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Get PDF DSS (Document Security Store)
See more PDF Signatures Examples
This example demonstrates how to extract the information from a PDF's DSS (Document Security Store), if a /DSS exists. (Just because a PDF is signed does not mean a /DSS will exists. In fact, the /DSS is typically created at the point of adding the 2nd or greater signature because the /DSS contains LTV (long term validation) information about the previous signature at the time of adding an additional signature.)Note: This example requires Chilkat v9.5.0.85 or greater.
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Local $bSuccess = False
; This example requires the Chilkat API to have been previously unlocked.
; See Global Unlock Sample for sample code.
$oPdf = ObjCreate("Chilkat.Pdf")
$bSuccess = $oPdf.LoadFile("qa_data/pdf/sign_testing_1/helloSigned2.pdf")
If ($bSuccess = False) Then
ConsoleWrite($oPdf.LastErrorText & @CRLF)
Exit
EndIf
$oJson = ObjCreate("Chilkat.JsonObject")
$oJson.EmitCompact = False
$bSuccess = $oPdf.GetDss($oJson)
ConsoleWrite($oJson.Emit() & @CRLF)
; The document security store contains certificates, OCSP responses, and CRLs.
; The following JSON is a sample of what the /DSS can contain.
; Unfortunately, our sample contains /Certs and /OCSPs, but no /CRLs.
; It's no problem because whatever JSON you get back, you can use the
; following online tool to generate code to parse.
; Generate Parsing Code from JSON
; The code generated by the online tool for this JSON is shown below..
; {
; "/VRI": {
; "/EC5BB34CC1F8A0C5FE674427E16E313A08C80808": {}
; },
; "/Certs": [
; {
; "serial": "02",
; "validFrom": "2011-08-07T19:00:00-05:00",
; "validTo": "2021-08-10T23:59:59-05:00",
; "expired": false,
; "subject": {
; "CN": "XYZ Corporation",
; "O": "XYZ"
; },
; "issuer": {
; "CN": "XYZ Corporation",
; "O": "XYZ"
; },
; "keyType": "RSA",
; "keySize": "2048",
; "der": "MIIDz...Q4Zt"
; },
; {
; "serial": "01",
; "validFrom": "2011-08-07T19:00:00-05:00",
; "validTo": "2021-08-10T23:59:59-05:00",
; "expired": false,
; "subject": {
; "CN": "XYZ Corporation",
; "O": "XYZ"
; },
; "issuer": {
; "CN": "XYZ Corporation",
; "O": "XYZ"
; },
; "keyType": "RSA",
; "keySize": "2048",
; "der": "MIID...jXYFc="
; },
; {
; "serial": "0AA125D6D6321B7E41E405DA3697C215",
; "validFrom": "2016-01-07T06:00:00-06:00",
; "validTo": "2031-01-07T12:00:00-06:00",
; "expired": false,
; "subject": {
; "CN": "DigiCert SHA2 Assured ID Timestamping CA",
; "OU": "www.digicert.com",
; "O": "DigiCert Inc",
; "C": "US"
; },
; "issuer": {
; "CN": "DigiCert Assured ID Root CA",
; "OU": "www.digicert.com",
; "O": "DigiCert Inc",
; "C": "US"
; },
; "keyType": "RSA",
; "keySize": "2048",
; "der": "MIIF...OUg=="
; },
; {
; "serial": "04CD3F8568AE76C61BB0FE7160CCA76D",
; "validFrom": "2019-09-30T19:00:00-05:00",
; "validTo": "2030-10-17T00:00:00-05:00",
; "expired": false,
; "subject": {
; "CN": "TIMESTAMP-SHA256-2019-10-15",
; "O": "DigiCert, Inc.",
; "C": "US"
; },
; "issuer": {
; "CN": "DigiCert SHA2 Assured ID Timestamping CA",
; "OU": "www.digicert.com",
; "O": "DigiCert Inc",
; "C": "US"
; },
; "keyType": "RSA",
; "keySize": "2048",
; "der": "MIIG...MJtPc="
; },
; {
; "serial": "0CE7E0E517D846FE8FE560FC1BF03039",
; "validFrom": "2006-11-09T18:00:00-06:00",
; "validTo": "2031-11-10T00:00:00-06:00",
; "expired": false,
; "subject": {
; "CN": "DigiCert Assured ID Root CA",
; "OU": "www.digicert.com",
; "O": "DigiCert Inc",
; "C": "US"
; },
; "issuer": {
; "CN": "DigiCert Assured ID Root CA",
; "OU": "www.digicert.com",
; "O": "DigiCert Inc",
; "C": "US"
; },
; "keyType": "RSA",
; "keySize": "2048",
; "der": "MIIDt...FL6Lw8g=="
; },
; {
; "serial": "E4D34D01798BE686424AF7F6F0C3BF41",
; "validFrom": "2015-03-24T10:58:16-05:00",
; "validTo": "2039-12-31T23:59:59-06:00",
; "expired": false,
; "subject": {
; "CN": "www.xyz.com"
; },
; "issuer": {
; "CN": "www.xyz.com"
; },
; "keyType": "RSA",
