Ndtyjky

This is the Java code for the function which create a keyed hash digest, and I want to do the same but in PHP code.

Java code:

private String generateHash(final InputStream is, final int iteration,final String key) throws IOException,NoSuchAlgorithmException,InvalidKeyException {



                Mac sha256_HMAC;



                sha256_HMAC = Mac.getInstance(ALGORITHM);



                final SecretKeySpec secret_key = new SecretKeySpec(key.getBytes(), ALGORITHM);



                sha256_HMAC.init(secret_key);



                byte bytesBuffer = new byte[2048];



                int bytesRead = -1;



                while ((bytesRead = is.read(bytesBuffer)) != -1) {



                            sha256_HMAC.update(bytesBuffer, 0, bytesRead);



                }

                byte digestValue = sha256_HMAC.doFinal();



                 for (int i = 0; i < iteration; i++) {



                            sha256_HMAC.reset();



                            digestValue = sha256_HMAC.doFinal(digestValue);



                }



                return Base64.encodeBase64String(digestValue);

    }

This the PHP code I have tried, but the output of both code are not same.

And also that I think I'm missing something somewhere because I don't know alternative for each code statement of Java in PHP:

 function generateHash($file, $iteration, $key){

                        //$hash = hash_hmac('sha256', 'hello, world!', 'mykey');



                        $inithash=hash_init('SHA256',1,$key);



                        //mb_strlen($string, '8bit')



                        while ($buffer=fread($file,"2048")) {

                            hash_update($inithash, $buffer);

                        }



                        $hash = hash_final($inithash);

                        $hashbyte = unpack('C*',$hash);

                        for($i=0;$i<$iteration;$i++)

                        {

                            //unset($hashbyte);

                            $inithash=hash_init('SHA256');

                            $inithash = hash_final($inithash);



                        }



                        return base64_encode($inithash);

                    }