Alice encrypts her data using her public key PK and stores the encrypted data in the cloud. Which of the following attack scenarios will compromise the privacy of her data?
- Hacker Harry breaks into the cloud server and steals the encrypted data
- Alice also stores her private key in the cloud, and Harry breaks into the cloud server as before
- Agent Andrew subpoenas Alice, forcing her to reveal her private key. However, the cloud server successfully resists to access the stored data
- None of these scenarios compromise the privacy of Alice's data