Java SHA1 sha1(String input)

Description

sha

License

Apache License

Declaration

public static String sha1(String input) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Formatter;

public class Main {
    public static String sha1(String input) {
        MessageDigest sha1;/*w w w . j  av a2 s.c  o m*/
        try {
            sha1 = MessageDigest.getInstance("SHA1");
        } catch (NoSuchAlgorithmException e) {
            return null;
        }
        //not sure what encoding is used in input..
        byte[] ret = sha1.digest(input.getBytes());
        return byteArray2Hex(ret);
    }

    private static String byteArray2Hex(byte[] hash) {
        Formatter formatter = new Formatter();
        for (byte b : hash) {
            formatter.format("%02x", b);
        }
        return formatter.toString();
    }
}

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