PHP Extension

RSA Sign using Base64 Private Key

See more RSA Examples

Signs a string using a non-encrypted RSA private key in base64 encoding. Returns the RSA signature as a base64 string. PHP Extension

<?php

include("chilkat.php");

$success = false;

// This requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

$privKey = new CkPrivateKey();

$sbPem = new CkStringBuilder();
$sbPem->AppendLine('-----BEGIN RSA PRIVATE KEY-----',true);
$sbPem->AppendLine('MIIC .... j5A==',true);
$sbPem->AppendLine('-----END RSA PRIVATE KEY-----',true);

$success = $privKey->LoadPem($sbPem->getAsString());
if ($success == false) {
    print $privKey->lastErrorText() . "\n";
    exit;
}

$rsa = new CkRsa();

$success = $rsa->UsePrivateKey($privKey);
if ($success == false) {
    print $rsa->lastErrorText() . "\n";
    exit;
}

$bd = new CkBinData();
$bd->AppendString('12345678','utf-8');

$success = $rsa->SignRawBd($bd);
if ($success == false) {
    print $rsa->lastErrorText() . "\n";
    exit;
}

// Get the base64 RSA signature.
print $bd->getEncoded('base64') . "\n";

$success = $rsa->VerifyRawBd($bd);
if ($success == false) {
    print $rsa->lastErrorText() . "\n";
    exit;
}

$strOriginal = $bd->getString('utf-8');
print $strOriginal . "\n";

?>