Add ephemeral encryptor factory.
Roslyn is about to remove declaration expressions.
Preliminary support for key management
(Still need to copy primary implementation from TFS project)
More key ring implementation.
Add logic to create new keys with deferred activation before older keys expire.
Copy the IKeyRingProvider-based IDataProtector from TFS
IDataProtector should implement IDataProtectionProvider
Add keyring based provider
Added file system-based XML reader.
Min digest length for PRF underlying HMAC is 128 bits.
First stab at key manager APIs (core logic not yet ported from TFS)
Add <key> parsing logic to the key manager
Add support for encrypting secret key material using DPAPI.
Add support for DPAPI:NG secret key encryptors
Refactor how ephemeral protection providers are created.
Rename: move XML encryption and repositories into their own namespaces
Move IAuthenticatedEncryptor and friends into its own namespace
Change default key refresh and roll times.
System.* assemblies should be in "frameworkAssemblies" instead of "dependencies"
Migrate CNG encryptors toward using the new IAuthenticatedEncryptorConfiguration model.