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Export Public Key to RSA DER, OpenSSL DER/PEM, XML

Demonstrates how to export a digital certificate's public key to RSA DER, OpenSSL PEM or DER, or to XML format.

Download Chilkat .NET for 2.0 Framework

Download Chilkat .NET for 1.0 / 1.1 Framework

Chilkat.Cert cert = new Chilkat.Cert();

//  Th LoadByCommonName method searches the Windows
//  Current User Certificate Store and Local Machine Certificate
//  Store for a certificate whose common name (CN) matches
//  the argument:
bool success;
success = cert.LoadByCommonName("Chilkat Software, Inc.");
if (success == false) {
    MessageBox.Show("Failed to find certificate!");
}
else {

    //  Get the PublicKey object:
    Chilkat.PublicKey pkey;

    pkey = cert.ExportPublicKey();
    if (!(pkey == null )) {

        //  Export the public key to an RSA DER file:
        pkey.SaveRsaDerFile("pubkey_rsa.der");

        //  Export to an OpenSSL DER file:
        pkey.SaveOpenSslDerFile("pubkey_openssl.der");

        //  Export to an OpenSSL PEM file:
        pkey.SaveOpenSslPemFile("pubkey_openssl.pem");

        //  Export to an XML file:
        pkey.SaveXmlFile("pubkey.xml");

        //  Get OpenSSL PEM string:
        textBox1.Text += "OpenSSL PEM Public Key:" + "\r\n";
        textBox1.Refresh();
        textBox1.Text += pkey.GetOpenSslPem() + "\r\n";
        textBox1.Refresh();

    }
    else {
        MessageBox.Show("No public key found!");
    }

}

//  The Chilkat Certificate, Certificate Store, Private Key,
//  Public Key, and Key Container classes / objects are freeware.

//  They are used by and included with the Chilkat Email,
//  Crypt, S/MIME, and other commercial Chilkat components.

 

Need a specific example? Send a request to support@chilkatsoft.com

© 2000-2008 Chilkat Software, Inc. All Rights Reserved.

Email Component · XML Parser