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(Lianja) 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.
// This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. loCrypt = createobject("CkCrypt2") // Indicate that the CAdES-T timestamp tokens must also pass validation for the signature to be validated. loCmsOptions = createobject("CkJsonObject") loCmsOptions.UpdateBool("ValidateTimestampTokens",.T.) loCrypt.CmsOptions = loCmsOptions.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. llSuccess = loCrypt.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.) loJson = loCrypt.LastJsonData() loJson.EmitCompact = .F. ? loJson.Emit() // 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" // } // } // } // } // ] // } // } // } // loSigningTime = createobject("CkDtObj") loAuthAttrSigningTimeUtctime = createobject("CkDtObj") loUnauthAttrTimestampTokenTstInfoGenTime = createobject("CkDtObj") // Iterate over the hash algorithms used in the signature. i = 0 lnCount_i = loJson.SizeOfArray("pkcs7.verify.digestAlgorithms") do while i < lnCount_i loJson.I = i lcStrVal = loJson.StringOf("pkcs7.verify.digestAlgorithms[i]") i = i + 1 enddo // For each signer... i = 0 lnCount_i = loJson.SizeOfArray("pkcs7.verify.signerInfo") do while i < lnCount_i loJson.I = i // Get information about the certificate used by this signer. lcCertSerialNumber = loJson.StringOf("pkcs7.verify.signerInfo[i].cert.serialNumber") lcCertIssuerCN = loJson.StringOf("pkcs7.verify.signerInfo[i].cert.issuerCN") lcCertIssuerDN = loJson.StringOf("pkcs7.verify.signerInfo[i].cert.issuerDN") lcCertDigestAlgOid = loJson.StringOf("pkcs7.verify.signerInfo[i].cert.digestAlgOid") lcCertDigestAlgName = loJson.StringOf("pkcs7.verify.signerInfo[i].cert.digestAlgName") // Get additional information for this signer, such as the signingTime, signature algorithm, etc. lcContentType = loJson.StringOf("pkcs7.verify.signerInfo[i].contentType") loJson.DtOf("pkcs7.verify.signerInfo[i].signingTime",.F.,loSigningTime) lcMessageDigest = loJson.StringOf("pkcs7.verify.signerInfo[i].messageDigest") lcSigningAlgOid = loJson.StringOf("pkcs7.verify.signerInfo[i].signingAlgOid") lcSigningAlgName = loJson.StringOf("pkcs7.verify.signerInfo[i].signingAlgName") // -------------------------------- // Examine authenticated attributes. // -------------------------------- // contentType if (loJson.HasMember('pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.3"') = .T.) then lcAuthAttrContentTypeName = loJson.StringOf('pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.3".name') lcAuthAttrContentTypeOid = loJson.StringOf('pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.3".oid') endif // signingTime if (loJson.HasMember('pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.5"') = .T.) then lcAuthAttrSigningTimeName = loJson.StringOf('pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.5".name') loJson.DtOf('pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.5".utctime',.F.,loAuthAttrSigningTimeUtctime) endif // messageDigest if (loJson.HasMember('pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.4"') = .T.) then lcAuthAttrMessageDigestName = loJson.StringOf('pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.4".name') lcAuthAttrMessageDigestDigest = loJson.StringOf('pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.4".digest') endif // signingCertificateV2 if (loJson.HasMember('pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.16.2.47"') = .T.) then lcAuthAttrSigningCertificateV2Name = loJson.StringOf('pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.16.2.47".name') lcAuthAttrSigningCertificateV2Der = loJson.StringOf('pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.16.2.47".der') endif // -------------------------------- // Examine unauthenticated attributes. // -------------------------------- // timestampToken (the timestampToken is what makes this signature a CAdES-T) if (loJson.HasMember('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14"') = .T.) then lcUnauthAttrTimestampTokenName = loJson.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".name') lcUnauthAttrTimestampTokenDer = loJson.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. llUnauthAttrTimestampTokenTimestampSignatureVerified = loJson.BoolOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".timestampSignatureVerified') lcUnauthAttrTimestampTokenTstInfoTsaPolicyId = loJson.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".tstInfo.tsaPolicyId') lcUnauthAttrTimestampTokenTstInfoMessageImprintHashAlg = loJson.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".tstInfo.messageImprint.hashAlg') lcUnauthAttrTimestampTokenTstInfoMessageImprintDigest = loJson.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 llUnauthAttrTimestampTokenTstInfoMessageImprintDigestMatches = loJson.BoolOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".tstInfo.messageImprint.digestMatches') lcUnauthAttrTimestampTokenTstInfoSerialNumber = loJson.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) loJson.DtOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".tstInfo.genTime',.F.,loUnauthAttrTimestampTokenTstInfoGenTime) // The following code gets details about the validity of the timestampToken's signature... j = 0 lnCount_j = loJson.SizeOfArray('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.digestAlgorithms') do while j < lnCount_j loJson.J = j lcStrVal = loJson.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.digestAlgorithms[j]') j = j + 1 enddo j = 0 lnCount_j = loJson.SizeOfArray('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo') do while j < lnCount_j loJson.J = j lcCertSerialNumber = loJson.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].cert.serialNumber') lcCertIssuerCN = loJson.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].cert.issuerCN') lcCertIssuerDN = loJson.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].cert.issuerDN') lcCertDigestAlgOid = loJson.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].cert.digestAlgOid') lcCertDigestAlgName = loJson.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].cert.digestAlgName') lcContentType = loJson.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].contentType') lcMessageDigest = loJson.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].messageDigest') lcSigningAlgOid = loJson.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].signingAlgOid') lcSigningAlgName = loJson.StringOf('pkcs7.verify.signerInfo[i].unauthAttr."1.2.840.113549.1.9.16.2.14".verify.signerInfo[j].signingAlgName') lcAuthAttrContentTypeName = loJson.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') lcAuthAttrContentTypeOid = loJson.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') lcAuthAttrMessageDigestName = loJson.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') lcAuthAttrMessageDigestDigest = loJson.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') lcAuthAttrSigningCertificateV2Name = loJson.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') lcAuthAttrSigningCertificateV2Der = loJson.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 enddo endif i = i + 1 enddo if (llSuccess <> .T.) then ? loCrypt.LastErrorText ? "CAdES-T verification failed." else ? "CAdES-T signature is valid." endif release loJson release loCrypt release loCmsOptions release loSigningTime release loAuthAttrSigningTimeUtctime release loUnauthAttrTimestampTokenTstInfoGenTime |
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