Algorithm
Problem Name:
In this HackerRank Functions in Java programming problem solution,
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.
Input Format
A single alphanumeric string denoting s.
Constraints
- 6 <= |s| <= 20
- String s consists of English alphabetic letters (i.e., [a - zA - Z] and/or decimal digits (i.e., 0 through 9) only.
Output Format
Print the MD5 encryption value of
on a new line.
Sample Input 0
HelloWorld
Sample Output 0
68e109f0f40ca72a15e05cc22786f8e6
Sample Input 1
Javarmi123
Sample Output 1
2da2d1e0ce7b4951a858ed2d547ef485
Code Examples
#1 Code Example with Java Programming
Code -
Java Programming
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);
}
}
}