Re: [tor-dev] ed25519_master_id_public_key -> ed25519 id

On Sun, Oct 10, 2021 at 8:44 AM nusenu nusenu-lists@riseup.net wrote:

Hi,

given a relay's ed25519_master_id_public_key file, is there a simple way to generate the 43 chars long ed25519 identity string (also found in fingerprint-ed25519)?

Yes, there is!

First you verify that the file is really 64 bytes long, and that the first 32 bytes of the file are really "== ed25519v1-public: type0 ==\0\0\0".

Having done that, you base64-encode the second 32 bytes of the file, with no "=" padding.

I've attached a lazy little python script.

cheers,