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(PHP Extension) Sign String to create a CAdES-T SignatureThis example will sign a string to create a CAdEST-T signature. Note: This example requires Chilkat v9.5.0.78 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 example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. $crypt = new CkCrypt2(); // This example will use the certificate + private key currently inserted into a smartcard reader. $cert = new CkCert(); // If we wish to provide the smartcard PIN (otherwise the user will be prompted by the operating system). $cert->put_SmartCardPin('000000'); $success = $cert->LoadFromSmartcard(''); if ($success != true) { print $cert->lastErrorText() . "\n"; exit; } // Note: It is also possible to use certs from .pfx/.p12, .pem, or other sources such as // pre-installed Windows certificates. $success = $crypt->SetSigningCert($cert); // Use SHA-256 rather than the default of SHA-1 $crypt->put_HashAlgorithm('sha256'); // Create JSON that tells Chilkat what signing attributes to include: $attrs = new CkJsonObject(); $attrs->UpdateBool('contentType',true); $attrs->UpdateBool('signingTime',true); $attrs->UpdateBool('messageDigest',true); $attrs->UpdateBool('signingCertificateV2',true); // A CAdES-T signature is one that includes a timestampToken created by an online TSA (time stamping authority). // We must include the TSA's URL, as well as a few options to indicate what is desired. // Except for the TSA URL, the options shown here are typically what you would need. $attrs->UpdateBool('timestampToken.enabled',true); $attrs->UpdateString('timestampToken.tsaUrl','https://freetsa.org/tsr'); $attrs->UpdateBool('timestampToken.addNonce',false); $attrs->UpdateBool('timestampToken.requestTsaCert',true); $attrs->UpdateString('timestampToken.hashAlg','sha256'); $crypt->put_SigningAttributes($attrs->emit()); $strToSign = 'THIS IS MY ID'; $bd = new CkBinData(); $bd->AppendString($strToSign,'utf-8'); // This creates the CAdES-T signature. During the signature creation, it // communicates with the TSA to get a timestampToken. // The contents of bd are signed and replaced with the CAdES-T signature (which embeds the original content). $success = $crypt->OpaqueSignBd($bd); if ($success != true) { print $crypt->lastErrorText() . "\n"; exit; } // Get the signature in base64 format: print $bd->getEncoded('base64_mime') . "\n"; // Or save the signature to a file. $bd->WriteFile('qa_output/cades-t_sample.p7m'); print 'Success.' . "\n"; ?> |
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