Unicode C
Unicode C
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 Unicode C Downloads
#include <C_CkCrypt2W.h>
#include <C_CkHttpW.h>
#include <C_CkBinDataW.h>
#include <C_CkHttpResponseW.h>
#include <C_CkCertW.h>
#include <C_CkJsonObjectW.h>
#include <C_CkDtObjW.h>
void ChilkatSample(void)
{
BOOL success;
HCkCrypt2W crypt;
const wchar_t *base64Hash;
HCkHttpW http;
HCkBinDataW requestToken;
const wchar_t *optionalPolicyOid;
BOOL addNonce;
BOOL requestTsaCert;
const wchar_t *tsaUrl;
HCkHttpResponseW resp;
HCkBinDataW timestampReply;
HCkCertW tsaCert;
int pkiStatus;
HCkJsonObjectW json;
HCkDtObjW signingTime;
HCkDtObjW authAttrSigningTimeUtctime;
const wchar_t *strVal;
const wchar_t *certSerialNumber;
const wchar_t *certIssuerCN;
const wchar_t *certDigestAlgOid;
const wchar_t *certDigestAlgName;
const wchar_t *contentType;
const wchar_t *messageDigest;
const wchar_t *signingAlgOid;
const wchar_t *signingAlgName;
const wchar_t *authAttrContentTypeName;
const wchar_t *authAttrContentTypeOid;
const wchar_t *authAttrSigningTimeName;
const wchar_t *authAttrSigningCertificateName;
const wchar_t *authAttrSigningCertificateDer;
const wchar_t *authAttrMessageDigestName;
const wchar_t *authAttrMessageDigestDigest;
int timestampReplyPkiStatusValue;
const wchar_t *timestampReplyPkiStatusMeaning;
int i;
int count_i;
success = FALSE;
// 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"
crypt = CkCrypt2W_Create();
CkCrypt2W_putHashAlgorithm(crypt,L"sha256");
CkCrypt2W_putEncodingMode(crypt,L"base64");
base64Hash = CkCrypt2W_hashStringENC(crypt,L"Hello World");
http = CkHttpW_Create();
requestToken = CkBinDataW_Create();
optionalPolicyOid = L"";
addNonce = FALSE;
requestTsaCert = TRUE;
// Create a time-stamp request token
success = CkHttpW_CreateTimestampRequest(http,L"sha256",base64Hash,optionalPolicyOid,addNonce,requestTsaCert,requestToken);
if (success == FALSE) {
wprintf(L"%s\n",CkHttpW_lastErrorText(http));
CkCrypt2W_Dispose(crypt);
CkHttpW_Dispose(http);
CkBinDataW_Dispose(requestToken);
return;
}
// 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
tsaUrl = L"https://freetsa.org/tsr";
// Another timestamp server you could try is: http://timestamp.digicert.com
tsaUrl = L"http://timestamp.digicert.com";
resp = CkHttpResponseW_Create();
success = CkHttpW_HttpBd(http,L"POST",tsaUrl,requestToken,L"application/timestamp-query",resp);
if (success == FALSE) {
wprintf(L"%s\n",CkHttpW_lastErrorText(http));
CkCrypt2W_Dispose(crypt);
CkHttpW_Dispose(http);
CkBinDataW_Dispose(requestToken);
CkHttpResponseW_Dispose(resp);
return;
}
// Get the timestamp reply from the HTTP response object.
timestampReply = CkBinDataW_Create();
CkHttpResponseW_GetBodyBd(resp,timestampReply);
// Show the base64 encoded timestamp reply.
wprintf(L"%s\n",CkBinDataW_getEncoded(timestampReply,L"base64"));
// Let's verify the timestamp reply against the TSA's cert, which we've previously downloaded.
