PHP

Save a Public Key as an XML File

Demonstrates the Chilkat PublicKey.SaveXmlFile method, which saves the public key as Chilkat XML (the same text as GetXml) to a file. The only argument is the destination path.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: The file-writing form of GetXml, for interoperating with .NET or XML-signature software that reads XML key values. As a public key it is not sensitive, so the resulting file can be shared. No byte-order mark or extra line-ending changes are added.

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<?php

use Chilkat2\PublicKey;

// Load a public key to export.  LoadFromFile inspects the content, so it accepts DER, PEM, XML,
// JWK, and other supported representations.
$pubKey = new PublicKey();
try {
    $pubKey->LoadFromFile('qa_data/public.pem');

    // Save the public key as Chilkat XML (the same text as GetXml).
    $pubKey->SaveXmlFile('qa_output/public_key.xml');
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

echo "Saved.\n";