Update dependency versions (#1265)

* Update versions of many dependencies

* Bump version of rand

* Updates for changed APIs in rand, ring, and webpki

* Replace references to `snow::Session`

`Session` no longer exists in `snow` but the replacement is two structs `HandshakeState` and `TransportState`
Something will have to be done to harmonize `NoiseOutput.session`

* Add precise type for UnparsedPublicKey

* Update data structures/functions to match new snow's API

* Delete diff.diff

Remove accidentally committed diff file

* Remove commented lines in identity/rsa.rs

* Bump libsecp256k1 to 0.3.1

protocols/noise/src/error.rs

@@ -19,7 +19,7 @@
 // DEALINGS IN THE SOFTWARE.
 
 use libp2p_core::identity;
-use snow::SnowError;
+use snow::error::Error as SnowError;
 use std::{error::Error, fmt, io};
 
 /// libp2p_noise error type.

protocols/noise/src/io.rs

@@ -25,6 +25,7 @@ pub mod handshake;
 use futures::Poll;
 use log::{debug, trace};
 use snow;
+use snow::error::{StateProblem, Error as SnowError};
 use std::{fmt, io};
 use tokio_io::{AsyncRead, AsyncWrite};
 
@@ -55,12 +56,48 @@ impl Buffer {
     }
 }
 
+/// A passthrough enum for the two kinds of state machines in `snow`
+pub(crate) enum SnowState {
+    Transport(snow::TransportState),
+    Handshake(snow::HandshakeState)
+}
+
+impl SnowState {
+    pub fn read_message(&mut self, message: &[u8], payload: &mut [u8]) -> Result<usize, SnowError> {
+        match self {
+            SnowState::Handshake(session) => session.read_message(message, payload),
+            SnowState::Transport(session) => session.read_message(message, payload),
+        }
+    }
+
+    pub fn write_message(&mut self, message: &[u8], payload: &mut [u8]) -> Result<usize, SnowError> {
+        match self {
+            SnowState::Handshake(session) => session.write_message(message, payload),
+            SnowState::Transport(session) => session.write_message(message, payload),
+        }
+    }
+
+    pub fn get_remote_static(&self) -> Option<&[u8]> {
+        match self {
+            SnowState::Handshake(session) => session.get_remote_static(),
+            SnowState::Transport(session) => session.get_remote_static(),
+        }
+    }
+
+    pub fn into_transport_mode(self) -> Result<snow::TransportState, SnowError> {
+        match self {
+            SnowState::Handshake(session) => session.into_transport_mode(),
+            SnowState::Transport(_) => Err(SnowError::State(StateProblem::HandshakeAlreadyFinished)),
+        }
+    }
+}
+
 /// A noise session to a remote.
 ///
 /// `T` is the type of the underlying I/O resource.
 pub struct NoiseOutput<T> {
     io: T,
-    session: snow::Session,
+    session: SnowState,
     buffer: Buffer,
     read_state: ReadState,
     write_state: WriteState
@@ -76,9 +113,10 @@ impl<T> fmt::Debug for NoiseOutput<T> {
 }
 
 impl<T> NoiseOutput<T> {
-    fn new(io: T, session: snow::Session) -> Self {
+    fn new(io: T, session: SnowState) -> Self {
         NoiseOutput {
-            io, session,
+            io, 
+            session,
             buffer: Buffer { inner: Box::new([0; TOTAL_BUFFER_LEN]) },
             read_state: ReadState::Init,
             write_state: WriteState::Init

protocols/noise/src/io/handshake.rs

@@ -24,6 +24,7 @@ mod payload;
 
 use crate::error::NoiseError;
 use crate::protocol::{Protocol, PublicKey, KeypairIdentity};
+use crate::io::SnowState;
 use libp2p_core::identity;
 use futures::{future, Async, Future, future::FutureResult, Poll};
 use std::{mem, io};
@@ -128,7 +129,7 @@ where
     /// ```
     pub fn rt1_initiator(
         io: T,
-        session: Result<snow::Session, NoiseError>,
+        session: Result<snow::HandshakeState, NoiseError>,
         identity: KeypairIdentity,
         identity_x: IdentityExchange
     ) -> Handshake<T, C> {
@@ -157,7 +158,7 @@ where
     /// ```
     pub fn rt1_responder(
         io: T,
-        session: Result<snow::Session, NoiseError>,
+        session: Result<snow::HandshakeState, NoiseError>,
         identity: KeypairIdentity,
         identity_x: IdentityExchange,
     ) -> Handshake<T, C> {
@@ -188,7 +189,7 @@ where
     /// ```
     pub fn rt15_initiator(
         io: T,
-        session: Result<snow::Session, NoiseError>,
+        session: Result<snow::HandshakeState, NoiseError>,
         identity: KeypairIdentity,
         identity_x: IdentityExchange
     ) -> Handshake<T, C> {
@@ -220,7 +221,7 @@ where
     /// ```
     pub fn rt15_responder(
         io: T,
-        session: Result<snow::Session, NoiseError>,
+        session: Result<snow::HandshakeState, NoiseError>,
         identity: KeypairIdentity,
         identity_x: IdentityExchange
     ) -> Handshake<T, C> {
@@ -289,7 +290,7 @@ impl<T> State<T> {
     /// Noise handshake pattern.
     fn new(
         io: T,
-        session: Result<snow::Session, NoiseError>,
+        session: Result<snow::HandshakeState, NoiseError>,
         identity: KeypairIdentity,
         identity_x: IdentityExchange
     ) -> FutureResult<Self, NoiseError> {
@@ -302,7 +303,7 @@ impl<T> State<T> {
         future::result(session.map(|s|
             State {
                 identity,
-                io: NoiseOutput::new(io, s),
+                io: NoiseOutput::new(io, SnowState::Handshake(s)),
                 dh_remote_pubkey_sig: None,
                 id_remote_pubkey,
                 send_identity
@@ -340,7 +341,7 @@ impl<T> State<T>
                         }
                     }
                 };
-                future::ok((remote, NoiseOutput { session: s, .. self.io }))
+                future::ok((remote, NoiseOutput { session: SnowState::Transport(s), .. self.io }))
             }
         }
     }

protocols/noise/src/protocol.rs

@@ -24,7 +24,7 @@ pub mod x25519;
 
 use crate::NoiseError;
 use libp2p_core::identity;
-use rand::FromEntropy;
+use rand::SeedableRng;
 use zeroize::Zeroize;
 
 /// The parameters of a Noise protocol, consisting of a choice