// See https://freetsa.org/index_en.php
tsaCert = CkCertW_Create();
success = CkCertW_LoadFromFile(tsaCert,L"qa_data/certs/freetsa.org.cer");
if (success == FALSE) {
wprintf(L"%s\n",CkCertW_lastErrorText(tsaCert));
CkCrypt2W_Dispose(crypt);
CkHttpW_Dispose(http);
CkBinDataW_Dispose(requestToken);
CkHttpResponseW_Dispose(resp);
CkBinDataW_Dispose(timestampReply);
CkCertW_Dispose(tsaCert);
return;
}
// 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
pkiStatus = CkHttpW_VerifyTimestampReply(http,timestampReply,tsaCert);
if (pkiStatus < 0) {
wprintf(L"%s\n",CkHttpW_lastErrorText(http));
CkCrypt2W_Dispose(crypt);
CkHttpW_Dispose(http);
CkBinDataW_Dispose(requestToken);
CkHttpResponseW_Dispose(resp);
CkBinDataW_Dispose(timestampReply);
CkCertW_Dispose(tsaCert);
return;
}
wprintf(L"pkiStatus = %d\n",pkiStatus);
json = CkJsonObjectW_Create();
CkHttpW_GetLastJsonData(http,json);
CkJsonObjectW_putEmitCompact(json,FALSE);
wprintf(L"%s\n",CkJsonObjectW_emit(json));
// 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="
// }
// }
// }
// ]
// }
// }
// }
// Chilkat functions returning "const char *" return a pointer to temporary internal memory owned and managed by Chilkat.
// See this example explaining how this memory should be used: const char * functions.
signingTime = CkDtObjW_Create();
authAttrSigningTimeUtctime = CkDtObjW_Create();
timestampReplyPkiStatusValue = CkJsonObjectW_IntOf(json,L"timestampReply.pkiStatus.value");
timestampReplyPkiStatusMeaning = CkJsonObjectW_stringOf(json,L"timestampReply.pkiStatus.meaning");
i = 0;
count_i = CkJsonObjectW_SizeOfArray(json,L"pkcs7.verify.digestAlgorithms");
while (i < count_i) {
CkJsonObjectW_putI(json,i);
strVal = CkJsonObjectW_stringOf(json,L"pkcs7.verify.digestAlgorithms[i]");
i = i + 1;
}
i = 0;
count_i = CkJsonObjectW_SizeOfArray(json,L"pkcs7.verify.signerInfo");
while (i < count_i) {
CkJsonObjectW_putI(json,i);
certSerialNumber = CkJsonObjectW_stringOf(json,L"pkcs7.verify.signerInfo[i].cert.serialNumber");
certIssuerCN = CkJsonObjectW_stringOf(json,L"pkcs7.verify.signerInfo[i].cert.issuerCN");
certDigestAlgOid = CkJsonObjectW_stringOf(json,L"pkcs7.verify.signerInfo[i].cert.digestAlgOid");
certDigestAlgName = CkJsonObjectW_stringOf(json,L"pkcs7.verify.signerInfo[i].cert.digestAlgName");
contentType = CkJsonObjectW_stringOf(json,L"pkcs7.verify.signerInfo[i].contentType");
CkJsonObjectW_DtOf(json,L"pkcs7.verify.signerInfo[i].signingTime",FALSE,signingTime);
messageDigest = CkJsonObjectW_stringOf(json,L"pkcs7.verify.signerInfo[i].messageDigest");
signingAlgOid = CkJsonObjectW_stringOf(json,L"pkcs7.verify.signerInfo[i].signingAlgOid");
signingAlgName = CkJsonObjectW_stringOf(json,L"pkcs7.verify.signerInfo[i].signingAlgName");
authAttrContentTypeName = CkJsonObjectW_stringOf(json,L"pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.3\".name");
authAttrContentTypeOid = CkJsonObjectW_stringOf(json,L"pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.3\".oid");
authAttrSigningTimeName = CkJsonObjectW_stringOf(json,L"pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.5\".name");
CkJsonObjectW_DtOf(json,L"pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.5\".utctime",FALSE,authAttrSigningTimeUtctime);
authAttrSigningCertificateName = CkJsonObjectW_stringOf(json,L"pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.16.2.12\".name");
authAttrSigningCertificateDer = CkJsonObjectW_stringOf(json,L"pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.16.2.12\".der");
authAttrMessageDigestName = CkJsonObjectW_stringOf(json,L"pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.4\".name");
authAttrMessageDigestDigest = CkJsonObjectW_stringOf(json,L"pkcs7.verify.signerInfo[i].authAttr.\"1.2.840.113549.1.9.4\".digest");
i = i + 1;
}
CkCrypt2W_Dispose(crypt);
CkHttpW_Dispose(http);
CkBinDataW_Dispose(requestToken);
CkHttpResponseW_Dispose(resp);
CkBinDataW_Dispose(timestampReply);
CkCertW_Dispose(tsaCert);
CkJsonObjectW_Dispose(json);
CkDtObjW_Dispose(signingTime);
CkDtObjW_Dispose(authAttrSigningTimeUtctime);
}