How can I create a persistent RSA key pair using TSs. CPP and enable private key encryption even after software restart

[qingshu512]

Hi,All.
This is My Question：
How can I create a persistent RSA key pair using TSs. CPP and enable private key encryption even after software restart？

I Try to Using this api base on Samples Code:

RsaEncryptDecrypt(); -- >Encrypt Decrypt
PrimaryKeys()    ---> save PublicKeyInfo into Nv

But, I have not solution to fix my demands。
using exist PriKey encrpt data。

so, somebody help me?