module Nostr
  class Crypto
    BN_BASE: Integer
    CIPHER_CURVE: String
    CIPHER_ALGORITHM: String

    def encrypt_text: (String, String, String) -> String
    def decrypt_text: (String, String, String) -> String
    def sign_event: (Event, String) -> Event

    private

    def compute_shared_key: (String, String) -> String
    def hash_event:(Event) -> String
  end
end