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(PHP Extension) P7S - Access Signature Information (date/time, certificate used, etc.)Examine a PKCS7 signature (.p7s) and get information about it. Note: This example requires Chilkat v9.5.0.75 or greater.
<?php // The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number. // For example, if using Chilkat v9.5.0.48, then include as shown here: include("chilkat_9_5_0.php"); // This requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // First load the .p7s file into a BinData object.. $bd = new CkBinData(); $success = $bd->LoadFile('qa_data/p7s/sample.p7s'); if ($success != true) { print 'Failed to load .p7s file.' . "\n"; exit; } // IMPORTANT: This example requires Chilkat v9.5.0.75 or greater. $crypt = new CkCrypt2(); // Assuming this is a signature that contains the original data that was signed.. $success = $crypt->OpaqueVerifyBd($bd); if ($success != true) { print $crypt->lastErrorText() . "\n"; exit; } // Examine the LastJsonData after signature verification.. // json is a CkJsonObject $json = $crypt->LastJsonData(); $json->put_EmitCompact(false); print $json->emit() . "\n"; // -- // IMPORTANT: This example requires Chilkat v9.5.0.75 or greater. // -- // Sample output... // Go to http://tools.chilkat.io/jsonParse.cshtml // and paste the JSON into the online form to generate JSON parsing code. // { // "pkcs7": { // "verify": { // "digestAlgorithms": [ // "sha256" // ], // "signerInfo": [ // { // "cert": { // "serialNumber": "AAC5FC48C0FD8FBB", // "issuerCN": "AC ABCDEF RFB v5", // "issuerDN": "", // "digestAlgOid": "2.16.840.1.101.3.4.2.1", // "digestAlgName": "SHA-256" // }, // "contentType": "1.2.840.113549.1.7.1", // "signingTime": "180607195054Z", // "messageDigest": "trzyxXbZ96z2M4mncyZ7BNMV4yIT92+5sS27Fu64iG8=", // "signingAlgOid": "1.2.840.113549.1.1.11", // "signerDigest": "trzyxXbZ96z2M4mncyZ7BNMV4yIT92+5sS27Fu64iG8=" // }, // { // "cert": { // "serialNumber": "324FB38ABD59723F", // "issuerCN": "AC ABCDEF RFB v5", // "issuerDN": "", // "digestAlgOid": "2.16.840.1.101.3.4.2.1", // "digestAlgName": "SHA-256" // }, // "contentType": "1.2.840.113549.1.7.1", // "signingTime": "180608182517Z", // "messageDigest": "trzyxXbZ96z2M4mncyZ7BNMV4yIT92+5sS27Fu64iG8=", // "signingAlgOid": "1.2.840.113549.1.1.11", // "signerDigest": "trzyxXbZ96z2M4mncyZ7BNMV4yIT92+5sS27Fu64iG8=" // } // ] // } // } // } // $dt = new CkDateTime(); $i = 0; $count_i = $json->SizeOfArray('pkcs7.verify.digestAlgorithms'); while ($i < $count_i) { $json->put_I($i); $strVal = $json->stringOf('pkcs7.verify.digestAlgorithms[i]'); $i = $i + 1; } $i = 0; $count_i = $json->SizeOfArray('pkcs7.verify.signerInfo'); while ($i < $count_i) { $json->put_I($i); $certSerialNumber = $json->stringOf('pkcs7.verify.signerInfo[i].cert.serialNumber'); $certIssuerCN = $json->stringOf('pkcs7.verify.signerInfo[i].cert.issuerCN'); $certIssuerDN = $json->stringOf('pkcs7.verify.signerInfo[i].cert.issuerDN'); $certDigestAlgOid = $json->stringOf('pkcs7.verify.signerInfo[i].cert.digestAlgOid'); $certDigestAlgName = $json->stringOf('pkcs7.verify.signerInfo[i].cert.digestAlgName'); $contentType = $json->stringOf('pkcs7.verify.signerInfo[i].contentType'); $signingTime = $json->stringOf('pkcs7.verify.signerInfo[i].signingTime'); // The signingTime isin UTCTime format. // UTCTime values take the form of either "YYMMDDhhmm[ss]Z" or "YYMMDDhhmm[ss](+|-)hhmm" // Starting in Chilkat v9.5.0.77, the SetFromTimestamp method auto-recognizes the UTCTime format and parses it correctly. $success = $dt->SetFromTimestamp($signingTime); // To get the signingTime in other date/time formats, look at the online reference documentation for CkDateTime. // There are numerous methods such as GetAsDateTime, GetAsIso8601, GetAsUnixTime, GetAsRfc822, etc. $messageDigest = $json->stringOf('pkcs7.verify.signerInfo[i].messageDigest'); $signingAlgOid = $json->stringOf('pkcs7.verify.signerInfo[i].signingAlgOid'); $signerDigest = $json->stringOf('pkcs7.verify.signerInfo[i].signerDigest'); $i = $i + 1; } // println crypt.LastErrorText; print 'Success.' . "\n"; ?> |
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