class OAuthSignatureMethod_RSA_SHA1 in OAuth 1.0 6

Hierarchy

• class \OAuthSignatureMethod
  • class \OAuthSignatureMethod_RSA_SHA1

File

./OAuth.php, line 101

class OAuthSignatureMethod_RSA_SHA1 extends OAuthSignatureMethod {

  /*{{{*/
  public function get_name() {

    /*{{{*/
    return "RSA-SHA1";
  }

  /*}}}*/
  protected function fetch_public_cert(&$request) {

    /*{{{*/

    // not implemented yet, ideas are:
    // (1) do a lookup in a table of trusted certs keyed off of consumer
    // (2) fetch via http using a url provided by the requester
    // (3) some sort of specific discovery code based on request
    //
    // either way should return a string representation of the certificate
    throw Exception("fetch_public_cert not implemented");
  }

  /*}}}*/
  protected function fetch_private_cert(&$request) {

    /*{{{*/

    // not implemented yet, ideas are:
    // (1) do a lookup in a table of trusted certs keyed off of consumer
    //
    // either way should return a string representation of the certificate
    throw Exception("fetch_private_cert not implemented");
  }

  /*}}}*/
  public function build_signature(&$request, $consumer, $token) {

    /*{{{*/
    $base_string = $request
      ->get_signature_base_string();

    // Fetch the private key cert based on the request
    $cert = $this
      ->fetch_private_cert($request);

    //Pull the private key ID from the certificate
    $privatekeyid = openssl_get_privatekey($cert);

    //Check the computer signature against the one passed in the query
    $ok = openssl_sign($base_string, $signature, $privatekeyid);

    //Release the key resource
    openssl_free_key($privatekeyid);
    return base64_encode($signature);
  }

  /*}}}*/
  public function check_signature(&$request, $consumer, $token, $signature) {

    /*{{{*/
    $decoded_sig = base64_decode($signature);
    $base_string = $request
      ->get_signature_base_string();

    // Fetch the public key cert based on the request
    $cert = $this
      ->fetch_public_cert($request);

    //Pull the public key ID from the certificate
    $publickeyid = openssl_get_publickey($cert);

    //Check the computer signature against the one passed in the query
    $ok = openssl_verify($base_string, $decoded_sig, $publickeyid);

    //Release the key resource
    openssl_free_key($publickeyid);
    return $ok == 1;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
OAuthSignatureMethod_RSA_SHA1::build_signature	public	function
OAuthSignatureMethod_RSA_SHA1::check_signature	public	function	Overrides OAuthSignatureMethod::check_signature
OAuthSignatureMethod_RSA_SHA1::fetch_private_cert	protected	function		1
OAuthSignatureMethod_RSA_SHA1::fetch_public_cert	protected	function		1
OAuthSignatureMethod_RSA_SHA1::get_name	public	function