/// <summary>
/// Applies client-side encryption to the data for upload.
/// </summary>
/// <param name="content">
/// Content to encrypt.
/// </param>
/// <param name="metadata">
/// Metadata to add encryption metadata to.
/// </param>
/// <param name="async">
/// Whether to perform this operation asynchronously.
/// </param>
/// <param name="cancellationToken">
/// Cancellation token.
/// </param>
/// <returns>Transformed content stream and metadata.</returns>
public async Task <(Stream NonSeekableCiphertext, Metadata Metadata)> ClientSideEncryptInternal(
Stream content,
Metadata metadata,
bool async,
CancellationToken cancellationToken)
{
(Stream NonSeekableCiphertext, EncryptionData EncryptionData) = await _encryptor.EncryptInternal(
content,
async,
cancellationToken).ConfigureAwait(false);
Metadata modifiedMetadata = TransformMetadata(metadata, EncryptionData);
return(NonSeekableCiphertext, modifiedMetadata);
}
/// <summary>
/// Applies client-side encryption to the data for upload.
/// </summary>
/// <param name="content">
/// Content to encrypt.
/// </param>
/// <param name="metadata">
/// Metadata to add encryption metadata to.
/// </param>
/// <param name="async">
/// Whether to perform this operation asynchronously.
/// </param>
/// <param name="cancellationToken">
/// Cancellation token.
/// </param>
/// <returns>Transformed content stream and metadata.</returns>
public async Task <(Stream, Metadata)> ClientSideEncryptInternal(
Stream content,
Metadata metadata,
bool async,
CancellationToken cancellationToken)
{
(Stream nonSeekableCiphertext, EncryptionData encryptionData) = await _encryptor.EncryptInternal(
content,
async,
cancellationToken).ConfigureAwait(false);
metadata ??= new Dictionary <string, string>(StringComparer.OrdinalIgnoreCase);
metadata[Constants.ClientSideEncryption.EncryptionDataKey] = EncryptionDataSerializer.Serialize(encryptionData);
return(nonSeekableCiphertext, metadata);
}