README

Helper library for handling supercop-ref10 ed25519 digital signatures

Heads-up

This library makes use of a compiled command-line version of orlp/ed25519, namely finwo/supercop-cli. It uses this command-line utility through the exec function, which may have been blocked by your hosting provider.

Work-in-progress

This library is still a work-in-progress and not all features you may expect have been implemented yet.

TODO:

• Shared-secret generation between different keys (a.k.a. key exchange)
• Loading a public-only key

API

use Appvise\Supercop\Key;

// Generate or keys for this example
$keypair = Key::generate();
$keypair = Key::fromFile("/path/to/key/file");

// Generate a signature
$signature = $keypair->sign("hello world");

// Signature validation
var_dump($keypair->verify("hello world", $signature   )); // true
var_dump($keypair->verify("HELLO WORLD", $signature   )); // false
var_dump($keypair->verify("hello-world", $signature   )); // false
var_dump($keypair->verify("hello world", "invalid-sig")); // false
var_dump($keypair->verify("hello world", "invalid-sig")); // false