C++

Export a Public Key as XML

Demonstrates the Chilkat PublicKey.GetXml method, which returns the public key in Chilkat XML format. It takes no arguments; the exact representation (for example an RSAPublicKey element) depends on the key type.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: The XML key format comes from the .NET/XML-DSIG world; exporting to it lets you hand a public key to .NET code or a system built around XML signatures. It is the inverse of LoadXml-style loading. Because a public key is not secret, this XML can be shared freely.

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C++

#include <CkPublicKey.h>

void ChilkatSample(void)
    {
    bool success = false;

    //  Load a public key to export.  LoadFromFile inspects the content, so it accepts DER, PEM, XML,
    //  JWK, and other supported representations.
    CkPublicKey pubKey;
    success = pubKey.LoadFromFile("qa_data/public.pem");
    if (success == false) {
        std::cout << pubKey.lastErrorText() << "\r\n";
        return;
    }

    //  Export the public key in Chilkat XML format.  The representation depends on the key type (for
    //  example an RSAPublicKey element for RSA).
    const char *xml = pubKey.getXml();
    if (pubKey.get_LastMethodSuccess() == false) {
        std::cout << pubKey.lastErrorText() << "\r\n";
        return;
    }

    std::cout << xml << "\r\n";
    }