C++

Load a Public Key from a String

Demonstrates the Chilkat PublicKey.LoadFromString method, which loads a public key from a string. The only argument is the string. Chilkat examines the content and recognizes PEM public keys, unencrypted PEM private keys (taking only the public portion), XML, JWK, and more.

Background: This is the forgiving text loader: rather than requiring you to know the exact format, it inspects whatever string you provide and figures it out. A useful convenience is that it accepts an unencrypted private key too and keeps only the public half — handy when you have a key pair but need just the public key. Use it whenever the textual format is uncertain or varies by source.

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C++

#include <CkPublicKey.h>

void ChilkatSample(void)
    {
    bool success = false;

    //  Demonstrates the PublicKey.LoadFromString method, which loads a public key from a string.  The
    //  only argument is the string.  Chilkat examines the content and recognizes PEM public keys,
    //  unencrypted PEM private keys (using only the public portion), XML, JWK, and more.

    CkPublicKey pubKey;

    //  The PEM text of a public key.
    const char *keyText = "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkq...IDAQAB\n-----END PUBLIC KEY-----";

    success = pubKey.LoadFromString(keyText);
    if (success == false) {
        std::cout << pubKey.lastErrorText() << "\r\n";
        return;
    }

    std::cout << "Loaded a " << pubKey.keyType() << " public key." << "\r\n";
    }