Move OPAQUE into Iota and harden password authentication

iota-opaque/src/opaque/mod.rs

@@ -0,0 +1,25 @@
+mod client;
+mod context;
+mod error;
+mod profile_v1;
+mod server;
+
+pub use client::{
+    LoginClient, LoginFinish, LoginStart, OpaqueExportKey, RegistrationClient, RegistrationFinish,
+    RegistrationStart, login_start as client_login_start,
+    registration_start as client_registration_start,
+};
+pub use context::{PasswordLoginBindingV1, login_context, server_identifier};
+pub use error::{LoginFinishError, OpaqueIntegrationError};
+pub use profile_v1::{CURRENT_OPAQUE_PROFILE, OpaqueProfileV1, PasswordKsfV1};
+pub use server::{
+    LoginStartResult as ServerLoginStartResult, PasswordServerSetup, ServerLoginState,
+    deserialize_server_setup, deserialize_server_setup_owned, generate_server_setup,
+    login_finish as server_login_finish, login_start as server_login_start,
+    registration_finish as server_registration_finish,
+    registration_start as server_registration_start, serialize_server_setup,
+    validate_login_request,
+};
+
+#[cfg(test)]
+mod tests;