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<?php
$result = null;
if (isset($_GET["op"])) {
if (!file_exists('/tmp/gpg')) {
mkdir('/tmp/gpg', 0700, true);
$result = shell_exec("gpg --homedir /tmp/gpg --import --trust-model always ../arf20.ecc.asc 2>&1");
echo "<pre>$result</pre>";
$result = shell_exec("echo \"071FD0F02A0292F08EE1A121EB74F0C93E429F8E:5\n6DDA5B0BF8F154C4C0542B92DEBF11CAEEFA5962:5\" | gpg --homedir /tmp/gpg --import-ownertrust 2>&1");
echo "<pre>$result</pre>";
}
$data = $_GET["data"];
if ($_GET["op"] == "Verify") {
if (preg_match("[^a-zA-Z0-9+/=- ]+", $data) == 1)
die("invalid message");
$result = shell_exec("echo \"".$data."\" | gpg --homedir /tmp/gpg --no-tty --trust-model always --verify 2>&1");
} else if ($_GET["op"] == "Encrypt") {
if (preg_match("[\"\''\\]+", $data) == 1)
die("invalid character(s)");
$result = shell_exec("echo \"".$data."\" | gpg --homedir /tmp/gpg --no-tty --always-trust --encrypt --armor -r 071FD0F02A0292F08EE1A121EB74F0C93E429F8E 2>&1");
}
}
?>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<link rel="stylesheet" type="text/css" href="https://arf20.com/style.css">
<title>ARFNET</title>
</head>
<body>
<header><a href="/">
<img src="http://arf20.com/arfnet_logo.png" width="64"><span class="title"><strong>ARFNET</strong></span>
</a></header>
<hr>
<main>
<h2 class="center">OpenPGP</h2>
<form action="/php/pgp.php" method="GET">
<h3>Verify something arf20 said, or encrypt something for arf20</h3>
<textarea name="data" rows="25" cols="80"><?php echo $_GET["data"]; ?></textarea><br>
<input type="submit" name="op" value="Verify"><input type="submit" name="op" value="Encrypt"><br>
</form>
<?php
if (isset($result)) {
if ($result === null) {
echo "Null";
} else if ($result === false) {
echo "False";
} else {
echo "<textarea readonly rows=\"25\" cols=\"80\">\n$result\n</textarea>";
}
}
?>
</main>
</body>
</html>
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