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PHP ActiveX Examples

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(PHP ActiveX) Generate DSA SSH Key

Generates a DSA SSH key and saves to various public and private key file formats (OpenSSH and PuTTY).

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

$key = new COM("Chilkat_9_5_0.SshKey");

//  numBits should be a minimum of 1024 and
//  a multiple of 64.  Typical values are
//  1024 or 2048.
$numBits = 2048;
$success = $key->GenerateDsaKey($numBits);
if ($success != 1) {
    print 'Invalid numBits passed to DSA key generation method.' . "\n";
    exit;
}

//  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).

//  Export the DSA private key to OpenSSH, PuTTY, and XML and save.
$exportEncrypted = 0;
$exportedKey = $key->toOpenSshPrivateKey($exportEncrypted);
//  Chilkat provides a SaveText method for convenience...
$success = $key->SaveText($exportedKey,'privkey_openssh_unencrypted.pem');

//  Export with encryption to OpenSSH private key format:
$key->Password = 'secret';
$exportEncrypted = 1;
$exportedKey = $key->toOpenSshPrivateKey($exportEncrypted);
$success = $key->SaveText($exportedKey,'privkey_openssh_encrypted.pem');

//  Export the DSA private key to unencrypted PuTTY format:
$exportEncrypted = 0;
$exportedKey = $key->toPuttyPrivateKey($exportEncrypted);
$success = $key->SaveText($exportedKey,'privkey_putty_unencrypted.ppk');

//  Export the DSA private key to encrypted PuTTY format:
$key->Password = 'secret';
$exportEncrypted = 1;
$exportedKey = $key->toPuttyPrivateKey($exportEncrypted);
$success = $key->SaveText($exportedKey,'privkey_putty_encrypted.ppk');

//  Export private key to XML:
$exportedKey = $key->toXml();
$success = $key->SaveText($exportedKey,'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,'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,'pubkey_openSsh.pub');

print 'Finished.' . "\n";

?>

 

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