From 08cb7b6ebb71fbb7ddd83cd304ecb089f1bd7918 Mon Sep 17 00:00:00 2001
From: jiangyuanshu <317787106@qq.com>
Date: Fri, 22 May 2020 19:43:15 +0800
Subject: [PATCH] revert beacon.rs to version
 a42ef24fc5cb279b7a182dd97d7a3f743ffe3211

---
 src/bin/beacon.rs | 31 ++-----------------------------
 1 file changed, 2 insertions(+), 29 deletions(-)

diff --git a/src/bin/beacon.rs b/src/bin/beacon.rs
index f35e02e..ada2a3d 100644
--- a/src/bin/beacon.rs
+++ b/src/bin/beacon.rs
@@ -7,8 +7,6 @@ extern crate byteorder;
 #[macro_use]
 extern crate hex_literal;
 
-extern crate crypto;
-
 use std::fs::File;
 use std::io::{BufWriter, BufReader};
 use blake2_rfc::blake2b::Blake2b;
@@ -34,34 +32,9 @@ fn main() {
         use byteorder::{ReadBytesExt, BigEndian};
         use rand::{SeedableRng};
         use rand::chacha::ChaChaRng;
-        use crypto::sha2::Sha256;
-        use crypto::digest::Digest;
 
-        // Place block hash here (block number #631600)
-        // choose block number BTC #631600 at 2020-05-21 15:00:00 UTC+8
-        // block #631600 generates at ?
-        // generate beacon successfully at ?
-        let mut beacon_value: [u8; 32] = hex!("00000000000000000008de28ff08672c5b85add6d51024b90fa9424dadc82691");
-
-        // Performs 2^n hash iterations over it
-        const N: usize = 32;
-
-        for i in 0..(1u64<<N) {
-            // Print 1024 of the interstitial states
-            // so that verification can be
-            // parallelized
-            if i % (1u64<<(N-10)) == 0 {
-                print!("{}: ", i);
-                for b in beacon_value.iter() {
-                    print!("{:02x}", b);
-                }
-                println!("");
-            }
-
-            let mut h = Sha256::new();
-            h.input(&beacon_value);
-            h.result(&mut beacon_value);
-        }
+        // Place beacon value here (2^42 SHA256 hash of Bitcoin block hash #534861)
+        let beacon_value: [u8; 32] = hex!("2bf41a959668e5b9b688e58d613b3dcc99ee159a880cf764ec67e6488d8b8af3");
 
         print!("Final result of beacon: ");
         for b in beacon_value.iter() {