diff --git a/src/lib.rs b/src/lib.rs
index c073e2b..8999a9b 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -25,7 +25,6 @@ extern crate rand;
 extern crate rand_core;
 
 extern crate bincode;
-//extern crate sodiumoxide;
 extern crate secp256k1;
 extern crate time;
 extern crate sha2;
@@ -39,7 +38,6 @@ extern crate libc;
 extern crate rand_xorshift;
 extern crate core;
 
-//pub mod sym;
 pub mod cl;
 pub mod ccs08;
 pub mod ped92;
@@ -53,9 +51,6 @@ use std::fmt;
 use std::str;
 use bincode::SizeLimit::Infinite;
 use bincode::rustc_serialize::{encode, decode};
-//use sodiumoxide::randombytes;
-//use sodiumoxide::crypto::hash::sha512;
-//use sha2::Sha512;
 use std::collections::HashMap;
 use ff::{Rand, Field};
 
@@ -116,14 +111,11 @@ pub mod bidirectional {
     use util;
     use wallet;
     use pairing::Engine;
-    //use sodiumoxide;
     use cl;
     // for blind signature
     use secp256k1;
     // for on-chain keys
     use HashMap;
-    //use sodiumoxide::crypto::hash::sha512;
-    //use sha2::Sha512;
 
     use serde::{Serialize, Deserialize};
     use util::{RevokedMessage, hash_to_slice};
diff --git a/src/util.rs b/src/util.rs
index 8bda47b..401a44f 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -1,5 +1,4 @@
 use super::*;
-//use sodiumoxide::crypto::hash::sha512;
 use pairing::Engine;
 use ff::{PrimeField};
 use rand::Rng;