-Files produced by the bkgpslog script are encrypted against a set of
-public keys using [[https://github.com/FiloSottile/age][~age~]], a simple command line encryption tool
-selected over ~gpg~ because of ~age~'s deliberate lack of
-configurability.
-
-The public keys are bech32 strings supplied as options to bkgpslog
-when called. The secret key should *NOT* be stored in Ninfacyzga-01.
-
-If a key pair was generated using ~age-keygen~, then it is an [[https://en.wikipedia.org/wiki/Curve25519][~X25519~]]
-key pair. See the [[https://age-encryption.org/v1][~age~ Version 1 specification]].
-
-An ~ssh-rsa~ or ~ssh-ed25519~ SSH public key string may be used instead of
-the bech32 public key string produced by ~age-keygen~ for convenience.
-
-Help information for ~age~ is available by running ~$ age --help~.
-***** Encryption Commands
-****** Encryption through ~age~
-In order to illustrate how ~bklog~ encrypts files, below is an example
-command illustrating how ~age~ may be used to encrypt a file.
-
-#+BEGIN_EXAMPLE
-$ echo "asdf" | age -r \
-age1kza7pfshy7xwygf9349zgmk7x53mquvedgw9r98qwyyqhssh830qqjzlsw \
-> "$HOME/secret_file"
-#+END_EXAMPLE
-
-The resulting ~secret-file~ is a binary blob with a plaintext header
-indicating how the blob was encrypted (which version of age was used,
-which public key was used).
-
-****** Encryption through ~bklog~
-~bklog~ may instructed to encrypt files via the ~-e~ and ~-r [pubkey
-string]~ options. An example is shown below:
-
-#+BEGIN_EXAMPLE
-$ gpspipe -r | bklog -e \
--r age1kza7pfshy7xwygf9349zgmk7x53mquvedgw9r98qwyyqhssh830qqjzlsw \
--r age1ce3pvzrqfcn2pc6zqzglc8ac8yjk3fzukpy08cesqjjwns53xywqmaq7xw \
--r age1pu5usxm743sx7rf22985xv2f4s0luzv6r6yx4fa7p8c2zyvp9fvqus2xr5 \
--o "$HOME/Location"
-#+END_EXAMPLE
-
-~bklog~ may be instructed via the ~-e~ and ~-R~ options to watch a
-directory in order to locate public key strings in its files. ~bklog~
-reads the first line of each file and interprets it as a public key
-string.
-
-In this example, the strings beginning with ~age1...~ are
-bech32-formatted public key strings. Please see the [[*Key Generation][Key Generation]]
-section for an explanation.
-
-Since ~age~ also accepts ~ssh~ public key strings, these may also be
-used if they are of the following form (no comment).
-
-: ssh-rsa AAAAB3NzaC1yc2EAAAADAQABA…AACAQDLnJbPs7CjwPT+OxXd
-
-***** Decryption Commands
-Files may be decrypted using a command similar to:
-
-#+BEGIN_EXAMPLE
-cat location.gpx.age | age -d -i key.txt > location.gpx
-#+END_EXAMPLE
-
-The version of ~age~ used to perform the encryption
projects / EVA-2020-02.git / blobdiff