Want to contribute RSA signature

[Irene-123]

I'm a beginner & contribute around GitHub in small portions, I create algorithms, like ciphers in rust I tried a few in my repo.
I was hoping to contribute the RSA signature, as I noticed we don't have one, but I'm not sure if someone is already working on it, if yes, I can jump in to learn & start my journey here to contribute.

Thanks!

[tarcieri]

We actually implement RSA signatures in a separate repo: https://github.com/rustcrypto/rsa

However, if you're still interested in contributing an RSA signature implementation, we do have an open issue for the RSA PSS-R signature algorithm: RustCrypto/RSA#231