Unicode C

Create JWT using a Certificate's Private Key

See more JSON Web Token (JWT) Examples

Demonstrates how to create a JWT using a certificate's private key. Unicode C

#include <C_CkCertW.h>
#include <C_CkJwtW.h>
#include <C_CkJsonObjectW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkCertW cert;
    HCkJwtW jwt;
    HCkJsonObjectW jose;
    HCkJsonObjectW claims;
    int curDateTime;
    const wchar_t *token;

    success = FALSE;

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

    // Demonstrates how to create a JWT using an certificate's private key.

    cert = CkCertW_Create();

    // Load an ECC private key from a PEM file.
    success = CkCertW_LoadPfxFile(cert,L"c:/temp/myPfx.pfx",L"pfxPassword");
    if (success != TRUE) {
        wprintf(L"%s\n",CkCertW_lastErrorText(cert));
        CkCertW_Dispose(cert);
        return;
    }

    jwt = CkJwtW_Create();

    // Build the JOSE header
    jose = CkJsonObjectW_Create();
    // Note: The IsEcdsa function was added in Chilkat v10.1.0
    if (CkCertW_IsEcdsa(cert) == TRUE) {
        // Use ES256.  Pass the string "ES384" or "ES512" to use ECC with SHA-384 or SHA-512.
        CkJsonObjectW_AppendString(jose,L"alg",L"ES256");
    }
    else {
        // Probably RSA...
        // Use RS256.  Pass the string "RS384" or "RS512" to use RSA with SHA-384 or SHA-512.
        CkJsonObjectW_AppendString(jose,L"alg",L"RS256");
    }

    CkJsonObjectW_AppendString(jose,L"typ",L"JWT");

    // Now build the JWT claims (also known as the payload)
    claims = CkJsonObjectW_Create();
    CkJsonObjectW_AppendString(claims,L"iss",L"http://example.org");
    CkJsonObjectW_AppendString(claims,L"sub",L"John");
    CkJsonObjectW_AppendString(claims,L"aud",L"http://example.com");

    // Set the timestamp of when the JWT was created to now.
    curDateTime = CkJwtW_GenNumericDate(jwt,0);
    CkJsonObjectW_AddIntAt(claims,-1,L"iat",curDateTime);

    // Set the "not process before" timestamp to now.
    CkJsonObjectW_AddIntAt(claims,-1,L"nbf",curDateTime);

    // Set the timestamp defining an expiration time (end time) for the token
    // to be now + 1 hour (3600 seconds)
    CkJsonObjectW_AddIntAt(claims,-1,L"exp",curDateTime + 3600);

    // Produce the smallest possible JWT:
    CkJwtW_putAutoCompact(jwt,TRUE);

    // Create the JWT token.
    token = CkJwtW_createJwtCert(jwt,CkJsonObjectW_emit(jose),CkJsonObjectW_emit(claims),cert);

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

    // Example output:
    // eyJhbGciOiJFUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJodHRwOi8vZXhhbXBsZS5vcmciLCJzdWIiOiJKb2huIiwiYXVkIjoiaHR0cDovL2V4YW1wbGUuY29tIiwiaWF0IjoxNDg1NzA4NzkyLCJuYmYiOjE0ODU3MDg3OTIsImV4cCI6MTQ4NTcxMjM5Mn0.wqsuyJpxJ073ox-lOiLFqG1lQocXe4hGf2XGZJRrO3qn0UusxI_bu3Gzky8gBsH4sA4u9TWZn5M-1wYMMIJk6Q


    CkCertW_Dispose(cert);
    CkJwtW_Dispose(jwt);
    CkJsonObjectW_Dispose(jose);
    CkJsonObjectW_Dispose(claims);

    }