RSA Rust lib for key generation and encryption

[paulyoung]

Also, depending on your use case you might be able to use Threshold Key Derivation:

Threshold Key Derivation - Privacy on the IC

TL;DR We want to add privacy to the IC by enabling canisters to perform threshold key derivation Summary Empower dapps to perform encryption, threshold decryption, and signing on the IC by allowing canisters to call a threshold key derivation interface. This feature will enable canisters or individual users to encrypt messages under the public key of the subnet, so that they can be decrypted by calling the threshold key derivation interface for the corresponding decryption key that is secret-s…