SHA-512/256) with a variable digest size. SHA-256 is a 256-bit (32 byte) hashing algorithm which can calculate a hash code for an input of up to 264 - 1 bits. It undergoes 64 rounds of hashing and calculates a hash code that is a 64-digit hexadecimal number.

Given a string, s, print its SHA-256 hash value.

Input Format

A single alphanumeric string denoting s.


  • 6 <= |s| <=20
  • String s consists of English alphabetic letters (i.e., [a - zA - A] and/or decimal digits (i.e., 0 through 9) only.

Output Format

Print the SHA-256 encryption value of s on a new line.

Sample Input 0


Sample Output 0


Sample Input 1


Sample Output 1







Code Examples

#1 Code Example with Java Programming

Code - Java Programming

import java.util.Scanner;

public class Solution {
    public static void main(String[] args) throws NoSuchAlgorithmException {
        /* Read and save the input String */
        Scanner scan = new Scanner(;
        String str =;
        /* Encode the String using SHA-256 */
        MessageDigest md = MessageDigest.getInstance("SHA-256");
        byte[] digest = md.digest();
        /* Print the encoded value in hexadecimal */
        for (byte b : digest) {
            System.out.format("%02x", b);
Copy The Code & Try With Live Editor


[Solved] Prime Checker in Java solution in Hackerrank - Hacerrank solution Java
[Solved] Solve Me First in Java solution in Hackerrank - Hacerrank solution Java