p.crypt uses openssl which just started issuing this warning for the way it is called for doing the encryption.
λ p.crypt -i secrets.sh -o secrets.sh.crypt
enter aes-256-cbc encryption password:
Verifying - enter aes-256-cbc encryption password:
*** WARNING : deprecated key derivation used.
Using -iter or -pbkdf2 would be better.
p.crypt
uses openssl which just started issuing this warning for the way it is called for doing the encryption.