Add Kryptor, age, and Minisign

[samuel-lucas6]

Kryptor

Kryptor is my free and open source, portable, and cross-platform command line file encryption program. It's well documented, secure by default, uses modern cryptographic algorithms, and aims to be a mixture of age and Minisign in terms of functionality to provide a simple alternative to GPG.

Whilst it hasn't been audited, it has been peer reviewed, and I would argue that if you're excluding programs on the basis of not being audited, then things like Cryptomator shouldn't be listed either. Note that age and Minisign haven't been audited as well.

age

age is a simple, modern, and secure file encryption tool, format, and Go library. It's become the popular alternative to GPG for encryption, but it doesn't support digital signatures. There's also a Rust implementation called rage.

Minisign

Minisign is a dead simple tool to sign files and verify digital signatures. Again, this is another popular alternative to GPG but only for signing, not encryption. There are implementations across a wide range of programming languages.