Blog-like notes

Publishing Keys in DNS

A quick presentation of the current DNS record types for the publication of cryptographic keys.

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Quelques statistiques d’utilisation de SMTP sur TLS

Combien de clients SMTP utilisent TLS pour se connecter à mon serveur?

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Using an offline GnuPG master key

How to keep a master GnuPG key offline, and how to use it when needed.

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Using GnuPG (2.1) for SSH authentication

How to replace the SSH agent by the GnuPG agent, and how to use an OpenPGP key pair to authenticate into a SSH server—updated note for GnuPG 2.1 “modern”.

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