PowerShell Requires Chilkat v11.0.0+
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Validate CAdES-T Signature (.p7m)
See more CAdES Examples
Validates a CAdES-T CMS signature and extracts the time-stamp token and gets information about it. Also validates the time-stamp token.Chilkat PowerShell Downloads
Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"
$success = $false
# 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 retrieves and parses the last JSON data.
# 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 last JSON data.
# The detailed results of the signature validation are available in the last JSON data.
# (If the non-success return status was caused by an error such as "file not found", then the
# last JSON data would be empty.)
$json = New-Object Chilkat.JsonObject
$crypt.GetLastJsonData($json)
$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.")
}