Md5 Hash and MessageDigest : MD5.xml « Security « Android

1. Android
2. Security
3. MD5.xml

Md5 Hash and MessageDigest

 
//package com.megagoodsoftware.smugmug.util;

import java.io.IOException;
import java.io.InputStream;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

import android.util.Log;

public class SmugMugUtil {
  public static String getMd5Hash(byte[] input) {
        try     {
                MessageDigest md = MessageDigest.getInstance("MD5");
                md.update(input);
                return getMd5Hash(md);
        } catch(NoSuchAlgorithmException e) {
                Log.e("MD5", e.getMessage());
                return null;
        }
  }

  public static String getMd5Hash(String string) {
    return getMd5Hash(string.getBytes());
  }
  
  public static String getMd5Hash(MessageDigest digest) {
      BigInteger number = new BigInteger(1, digest.digest());
      String md5 = number.toString(16);
           
      // need to pad the hash
      while (md5.length() < 32)
        md5 = "0" + md5;
           
      return md5;
  }
  
  public static String getMd5Hash(InputStream is) {
    byte[] buffer = new byte[8192];
    int read = 0;
    try {
      MessageDigest digest = MessageDigest.getInstance("MD5");
      while( (read = is.read(buffer)) > 0) {
        digest.update(buffer, 0, read);
      }
      return getMd5Hash(digest);
    } catch(IOException e) {
      throw new RuntimeException("Unable to process file for MD5", e);
    } catch (NoSuchAlgorithmException e) {
      throw new RuntimeException("Unable to process file for MD5", e);
    }
  }
  
}

   
  

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