a very simple file encryption tool inspired by age and based on libsodium
generates a header of 41 + count · 80 bytes,
compared to age’s header of 102 + count · 110 bytes
(for a given count of recipients/public keys to encrypt to)
smol :3
nix shell github:42loco42/saltcrypt
# genkey prints pubkey on stderr
saltcrypt genkey >key0
# A1kAatau7vqmVFPtKsBgWv1tDZStEBQ2IUeXoXVm_zU
saltcrypt genkey >key1
# uN0ytWD0P8xjDvVIuZ4bhhTQN0-WDAqv4JdCZWJKLTU
# encrypt to a set of public keys ("recipients")
saltcrypt encrypt yourfile \
A1kAatau7vqmVFPtKsBgWv1tDZStEBQ2IUeXoXVm_zU \
uN0ytWD0P8xjDvVIuZ4bhhTQN0-WDAqv4JdCZWJKLTU \
>yourfile.enc
# decrypt tries the key with all recipients
# until it finds a matching one
saltcrypt decrypt yourfile.enc key0
saltcrypt decrypt yourfile.enc key1