first commit

libraries/vendor/web-auth/cose-lib/src/Key/OkpKey.php

@@ -0,0 +1,110 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Cose\Key;
+
+use InvalidArgumentException;
+use function array_key_exists;
+use function in_array;
+
+/**
+ * @final
+ * @see \Cose\Tests\Key\OkpKeyTest
+ */
+class OkpKey extends Key
+{
+    final public const CURVE_X25519 = 4;
+
+    final public const CURVE_X448 = 5;
+
+    final public const CURVE_ED25519 = 6;
+
+    final public const CURVE_ED448 = 7;
+
+    final public const CURVE_NAME_X25519 = 'X25519';
+
+    final public const CURVE_NAME_X448 = 'X448';
+
+    final public const CURVE_NAME_ED25519 = 'Ed25519';
+
+    final public const CURVE_NAME_ED448 = 'Ed448';
+
+    final public const DATA_CURVE = -1;
+
+    final public const DATA_X = -2;
+
+    final public const DATA_D = -4;
+
+    private const SUPPORTED_CURVES_INT = [
+        self::CURVE_X25519,
+        self::CURVE_X448,
+        self::CURVE_ED25519,
+        self::CURVE_ED448,
+    ];
+
+    private const SUPPORTED_CURVES_NAME = [
+        self::CURVE_NAME_X25519,
+        self::CURVE_NAME_X448,
+        self::CURVE_NAME_ED25519,
+        self::CURVE_NAME_ED448,
+    ];
+
+    /**
+     * @param array<int|string, mixed> $data
+     */
+    public function __construct(array $data)
+    {
+        foreach ([self::DATA_CURVE, self::TYPE] as $key) {
+            if (is_numeric($data[$key])) {
+                $data[$key] = (int) $data[$key];
+            }
+        }
+        parent::__construct($data);
+        if ($data[self::TYPE] !== self::TYPE_OKP && $data[self::TYPE] !== self::TYPE_NAME_OKP) {
+            throw new InvalidArgumentException('Invalid OKP key. The key type does not correspond to an OKP key');
+        }
+        if (! isset($data[self::DATA_CURVE], $data[self::DATA_X])) {
+            throw new InvalidArgumentException('Invalid EC2 key. The curve or the "x" coordinate is missing');
+        }
+        if (is_numeric($data[self::DATA_CURVE])) {
+            if (! in_array((int) $data[self::DATA_CURVE], self::SUPPORTED_CURVES_INT, true)) {
+                throw new InvalidArgumentException('The curve is not supported');
+            }
+        } elseif (! in_array($data[self::DATA_CURVE], self::SUPPORTED_CURVES_NAME, true)) {
+            throw new InvalidArgumentException('The curve is not supported');
+        }
+    }
+
+    /**
+     * @param array<int|string, mixed> $data
+     */
+    public static function create(array $data): self
+    {
+        return new self($data);
+    }
+
+    public function x(): string
+    {
+        return $this->get(self::DATA_X);
+    }
+
+    public function isPrivate(): bool
+    {
+        return array_key_exists(self::DATA_D, $this->getData());
+    }
+
+    public function d(): string
+    {
+        if (! $this->isPrivate()) {
+            throw new InvalidArgumentException('The key is not private.');
+        }
+
+        return $this->get(self::DATA_D);
+    }
+
+    public function curve(): int|string
+    {
+        return $this->get(self::DATA_CURVE);
+    }
+}