Java MD-5 with Explanation

22 May Java MD-5 with Explanation

Hello Friends, How are you? Today I will solve the HackerRank Java SHA-256 Problem with a straightforward explanation. In this article, you will get more than one approach to solve this problem. So let’s start- {tocify} $title={Table of Contents}  MD5 (Message-Digest algorithm 5) is a widely used cryptographic hash function with a 128-bit hash value. Here are some common uses for MD5:

• To store a one-way hash of a password.
• To provide some assurance that a transferred file has arrived intact.

MD5 is one in a series of message digest algorithms designed by Professor Ronald Rivest of MIT (Rivest, 1994); however, the security of MD5 has been severely compromised, most infamously by the Flame malware in 2012. The CMU Software Engineering Institute essentially considers MD5 to be “cryptographically broken and unsuitable for further use”. Given an alphanumeric string, s, denoting a password, compute and print its MD5 encryption value. A single alphanumeric string denoting s. String s consists of English alphabetic letters (i.e., [a – zA – Z]  and/or decimal digits (i.e., 0 through 9) only. Print the MD-5 encryption value of s on a new line.

HelloWorld {codeBox}

68e109f0f40ca72a15e05cc22786f8e6{codeBox}

Javarmi123{codeBox}

2da2d1e0ce7b4951a858ed2d547ef485{codeBox}

Approach I: Java MD-5 HackerRank Java Solution

// ========================
// Information
// ======================== // Name: Java MD-5 HackerRank Problem
// Direct Link: https://www.hackerrank.com/challenges/java-md5/problem
// Difficulty: Medium
// Max Score: 30
// Language: Java 8 // ========================
// Solution Start
// ======================== // Java MD-5 - Hacker Rank Solution Start import java.util.Scanner;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException; public class Solution { public static void main(String[] args) throws NoSuchAlgorithmException { /* Read and save the input String */ Scanner scan = new Scanner(System.in); String str = scan.next(); scan.close(); /* Encode the String using MD5 */ MessageDigest md = MessageDigest.getInstance("MD5"); md.update(str.getBytes()); byte[] digest = md.digest(); /* Print the encoded value in hexadecimal */ for (byte b : digest) { System.out.format("%02x", b); } }
} // Java MD-5 Hacker Rank Solution END
// MyEduWaves

Approach II: Java MD-5 HackerRank Java Solution

// ========================
// Information
// ======================== // Name: Java MD-5 HackerRank Problem
// Direct Link: https://www.hackerrank.com/challenges/java-md5/problem
// Difficulty: Medium
// Max Score: 30
// Language: Java 8 // ========================
// Solution Start
// ======================== // Java MD-5 - Hacker Rank Solution Start import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;
import java.security.MessageDigest; public class Solution { private static String convertByteToHex(byte[] byteData) { StringBuilder sb = new StringBuilder(); for (int i = 0; i < byteData.length; i++) { sb.append(Integer.toString((byteData[i] & 0xff) + 0x100, 16).substring(1)); } return sb.toString(); } public static void main(String[] args) { Scanner sc = new Scanner(System.in); String word = sc.next(); MessageDigest md; try { md = MessageDigest.getInstance("MD5"); System.out.println(convertByteToHex(md.digest(word.getBytes()))); } catch (Exception e) { } }
} // Java MD-5 Hacker Rank Solution END
// MyEduWaves