screen locking

secure/unlock.lua

@@ -0,0 +1,34 @@
+-- add this file to the preload section of .startup.boot
+-- example:
+-- {
+--   preload = { 'packages/secure/unlock.lua' },
+--   ...
+
+package.path = '/sys/modules/?.lua;' .. package.path
+
+local Security = require('opus.security')
+local SHA      = require('opus.crypto.sha2')
+local Terminal = require('opus.terminal')
+
+local term = _G.term
+
+term.setCursorPos(1, 1)
+term.clear()
+
+repeat
+    local s, m = pcall(function()
+        local password = Terminal.readPassword('Enter password: ')
+
+        if not password then
+            error('Invalid password')
+        end
+
+        if Security.verifyPassword(SHA.compute(password or '')) then
+            return true
+        end
+        error('Invalid password')
+    end)
+    if not s and m then
+        _G.printError(m)
+    end
+until s