About FlowCrypt Attester (PGP Public Key Server)

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A crucial part of encryption is the distribution of so-called public keys. As a FlowCrypt user, you usually don’t have to worry about this, since everything happens automatically for you. This infrastructure (and similar systems) is the backbone of why FlowCrypt works as seamlessly as it does.

Every time you want to send an encrypted message to someone new, Attester will tell FlowCrypt exactly how to encrypt messages for that person.

When this happens, in addition to Attester’s own verified records, it will search public keys on:

  • Public key servers such as pgp.mit.edu and similar.
  • The PGP Global Directory at keyserver.pgp.com.
  • The Mailvelope key server at keys.mailvelope.com.
  • The keybase.io key server.
  • The Proton Keyserver to automatically receive the public keys of Proton users.
  • The LDAP key server on the domain of the recipient (if any).

This makes our Attester the most complete PGP public key database that we know of.

Additionally, FlowCrypt Attester is compatible with other software. Enigmail, GPG, Mailvelope, or other users can add attester.flowcrypt.com as a keyserver in their settings. This will allow them to easily retrieve the public keys of FlowCrypt users and everyone else.