/// <summary>
/// Update the request's ObjectMetadata with the necessary information for decrypting the object.
/// </summary>
/// <param name="request">
/// AmazonWebServiceRequest encrypted using the given instruction
/// </param>
/// <param name="instructions">
/// Non-null instruction used to encrypt the data in this AmazonWebServiceRequest .
/// </param>
/// <param name="encryptionClient">Encryption client used for put objects</param>
internal static void UpdateMetadataWithEncryptionInstructionsV2(AmazonWebServiceRequest request,
EncryptionInstructions instructions, AmazonS3EncryptionClientBase encryptionClient)
{
var keyBytesToStoreInMetadata = instructions.EncryptedEnvelopeKey;
var base64EncodedEnvelopeKey = Convert.ToBase64String(keyBytesToStoreInMetadata);
var ivToStoreInMetadata = instructions.InitializationVector;
var base64EncodedIv = Convert.ToBase64String(ivToStoreInMetadata);
MetadataCollection metadata = null;
var putObjectRequest = request as PutObjectRequest;
if (putObjectRequest != null)
{
metadata = putObjectRequest.Metadata;
}
var initiateMultipartrequest = request as InitiateMultipartUploadRequest;
if (initiateMultipartrequest != null)
{
metadata = initiateMultipartrequest.Metadata;
}
if (metadata != null)
{
metadata.Add(XAmzWrapAlg, instructions.WrapAlgorithm);
metadata.Add(XAmzTagLen, DefaultTagBitsLength.ToString());
metadata.Add(XAmzKeyV2, base64EncodedEnvelopeKey);
metadata.Add(XAmzCekAlg, instructions.CekAlgorithm);
metadata.Add(XAmzIV, base64EncodedIv);
metadata.Add(XAmzMatDesc, JsonMapper.ToJson(instructions.MaterialsDescription));
}
}
internal static PutObjectRequest CreateInstructionFileRequestV2(AmazonWebServiceRequest request, EncryptionInstructions instructions)
{
var keyBytesToStoreInInstructionFile = instructions.EncryptedEnvelopeKey;
var base64EncodedEnvelopeKey = Convert.ToBase64String(keyBytesToStoreInInstructionFile);
var ivToStoreInInstructionFile = instructions.InitializationVector;
var base64EncodedIv = Convert.ToBase64String(ivToStoreInInstructionFile);
var jsonData = new JsonData
{
[XAmzTagLen] = DefaultTagBitsLength.ToString(),
[XAmzKeyV2] = base64EncodedEnvelopeKey,
[XAmzCekAlg] = instructions.CekAlgorithm,
[XAmzWrapAlg] = instructions.WrapAlgorithm,
[XAmzIV] = base64EncodedIv,
[XAmzMatDesc] = JsonMapper.ToJson(instructions.MaterialsDescription)
};
var contentBody = jsonData.ToJson();
var putObjectRequest = request as PutObjectRequest;
if (putObjectRequest != null)
{
return(GetInstructionFileRequest(putObjectRequest.BucketName, putObjectRequest.Key, EncryptionInstructionFileV2Suffix, contentBody));
}
var completeMultiPartRequest = request as CompleteMultipartUploadRequest;
if (completeMultiPartRequest != null)
{
return(GetInstructionFileRequest(completeMultiPartRequest.BucketName, completeMultiPartRequest.Key, EncryptionInstructionFileV2Suffix, contentBody));
}
return(null);
}