This lesson covers encryption.

Objectives and Skills

Objectives and skills for the encryption portion of Linux+ certification include:^[1]

• Securing data with encryption
  • Perform basic OpenSSH 2 client configuration and usage
  • Understand the role of OpenSSH 2 server host keys
  • Perform basic GnuPG configuration, usage and revocation
  • Understand SSH port tunnels (including X11 tunnels)
  • The following is a partial list of the used files, terms and utilities:
    • ssh
    • ssh-keygen
    • ssh-agent
    • ssh-add
    • ~/.ssh/id_rsa and id_rsa.pub
    • ~/.ssh/id_dsa and id_dsa.pub
    • /etc/ssh/ssh_host_rsa_key and ssh_host_rsa_key.pub
    • /etc/ssh/ssh_host_dsa_key and ssh_host_dsa_key.pub
    • ~/.ssh/authorized_keys
    • /etc/ssh_known_hosts
    • gpg
    • ~/.gnupg/*

Readings

Multimedia

Activities

Lesson Summary

Key Terms

References