Stub out RNG when fuzzing

[rust-lightning] / src / ln / peer_channel_encryptor.rs

diff --git a/src/ln/peer_channel_encryptor.rs b/src/ln/peer_channel_encryptor.rs
index e22d8bd3574969cdee2ff1470a1207b5f4607480..a20e77a17f3a7989053de518236245a20df629fd 100644 (file)
--- a/src/ln/peer_channel_encryptor.rs
+++ b/src/ln/peer_channel_encryptor.rs
@@ -5,8 +5,6 @@ use secp256k1::Secp256k1;
 use secp256k1::key::{PublicKey,SecretKey};
 use secp256k1::ecdh::SharedSecret;
 
-use rand::{thread_rng,Rng};
-
 use crypto::digest::Digest;
 use crypto::hkdf::{hkdf_extract,hkdf_expand};
 use crypto::sha2::Sha256;
@@ -14,7 +12,7 @@ use crypto::sha2::Sha256;
 use crypto::aead::{AeadEncryptor, AeadDecryptor};
 
 use util::chacha20poly1305rfc::ChaCha20Poly1305RFC;
-use util::byte_utils;
+use util::{byte_utils,rng};
 
 // Sha256("Noise_XK_secp256k1_ChaChaPoly_SHA256")
 const NOISE_CK: [u8; 32] = [0x26, 0x40, 0xf5, 0x2e, 0xeb, 0xcd, 0x9e, 0x88, 0x29, 0x58, 0x95, 0x1c, 0x79, 0x42, 0x50, 0xee, 0xdb, 0x28, 0x00, 0x2c, 0x05, 0xd7, 0xdc, 0x2e, 0xa0, 0xf1, 0x95, 0x40, 0x60, 0x42, 0xca, 0xf1];
@@ -75,9 +73,8 @@ pub struct PeerChannelEncryptor {
 
 impl PeerChannelEncryptor {
        pub fn new_outbound(their_node_id: PublicKey) -> PeerChannelEncryptor {
-               let mut rng = thread_rng();
                let mut key = [0u8; 32];
-               rng.fill_bytes(&mut key);
+               rng::fill_bytes(&mut key);
 
                let secp_ctx = Secp256k1::new();
                let sec_key = SecretKey::from_slice(&secp_ctx, &key).unwrap(); //TODO: nicer rng-is-bad error message
@@ -275,9 +272,8 @@ impl PeerChannelEncryptor {
        pub fn process_act_one_with_key(&mut self, act_one: &[u8], our_node_secret: &SecretKey) -> Result<[u8; 50], HandleError> {
                assert_eq!(act_one.len(), 50);
 
-               let mut rng = thread_rng();
                let mut key = [0u8; 32];
-               rng.fill_bytes(&mut key);
+               rng::fill_bytes(&mut key);
                let our_ephemeral_key = SecretKey::from_slice(&self.secp_ctx, &key).unwrap(); //TODO: nicer rng-is-bad error message
                self.process_act_one_with_ephemeral_key(act_one, our_node_secret, our_ephemeral_key)
        }