friendica-addons/twitter/vendor/abraham/twitteroauth/src/HmacSha1.php

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<?php
/**
* The MIT License
* Copyright (c) 2007 Andy Smith
*/
namespace Abraham\TwitterOAuth;
/**
* The HMAC-SHA1 signature method uses the HMAC-SHA1 signature algorithm as defined in [RFC2104]
* where the Signature Base String is the text and the key is the concatenated values (each first
* encoded per Parameter Encoding) of the Consumer Secret and Token Secret, separated by an '&'
* character (ASCII code 38) even if empty.
* - Chapter 9.2 ("HMAC-SHA1")
*/
class HmacSha1 extends SignatureMethod
{
/**
* {@inheritDoc}
*/
public function getName()
{
return "HMAC-SHA1";
}
/**
* {@inheritDoc}
*/
public function buildSignature(Request $request, Consumer $consumer, Token $token = null)
{
$signatureBase = $request->getSignatureBaseString();
$parts = [$consumer->secret, null !== $token ? $token->secret : ""];
$parts = Util::urlencodeRfc3986($parts);
$key = implode('&', $parts);
return base64_encode(hash_hmac('sha1', $signatureBase, $key, true));
}
}