C++

Load an SSH Key from a File (Many Formats Supported)

Demonstrates how to load an SSH public or private key object from a file. The file can be in any of the following formats:

• OpenSSH private key
• OpenSSH public key
• PuTTY private key
• RFC 4716 public key

C++

#include <CkSshKey.h>

void ChilkatSample(void)
    {
    bool success = false;

    CkSshKey sshkey;

    //  First, use the LoadText convenience method to load a text file (of any SSH key format)
    //  into a string:
    const char *strKey = sshkey.loadText("../mySshKeys/myKey.txt");

    //  Next, load the key into the SSH key object.

    //  If the key is an OpenSSH private key:
    //  (In actuality, the From* methods will automatically detect the format and load
    //  the key correctly.  For example, if a PuTTY private key is passed to FromOpenSshPrivateKey,
    //  it  will still load correctly.)
    success = sshkey.FromOpenSshPrivateKey(strKey);
    if (success != true) {
        std::cout << sshkey.lastErrorText() << "\r\n";
    }
    else {
        std::cout << "Loaded OpenSSH private key." << "\r\n";
        return;
    }

    //  If the key is an OpenSSH public key:
    success = sshkey.FromOpenSshPublicKey(strKey);
    if (success != true) {
        std::cout << sshkey.lastErrorText() << "\r\n";
    }
    else {
        std::cout << "Loaded OpenSSH public key." << "\r\n";
        return;
    }

    //  If the key is a PuTTY private key:
    success = sshkey.FromPuttyPrivateKey(strKey);
    if (success != true) {
        std::cout << sshkey.lastErrorText() << "\r\n";
    }
    else {
        std::cout << "Loaded PuTTY private key." << "\r\n";
        return;
    }

    //  If the key is an RFC 4716 public key:
    success = sshkey.FromRfc4716PublicKey(strKey);
    if (success != true) {
        std::cout << sshkey.lastErrorText() << "\r\n";
    }
    else {
        std::cout << "Loaded RFC 4716 public key." << "\r\n";
    }
    }