ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_from_string( string $ctx, string $msg, int $hash_alg ): string

637    public static function ristretto255_scalar_from_string($ctx, $msg, $hash_alg)638    {639        $h = array_fill(0, 64, 0);640        $h_be = self::stringToIntArray(641            self::h2c_string_to_hash(642                self::HASH_SC_L, $ctx, $msg, $hash_alg643            )644        );645 646        for ($i = 0; $i < self::HASH_SC_L; ++$i) {647            $h[$i] = $h_be[self::HASH_SC_L - 1 - $i];648        }649        return self::ristretto255_scalar_reduce(self::intArrayToString($h));650    }