alfin_crypt.php

<?php

/**
 * Returns an encrypted & utf8-encoded
 */
function encrypt($pure_string, $encryption_key) {
    $iv_size = mcrypt_get_iv_size(MCRYPT_BLOWFISH, MCRYPT_MODE_ECB);
    $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);
    $encrypted_string = mcrypt_encrypt(MCRYPT_BLOWFISH, $encryption_key, utf8_encode($pure_string), MCRYPT_MODE_ECB, $iv);
    return $encrypted_string;
}

/**
 * Returns decrypted original string
 */
function decrypt($encrypted_string, $encryption_key) {
    $iv_size = mcrypt_get_iv_size(MCRYPT_BLOWFISH, MCRYPT_MODE_ECB);
    $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);
    $decrypted_string = mcrypt_decrypt(MCRYPT_BLOWFISH, $encryption_key, $encrypted_string, MCRYPT_MODE_ECB, $iv);
    return $decrypted_string;
}

/**
 * Alfin encrypt and return to hexa
 */
function alfin_e($kalimat){
	$kunci = "Aku Sangat Sayang Kamu :-D";
	return bin2hex(encrypt($kalimat, $kunci));
}

/**
 * Alfin decrypt and return to original
 */
function alfin_d($kalimat){
	$kunci = "Aku Sangat Sayang Kamu :-D";
	return decrypt(hex2bin($kalimat), $kunci);
}
?>