Generates a hash derived from the input parameter with the specified algorithm - Android java.security

Android examples for java.security:Hash

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Description

Generates a hash derived from the input parameter with the specified algorithm

Demo Code


//package com.java2s;
import java.io.IOException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import android.util.Base64;

public class Main {
    /**/*from w  ww  . j  av  a  2 s .c  om*/
     * Generates a hash derived from the input parameter with the specified algorithm
     * @param password The password to be hashed
     * @return A hashed string
     * @throws NoSuchAlgorithmException if the algorithm used doesn't exist
     * @throws IOException if the data can't be converted to a string
     */
    public static String generateHash(String password)
            throws NoSuchAlgorithmException, IOException {
        MessageDigest mdSha1 = null;
        mdSha1 = MessageDigest.getInstance("SHA-1");
        mdSha1.update(password.getBytes("ASCII"));
        byte[] data = mdSha1.digest();
        return convertToHex(data);
    }

    /**
     * Convert a byte array to a string
     * @param data The data to be converted
     * @return A string representation of the array
     * @throws IOException If the array can't be converted to a string
     */
    private static String convertToHex(byte[] data) throws IOException {
        return Base64.encodeToString(data, 0).trim();
    }
}

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