Onleihe LCP license code verification

rich1.0phorkiehttps://p.cweiske.de/Onleihe LCP license code verificationChristian Weiske86400900900 <link rel="stylesheet" href="https://p.cweiske.de/css/embed.css"/> <div class="phork" id="725"> <div class="phork-file"> <div class="phork-content"> <div class="document"> <a class="reference external" href="https://github.com/edrlab/thorium-reader/blob/1a01c03e74d1504b0a521898f1ca76b5f6484cfc/src/main/services/lcp.ts#L624">https://github.com/edrlab/thorium-reader/blob/1a01c03e74d1504b0a521898f1ca76b5f6484cfc/src/main/services/lcp.ts#L624</a> <a class="reference external" href="https://github.com/readium/r2-lcp-js/blob/0b4533e496d9078566369b28ddf6cf05be40d3c2/src/parser/epub/lcp.ts">https://github.com/readium/r2-lcp-js/blob/0b4533e496d9078566369b28ddf6cf05be40d3c2/src/parser/epub/lcp.ts</a> </div> </div> <div class="phork-meta"> <a href="https://p.cweiske.de/725/rev-raw/e01925f734046b5012054cbebb8daba7df6f6989/README.rst" style="float: right">view raw source</a> <a href="https://p.cweiske.de/725#README.rst">README.rst</a> </div> </div> <div class="phork-file"> <div class="phork-content"> <style type="text/css">/** * GeSHi (C) 2004 - 2007 Nigel McNie, 2007 - 2014 Benny Baumann * (http://qbnz.com/highlighter/ and http://geshi.org/) */ .php .de1, .php .de2 {font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;} .php {font-family:monospace;} .php .imp {font-weight: bold; color: red;} .php li, .php .li1 {color: #DDD;} .php .ln {width:1px;text-align:right;margin:0;padding:0 2px;vertical-align:top;} .php .kw1 {color: #b1b100;} .php .kw2 {color: #000000; font-weight: bold;} .php .kw3 {color: #990000;} .php .kw4 {color: #009900; font-weight: bold;} .php .co1 {color: #666666; font-style: italic;} .php .co2 {color: #666666; font-style: italic;} .php .co3 {color: #0000cc; font-style: italic;} .php .co4 {color: #009933; font-style: italic;} .php .coMULTI {color: #666666; font-style: italic;} .php .es0 {color: #000099; font-weight: bold;} .php .es1 {color: #000099; font-weight: bold;} .php .es2 {color: #660099; font-weight: bold;} .php .es3 {color: #660099; font-weight: bold;} .php .es4 {color: #006699; font-weight: bold;} .php .es5 {color: #006699; font-weight: bold; font-style: italic;} .php .es6 {color: #009933; font-weight: bold;} .php .es_h {color: #000099; font-weight: bold;} .php .br0 {color: #009900;} .php .sy0 {color: #339933;} .php .sy1 {color: #000000; font-weight: bold;} .php .st0 {color: #0000ff;} .php .st_h {color: #0000ff;} .php .nu0 {color: #cc66cc;} .php .nu8 {color: #208080;} .php .nu12 {color: #208080;} .php .nu19 {color:#800080;} .php .me1 {color: #004000;} .php .me2 {color: #004000;} .php .re0 {color: #000088;} .php span.xtra { display:block; } </style><div class="code"><table class="php"><tbody><tr class="li1"><td class="ln"><pre class="de1">1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 </pre></td><td class="de1"><pre class="de1"><?php /**  * Verify that a Onleihe CODE is correct (able to decrypt the .epub file)  */ $userPassphrase = 'FIXME';//Bitte geben Sie hier Ihren Onleihe CODE ein.   $lcplFile = 'example/81f292a0-5989-4d02-8749-398cc0b5057f.lcpl'; $lcpl = <a href="http://www.php.net/json_decode">json_decode</a>(<a href="http://www.php.net/file_get_contents">file_get_contents</a>($lcplFile)); $licenseId = $lcpl->id; $encLicenseId = $lcpl->encryption->user_key->key_check;   if ($lcpl->encryption->user_key->algorithm != 'http://www.w3.org/2001/04/xmlenc#sha256') {     echo "Unsupported user key hash algorithm\n";     <a href="http://www.php.net/exit">exit</a>(1); } $userKey = <a href="http://www.php.net/hash">hash</a>('sha256', $userPassphrase);   if ($lcpl->encryption->content_key->algorithm != 'http://www.w3.org/2001/04/xmlenc#aes256-cbc') {     echo "Unsupported content key encryption algorithm\n";     <a href="http://www.php.net/exit">exit</a>(1); }     /**  * https://www.w3.org/TR/xmlenc-core1/#sec-AES  *  * [AES] is used in the Cipher Block Chaining (CBC) mode with a 128 bit  * initialization vector (IV).  * The resulting cipher text is prefixed by the IV.  * If included in XML output, it is then base64 encoded.  */ $encLicenseIdBytes = <a href="http://www.php.net/base64_decode">base64_decode</a>($encLicenseId); $encIv = <a href="http://www.php.net/substr">substr</a>($encLicenseIdBytes, 0, 128 / 8); $encLicenseIdBytesData = <a href="http://www.php.net/substr">substr</a>($encLicenseIdBytes, 128 / 8);   $decrypted = openssl_decrypt(     $encLicenseIdBytesData, 'AES-256-CBC',     hex2bin($userKey),     OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING,     $encIv ); if ($decrypted === false) {     echo "Decryption failed\n";     <a href="http://www.php.net/exit">exit</a>(1); } $padLength = <a href="http://www.php.net/unpack">unpack</a>('C', <a href="http://www.php.net/substr">substr</a>($decrypted, -1))[1];   $decrypted = <a href="http://www.php.net/substr">substr</a>($decrypted, 0, -$padLength); echo "License ID:   $licenseId\n"; echo "Decrypted ID: $decrypted\n"; ?>  </pre></td></tr></tbody></table></div> </div> <div class="phork-meta"> <a href="https://p.cweiske.de/725/rev-raw/e01925f734046b5012054cbebb8daba7df6f6989/verify-onleihe-code.php" style="float: right">view raw source</a> <a href="https://p.cweiske.de/725#verify-onleihe-code.php">verify-onleihe-code.php</a> </div> </div> </div>