Feature gate encryption feature

Signed-off-by: trivernis <trivernis@protonmail.com>

Cargo.lock

@@ -120,7 +120,7 @@ dependencies = [
 
 [[package]]
 name = "bromine"
-version = "0.20.0"
+version = "0.20.1"
 dependencies = [
  "async-trait",
  "bincode",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "bromine"
-version = "0.20.0"
+version = "0.20.1"
 authors = ["trivernis <trivernis@protonmail.com>"]
 edition = "2018"
 readme = "README.md"
@@ -28,15 +28,15 @@ async-trait = "0.1.52"
 num_enum = "0.5.7"
 futures-core = "0.3.21"
 trait-bound-typemap = "0.3.3"
+bytes = "1.1.0"
 rmp-serde = { version = "1.0.0", optional = true }
 bincode = { version = "1.3.3", optional = true }
 serde_json = { version = "1.0.79", optional = true }
-bytes = "1.1.0"
-chacha20poly1305 = "0.9.0"
-x25519-dalek = "1.2.0"
-rand = "0.8.5"
-rand_core = "0.6.3"
-sha2 = "0.10.2"
+chacha20poly1305 = {version = "0.9.0", optional = true}
+x25519-dalek = {version = "1.2.0", optional = true}
+rand = {version = "0.8.5", optional = true}
+rand_core = {version = "0.6.3", optional = true}
+sha2 = {version = "0.10.2", optional = true}
 
 [dependencies.serde]
 optional = true
@@ -73,6 +73,7 @@ features = ["macros", "rt-multi-thread"]
 
 [features]
 default = []
+encryption_layer = ["chacha20poly1305", "sha2", "rand", "x25519-dalek", "rand_core"]
 serialize = ["serde"]
 serialize_rmp = ["serialize", "rmp-serde"]
 serialize_bincode = ["serialize", "bincode"]

src/protocol/encrypted/mod.rs

@@ -5,7 +5,7 @@ mod protocol_impl;
 use bytes::{BufMut, Bytes, BytesMut};
 pub use io_impl::*;
 pub use protocol_impl::*;
-use rand_core::RngCore;
+use rand::RngCore;
 use std::future::Future;
 use std::io;
 use std::pin::Pin;

src/protocol/mod.rs

@@ -1,5 +1,6 @@
 pub mod tcp;
 
+#[cfg(feature = "encryption_layer")]
 pub mod encrypted;
 #[cfg(unix)]
 pub mod unix_socket;

tests/test_encryption.rs

@@ -1,3 +1,4 @@
+#![cfg(feature = "encryption_layer")]
 use crate::utils::call_counter::increment_counter_for_event;
 use crate::utils::protocol::TestProtocolListener;
 use crate::utils::{get_free_port, start_server_and_client};