Add pure Rust crypto crates for hashing/HMAC and encryption

[tinglou]

Cryptographic algorithms are provided by the selected backend:

• v3_openssl: openssl
• v3_rust: pure Rust crates Rust Crypto: (md-5, sha1, sha2, hmac, aes, des, etc.)

[divi255]

good day

thank you, it actually duplicates #20 but I will review and maybe make a combined one. the switch to rustls is planned in the nearest future

[tinglou]

good day

thank you, it actually duplicates #20 but I will review and maybe make a combined one. the switch to rustls is planned in the nearest future

Good morning!
Rustls is a bit heavy, the seperated crates are much more lightweight and are the most popular in their respective fields.

[tinglou]

maybe 3 backends are better:
v3_openssl: for FIPS-140
v3_rust: for pure rust
v3_aws_lc: FIPS-140

[macwilam]

My branch was (as I mentioned" more of a proof of concept. High chance that things can be done better / differently.
I am looking forward for this crate to be able to work without openssl.
Kind regards
Maciej

[zigazajc007]

Hello,

Any progress update?

Cross compiling openssl is a pain especially when you want to support musl, aarch... and compiling using Github Workflows.

All the libraries that I currently use support rustls:

• lettre
• reqwest
• tokio
• hyper
• redis
• tungstenite
• mysql_async
• tokio-postgres
• imap
• tiberius

smtp2 is the only one currently missing support.

[divi255]

Thanks for bumping it. I hope to reach my open source part of life after CyberScotland'2026 (in about 10 days)