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Demonstration: Securing an email with OpenPGP

This demonstration presents the basics of securing emails with OpenPGP:

• encrypting a message to ensure its confidentiality,
• decrypting a received email,
• signing a message to prove its authenticity,
• verifying an email signature.

The demonstration is performed using

Evolution and GnuPG for key management.

OpenPGP-compatible email clients

• Evolution : Linux/Unix computers.
• Thunderbird : Linux/Unix, Windows, macOS, Android, and iOS.
• K-9 Mail : Android smartphones.

Use cases

• Evolution / Thunderbird + GnuPG: personal or professional use on a computer, with full functionality.
• K-9 Mail / Thunderbird + OpenKeychain: secure mobile use, ideal when traveling.

Conclusion

Evolution, Thunderbird, and K-9 Mail are email applications that offer reliable OpenPGP support to secure your emails.

Depending on the platform used, these applications use GnuPG or OpenKeychain to encrypt, decrypt, sign, and verify messages, ensuring the confidentiality and authenticity of exchanges.