idea - kaitai_struct for file format code

[clach04]

https://github.com/kaitai-io/kaitai_struct

Markor .jenc files maybe a good first try, static version byte size but variable other fields. Enum for version and "Typical TLV implementation (switching types on an expression)" in https://doc.kaitai.io/user_guide.html#valid-values should handle header with eof option for data.

• https://github.com/opensource21/jpencconverter/blob/f65b630ea190e597ff138d9c1ffa9409bb4d56f7/src/main/java/de/stanetz/jpencconverter/cryption/JavaPasswordbasedCryption.java#L21
• https://github.com/opensource21/jpencconverter/blob/f65b630ea190e597ff138d9c1ffa9409bb4d56f7/src/main/java/de/stanetz/jpencconverter/cryption/JavaPasswordbasedCryption.java#L229

.jenc encryption compatible with https://github.com/gsantner/markor https://gitlab.com/opensource21/jpencconverter V001("PBKDF2WithHmacSHA512", 10000, 256, "AES", 64, "AES/GCM/NoPadding", 32), mirror https://github.com/opensource21/jpencconverter format https://gitlab.com/opensource21/jpencconverter/-/blob/master/src/main/java/de/stanetz/jpencconverter/cryption/JavaPasswordbasedCryption.java

[clach04]

For now doing raw file-IO in experimental script https://github.com/clach04/jenc-py/blob/wip/jenc_reader.py