diff --git a/Cargo.toml b/Cargo.toml
index 6807627..e80cc4d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,8 +15,8 @@ structopt = "0.3.14"
 chrono = "0.4.11"
 futures = "0.3.5"
 toml = "0.5.6"
-ilmp = { git = "https://github.com/izzabelle/ilmp" }
-# ilmp = { path = "../ilmp"}
+# ilmp = { git = "https://github.com/izzabelle/ilmp" }
+ilmp = { path = "../ilmp"}
 ring = "0.16.13"
 thiserror = "1.0.18"
 orion = "0.15.1"
diff --git a/src/client.rs b/src/client.rs
index 2f2b63e..6427928 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -4,12 +4,8 @@ use crate::Result;
 use async_std::{io, net::TcpStream, task};
 use futures::io::{ReadHalf, WriteHalf};
 use futures_util::io::AsyncReadExt;
-use ilmp::{
-    encrypt::{EncryptKind, Encryption, SymmetricEncrypt},
-    Sendable,
-};
+use ilmp::{encrypt::SymmetricEncrypt, Sendable};
 use lazy_static::lazy_static;
-use orion::aead;
 use std::sync::Mutex;
 
 lazy_static! {
@@ -47,12 +43,8 @@ pub async fn outgoing(mut write: WriteHalf<TcpStream>, encryption: SymmetricEncr
 
 pub async fn incoming(mut read: ReadHalf<TcpStream>, encryption: SymmetricEncrypt) -> Result<()> {
     loop {
-        let packet = ilmp::read(&mut read).await?;
-        if let Some(mut packet) = packet {
-            if packet.encrypt_kind == EncryptKind::Symmetric {
-                packet.contents = aead::open(encryption.key().unwrap(), &packet.contents)?;
-            }
-
+        let packet = ilmp::read(&mut read, &encryption).await?;
+        if let Some(packet) = packet {
             let res = match packet.kind {
                 ilmp::PacketKind::Message => ilmp::Message::from_packet(packet),
                 _ => panic!("bad packet"),
diff --git a/src/lib.rs b/src/lib.rs
index 451d89a..1ee9c4f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -45,15 +45,16 @@ pub async fn initialize_connection(
     ilmp::write(write, agreement_packet, &encrypt::NoEncrypt::new()).await?;
 
     // receive peer's pub key
-    let packet = ilmp::read(read).await?.unwrap();
+    let packet = ilmp::read(read, &encrypt::NoEncrypt::new()).await?.unwrap();
     let agreement_packet = ilmp::Agreement::from_packet(packet)?;
     let peer_pub_key =
         agreement::UnparsedPublicKey::new(&agreement::X25519, agreement_packet.public_key);
 
     // generate aead key
     agreement::agree_ephemeral(my_priv_key, &peer_pub_key, MsgError::Ring, |key_material| {
-        let key_material =
-            digest::digest(&digest::SHA256, key_material.as_ref().into()).as_ref().to_vec();
+        let key_material = digest::digest(&digest::SHA256, key_material.as_ref().into())
+            .as_ref()
+            .to_vec();
         Ok(aead::SecretKey::from_slice(&key_material)?)
     })
 }
diff --git a/src/server.rs b/src/server.rs
index 533f804..877b5e1 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -11,7 +11,6 @@ use ilmp::encrypt;
 use ilmp::encrypt::Encryption;
 use ilmp::Sendable;
 use lazy_static::lazy_static;
-use orion::aead;
 use std::collections::HashMap;
 use uuid::Uuid;
 
@@ -58,12 +57,8 @@ async fn handle_stream(
     encryption: encrypt::SymmetricEncrypt,
 ) -> Result<()> {
     loop {
-        let packet = ilmp::read(&mut stream).await?;
-        if let Some(mut packet) = packet {
-            if packet.encrypt_kind == encrypt::EncryptKind::Symmetric {
-                packet.contents = aead::open(encryption.key().unwrap(), &packet.contents)?;
-            }
-
+        let packet = ilmp::read(&mut stream, &encryption).await?;
+        if let Some(packet) = packet {
             let res = match packet.kind {
                 ilmp::PacketKind::Message => ilmp::Message::from_packet(packet),
                 _ => panic!("bad packet"),
@@ -80,9 +75,10 @@ async fn handle_stream(
     Ok(())
 }
 
-async fn relay_packet<T>(packet: T, encryption: &encrypt::SymmetricEncrypt) -> Result<()>
+async fn relay_packet<T, E>(packet: T, encryption: &E) -> Result<()>
 where
     T: Clone + Sendable,
+    E: Encryption,
 {
     let mut locked_write_streams = WRITE_STREAMS.lock().await;
     let stream = futures::stream::iter(locked_write_streams.iter_mut());