1 files changed, 72 insertions, 0 deletions

diff --git a/prog/ž/test.php b/prog/ž/test.php
new file mode 100755
index 0000000..dc3ab50
--- /dev/null
+++ b/prog/ž/test.php
@@ -0,0 +1,72 @@
+#!/usr/bin/php
+<?php
+
+require "vendor/autoload.php";
+
+use Mdanter\Ecc\Crypto\Signature\SignHasher;
+use Mdanter\Ecc\Crypto\Key\PublicKey;
+use Mdanter\Ecc\Primitives\Point;
+use Mdanter\Ecc\EccFactory;
+use Mdanter\Ecc\Crypto\Signature\Signer;
+use Mdanter\Ecc\Serializer\PrivateKey\DerPrivateKeySerializer;
+use Mdanter\Ecc\Serializer\Signature\DerSignatureSerializer;
+use Mdanter\Ecc\Math;
+use Mdanter\Ecc\Math\GmpMath;
+
+// ECDSA domain is defined by curve/generator/hash algorithm,
+// which a verifier must be aware of.
+
+$adapter = EccFactory::getAdapter();
+$generator = EccFactory::getNistCurves()->generator384();
+$useDerandomizedSignatures = true;
+$algorithm = 'sha384';
+$derSerializer = new DerPrivateKeySerializer($adapter);
+
+## generate der key
+$private = $generator->createPrivateKey();
+echo "privkey: " .  $private->getSecret() . PHP_EOL;
+$der = $derSerializer->serialize($private);
+$math = new GmpMath();
+// echo bin2hex($math->intToString($private->getSecret())) . PHP_EOL;
+// echo bin2hex($der) . PHP_EOL;
+
+## You'll be restoring from a key, as opposed to generating one.
+$key = $derSerializer->parse($der);
+
+$document = 'I am writing today...';
+
+$hasher = new SignHasher($algorithm, $adapter);
+$hash = $hasher->makeHash($document, $generator);
+
+echo "message: $document" . PHP_EOL;
+echo "hash: $hash" . PHP_EOL;
+
+# Derandomized signatures are not necessary, but is avoids
+# the risk of a low entropy RNG, causing accidental reuse
+# of a k value for a different message, which leaks the
+# private key.
+if ($useDerandomizedSignatures) {
+    $random = \Mdanter\Ecc\Random\RandomGeneratorFactory::getHmacRandomGenerator($key, $hash, $algorithm);
+} else {
+    $random = \Mdanter\Ecc\Random\RandomGeneratorFactory::getRandomGenerator();
+}
+$randomK = $random->generate($generator->getOrder());
+
+$signer = new Signer($adapter);
+$signature = $signer->sign($key, $hash, $randomK);
+
+# $serializer = new DerSignatureSerializer();
+# $serializedSig = $serializer->serialize($signature);
+# echo base64_encode($serializedSig) . PHP_EOL;
+
+echo "signature: r=" . $signature->getR() . " s=" . $signature->getS() . PHP_EOL;
+
+$pubkey = $key->getPublicKey();
+$x = $pubkey->getPoint()->getX();
+$y = $pubkey->getPoint()->getY();
+
+echo "public key: x=" . $x . " y=" . $y . PHP_EOL;
+
+$publickey = new PublicKey($adapter, $generator, new Point($adapter, EccFactory::getNistCurves()->curve384(), $x, $y));
+
+echo "signature check " . ($signer->verify($publickey, $signature, $hash) ? "passed" : "failed") . PHP_EOL;