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(MFC) Validate CAdES-T Signature (.p7m)Validates a CAdES-T CMS signature and extracts the time-stamp token and gets information about it. Also validates the time-stamp token. Note: This example requires Chilkat v9.5.0.78 or greater.
#include <CkCrypt2.h> #include <CkJsonObject.h> #include <CkDtObj.h> void ChilkatSample(void) { CkString strOut; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. CkCrypt2 crypt; bool success; // Indicate that the CAdES-T timestamp tokens must also pass validation for the signature to be validated. CkJsonObject cmsOptions; cmsOptions.UpdateBool("ValidateTimestampTokens",true); crypt.put_CmsOptions(cmsOptions.emit()); // Validate the .p7m and extract the original signed data to an output file. // Note: The timestampToken is an unauthenticated attribute. See the code below that parses the LastJsonData // for details about examining timestampToken. success = crypt.VerifyP7M("qa_data/cades/CAdES-T/Signature-C-T-1.p7m","qa_output/out.dat"); // Get information about the CMS signature in the LastJsonData. // The detailed results of the signature validation are available in LastJsonData. // (If the non-success return status was caused by an error such as "file not found", then the // LastJsonData would be empty.) CkJsonObject *json = crypt.LastJsonData(); json->put_EmitCompact(false); strOut.append(json->emit()); strOut.append("\r\n"); // Here is a sample result: // See the parsing code below.. // Use this online tool to generate parsing code from sample JSON: // Generate Parsing Code from JSON // { // "pkcs7": { // "verify": { // "digestAlgorithms": [ // "sha256" // ], // "signerInfo": [ // { // "cert": { // "serialNumber": "00DCB814678CDB", // "issuerCN": "LevelBCAOK", // "issuerDN": "", // "digestAlgOid": "2.16.840.1.101.3.4.2.1", // "digestAlgName": "SHA256" // }, // "contentType": "1.2.840.113549.1.7.1", // "signingTime": "131203065741Z", // "messageDigest": "JJZt41Nt8VsYahP+Xti4rR3vBDkUfRd6gquItl6R5Os=", // "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": "131203065741Z" // }, // "1.2.840.113549.1.9.4": { // "name": "messageDigest", // "digest": "JJZt41Nt8VsYahP+Xti4rR3vBDkUfRd6gquItl6R5Os=" // }, // "1.2.840.113549.1.9.16.2.47": { // "name": "signingCertificateV2", // "der": "MIGIMIGFMIGCBCBJrxOU0w0dWGsVovjLv9QDH3syB5mLVv3grSYA40x9IDBeMFOkUTBPMQswCQYDVQQGEwJGUjENMAsGA1UEChMERVRTSTEcMBoGA1UECwwTUGx1Z3Rlc3RzXzIwMTMtMjAxNDETMBEGA1UEAxMKTGV2ZWxCQ0FPSwIHANy4FGeM2w==" // } // }, // "unauthAttr": { // "1.2.840.113549.1.9.16.2.14": { // "name": "timestampToken", // "der": "MIIL+AYJKoZI...u7CfcjURNTY=", // "verify": { // "digestAlgorithms": [ // "sha256" // ], // "signerInfo": [ // { // "cert": { // "serialNumber": "01AA4592D36C61", // "issuerCN": "RootCAOK", // "issuerDN": "", // "digestAlgOid": "2.16.840.1.101.3.4.2.1", // "digestAlgName": "SHA256" // }, // "contentType": "1.2.840.113549.1.9.16.1.4", // "messageDigest": "NSsMUrfoyCQ0OszPE1YLx1j3EyyCiBmnE5Sua6ghu/Q=", // "signingAlgOid": "1.2.840.113549.1.1.1", // "signingAlgName": "RSA-PKCSV-1_5", // "authAttr": { // "1.2.840.113549.1.9.3": { // "name": "contentType", // "oid": "1.2.840.113549.1.9.16.1.4" // }, // "1.2.840.113549.1.9.4": { // "name": "messageDigest", // "digest": "NSsMUrfoyCQ0OszPE1YLx1j3EyyCiBmnE5Sua6ghu/Q=" // }, // "1.2.840.113549.1.9.16.2.47": { // "name": "signingCertificateV2", // "der": "MIGGMIGDMIGABCDB/np5UxvhcPnSxD2Kme+C88uXGCMWLAvFPHNvTApTWDBcMFGkTzBNMQswCQYDVQQGEwJGUjENMAsGA1UEChMERVRTSTEcMBoGA1UECwwTUGx1Z3Rlc3RzXzIwMTMtMjAxNDERMA8GA1UEAxMIUm9vdENBT0sCBwGqRZLTbGE=" // } // } // } // ] // }, // "timestampSignatureVerified": true, // "tstInfo": { // "tsaPolicyId": "1.3.6.1.4.1.2706.2.2.5.2.1.1.1", // "messageImprint": { // "hashAlg": "sha256", // "digest": "C8xEe9NA4X1cUyHGX9zG89ipmQ2byFs3aa+Xe4Fz2P0=", // "digestMatches": true // }, // "serialNumber": "313E162121D922", // "genTime": "20131203065742Z" // } // } // } // } // ] // } // } // } // int i; int count_i; const char *strVal = 0; const char *certSerialNumber = 0; const char *certIssuerCN = 0; const char *certIssuerDN = 0; const char *certDigestAlgOid = 0; const char *certDigestAlgName = 0; const char *contentType = 0; CkDtObj signingTime; const char *messageDigest = 0; const char *signingAlgOid = 0; const char *signingAlgName = 0; const char *authAttrContentTypeName = 0; const char *authAttrContentTypeOid = 0; const char *authAttrSigningTimeName = 0; CkDtObj authAttrSigningTimeUtctime; const char *authAttrMessageDigestName = 0; const char *authAttrMessageDigestDigest = 0; const char *authAttrSigningCertificateV2Name = 0; const char *authAttrSigningCertificateV2Der = 0; const char *unauthAttrTimestampTokenName = 0; const char *unauthAttrTimestampTokenDer = 0; bool unauthAttrTimestampTokenTimestampSignatureVerified; const char *unauthAttrTimestampTokenTstInfoTsaPolicyId = 0; const char *unauthAttrTimestampTokenTstInfoMessageImprintHashAlg = 0; const char *unauthAttrTimestampTokenTstInfoMessageImprintDigest = 0; bool unauthAttrTimestampTokenTstInfoMessageImprintDigestMatches; const char *unauthAttrTimestampTokenTstInfoSerialNumber = 0; CkDtObj unauthAttrTimestampTokenTstInfoGenTime; int j; int count_j; // Iterate over the hash algorithms used in the signature. 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; } // For each signer... i = 0; count_i = json->SizeOfArray("pkcs7.verify.signerInfo"); while (i < count_i) { json->put_I(i); // Get information about the certificate used by this signer. 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"); // Get additional information for this signer, such as the signingTime, signature algorithm, etc. contentType = json->stringOf("pkcs7.verify.signerInfo[i].contentType"); json->DtOf("pkcs7.verify.signerInfo[i].signingTime",false,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"); // -------------------------------- // Examine authenticated attributes. // -------------------------------- // contentType if (json->HasMember("pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.3\"") == true) { 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"); } // signingTime if (json->HasMember("pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.5\"") == true) { 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",false,authAttrSigningTimeUtctime); } // messageDigest if (json->HasMember("pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.4\"") == true) { 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"); } // signingCertificateV2 if (json->HasMember("pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.16.2.47\"") == true) { authAttrSigningCertificateV2Name = json->stringOf("pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.16.2.47\".name"); authAttrSigningCertificateV2Der = json->stringOf("pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.16.2.47\".der"); } // -------------------------------- // Examine unauthenticated attributes. // -------------------------------- // timestampToken (the timestampToken is what makes this signature a CAdES-T) if (json->HasMember("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\"") == true) { unauthAttrTimestampTokenName = json->stringOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".name"); unauthAttrTimestampTokenDer = json->stringOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".der"); // This is where we find out if the timestampToken's signature is valid. unauthAttrTimestampTokenTimestampSignatureVerified = json->BoolOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".timestampSignatureVerified"); unauthAttrTimestampTokenTstInfoTsaPolicyId = json->stringOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".tstInfo.tsaPolicyId"); unauthAttrTimestampTokenTstInfoMessageImprintHashAlg = json->stringOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".tstInfo.messageImprint.hashAlg"); unauthAttrTimestampTokenTstInfoMessageImprintDigest = json->stringOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".tstInfo.messageImprint.digest"); // Here is where we check to see if the digest in the timestampToken's messageImprint matches the digest of the signature of this signerInfo unauthAttrTimestampTokenTstInfoMessageImprintDigestMatches = json->BoolOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".tstInfo.messageImprint.digestMatches"); unauthAttrTimestampTokenTstInfoSerialNumber = json->stringOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".tstInfo.serialNumber"); // Here is where we get the date/time of the timestampToken (i.e. when it was timestamped) json->DtOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".tstInfo.genTime",false,unauthAttrTimestampTokenTstInfoGenTime); // The following code gets details about the validity of the timestampToken's signature... j = 0; count_j = json->SizeOfArray("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".verify.digestAlgorithms"); while (j < count_j) { json->put_J(j); strVal = json->stringOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".verify.digestAlgorithms[j]"); j = j + 1; } j = 0; count_j = json->SizeOfArray("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".verify.signerInfo"); while (j < count_j) { json->put_J(j); certSerialNumber = json->stringOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".verify.signerInfo[j].cert.serialNumber"); certIssuerCN = json->stringOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".verify.signerInfo[j].cert.issuerCN"); certIssuerDN = json->stringOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".verify.signerInfo[j].cert.issuerDN"); certDigestAlgOid = json->stringOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".verify.signerInfo[j].cert.digestAlgOid"); certDigestAlgName = json->stringOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".verify.signerInfo[j].cert.digestAlgName"); contentType = json->stringOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".verify.signerInfo[j].contentType"); messageDigest = json->stringOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".verify.signerInfo[j].messageDigest"); signingAlgOid = json->stringOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".verify.signerInfo[j].signingAlgOid"); signingAlgName = json->stringOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".verify.signerInfo[j].signingAlgName"); authAttrContentTypeName = json->stringOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".verify.signerInfo[j].authAttr.\"1.2.840.113549.1.9.3\".name"); authAttrContentTypeOid = json->stringOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".verify.signerInfo[j].authAttr.\"1.2.840.113549.1.9.3\".oid"); authAttrMessageDigestName = json->stringOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".verify.signerInfo[j].authAttr.\"1.2.840.113549.1.9.4\".name"); authAttrMessageDigestDigest = json->stringOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".verify.signerInfo[j].authAttr.\"1.2.840.113549.1.9.4\".digest"); authAttrSigningCertificateV2Name = json->stringOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".verify.signerInfo[j].authAttr.\"1.2.840.113549.1.9.16.2.47\".name"); authAttrSigningCertificateV2Der = json->stringOf("pkcs7.verify.signerInfo[i].unauthAttr.\"1.2.840.113549.1.9.16.2.14\".verify.signerInfo[j].authAttr.\"1.2.840.113549.1.9.16.2.47\".der"); j = j + 1; } } i = i + 1; } if (success != true) { strOut.append(crypt.lastErrorText()); strOut.append("\r\n"); strOut.append("CAdES-T verification failed."); strOut.append("\r\n"); } else { strOut.append("CAdES-T signature is valid."); strOut.append("\r\n"); } delete json; SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); } |
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