Lab 9: File Encryption with GPG — CompTIA A+ Cyber Companion

0 / 7 tasks completed

📋 Tasks

1 Create a test file with sensitive data

echo 'CONFIDENTIAL: Server root password is S3cur3P@ss!' > secret.txt

2 Encrypt the file with symmetric encryption (AES-256)

gpg --symmetric --cipher-algo AES256 secret.txt

3 Verify the encrypted file was created

ls -la secret.txt*

4 Securely delete the original plaintext file

shred -vfz -n 3 secret.txt && rm secret.txt

5 Decrypt the file

gpg --decrypt secret.txt.gpg

6 Generate a GPG key pair for asymmetric encryption

gpg --gen-key

7 Export your public key for sharing

gpg --export --armor student@cyber-lab.local > public_key.asc

bash — cyber-lab

Welcome to Lab 9: File Encryption with GPG

Type commands below to complete each task. Type 'help' for available commands.

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student@cyber-lab:~$

💡 Complete task 1: Create a test file with sensitive data

When would you use symmetric vs. asymmetric encryption?