separated crypto module into its own crate

Cargo.toml

@@ -20,7 +20,7 @@ travis-ci = { repository = "poanetwork/hbbft" }
 bincode = "1.0.0"
 byteorder = "1.2.3"
 env_logger = "0.5.10"
-error-chain = "0.11.0"
+error-chain = "0.12.0"
 init_with = "1.1.0"
 itertools = "0.7"
 log = "0.4.1"
@@ -33,9 +33,10 @@ reed-solomon-erasure = "3.1.0"
 ring = "^0.12"
 serde = "1.0.55"
 serde_derive = "1.0.55"
+threshold_crypto = { git = "https://github.com/poanetwork/threshold_crypto" }
 
 [features]
-serialization-protobuf = [ "protobuf", "protobuf-codegen-pure" ]
+serialization-protobuf = [ "protobuf", "protobuf-codegen-pure", "threshold_crypto/serialization-protobuf" ]
 
 [build-dependencies]
 protobuf-codegen-pure = { version = "2.0.0", optional = true }

examples/consensus-node.rs

@@ -10,6 +10,7 @@ extern crate hbbft;
 extern crate log;
 extern crate pairing;
 extern crate protobuf;
+extern crate threshold_crypto as crypto;
 
 mod network;
 

examples/network/node.rs

@@ -34,17 +34,18 @@
 //! the consensus `result` is not an error then every successfully terminated
 //! consensus node will be the same `result`.
 
-use crossbeam;
 use std::collections::{BTreeSet, HashSet};
 use std::fmt::Debug;
 use std::marker::{Send, Sync};
 use std::net::SocketAddr;
 use std::sync::Arc;
 use std::{io, iter, process, thread, time};
 
+use crossbeam;
+use crypto::poly::Poly;
+use crypto::{SecretKey, SecretKeySet};
+
 use hbbft::broadcast::{Broadcast, BroadcastMessage};
-use hbbft::crypto::poly::Poly;
-use hbbft::crypto::{SecretKey, SecretKeySet};
 use hbbft::messaging::{DistAlgorithm, NetworkInfo, SourcedMessage};
 use hbbft::proto::message::BroadcastProto;
 use network::commst;