Lianja
Lianja
RFC3161 Timestamp Client - Fetch from Timestamp Authority (TSA) and Verify
See more HTTP Examples
Sends an RFC 3161 timestamp request to a TSA (Timestamp Authority) server and validates the timestamp token response.Chilkat Lianja Downloads
llSuccess = .F.
// This requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// First sha-256 hash the data that is to be timestamped.
// In this example, the data is the string "Hello World"
loCrypt = createobject("CkCrypt2")
loCrypt.HashAlgorithm = "sha256"
loCrypt.EncodingMode = "base64"
lcBase64Hash = loCrypt.HashStringENC("Hello World")
loHttp = createobject("CkHttp")
loRequestToken = createobject("CkBinData")
lcOptionalPolicyOid = ""
llAddNonce = .F.
llRequestTsaCert = .T.
// Create a time-stamp request token
llSuccess = loHttp.CreateTimestampRequest("sha256",lcBase64Hash,lcOptionalPolicyOid,llAddNonce,llRequestTsaCert,loRequestToken)
if (llSuccess = .F.) then
? loHttp.LastErrorText
release loCrypt
release loHttp
release loRequestToken
return
endif
// Send the time-stamp request token to the TSA.
// This is the equivalent of the following CURL command:
// curl -H "Content-Type: application/timestamp-query" --data-binary '@file.tsq' https://freetsa.org/tsr > file.tsr
lcTsaUrl = "https://freetsa.org/tsr"
// Another timestamp server you could try is: http://timestamp.digicert.com
lcTsaUrl = "http://timestamp.digicert.com"
loResp = createobject("CkHttpResponse")
llSuccess = loHttp.HttpBd("POST",lcTsaUrl,loRequestToken,"application/timestamp-query",loResp)
if (llSuccess = .F.) then
? loHttp.LastErrorText
release loCrypt
release loHttp
release loRequestToken
release loResp
return
endif
// Get the timestamp reply from the HTTP response object.
loTimestampReply = createobject("CkBinData")
loResp.GetBodyBd(loTimestampReply)
// Show the base64 encoded timestamp reply.
? loTimestampReply.GetEncoded("base64")
// Let's verify the timestamp reply against the TSA's cert, which we've previously downloaded.
// See https://freetsa.org/index_en.php
loTsaCert = createobject("CkCert")
llSuccess = loTsaCert.LoadFromFile("qa_data/certs/freetsa.org.cer")
if (llSuccess = .F.) then
? loTsaCert.LastErrorText
release loCrypt
release loHttp
release loRequestToken
release loResp
release loTimestampReply
release loTsaCert
return
endif
// The VerifyTimestampReply method will return one of the following values:
// -1: The timestampReply does not contain a valid timestamp reply.
// -2: The timestampReply is a valid timestamp reply, but failed verification using the public key of the tsaCert.
// 0: Granted and verified.
// 1: Granted and verified, with mods (see RFC 3161)
// 2: Rejected.
// 3: Waiting.
// 4: Revocation Warning
// 5: Revocation Notification
lnPkiStatus = loHttp.VerifyTimestampReply(loTimestampReply,loTsaCert)
if (lnPkiStatus < 0) then
? loHttp.LastErrorText
release loCrypt
release loHttp
release loRequestToken
release loResp
release loTimestampReply
release loTsaCert
return
endif
? "pkiStatus = " + str(lnPkiStatus)
loJson = createobject("CkJsonObject")
loHttp.GetLastJsonData(loJson)
loJson.EmitCompact = .F.
? loJson.Emit()
// The JSON looks like the following.
// Use this online tool to generate parsing code from sample JSON:
// Generate Parsing Code from JSON
// {
// "timestampReply": {
// "pkiStatus": {
// "value": 0,
// "meaning": "granted"
// }
// },
// "pkcs7": {
// "verify": {
// "digestAlgorithms": [
// "sha256"
// ],
// "signerInfo": [
// {
// "cert": {
// "serialNumber": "04CD3F8568AE76C61BB0FE7160CCA76D",
// "issuerCN": "DigiCert SHA2 Assured ID Timestamping CA",
// "digestAlgOid": "2.16.840.1.101.3.4.2.1",
// "digestAlgName": "SHA256"
// },
// "contentType": "1.2.840.113549.1.9.16.1.4",
// "signingTime": "200405023019Z",
// "messageDigest": "f14zOsdnN9vyyV3HjjBiLzNDi1PF28hAFMODxNkNRZs=",
// "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"
// },
// "1.2.840.113549.1.9.5": {
// "name": "signingTime",
// "utctime": "200405023019Z"
// },
// "1.2.840.113549.1.9.16.2.12": {
// "name": "signingCertificate",
// "der": "MBowGDAWBBQDJb1QXtqWMC3CL0+gHkwovig0xQ=="
// },
// "1.2.840.113549.1.9.4": {
// "name": "messageDigest",
// "digest": "f14zOsdnN9vyyV3HjjBiLzNDi1PF28hAFMODxNkNRZs="
// }
// }
// }
// ]
// }
// }
// }
loSigningTime = createobject("CkDtObj")
loAuthAttrSigningTimeUtctime = createobject("CkDtObj")
lnTimestampReplyPkiStatusValue = loJson.IntOf("timestampReply.pkiStatus.value")
lcTimestampReplyPkiStatusMeaning = loJson.StringOf("timestampReply.pkiStatus.meaning")
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
i = 0
lnCount_i = loJson.SizeOfArray("pkcs7.verify.signerInfo")
do while i < lnCount_i
loJson.I = i
lcCertSerialNumber = loJson.StringOf("pkcs7.verify.signerInfo[i].cert.serialNumber")
lcCertIssuerCN = loJson.StringOf("pkcs7.verify.signerInfo[i].cert.issuerCN")
lcCertDigestAlgOid = loJson.StringOf("pkcs7.verify.signerInfo[i].cert.digestAlgOid")
lcCertDigestAlgName = loJson.StringOf("pkcs7.verify.signerInfo[i].cert.digestAlgName")
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")
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')
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)
lcAuthAttrSigningCertificateName = loJson.StringOf('pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.16.2.12".name')
lcAuthAttrSigningCertificateDer = loJson.StringOf('pkcs7.verify.signerInfo[i].authAttr."1.2.840.113549.1.9.16.2.12".der')
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')
i = i + 1
enddo
release loCrypt
release loHttp
release loRequestToken
release loResp
release loTimestampReply
release loTsaCert
release loJson
release loSigningTime
release loAuthAttrSigningTimeUtctime