core: move away from db towards hash-based auth

src/core/Token.hpp

@@ -0,0 +1,23 @@
+#pragma once
+
+#include <string>
+#include <string_view>
+#include <chrono>
+
+class CToken {
+  public:
+    CToken(const std::string& fingerprint, std::chrono::system_clock::time_point issued);
+    CToken(const std::string& cookie);
+
+    std::string                           tokenCookie() const;
+    std::string                           fingerprint() const;
+    bool                                  valid() const;
+    std::chrono::system_clock::time_point issued() const;
+
+  private:
+    std::string                           getSigString();
+
+    std::string                           m_sig, m_fingerprint, m_fullCookie;
+    std::chrono::system_clock::time_point m_issued;
+    bool                                  m_valid = false;
+};