Encryption.java

package com.freemindcafe.security.sample2;

import java.net.URLEncoder;
import java.security.Provider;

import javax.crypto.Cipher;
import javax.crypto.SecretKey;

import org.apache.commons.codec.binary.Base64;

public class Encryption
{

    public static String encrypt(String value, String keyStorePath, String keyStoreType, String keyStorePassword, String secretKeyAlias) throws Exception {
        SecretKey sKey;
        Provider securityProvider = null;
        sKey = EncryptionUtil.readKeyFromKeystore(keyStorePath, keyStoreType, keyStorePassword, secretKeyAlias);
        securityProvider = EncryptionUtil.getSupportingSecurityProvider(keyStoreType);
        return encrypt(value, sKey, securityProvider);
    }
    
    public static String encrypt(String value, SecretKey secretKey, Provider securityProvider) throws Exception {
        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding", securityProvider);
        cipher.init(Cipher.ENCRYPT_MODE, secretKey);
        byte[] encryptedValue = cipher.doFinal( value.getBytes() );
        byte[] encodedValue = Base64.encodeBase64(encryptedValue);
        String encodedString = new String(encodedValue);
        String urlEncodedString = URLEncoder.encode(encodedString, "UTF8");
        return urlEncodedString;
    }
    
}