PHP

Load a Private Key from XML Text

Demonstrates the Chilkat PrivateKey.LoadXml method, which loads a private key from XML text. The only argument is the XML string. Supported roots include RSAKeyValue, DSAKeyValue, ECCKeyValue, and Ed25519KeyValue.

Background: XML key representations such as RSAKeyValue come from the .NET/XML-DSIG world, where keys are exchanged as XML elements. This loads that form — the inverse of GetXml — which is handy for interoperating with .NET code or systems built around XML signatures. It is a plaintext format, so protect the XML like any unencrypted key material.

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<?php

use Chilkat2\PrivateKey;

// Demonstrates the PrivateKey.LoadXml method, which loads a private key from XML text.  The only
// argument is the XML string.  Supported roots include RSAKeyValue, DSAKeyValue, ECCKeyValue,
// and Ed25519KeyValue.

$privKey = new PrivateKey();

// The XML text of a private key (for example as produced by GetXml).
$xmlText = '<RSAKeyValue><Modulus>...</Modulus><Exponent>AQAB</Exponent>...</RSAKeyValue>';

try {
    $privKey->LoadXml($xmlText);
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

echo 'Loaded a ', $privKey->KeyType, " private key.\n";