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1public static function createSignature(array $params=[], string $algo='SHA256'): string
2    {
3
4        $SECRET_KEY = env('SIGNATURE_SECRET_KEY');
5
6
7        ksort($params);
8
9        $paramString = implode('', $params);
10
11        return hash('SHA256', $paramString . $SECRET_KEY);
12    }