Android SHA1 Hash Create SHA1(String str)

Description

SHA

Declaration

public static String SHA1(String str) 

Method Source Code

//package com.java2s;
import java.security.MessageDigest;

public class Main {
    public static String SHA1(String str) {
        return hash(str, "SHA-1");
    }//from   w w w.ja  va 2s  . c o  m

    public static String hash(String text, String algorithm) {

        try {

            MessageDigest md = MessageDigest.getInstance(algorithm);
            md.update(text.getBytes("iso-8859-1"), 0, text.length());
            byte[] hashBytes = md.digest();
            return convertToHex(hashBytes);

        } catch (Exception e) {
        }

        return "";

    }

    private static String convertToHex(byte[] data) {
        StringBuilder buf = new StringBuilder();
        for (byte b : data) {
            int halfbyte = (b >>> 4) & 0x0F;
            int two_halfs = 0;
            do {
                buf.append((0 <= halfbyte) && (halfbyte <= 9) ? (char) ('0' + halfbyte)
                        : (char) ('a' + (halfbyte - 10)));
                halfbyte = b & 0x0F;
            } while (two_halfs++ < 1);
        }
        return buf.toString();
    }
}

Related

1. sha512(String what_to_encode)
2. SHA1(String text)
3. dataDigest(String in)
4. SHA1(String s)