(MFC) ChartURL - Create a Signed URL

Demonstrates how to create a signed URL for ChartURL.

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkCrypt2.h>
#include <CkJsonObject.h>
#include <CkStringBuilder.h>

void ChilkatSample(void)
    {
    CkString strOut;

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

    CkCrypt2 crypt;

    // Example key: "dek-d7a46236eda961a6c3c18ffcc6b077ba87d27e9ae85f7842c6d427c265dd5f69d5131308d93332353d4a55a4b1160fcf516515a4a9f0aa50fbf2d7a2e7d0f1c5"
    const char *key = "charturl-sign-encrypt-key";
    // Example token: "dt-RwYN"
    const char *token = "charturl-token";

    const char *slug = "weekly-activity";
    const char *data = "{ \"options\": {\"data\": {\"columns\": [[\"This Week\",10,13],[\"Last Week\",9,5]]}}}";

    crypt.put_HashAlgorithm("SHA256");
    crypt.put_MacAlgorithm("HMAC");
    crypt.SetMacKeyString(key);
    crypt.put_EncodingMode("base64");

    CkJsonObject json;
    json.Load(data);
    strOut.append("json = ");
    strOut.append(json.emit());
    strOut.append("\r\n");

    const char *sig = crypt.macStringENC(json.emit());

    CkStringBuilder sbUrl;
    sbUrl.Append("https://charturl.com/i/");
    sbUrl.Append(token);
    sbUrl.Append("/");
    sbUrl.Append(slug);
    sbUrl.Append("?d=");
    sbUrl.Append(crypt.encodeString(json.emit(),"utf-8","url"));
    sbUrl.Append("&s=");
    sbUrl.Append(crypt.encodeString(sig,"utf-8","url"));

    strOut.append("Signed URL: ");
    strOut.append(sbUrl.getAsString());
    strOut.append("\r\n");


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }