Unicode C++

Generate RSA SSH Key

See more SSH Key Examples

Generates an RSA SSH key and saves to various public and private key file formats (OpenSSH and PuTTY). Unicode C++

#include <CkSshKeyW.h>

void ChilkatSample(void)
    {
    bool success = false;

    CkSshKeyW key;

    //  numBits may range from 384 to 4096.  Typical values are
    //  1024 or 2048.  (must be a multiple of 64)
    //  A good choice for the exponent is 65537.  Chilkat recommends
    //  always using this value.
    int numBits = 2048;
    int exponent = 65537;
    success = key.GenerateRsaKey(numBits,exponent);
    if (success != true) {
        wprintf(L"Bad params passed to RSA key generation method.\n");
        return;
    }

    //  Note: Generating a public/private key pair is CPU intensive
    //  and may take a short amount of time (more than few seconds,
    //  but less than a minute).

    const wchar_t *exportedKey = 0;
    bool exportEncrypted;

    //  Export the RSA private key to OpenSSH, PuTTY, and XML and save. 
    exportEncrypted = false;
    exportedKey = key.toOpenSshPrivateKey(exportEncrypted);
    //  Chilkat provides a SaveText method for convenience...
    success = key.SaveText(exportedKey,L"privkey_openssh_unencrypted.pem");

    //  Export with encryption to OpenSSH private key format:
    key.put_Password(L"secret");
    exportEncrypted = true;
    exportedKey = key.toOpenSshPrivateKey(exportEncrypted);
    success = key.SaveText(exportedKey,L"privkey_openssh_encrypted.pem");

    //  Export the RSA private key to unencrypted PuTTY format:
    exportEncrypted = false;
    exportedKey = key.toPuttyPrivateKey(exportEncrypted);
    success = key.SaveText(exportedKey,L"privkey_putty_unencrypted.ppk");

    //  Export the RSA private key to encrypted PuTTY format:
    key.put_Password(L"secret");
    exportEncrypted = true;
    exportedKey = key.toPuttyPrivateKey(exportEncrypted);
    success = key.SaveText(exportedKey,L"privkey_putty_encrypted.ppk");

    //  Export private key to XML:
    exportedKey = key.toXml();
    success = key.SaveText(exportedKey,L"privkey.xml");

    //  ----------------------------------------------------
    //  Now for the public key....
    //  ----------------------------------------------------

    //  The Secure Shell (SSH) Public Key File Format
    //  is documented in RFC 4716.
    exportedKey = key.toRfc4716PublicKey();
    success = key.SaveText(exportedKey,L"pubkey_rfc4716.pub");

    //  OpenSSH has a separate public-key file format, which 
    //  is also supported by Chilkat SshKey:
    exportedKey = key.toOpenSshPublicKey();
    success = key.SaveText(exportedKey,L"pubkey_openSsh.pub");

    wprintf(L"Finished.\n");
    }