110.3 Securing data with encryption

110.3 Securing data with encryption

Reference to LPI objectives

LPIC-1 version 5.0, Exam 102, Objective 110.3

Weight

4

Key knowledge areas

  • Perform basic OpenSSH 2 client configuration and usage.

  • Understand the role of OpenSSH 2 server host keys.

  • Perform basic GnuPG configuration, usage and revocation.

  • Use GPG to encrypt, decrypt, sign and verify files.

  • Understand SSH port tunnels (including X11 tunnels).

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

  • ~/.ssh/id_ecdsa and id_ecdsa.pub

  • ~/.ssh/id_ed25519 and id_ed25519.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

  • /etc/ssh/ssh_host_ecdsa_key and ssh_host_ecdsa_key.pub

  • /etc/ssh/ssh_host_ed25519_key and ssh_host_ed25519_key.pub

  • ~/.ssh/authorized_keys

  • ssh_known_hosts

  • gpg

  • gpg-agent

  • ~/.gnupg/

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