RustCrypto VS pbrt-v3

I would say a toy (or personal-use-only) password manager is a relatively simple project. If we are to forget about the GUI parts, you need to determine serialization of your password database (bincode + serde should be enough) and how to encrypt it. For the latter you need only two algorithms: a password hash for deriving encryption key from password and optional salt (the latter is usually randomly generated and stored as a "key file"), and an AEAD algorithm for encrypting and decrypting serialized database. There are certain pitfalls with encryption (e.g. you should not reuse nonce with the same key, especially with modes like GCM) and with properly erasing sensitive data from memory, as well as preventing it from leaking to things like swap, but learning about those is part of the learning experience.

FYI: the rust-crypto crate is unmaintained. Take a look at https://github.com/RustCrypto/AEADs instead

For AEAD with AES, you may want to use RustCrypto (https://github.com/RustCrypto/AEADs.git) instead

Dexios is a secure command-line encryption tool, that uses audited crates provided by the RustCrypto Team.

This is in relation to RustCrypto/AEADs#421 - myself and another user are having the exact same issue.

I choose an AEDS crate from the RustCrypto group: AES-GCM in its SIV variant (the SIV variant isn't really needed but it doesn't cost much).

Use RustCrypto's aes with one of its block modes (https://docs.rs/block-modes/latest/block_modes/) or AEAD algorithms (https://github.com/RustCrypto/AEADs). There's a lot of modular stuff in RustCrypto, just need to browse a little 😉.

crypto_secretbox: https://github.com/RustCrypto/AEADs/tree/master/xsalsa20poly1305

I'd recommend https://github.com/RustCrypto/AEADs. RustCrypto's crates are high quality, widely used and some have even been audited. Unfortunately they don't provide a read/write interface.

Physically Based Rendering[0] was an excellent textbook when I read it ages ago and conveniently enough it looks to have been updated with a new edition last year.

[0]: https://pbrt.org/

Physically Based Raytracing

Both of these books are free, and both are written in C++, but they can be done in any language. The first book, a raytracer in a weekend, is part of a series, you can find it here: https://raytracing.github.io/ And, if you get to the third book in that series, or you need a reference book, the PBRT book covers the math in more depth and discusses the latest theory, you can get the last edition of the book (5 years out of date) for free though: https://pbrt.org/

Making a “complete” one is a never-ending rabbit hole you can spend a lifetime on and is a very active area of research covering more advanced geometry, probability, optics, machine learning etc etc. A great introduction to that is https://pbrt.org

This isn't the highest priority but if you haven't already, learn how computer graphics works. Get a working knowledge of the camera matrix, real time graphics (say, OpenGL but threeJS is an option), and photorealistic graphics. PBRT is the go-to for photorealistic graphics. The first two books of Foundations of Game Engine Development are way more useful than they have any right to be (and my favorite textbooks I've ever read, 10/10).

Org-mode strength though is in working with different languages in a same source file, which I am not sure if Knuths version does. Anyway, to see how the original idea looks like, check the Wikipedia article, or to see it in real-life see some of books that are written in the literate style, like Physically Based Rendering, which seems to be available for free nowadays or C Interfaces and Implementations.

I contributed a tiny bit to pbrt[1], and one of the things I loved was that if you just plugged in physical values you almost always got great results with minimal tweaking.

The Octane data seems most complete at first glance (with complex IOR etc), but for things like milk and blood I expected at the very least some absorption coefficient for the translucency or similar.

[1]: https://pbrt.org/