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(PHP ActiveX) Verify and Unwrap S/MIME, and get Information about CMS SignatureDemonstrates calling the Verify method to verify and unwrap S/MIME. The MIME is restored to the original structure that it would have originally had prior to signing. The Verify method works with both detached signatures, as well as opaque/attached signatures. Calls LastJsonData to get information about the signature(s) that were verified.
<?php // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Mime') $mime = new COM("Chilkat.Mime"); // Load the signed MIME from a file... $success = $mime->LoadMimeFile('qa_data/mime/detached_sig.eml'); if ($success == 0) { print $mime->LastErrorText . "\n"; exit; } // Verify the S/MIME and restore the MIME // to the structure/content it had prior to signing. $verified = $mime->Verify(); if ($verified == 0) { print $mime->LastErrorText . "\n"; exit; } // Examine the details of what was verified. // json is a Chilkat.JsonObject $json = $mime->LastJsonData(); $json->EmitCompact = 0; print $json->emit() . "\n"; // The code to parse the following JSON (i.e. extract desired information) is shown below.. // { // "pkcs7": { // "verify": { // "certs": [ // { // "issuerCN": "VeriSign Class 1 Public Primary Certification Authority - G3", // "serial": "0702A21A85B84B659E180A6EE6F5A365" // }, // { // "issuerCN": "VeriSign Class 1 Public Primary Certification Authority - G3", // "serial": "008B5B75568454850B00CFAF3848CEB1A4" // }, // { // "issuerCN": "Symantec Class 1 Individual Subscriber CA - G5", // "serial": "619C55C32FF6BD1A7B7E0330D21C8F3C" // } // ], // "digestAlgorithms": [ // "sha1" // ], // "signerInfo": [ // { // "cert": { // "serialNumber": "619C55C32FF6BD1A7B7E0330D21C8F3C", // "issuerCN": "Symantec Class 1 Individual Subscriber CA - G5", // "digestAlgOid": "1.3.14.3.2.26", // "digestAlgName": "SHA1" // }, // "contentType": "1.2.840.113549.1.7.1", // "signingTime": "160428055000Z", // "messageDigest": "2hJJVmO/jtaJV5uCKMFzIkRRvtY=", // "signingAlgOid": "1.2.840.113549.1.1.1", // "signingAlgName": "RSA-PKCSV-1_5", // "authAttr": { // "1.2.840.113549.1.9.3": { // "name": "contentType", // "oid": "1.2.840.113549.1.7.1" // }, // "1.2.840.113549.1.9.5": { // "name": "signingTime", // "utctime": "160428055000Z" // }, // "1.2.840.113549.1.9.4": { // "name": "messageDigest", // "digest": "2hJJVmO/jtaJV5uCKMFzIkRRvtY=" // }, // "1.2.840.113549.1.9.15": { // "der": "MFAwCwYJYIZIAWUDBAECMAoGCCqGSIb3DQMHMA4GCCqGSIb3DQMCAgIAgDANBggqhkiG9w0DAgIBQDAHBgUrDgMCBzANBggqhkiG9w0DAgIBKA==" // }, // "1.3.6.1.4.1.311.16.4": { // "der": "MIG7MIG...7fgMw0hyPPA==" // } // } // } // ] // } // } // } // Use this online tool to generate parsing code from sample JSON: // Generate Parsing Code from JSON // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.DtObj') $signingTime = new COM("Chilkat.DtObj"); // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.DtObj') $authAttrSigningTimeUtctime = new COM("Chilkat.DtObj"); $i = 0; $count_i = $json->SizeOfArray('pkcs7.verify.certs'); while ($i < $count_i) { $json->I = $i; $issuerCN = $json->stringOf('pkcs7.verify.certs[i].issuerCN'); $serial = $json->stringOf('pkcs7.verify.certs[i].serial'); $i = $i + 1; } $i = 0; $count_i = $json->SizeOfArray('pkcs7.verify.digestAlgorithms'); while ($i < $count_i) { $json->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->I = $i; $certSerialNumber = $json->stringOf('pkcs7.verify.signerInfo[i].cert.serialNumber'); $certIssuerCN = $json->stringOf('pkcs7.verify.signerInfo[i].cert.issuerCN'); $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'); $json->DtOf('pkcs7.verify.signerInfo[i].signingTime',0,$signingTime); $messageDigest = $json->stringOf('pkcs7.verify.signerInfo[i].messageDigest'); $signingAlgOid = $json->stringOf('pkcs7.verify.signerInfo[i].signingAlgOid'); $signingAlgName = $json->stringOf('pkcs7.verify.signerInfo[i].signingAlgName'); $authAttrContentTypeName = $json->stringOf('pkcs7.verify.signerInfo[i].authAttr.\'1.2.840.113549.1.9.3\'.name'); $authAttrContentTypeOid = $json->stringOf('pkcs7.verify.signerInfo[i].authAttr.\'1.2.840.113549.1.9.3\'.oid'); $authAttrSigningTimeName = $json->stringOf('pkcs7.verify.signerInfo[i].authAttr.\'1.2.840.113549.1.9.5\'.name'); $json->DtOf('pkcs7.verify.signerInfo[i].authAttr.\'1.2.840.113549.1.9.5\'.utctime',0,$authAttrSigningTimeUtctime); $authAttrMessageDigestName = $json->stringOf('pkcs7.verify.signerInfo[i].authAttr.\'1.2.840.113549.1.9.4\'.name'); $authAttrMessageDigestDigest = $json->stringOf('pkcs7.verify.signerInfo[i].authAttr.\'1.2.840.113549.1.9.4\'.digest'); $authAttr1_2_840_113549_1_9_15Der = $json->stringOf('pkcs7.verify.signerInfo[i].authAttr.\'1.2.840.113549.1.9.15\'.der'); $authAttr1_3_6_1_4_1_311_16_4Der = $json->stringOf('pkcs7.verify.signerInfo[i].authAttr.\'1.3.6.1.4.1.311.16.4\'.der'); $i = $i + 1; } ?> |
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