sigcheck: pubkey fetching actually working

Signed-off-by: William Casarin <jb55@jb55.com>

fetch signatures

initial sigcache logic

gather keyids

update gitignore

sigcheck: remove old stuff

errs: record depth

remove remaining wolfsocks references

rename to chibipub

ap_json: prepare sigbuf for the sigchecker

Let's build the sigbuf before saving to activities.json

Signed-off-by: William Casarin <jb55@jb55.com>

add build_sigbuf helper

we might want to do this when writing activities instead

Signed-off-by: William Casarin <jb55@jb55.com>

build sigbuf from headers

initial sigcheck code

Signed-off-by: William Casarin <jb55@jb55.com>

quick digest sanity check

calculate body digest

Signed-off-by: William Casarin <jb55@jb55.com>

cleanups

ap_json: cleanup a bit

Signed-off-by: William Casarin <jb55@jb55.com>

save headers, signature in json message

Signed-off-by: William Casarin <jb55@jb55.com>

restrict AP message size

dynamic hostname

blake3