; "keySize": "1024",
; "der": "MIIB9DCCAWG...UR10lz"
; }
; ],
; "/OCSPs": [
; {
; "responseStatus": 0,
; "responseTypeOid": "1.3.6.1.5.5.7.48.1.1",
; "responseTypeName": "ocspBasic",
; "response": {
; "responderIdChoice": "KeyHash",
; "responderKeyHash": "Reuir/SSy4IxLVGLp6chnfNtyA8=",
; "dateTime": "20201005173921Z",
; "cert": [
; {
; "hashOid": "1.3.14.3.2.26",
; "hashAlg": "SHA-1",
; "issuerNameHash": "98S+C0C1w0QzPT+uuU1uONr67FE=",
; "issuerKeyHash": "Reuir/SSy4IxLVGLp6chnfNtyA8=",
; "serialNumber": "0AA125D6D6321B7E41E405DA3697C215",
; "status": 0,
; "thisUpdate": "20201005173921Z",
; "nextUpdate": "20201012173921Z"
; }
; ]
; }
; },
; {
; "responseStatus": 0,
; "responseTypeOid": "1.3.6.1.5.5.7.48.1.1",
; "responseTypeName": "ocspBasic",
; "response": {
; "responderIdChoice": "KeyHash",
; "responderKeyHash": "9LbhIB3+Ka7S5GGlsqIlssgXNW4=",
; "dateTime": "20201006114501Z",
; "cert": [
; {
; "hashOid": "1.3.14.3.2.26",
; "hashAlg": "SHA-1",
; "issuerNameHash": "+YYA+KSr7NIxRSxCjUNQo25SyD0=",
; "issuerKeyHash": "9LbhIB3+Ka7S5GGlsqIlssgXNW4=",
; "serialNumber": "04CD3F8568AE76C61BB0FE7160CCA76D",
; "status": 0,
; "thisUpdate": "20201006114501Z",
; "nextUpdate": "20201013110001Z"
; }
; ]
; }
; }
; ]
; }
$oResponseDateTime = ObjCreate("Chilkat.DtObj")
$oThisUpdate = ObjCreate("Chilkat.DtObj")
$oNextUpdate = ObjCreate("Chilkat.DtObj")
Local $serial
Local $sValidFrom
Local $sValidTo
Local $bExpired
Local $subjectCN
Local $subjectO
Local $sIssuerCN
Local $sIssuerO
Local $sKeyType
Local $sKeySize
Local $sDer
Local $subjectOU
Local $subjectC
Local $sIssuerOU
Local $sIssuerC
Local $iResponseStatus
Local $sResponseTypeOid
Local $sResponseTypeName
Local $sResponseResponderIdChoice
Local $sResponseResponderKeyHash
Local $iJ
Local $iCount_j
Local $sHashOid
Local $sHashAlg
Local $sIssuerNameHash
Local $sIssuerKeyHash
Local $serialNumber
Local $iStatus
Local $i = 0
Local $iCount_i = $oJson.SizeOfArray("/Certs")
While $i < $iCount_i
$oJson.I = $i
$serial = $oJson.StringOf("/Certs[i].serial")
$sValidFrom = $oJson.StringOf("/Certs[i].validFrom")
$sValidTo = $oJson.StringOf("/Certs[i].validTo")
$bExpired = $oJson.BoolOf("/Certs[i].expired")
$subjectCN = $oJson.StringOf("/Certs[i].subject.CN")
$subjectO = $oJson.StringOf("/Certs[i].subject.O")
$sIssuerCN = $oJson.StringOf("/Certs[i].issuer.CN")
$sIssuerO = $oJson.StringOf("/Certs[i].issuer.O")
$sKeyType = $oJson.StringOf("/Certs[i].keyType")
$sKeySize = $oJson.StringOf("/Certs[i].keySize")
$sDer = $oJson.StringOf("/Certs[i].der")
$subjectOU = $oJson.StringOf("/Certs[i].subject.OU")
$subjectC = $oJson.StringOf("/Certs[i].subject.C")
$sIssuerOU = $oJson.StringOf("/Certs[i].issuer.OU")
$sIssuerC = $oJson.StringOf("/Certs[i].issuer.C")
$i = $i + 1
Wend
$i = 0
$iCount_i = $oJson.SizeOfArray("/OCSPs")
While $i < $iCount_i
$oJson.I = $i
$iResponseStatus = $oJson.IntOf("/OCSPs[i].responseStatus")
$sResponseTypeOid = $oJson.StringOf("/OCSPs[i].responseTypeOid")
$sResponseTypeName = $oJson.StringOf("/OCSPs[i].responseTypeName")
$sResponseResponderIdChoice = $oJson.StringOf("/OCSPs[i].response.responderIdChoice")
$sResponseResponderKeyHash = $oJson.StringOf("/OCSPs[i].response.responderKeyHash")
$oJson.DtOf("/OCSPs[i].response.dateTime",False,$oResponseDateTime)
$iJ = 0
$iCount_j = $oJson.SizeOfArray("/OCSPs[i].response.cert")
While $iJ < $iCount_j
$oJson.J = $iJ
$sHashOid = $oJson.StringOf("/OCSPs[i].response.cert[j].hashOid")
$sHashAlg = $oJson.StringOf("/OCSPs[i].response.cert[j].hashAlg")
$sIssuerNameHash = $oJson.StringOf("/OCSPs[i].response.cert[j].issuerNameHash")
$sIssuerKeyHash = $oJson.StringOf("/OCSPs[i].response.cert[j].issuerKeyHash")
$serialNumber = $oJson.StringOf("/OCSPs[i].response.cert[j].serialNumber")
$iStatus = $oJson.IntOf("/OCSPs[i].response.cert[j].status")
$oJson.DtOf("/OCSPs[i].response.cert[j].thisUpdate",False,$oThisUpdate)
$oJson.DtOf("/OCSPs[i].response.cert[j].nextUpdate",False,$oNextUpdate)
$iJ = $iJ + 1
Wend
$i = $i + 1
Wend