<PackageReference Include="Azure.Storage.Blobs" Version="12.26.0" />

Azure.Storage.Cryptography.Models.EncryptedRegionInfo

Describes the structure of authenticated encrypted blocks of data in a content stream.
public int DataLength { get; set; }

Length of the ciphertext data in the region.

public int NonceLength { get; set; }

Length of the nonce found in the content stream.