Crypto related functionality. It is used for establishing trust between a client and server via certificate exchange and validation. It also used for encrypting / decrypting messages and signing messages.

Async OPC-UA Crypto

Part of async-opcua, a general purpose OPC-UA library in rust.

This defines common cryptographic tooling for the OPC-UA protocol using libraries from Rust Crypto.

Currently supported security policies:

• Basic256 (Deprecated)
• Basic128Rsa15 (Deprecated)
• Basic256Sha256 (Deprecated)
• Aes256Sha256RsaPss
• Aes128Sha256Oaep

There's also some general tooling for working with and generating X509 Certificates, as well as support for the legacy password encryption/decryption scheme in OPC-UA.

You are unlikely to want to use this library directly, but it is used in both the server and client parts async-opcua.