7a9daac56d
Fixes https://github.com/shaarli/Shaarli/issues/737 Added: - Base64Url utilities Fixed: - use URL-safe Base64 encoding/decoding functions - use byte representations for HMAC digests - all JWT parts are Base64Url-encoded See: - https://en.wikipedia.org/wiki/JSON_Web_Token - https://tools.ietf.org/html/rfc7519 - https://scotch.io/tutorials/the-anatomy-of-a-json-web-token - https://jwt.io/introduction/ - https://en.wikipedia.org/wiki/Base64#URL_applications - https://secure.php.net/manual/en/function.base64-encode.php#103849 Signed-off-by: VirtualTam <virtualtam@flibidi.net>
35 lines
714 B
PHP
35 lines
714 B
PHP
<?php
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namespace Shaarli;
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/**
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* URL-safe Base64 operations
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*
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* @see https://en.wikipedia.org/wiki/Base64#URL_applications
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*/
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class Base64Url
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{
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/**
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* Base64Url-encodes data
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*
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* @param string $data Data to encode
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*
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* @return string Base64Url-encoded data
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*/
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public static function encode($data) {
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return rtrim(strtr(base64_encode($data), '+/', '-_'), '=');
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}
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/**
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* Decodes Base64Url-encoded data
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*
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* @param string $data Data to decode
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*
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* @return string Decoded data
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*/
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public static function decode($data) {
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return base64_decode(str_pad(strtr($data, '-_', '+/'), strlen($data) % 4, '=', STR_PAD_RIGHT));
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}
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}
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