A simple bypass of opticcdn protection, set the cookie "optic_auth" to the value the method returns (returns null on failure)

OpticCdn.cs

public static string GetOpticCdnCookie(string source)
{
    var matches = Regex.Matches(source, "var .* = \"(.*)\"");
    if (matches.Count != 10) return null;
    var combined = string.Concat(matches[0].Groups[1].Value, matches[1].Groups[1].Value,
        matches[2].Groups[1].Value, matches[3].Groups[1].Value, matches[8].Groups[1].Value,
        matches[9].Groups[1].Value, matches[4].Groups[1].Value, matches[5].Groups[1].Value,
        matches[6].Groups[1].Value, matches[7].Groups[1].Value);
    using (var sha = new SHA1Managed())
    {
        return BitConverter.ToString(sha.ComputeHash(Encoding.UTF8.GetBytes(combined))).Replace("-", "").ToLowerInvariant().Substring(0, 30);
    }
}