Update password-generator.md

password-generator.md

@@ -1,11 +1,14 @@
 # Password Generator
 
-**Objective:** Create a password generator that can create a secure password.
+**Objective:** Create a password generator that can create a cryptographically secure password, 
+suitable for use in authentication systems.
 
 It should be possible to generate a password by calling a method—you may choose
 the method signature for this. The method should return a string containing the
 new password.
 
+## Requirements
+
 This generation method should accept the following options which define the
 requirements of returned passwords:
 
@@ -17,19 +20,24 @@ requirements of returned passwords:
 
 The function should produce an error in the event of invalid options.
 
-External libraries are allowed for testing purposes. The actual password
-generation code however should be implemented in your code, and not simply call
-out to an external library that generates passwords for you.
+## Constraints
+
+* Passwords should be generated in a way that ensures high entropy and unpredictability.
+* You may use any classes or modules available in the standard Ruby library.
+* External libraries/gems may be used for testing purposes only. The core password
+  generation logic must be your own implementation. Don't use them to generate passwords.
 
-The code should be packaged as a library/module which could be included into
-other libraries and applications.
+## Deliverables
 
-Tests should be included to verify that the code works as intended.
+* The code should be packaged as a library/module which could be included into
+  other libraries and applications.
+* Tests should be included to verify that the code works as intended.
+* Documentation should be included to demonstrate how to use the library. A well
+  written README is more than sufficient. Please add some notes about how you
+  approached the problem, and any difficulties or issues you encountered during
+  development.
 
-Documentation should be included to demonstrate how to use the library. A well
-written README is more than sufficient. Please add some notes about how you
-approached the problem, and any difficulties or issues you encountered during
-development.
+## Submission
 
 Push the library into a private repository on GitHub and invite 
 [@js1300](https://github.com/js1300) and [@jpswade](https://github.com/jpswade) with read access.