21 lines
546 B
PHP
21 lines
546 B
PHP
<?php
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require __DIR__ . '/config.php';
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if ($_SERVER['REQUEST_METHOD'] !== 'GET') {
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http_response_code(405);
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echo json_encode(['error' => 'Method not allowed']);
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exit;
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}
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$challenge = bin2hex(random_bytes(16));
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$timestamp = (int)(microtime(true) * 1000);
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$signature = hash_hmac('sha256', "$challenge:$timestamp:" . POW_DIFFICULTY, POW_SECRET);
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echo json_encode([
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'challenge' => $challenge,
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'difficulty' => POW_DIFFICULTY,
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'timestamp' => $timestamp,
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'signature' => $signature,
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'expires_in' => POW_TTL_SECONDS,
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]);
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