HR자바 Java SHA-256

개요

HR자바 Java SHA-256

• https://www.hackerrank.com/challenges/sha-256/problem
• 참고: 자바 sha256()

해커랭크 Java

#	문제	비고
HR자바 Advanced e
53	HR자바 Java Varargs - Simple Addition
54	HR자바 Java Reflection - Attributes
55	HR자바 Can You Access?
56	HR자바 Prime Checker
57	HR자바 Java Factory Pattern
58	HR자바 Java Singleton Pattern
59	HR자바 Java Visitor Pattern
60	HR자바 Java Annotations
61	HR자바 Covariant Return Types
62	HR자바 Java Lambda Expressions
63	HR자바 Java MD5
64	HR자바 Java SHA-256

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import java.io.*;
import java.util.*;

public class Solution {
    static String sha256(String s) {
        java.security.MessageDigest md;
        try { md = java.security.MessageDigest.getInstance("SHA-256"); }
        catch (Exception e) { return null; }
        md.update(s.getBytes());
        String result = (new java.math.BigInteger(1, md.digest())).toString(16);
        while(result.length()<64) { result = "0" + result; }
        return result;
    }
    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();
        System.out.println( sha256(str) );
    }
}