mirror of
https://github.com/glebd/cocoafob.git
synced 2026-05-31 06:57:36 +00:00
Eddy Gammon
118 lines
3.5 KiB
PHP
118 lines
3.5 KiB
PHP
<?php
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include('base32.php');
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$lic = new License_Generator;
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$code = $lic->make_license('GESTOBM30', 'Sandro Noel', 'sandro.noel@gesosoft.com');
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// to verify a Key from cocoafob place it in here.
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echo "<br><br><strong>Verify the cocoafob License<br></strong>";
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?>
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<form method="post" action="Generate.php">
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<dl>
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<dt><label for="key">cocoafob License</label></dt>
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<dt><input type="text" name="key" value="" id="key" /></dd>
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<dd><input type="submit"/></dd>
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</dl>
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</form>
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<?php
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if ($_POST["key"]){
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$key = $_POST["key"];
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$result = $lic->verify_license('GESTOBM30', 'Sandro Noel', 'sandro.noel@gesosoft.com',$key);
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}
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?>
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<?php
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class License_Generator
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{
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private $private_key;
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private $public_key;
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#-#############################################
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# desc: constructor
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function License_Generator(){
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//NOTE : should read thm from the database instead.
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//read the Private Key from disk
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$this->private_key = file_get_contents('./dsa_priv.pem', FILE_USE_INCLUDE_PATH);
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//read the public Key from disk
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$this->public_key = file_get_contents('./dsa_pub.pem', FILE_USE_INCLUDE_PATH);
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}#-#constructor()
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#-#############################################
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# desc: Create a license
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public function make_license($product_code, $name, $email)
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{
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// Generae a sha1 digest with the passed parameters.
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$stringData = $product_code.",".$name.",".$email;
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echo "Data: ".$stringData."<br>";
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$binary_signature ="";
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openssl_sign($stringData, $binary_signature, $this->private_key, OPENSSL_ALGO_DSS1);
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echo "Binary Sig: ".$binary_signature."<br>";
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// base 32 encode the stuff
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$encoded = base32_encode($binary_signature);
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echo "Original Key: ". $encoded ."<br>";
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echo "Key Length: ". strlen($encoded) ."<br>";
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// replace O with 8 and I with 9
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$replacement = str_replace("O", "8", str_replace("I", "9", $encoded));
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echo "Replaced: " .$replacement . "<br>";
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//remove padding if any.
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$padding = trim(str_replace("=", "", $replacement));
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echo "Stripped: " .$padding . "<br>";
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$dashed = rtrim(chunk_split($padding, 5,"-"));
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$theKey = substr($dashed, 0 , strlen($dashed) -1);
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echo "Dashed: " .$theKey . "<br><br>";
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echo "<strong>Verify the just created License<br></strong>";
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$this->verify_license($product_code, $name, $email, $theKey);
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return $theKey;
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}
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#-#############################################
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# desc: Verify License
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public function verify_license($product_code, $name, $email, $lic)
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{
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echo "Original: <strong>" .$lic . "</strong><br>";
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// replace O with 8 and I with 9
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$replacement = str_replace("8", "O", str_replace("9", "I", $lic));
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echo "Replaced: " .$replacement . "<br>";
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//remove Dashes.
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$undashed = trim(str_replace("-", "", $replacement));
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echo "Undashed: " .$undashed . "<br>";
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echo "Key Length: ". strlen($undashed) ."<br>";
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// Pad the output length to a multiple of 8 with '=' characters
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$desiredLength = strlen($undashed);
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if($desiredLength % 8 != 0) {
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$desiredLength += (8 - ($desiredLength % 8));
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$undashed = str_pad($undashed, $desiredLength, "=");
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}
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echo "padded: " .$undashed . "<br>";
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// decode Key
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$decodedHash = base32_decode($undashed);
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echo "Binary Sig: ".$decodedHash. "<br>";
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//digest the original Data
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$stringData = $product_code.",".$name.",".$email;
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$ok = openssl_verify($stringData, $decodedHash, $this->public_key, OPENSSL_ALGO_DSS1);
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if ($ok == 1) {
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echo "<strong>GOOD</strong>";
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} elseif ($ok == 0) {
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echo "<strong>BAD</strong>";
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} else {
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echo "<strong>ugly, error checking signature</strong>";
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}
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}
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} # Class License
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?>
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