Age decrypt tool written in C89

[maagenta]

Hey everyone,

I really like the philosophy of the age-v1 specification for file encryption, so I decided to write an encryption/decryption tool for it in C.

The project is available here: https://github.com/maagenta/age89

The goal of this project was to implement age encryption and decryption while strictly adhering to the C89 standard. This ensures it can be compiled on almost any system with a C compiler.

I used the format specification published at age-encryption.org/v1 as my primary reference throughout the implementation.

I’m open to contributions and issues!