Unicode C

Duplicate Java Secure Token Creation

See more RSA Examples

Demonstrates how to duplicate some Java code that creates an RSA signature to create a base64 token. Unicode C

#include <C_CkDateTimeW.h>
#include <C_CkStringBuilderW.h>
#include <C_CkCertW.h>
#include <C_CkRsaW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkDateTimeW dt;
    const wchar_t *timeCreated;
    HCkStringBuilderW sbToken;
    HCkCertW cert;
    HCkRsaW rsa;
    const wchar_t *signature;
    const wchar_t *token;

    success = FALSE;

    // This requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // This example duplicates the following Java code:

    // public X509Certificate2 cert = new X509Certificate2(@"Some path to p12/p12file_name.p12","Password_for_p12"); 
    // 
    // public string GenerateSignToken(double timeValidityMin){ 
    //   string equalsSign = ":="; 
    //   string timeCreated = DateTime.Now.ToString("yyyy-MM-ddTHH:mm:ss.fffzzz"); 
    //   string tokenTimeInfo = "validityTimeMinutes" + equalsSign + timeValidityMin + ";"+"timeCreated" + equalsSign + timeCreated; 
    //   string signature = SignData(tokenTimeInfo); 
    //   string secureToken = tokenTimeInfo + ";" + "signature" + equalsSign + signature; 
    //   return Base64UrlEncode(secureToken); 
    // } 
    //  
    // public string SignData(string stringToSign){ 
    //   byte[] dataToSign = Encoding.UTF8.GetBytes(stringToSign); 
    //   RSACryptoServiceProvider privKey = (RSACryptoServiceProvider)cert.PrivateKey; 
    //   CspKeyContainerInfo containerInfo = new RSACryptoServiceProvider().CspKeyContainerInfo; 
    //   CspParameters cspparams = new CspParameters(containerInfo.ProviderType, containerInfo.ProviderName, privKey.CspKeyContainerInfo.KeyContainerName); 
    //   privKey = new RSACryptoServiceProvider(cspparams); 
    //   string id = CryptoConfig.MapNameToOID("SHA256"); 
    //   byte[] sign = privKey.SignData(dataToSign, id); 
    //   bool res = privKey.VerifyData(dataToSign, id, sign); 
    //   return Convert.ToBase64String(sign).Replace('+', '-').Replace('/', '_').Replace("=", ""); 
    // } 
    //  
    // private static string Base64UrlEncode(string input){ 
    //   var inputBytes = Encoding.UTF8.GetBytes(input); 
    //   return Convert.ToBase64String(inputBytes).Replace('+', '-').Replace('/', '_').Replace("=", ""); 
    // } 

    dt = CkDateTimeW_Create();
    CkDateTimeW_SetFromCurrentSystemTime(dt);
    timeCreated = CkDateTimeW_getAsTimestamp(dt,TRUE);

    // Such as 2019-04-01T19:35:44-05:00
    wprintf(L"%s\n",timeCreated);

    sbToken = CkStringBuilderW_Create();
    CkStringBuilderW_Append(sbToken,L"validityTimeMinutes:=10.0;timeCreated:=");
    CkStringBuilderW_Append(sbToken,timeCreated);

    cert = CkCertW_Create();
    success = CkCertW_LoadPfxFile(cert,L"Some path to p12/p12file_name.p12",L"Password_for_p12");
    if (success != TRUE) {
        wprintf(L"%s\n",CkCertW_lastErrorText(cert));
        CkDateTimeW_Dispose(dt);
        CkStringBuilderW_Dispose(sbToken);
        CkCertW_Dispose(cert);
        return;
    }

    rsa = CkRsaW_Create();
    success = CkRsaW_SetX509Cert(rsa,cert,TRUE);
    if (success != TRUE) {
        wprintf(L"%s\n",CkRsaW_lastErrorText(rsa));
        CkDateTimeW_Dispose(dt);
        CkStringBuilderW_Dispose(sbToken);
        CkCertW_Dispose(cert);
        CkRsaW_Dispose(rsa);
        return;
    }

    CkRsaW_putEncodingMode(rsa,L"base64url");

    signature = CkRsaW_signStringENC(rsa,CkStringBuilderW_getAsString(sbToken),L"sha256");
    if (CkRsaW_getLastMethodSuccess(rsa) == FALSE) {
        wprintf(L"%s\n",CkRsaW_lastErrorText(rsa));
        CkDateTimeW_Dispose(dt);
        CkStringBuilderW_Dispose(sbToken);
        CkCertW_Dispose(cert);
        CkRsaW_Dispose(rsa);
        return;
    }

    CkStringBuilderW_Append(sbToken,L";signature:=");
    CkStringBuilderW_Append(sbToken,signature);

    // Base64URL encode the result
    CkStringBuilderW_Encode(sbToken,L"base64url",L"utf-8");
    token = CkStringBuilderW_getAsString(sbToken);

    wprintf(L"%s\n",token);


    CkDateTimeW_Dispose(dt);
    CkStringBuilderW_Dispose(sbToken);
    CkCertW_Dispose(cert);
    CkRsaW_Dispose(rsa);

    }