MS SQL EKM Provider Testing

Question

I am writing an EKM Provider, and am looking for test cases that will generate 100% SqlCryptXXX entrypoint coverage. I have most of the entrypoints covered, but the entrypoints I do not know how to provoke via SQL are:

• SqlCryptGetNextKeyId
• SqlCryptGetKeyInfoByKeyId
• SqlCryptGetKeyInfoByName

All others are fairly easily exercised. Can anyone point me at an explanation of what SQL operations cause the above to be called?

Thanks in advance!