aes cbc 128 bit algorthim for php ,iphone and android

Question

1.00/5 (3 votes)

See more:

Please give the code for all three php iphone and android

have to display the same encrypt code...

and the resultant value has to reproduce the same text what we given for encryption

i had java android code and iphone code has result the same value

Java

package com.example.aesalg;

import java.security.MessageDigest;
import java.security.spec.AlgorithmParameterSpec;

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;

import android.util.Base64;

public class AESCrypt {

    private final Cipher cipher;
    private final SecretKeySpec key;
    private AlgorithmParameterSpec spec;

    public AESCrypt(String password) throws Exception
    {
        // hash password with SHA-256 and crop the output to 128-bit for key
        MessageDigest digest = MessageDigest.getInstance("SHA-256");
        digest.update(password.getBytes("UTF-8"));
        byte[] keyBytes = new byte[32];
        System.arraycopy(digest.digest(), 0, keyBytes, 0, keyBytes.length);

        cipher = Cipher.getInstance("AES/CBC/PKCS7Padding");
        key = new SecretKeySpec(keyBytes, "AES");
        spec = getIV();
    }

    public AlgorithmParameterSpec getIV()
    {
        byte[] iv = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, };
        IvParameterSpec ivParameterSpec;
        ivParameterSpec = new IvParameterSpec(iv);

        return ivParameterSpec;
    }

    public String encrypt(String plainText) throws Exception
    {
        cipher.init(Cipher.ENCRYPT_MODE, key, spec);
        byte[] encrypted = cipher.doFinal(plainText.getBytes("UTF-8"));
        String encryptedText = new String(Base64.encode(encrypted, Base64.DEFAULT), "UTF-8");
        System.out.println("Encrypt Data"+ encryptedText);
        return encryptedText;
    }

    public String decrypt(String cryptedText) throws Exception
    {
        cipher.init(Cipher.DECRYPT_MODE, key, spec);
        byte[] bytes = Base64.decode(cryptedText, Base64.DEFAULT);
        byte[] decrypted = cipher.doFinal(bytes);
        String decryptedText = new String(decrypted, "UTF-8");
        System.out.println("Encrypt Data"+ decryptedText);
        return decryptedText;
    }
}

but i can t able to get in php, i am getting result for

text:muthu
key:u

in mobile i am getting result as

MhPPaUb7eMbol6zUKjHcrA==

this is my php code

PHP

$data_to_encrypt = "muthu";
$key128 = "u";
$iv = "0000000000000000";

$cc = $data_to_encrypt;
$key = $key128;
$iv =  $iv;
$length = strlen($cc);

$cipher = mcrypt_module_open(MCRYPT_RIJNDAEL_128,'','cbc',$iv);

mcrypt_generic_init($cipher, $key, $iv);
$encrypted = base64_encode(mcrypt_generic($cipher,$cc));
mcrypt_generic_deinit($cipher);

mcrypt_generic_init($cipher, $key, $iv);
$decrypted = mdecrypt_generic($cipher,base64_decode($encrypted));
mcrypt_generic_deinit($cipher);

echo "encrypted: " . $encrypted;
echo "";
echo "length:".strlen($encrypted);
echo "<br />";
echo "decrypted: " . substr($decrypted, 0, $length);

i am getting result as

hlxZgzP+0afprqIzYyEKSw==

help me to finish

thanks in advance

Posted 28-Aug-13 23:41pm

Member 10239759

Updated 29-Aug-13 2:39am

Prasad Khandekar

v4

Add a Solution

Comments

[no name] 29-Aug-13 6:38am

"its very urgent", no it's not urgent at all. Your lack of planning does not make it an emergency for anyone else.

Member 10239759 29-Aug-13 7:07am

ok whatever it might be i need the solution for this problem can you help me

[no name] 29-Aug-13 7:21am

And what problem is that? You just dumped your code here and rudely asked us to do your job for you. No mention of what input you were putting in, what output you are getting, how much you are paying for someone to do your job for you, how you are going to pay them... Not that you will find someone here that will do this for you anyway.

Member 10239759 29-Aug-13 7:26am

i am getting result for

text:muthu
key:u

in mobile i am getting result as

MhPPaUb7eMbol6zUKjHcrA==

$data_to_encrypt = "muthu";
$key128 = "u";
$iv = "0000000000000000";

$cc = $data_to_encrypt;
$key = $key128;
$iv = $iv;
$length = strlen($cc);

$cipher = mcrypt_module_open(MCRYPT_RIJNDAEL_128,'','cbc',$iv);

mcrypt_generic_init($cipher, $key, $iv);
$encrypted = base64_encode(mcrypt_generic($cipher,$cc));
mcrypt_generic_deinit($cipher);

mcrypt_generic_init($cipher, $key, $iv);
$decrypted = mdecrypt_generic($cipher,base64_decode($encrypted));
mcrypt_generic_deinit($cipher);

echo "encrypted: " . $encrypted;
echo "<br/?-->";
echo "length:".strlen($encrypted);
echo "<br/>";
echo "decrypted: " . substr($decrypted, 0, $length);

this is my php code
i am getting hlxZgzP+0afprqIzYyEKSw==

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Prasad Khandekar · Accepted Answer · 2013-08-29T03:39:00

Hello Member,

I think PHP mcrypt function uses a zero byte padded input string. So in your java code set the transformation as AES/CBC/NoPadding and then pad the input string with 0. Following code snippets yields identical results.

PHP Code

PHP

<?php
$plaintext = "muthu";
$key256    = "12345678901234561234567890123456";
$iv        = "1234567890123456";

$plaintext_utf8 = utf8_encode($plaintext);
$cipher = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', 'cbc', $iv);
$ciphertext = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key256, $plaintext_utf8, MCRYPT_MODE_CBC, $iv);
echo base64_encode($ciphertext);
?>

Java Code