From bb84619a9af50379c88bc58fbb96c203892bee4a Mon Sep 17 00:00:00 2001
From: SI <si@local>
Date: Sun, 20 Aug 2023 01:16:36 +0000
Subject: [PATCH] allow the password to be choosable

---
 cryptoctf.sol | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/cryptoctf.sol b/cryptoctf.sol
index 00f4717..479d5d5 100644
--- a/cryptoctf.sol
+++ b/cryptoctf.sol
@@ -47,6 +47,7 @@ contract CryptoCTF10 {
     bool submissionsOpen;
     mapping (address => mapping (uint => bool)) solves; // address -> challengeID -> solved/not
     mapping (uint => bool) anySolves; // challengeID -> solved/not
+    string password;
   }
 
   mapping (uint => Contest) public contests;
@@ -54,10 +55,11 @@ contract CryptoCTF10 {
   event ChallengeAddedOrUpdated(uint contestID, uint indexed challengeID);
   event ChallengeSolved(uint contestID, uint indexed challengeID, address indexed solver);
 
-  function createContest(uint contestID) external {
+  function createContest(uint contestID, string memory password) external {
     require(contests[contestID].admin == address(0), "This contest ID has already been registered");
     contests[contestID].admin = msg.sender;
     contests[contestID].submissionsOpen = false;
+    contests[contestID].password = password;
   }
 
   function setAdmin(uint contestID, address newAdmin) external onlyExistingContest(contestID) onlyAdmin(contestID) {
@@ -77,7 +79,7 @@ contract CryptoCTF10 {
 
   function register(uint contestID, string memory password) external onlyExistingContest(contestID) {
     require(contests[contestID].players[msg.sender].status == PlayerStatus.Unverified, "You are already registered or banned in this contest");
-    require(keccak256(abi.encodePacked("I_read_it")) == keccak256(abi.encodePacked(password)));
+    require(keccak256(abi.encodePacked(password)) == keccak256(abi.encodePacked(contests[contestID].password)), "Wrong password");
     contests[contestID].players[msg.sender].status = PlayerStatus.Verified;
   }