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Crypt_RSA wrapper for signing keys

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This commit is contained in:
Stephen Paul Weber 2011-07-25 15:15:17 -05:00
parent b84a2a8752
commit 379c79d3ad
1 changed files with 29 additions and 0 deletions
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29
lib/openpgp_crypt_rsa.php
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@ -110,6 +110,35 @@ class OpenPGP_Crypt_RSA {
return new OpenPGP_Message(array($sig, $message));
}
// Pass a message with a key and userid packet to sign
function sign_key_userid($packet, $hash='SHA256', $keyid=NULL) {
if(is_array($packet)) {
$packet = new OpenPGP_Message($packet);
} else if(!is_object($packet)) {
$packet = OpenPGP_Message::parse($packet);
}
$key = $this->private_key($keyid);
if(!$key || !$packet) return NULL; // Missing some data
if(!$keyid) $keyid = substr($this->key->fingerprint, -16);
$key->setHash(strtolower($hash));
$sig = $packet->signature_and_data();
$sig = $sig[1];
if(!$sig) {
$sig = new OpenPGP_SignaturePacket($packet, 'RSA', strtoupper($hash));
$sig->signature_type = 0x13;
$sig->hashed_subpackets[] = new OpenPGP_SignaturePacket_KeyFlagsPacket(array(0x01, 0x02));
$sig->hashed_subpackets[] = new OpenPGP_SignaturePacket_IssuerPacket($keyid);
$packet[] = $sig;
}
$sig->sign_data(array('RSA' => array($hash => array($key, 'sign'))));
return $packet;
}
static function crypt_rsa_key($mod, $exp, $hash='SHA256') {
$rsa = new Crypt_RSA();
$rsa->signatureMode = CRYPT_RSA_SIGNATURE_PKCS1;