Digital signature and encryption with OpenSSL and GnuPGLX-CRYPT

The course is available on demand.

Remote training: online live with a trainer and a group. Available on demand, at time and place convenient to you, for groups of at least 3 participants.

exempt from VAT

Price: 490 EUR

refreshments included

computer station included

first minute (30+ days before) - 3%

Digital signature and encryption with OpenSSL and GnuPG

Categories: Linux administration, Networking

A course for everyone who wants to understand and use modern cryptography tools for data protection. Participants learn how to: create, modify, import and export keys, encrypt, decrypt and sign emails and files, send their public key to a keyserver, revoke their public key, participate in a keysigning party.


1 day


  1. Encoding and encryption
  2. Symmetric and asymmetric cryptography
  3. Hash functions
  4. Digital signature principles
  5. Encryption and digital signature scope of use
  6. Introduction to OpenSSL and GnuPG
  7. X.509 and PKCS #11 standards
  8. Creating keys: key length, algorithm choice, key management: exporting, importing, revoking
  9. Digitally signing and encrypting documents using keys
  10. Keyservers: key validation, sending key to a keyserver
  11. Supporting applications
    • GNU Privacy Assistant
    • Seahorse
  12. GPG in email clients
    • signing and encrypting email
    • Outlook Express (GPGOE)
    • Mozilla (EnigMail)

Download as PDF

Audience and prerequisites

Participants are expected to have basic computer skills (Windows or Linux) and know how to use an email client (Outlook or Thunderbird).


Course participants receive completion certificates signed by ALX.

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