Start writing the interfaces for session and the account objects

1 files changed, 57 insertions, 0 deletions

diff --git a/include/axolotl/account.hh b/include/axolotl/account.hh
new file mode 100644
index 0000000..5edb799
--- /dev/null
+++ b/include/axolotl/account.hh
@@ -0,0 +1,57 @@
+#ifndef AXOLOTL_ACCOUNT_HH_
+#define AXOLOTL_ACCOUNT_HH_
+
+#include "axolotl/list.hh"
+
+#include <cstdint>
+
+namespace axolotl {
+
+
+struct LocalKey {
+    std::uint32_t id;
+    Curve25519KeyPair key;
+};
+
+
+struct SignedKey : LocalKey {
+    std::uint8_t signature[64];
+};
+
+
+static std::size_t const MAX_ONE_TIME_KEYS = 100;
+
+struct Account {
+    LocalKey identity_key;
+    LocalKey last_resort_one_time_key;
+    List<LocalKey, MAX_ONE_TIME_KEYS> one_time_keys;
+
+    /** Number of random bytes needed to create a new account */
+    std::size_t new_account_random_length();
+
+    /** Create a new account. Returns NOT_ENOUGH_RANDOM if the number of random
+     * bytes is too small. */
+    ErrorCode new_account(
+        uint8_t const * random, std::size_t random_length
+    );
+
+    /** The number of bytes needed to persist this account. */
+    std::size_t pickle_length();
+
+    /** Persists an account as a sequence of bytes
+     * Returns the number of output bytes used. */
+    std::size_t pickle(
+        std::uint8_t * output, std::size_t output_length
+    );
+
+    /** Loads an account from a sequence of bytes.
+     * Returns 0 on success, or std::size_t(-1) on failure. */
+    std::size_t unpickle(
+        std::uint8_t * input, std::size_t input_length
+    );
+};
+
+
+} // namespace axolotl
+
+#endif /* AXOLOTL_ACCOUNT_HH_ */