From d71030183372d0f3a3110da6f80d6e444d224242 Mon Sep 17 00:00:00 2001
From: Ignotus Peverell <igno.peverell@protonmail.com>
Date: Thu, 10 Nov 2016 16:02:47 -0800
Subject: [PATCH] Missing consensus file.

---
 core/src/consensus.rs | 48 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 core/src/consensus.rs

diff --git a/core/src/consensus.rs b/core/src/consensus.rs
new file mode 100644
index 000000000..cb21b2834
--- /dev/null
+++ b/core/src/consensus.rs
@@ -0,0 +1,48 @@
+// Copyright 2016 The Grin Developers
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//! All the rules required for a cryptocurrency to have reach consensus across
+//! the whole network are complex and hard to completely isolate. Some can be
+//! simple parameters (like block reward), others complex algorithms (like
+//! Merkle sum trees or reorg rules). However, as long as they're simple
+//! emough, consensus-relevant constants and short functions should be kept
+//! here.
+
+/// The block subsidy amount
+pub const REWARD: u64 = 1_000_000_000;
+
+/// Block interval, in seconds
+pub const BLOCK_TIME_SEC: u8 = 15;
+
+/// Cuckoo-cycle proof size (cycle length)
+pub const PROOFSIZE: usize = 42;
+
+/// Default Cuckoo Cycle size shift used is 28. We may decide to increase it.
+/// when difficuty increases.
+pub const SIZESHIFT: u32 = 28;
+
+/// Default Cuckoo Cycle easiness, high enough to have good likeliness to find
+/// a solution.
+pub const EASINESS: u32 = 50;
+
+/// Max target hash, lowest difficulty
+pub const MAX_TARGET: [u32; PROOFSIZE] =
+	[0xfff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
+	 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
+	 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
+	 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff];
+
+/// The maximum number of inputs or outputs a transaction may have
+/// and be deserializable. Only for DoS protection.
+pub const MAX_IN_OUT_LEN: u64 = 50000;