Java SHA 256 HackerRank Solution

Hello Programmers, In this post, you will know how to solve the Java SHA 256 HackerRank Solution. This problem is a part of the HackerRank Java Programming Series.

report this ad

One more thing to add, don’t directly look for the solutions, first try to solve the problems of Hackerrank by yourself. If you find any difficulty after trying several times, then you can look for solutions.

Java SHA 256 HackerRank Solution

report this adObjective

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 -bit ( byte) hashing algorithm which can calculate a hash code for an input of up to  bits. It undergoes  rounds of hashing and calculates a hash code that is a -digit hexadecimal number.

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

Input Format

A single alphanumeric string denoting .

Constraints

• String  consists of English alphabetic letters (i.e.,  and/or decimal digits (i.e.,  through ) only.

Output Format

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

Sample Input 0

HelloWorld

Sample Output 0

872e4e50ce9990d8b041330c47c9ddd11bec6b503ae9386a99da8584e9bb12c4

Sample Input 1

Javarmi123

Sample Output 1

f1d5f8d75bb55c777207c251d07d9091dc10fe7d6682db869106aacb4b7df678

Java SHA 256 HackerRank Solution

import java.util.Scanner;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class Solution {
    public static void main(String[] args) throws NoSuchAlgorithmException {
        Scanner scan = new Scanner(System.in);
        String str = scan.next();
        scan.close();
        /* Encode the String using SHA-256 */
        MessageDigest md = MessageDigest.getInstance("SHA-256");
        md.update(str.getBytes());
        byte[] digest = md.digest();
        /* Print the encoded value in hexadecimal */
        for (byte b : digest) {
            System.out.format("%02x", b);
        }
    }
}

Disclaimer: The above Problem (Java SHA 256) is generated by Hackerrank but the Solution is Provided by BrokenProgrammers. This tutorial is only for Educational and Learning purposes.

Next: Java MD5 HackerRank Solution