Async friendly Always Encrypted support #3672
Description
Always Encrypted types today don't support async APIs in base class as well as in implementations, leading to sync-over-async in Async workflows. This gap is important to fill for a true async workflow experience when executing commands where encryption/decryption is needed to be performed.
This will be covered in following tasks:
- Introduce Async API counterparts for AE base class #3673
- Implement async counterparts in all Key Store provider implementations:
- SqlColumnEncryptionCertificateStoreProvider
- SqlColumnEncryptionCngProvider
- SqlColumnEncryptionCspProvider
- SqlColumnEncryptionAzureKeyVaultProvider
- Define virtual async counterparts in base type 'SqlColumnEncryptionEnclaveProvider'
- Implement async counterparts in all Enclave provider implementations:
- NoneAttestationEnclaveProvider
- AzureAttestationEnclaveProvider
- VirtualizationBasedSecurityEnclaveProviderBase
- Implement Async API usage in Async code paths
- Testing and code coverage