In this HackerRank Java MD5 problem in java programming 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.
HackerRank Java8 MD5 problem solution.
import java.io.*;
import java.util.*;
import java.security.MessageDigest;
import java.util.Scanner;
public class Solution {
public static void main(String[] args) {
/* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */
Scanner sc = new Scanner(System.in);
String str = sc.next();
sc.close();
try {
MessageDigest md = MessageDigest.getInstance("MD5");
md.update(str.getBytes());
// return bytesToHex(md.digest
byte[] digest = md.digest();
for (byte b : digest) {
System.out.printf("%02x", b);
}
} catch (Exception ex) {
throw new RuntimeException(ex);
}
}
}
Second solution in java 7 programming.
import java.security.MessageDigest; import java.nio.charset.Charset; import java.util.Scanner; public class Solution { public static void main(String[] args) { Scanner in = new Scanner(System.in); String message = in.nextLine(); in.close(); try { MessageDigest messageDigest = MessageDigest.getInstance("MD5"); messageDigest.update(message.getBytes()); byte[] hash = messageDigest.digest(); for (byte b : hash) { System.out.printf("%02x", b); } } catch (Exception e) {} } }