Public key
Course: AP® Cybersecurity Shows up in: Unit 5: Securing Applications and Data
The key in a pair that is published for anyone to use; senders encrypt with the receiver's public key.
Appears in the course and exam description (CED): 5.4.A.35.4.A.4
Why it matters in Unit 5
Sharing it is safe; that is its purpose.
Example
public.pem posted on a company website.
Learn it properly, with a checkpoint 5.4 Asymmetric Cryptography