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(PowerShell) 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.
Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll" # This example requires the Chilkat API to have been previously unlocked. # See Global Unlock Sample for sample code. $crypt = New-Object Chilkat.Crypt2 # Indicate that the CAdES-T timestamp tokens must also pass validation for the signature to be validated. $cmsOptions = New-Object Chilkat.JsonObject $cmsOptions.UpdateBool("ValidateTimestampTokens",$true) $crypt.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.) $json = $crypt.LastJsonData() $json.EmitCompact = $false $($json.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" # } # } # } # } # ] # } # } # } # $signingTime = New-Object Chilkat.DtObj $authAttrSigningTimeUtctime = New-Object Chilkat.DtObj $unauthAttrTimestampTokenTstInfoGenTime = New-Object Chilkat.DtObj # Iterate over the hash algorithms used in the signature. $i = 0 $count_i = $json.SizeOfArray("pkcs7.verify.digestAlgorithms") while ($i -lt $count_i) { $json.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 -lt $count_i) { $json.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`"") -eq $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`"") -eq $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`"") -eq $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`"") -eq $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`"") -eq $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 -lt $count_j) { $json.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 -lt $count_j) { $json.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 -ne $true) { $($crypt.LastErrorText) $("CAdES-T verification failed.") } else { $("CAdES-T signature is valid.") } |
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