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