Switch to using nix.

players.rb

@@ -18,7 +18,7 @@ module Players
     raise ArgumentError, "Password must be at least 8 characters and of valid format." unless
       pass.match?(/\A[a-zA-Z0-9_.!?@#$%^&*()+=-]+\z/) && pass.length >= 8
 
-    digest = XXhash.xxh32(pass, ENV_HASH["SALT"])
+    digest = Zlib.crc32(pass, ENV_HASH["SALT"])
     code = ENV_HASH["ENV"] == "prod" ? Array.new(24) { ALPHANUM.sample }.join : "!"
 
     DB[
@@ -78,7 +78,7 @@ module Players
   end
 
   def self.authorized?(username, pass)
-    digest = XXhash.xxh32(pass, ENV_HASH["SALT"])
+    digest = Zlib.crc32(pass, ENV_HASH["SALT"])
     Logman.log "Authorized: #{username} & #{digest}"
     player = self[username]
     player && player[:digest].to_i == digest.to_i ? player : false