Encryption Terminology

noun a small piece of shaped metal with incisions cut to fit the wards of a particular lock, which is inserted into a lock and turned to open or close it

verb to provide a lock with a key to operate it

adjective of crucial importance; central or essential

• The key to success is hard work and dedication.
• The key to acing the exam is studying the practice questions.
• The key to throwing a great party is having good vibes and good music.
• Communication is the key that unlocks the door to understanding in any relationship.