Vendor's SKF Implementation

This folder can be used to hold vendors' SKF libraries (.so) and header files. For testing the GmSSL SKF ENGINE, a dummy SKF implementation is also provided. This dummy implementation will always success with SAR_OK returned. If there is a HANDLE need to be initialized, it will be pointed to a new alloced memory. The application need to call SKF_CloseHandle to free this small piece memory. If a ULONG length need to be returned such as the ciphertext size in the SKF_Encrypt, this value will be assigned a non-zero integer value. Some of these values might be correct, but dont check them :) Normally dummy will do nothing to the output buffer, so the result will be incorrect, and will not check NULL pointers.