PHP Crypto library

You will find the integration of :

• scrypt (Zend Framework (http://framework.zend.com/))
• pbkdf2 (Zend Framework (http://framework.zend.com/))
• hdkf
• sign / check signature

This library is created for the gaspSync projet

unit Test

This library use the codeception tools.

I have implemented the common test vector.

composer dump-autoload
codecept run

The test vector will fail for now, they are in comment but present in test file :

• test scrypt vector 4
• test scrypt vector 5
• test scrypt vector6
• test scrypt vector7
• test scrypt vector4

Sign / check signature

Function definition :

public function sign($privateKeyPem,$data,$signature_alg=OPENSSL_ALGO_DSS1)
public function verifySign($publicKeyPem,$data,$signature,$signature_alg=OPENSSL_ALGO_DSS1){

Expand function

• hkdf Experimental HKDF implementation for CodeIgniter's encryption

$hkdf = \Crypto\Crypto::HKDF($secretToken, $hashmode,null,$hashmod_digest_size,self::HKDF_INFO_SIGNING);

rfc5869 : HKDF

• scrypt function

$scrypt =  \Crypto\Crypto::myScrypt($password, $salt,64*1024, 8, 1, 32);

• the function do a hex2bin() for the $password and $salt.
• the function will use DomBlack PHP module if available (don't forget to add it to command line for the tests)

• pbkdf2 function

$crypto = new \Crypto\Crypto();
$key = $crypto->Pbkdf2($hash, $pass=null, $salt=null, $iterations, $length)

• Diverse function :

  function hexdecKey($arrayKey){
  function bchexdec($hex)
  function bcdechex($number)

Key manipulation

• Creating private / public key DSA (can be used for the sign / verifySign function):

\CryptoCrypto::generateNewDSAKey('./keyDirectory');

  function addPublicHeaderFooter($Key)
  function removeHeaderFooter($pemKey)
  function PemToDer($Pem)
  function DerToKey($der)
  function viewPEMElement($PEMKey)
  function make_printable($result, $i = 0)
  function print_line($start, $depth, $length, $headerlength, $constructed, $type, $extra = false)

Copyright

When not explicitly set, files are placed under a 3 clause BSD license