BFV API design

include/bfv.hpp

@@ -3,21 +3,35 @@
 namespace homcert::bfv {
 
 /*
-Note -> Ciphertexts track what parts of them are actually utilized!
+TODO
+Device handles pluggability of implementations (e.g. SEAL vs. GPU)
+Operations are queued on device so the device can parallelize ops
 */
 
-class handle {
-	// handles reference counting and garbage collection
-};
-
-class device {
-	// ...
-public:
-	virtual handle make_context() = 0;
-	virtual handle allocate_plaintext() = 0;
-	virtual handle allocate_ciphertext() = 0;
-	virtual void enqueue_op() = 0;
-	virtual void process_queue() = 0;
-};
+/*
+No device class at all, just the context class which is handed to system as shared_ptr
+activate_context(std::shared_ptr<bfv::context> ctx) -> thread local pointer is set
+Raw ciphertext and plaintext classes always have the full 8192 coefficients (defined in context as static constexpr)
+bfv::vector<...>
+	-> can be plaintext or ciphertext
+	-> can be base (owns plain-/ciphertext) or component (view to part of base)
+	-> can be local or remote
+	-> can be a single vector or multiple vectors/components (variadic)
+		-> arithmetic with component masks it out
+		-> arithmetic with base does operation on all components
+	-> tracks multiplicative depth
+		-> warning/error if multiplicative depth exceeds limit
+		-> use bootstrap member function to handle the warnings/errors
+		-> callbacks to reach peer in context
+			-> bootstrap_client (unchecked, just raw bootstrap, checks happen at an upper layer using other callbacks)
+			-> bootstrap_server_await (waits for client to make request)
+			-> bootstrap_server_serve (called immediately after request received with value to be returned)
+	-> automatically does secure reveal when cipher is transformed to plain
+	-> queues operations until used (cast to plaintext, communication with peer)
+Programs are defined TWICE
+	-> local stuff is executed
+	-> remote stuff is hosted (e.g. bootstrapping server)
+	-> defined once from each side (differ e.g. in the plaintext inputs etc.)
+*/
 
 }