Hello,
In the OPCUA specification we should use an Asymmetric encryption (in my case RSA 256 oaep) to encrypt the “OpenSecureChannel request” and “OpenSecureChannel response”.
My OpenSecureChannel request/response size = 2000 octets
RSA Algorithm support bloc size of ~217 octets or something like that (RSA blocSize = RSA_Size(key) – paddingSize)

How should i do to encrypt my request and my response ???
Should i use an operation mode (CBC for example) to split my plainText into a small blocs ?? Am i respecting the specification by doing that

please, even if you don’t know the answer, any idea can be helpful !!
Thank you