69 lines
2.2 KiB
PHP
69 lines
2.2 KiB
PHP
<?php defined('SYSPATH') or die('No direct script access.');
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/**
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* The HMAC-SHA1 signature provides secure signing using the HMAC-SHA1
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* algorithm as defined by [RFC2104](http://tools.ietf.org/html/rfc2104).
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* It uses [OAuth_Request::base_string] as the text and [OAuth_Signature::key]
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* as the signing key.
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*
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* @package Kohana/OAuth
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* @category Signature
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* @author Kohana Team
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* @copyright (c) 2010 Kohana Team
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* @license http://kohanaframework.org/license
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* @since 3.0.7
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*/
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class Kohana_OAuth_Signature_HMAC_SHA1 extends OAuth_Signature {
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protected $name = 'HMAC-SHA1';
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/**
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* Generate a signed hash of the base string using the consumer and token
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* as the signing key.
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*
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* $sig = $signature->sign($request, $consumer, $token);
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*
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* [!!] This method implements [OAuth 1.0 Spec 9.2.1](http://oauth.net/core/1.0/#rfc.section.9.2.1).
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*
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* @param OAuth_Request request
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* @param OAuth_Consumer consumer
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* @param OAuth_Token token
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* @return string
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* @uses OAuth_Signature::key
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* @uses OAuth_Request::base_string
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*/
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public function sign(OAuth_Request $request, OAuth_Consumer $consumer, OAuth_Token $token = NULL)
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{
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// Get the signing key
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$key = $this->key($consumer, $token);
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// Get the base string for the signature
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$base_string = $request->base_string();
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// Sign the base string using the key
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return base64_encode(hash_hmac('sha1', $base_string, $key, TRUE));
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}
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/**
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* Verify a HMAC-SHA1 signature.
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*
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* if ( ! $signature->verify($signature, $request, $consumer, $token))
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* {
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* throw new Kohana_OAuth_Exception('Failed to verify signature');
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* }
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*
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* [!!] This method implements [OAuth 1.0 Spec 9.2.2](http://oauth.net/core/1.0/#rfc.section.9.2.2).
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*
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* @param string signature to verify
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* @param OAuth_Request request
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* @param OAuth_Consumer consumer
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* @param OAuth_Token token
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* @return boolean
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* @uses OAuth_Signature_HMAC_SHA1::sign
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*/
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public function verify($signature, OAuth_Request $request, OAuth_Consumer $consumer, OAuth_Token $token = NULL)
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{
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return $signature === $this->sign($request, $consumer, $token);
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}
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} // End OAuth_Signature_HMAC_SHA1
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