Amazon.S3.Encryption.EncryptionUtils.CreateInstructionFileRequest C# (CSharp) Méthode

        internal static PutObjectRequest CreateInstructionFileRequest(AmazonWebServiceRequest request, EncryptionInstructions instructions)
        {
            byte[] keyBytesToStoreInInstructionFile = instructions.EncryptedEnvelopeKey;
            string base64EncodedEnvelopeKey = Convert.ToBase64String(keyBytesToStoreInInstructionFile);

            byte[] IVToStoreInInstructionFile = instructions.InitializationVector;
            string base64EncodedIV = Convert.ToBase64String(IVToStoreInInstructionFile);

            JsonData jsonData = new JsonData();
            jsonData["EncryptedEnvelopeKey"] = base64EncodedEnvelopeKey;
            jsonData["IV"] = base64EncodedIV;

            string credentials = jsonData.ToJson();

            var putObjectRequest = request as PutObjectRequest;
            if (putObjectRequest != null)
            {
                PutObjectRequest requestforInstructionFile = new PutObjectRequest()
                {
                    BucketName = putObjectRequest.BucketName,
                    Key = putObjectRequest.Key + instructionfileSuffix,
                    ContentBody = credentials
                };
                requestforInstructionFile.Metadata.Add(instructionFileInfo, "");
                return requestforInstructionFile;
            }

            var completeMultiPartRequest = request as CompleteMultipartUploadRequest;
            if (completeMultiPartRequest != null)
            {
                PutObjectRequest requestforInstructionFile = new PutObjectRequest()
                {
                    BucketName = completeMultiPartRequest.BucketName,
                    Key = completeMultiPartRequest.Key + instructionfileSuffix,
                    ContentBody = credentials
                };
                requestforInstructionFile.Metadata.Add(instructionFileInfo, "");
                return requestforInstructionFile;
            }

            else
                return null;
        }

        /// <summary>
        /// Updates the request where the instruction file contains encryption information
        /// and the input stream contains the encrypted object contents.
        /// </summary>
        /// <param name="putObjectRequest"></param>
        private void GenerateEncryptedObjectRequestUsingInstructionFile(PutObjectRequest putObjectRequest)
        {
            // Create instruction
            EncryptionInstructions instructions = EncryptionUtils.GenerateInstructions(this.encryptionMaterials);

            EncryptionUtils.AddUnencryptedContentLengthToMetadata(putObjectRequest);

            // Encrypt the object data with the instruction
            putObjectRequest.InputStream = EncryptionUtils.EncryptRequestUsingInstruction(putObjectRequest.InputStream, instructions);

            // Create request for uploading instruction file
            PutObjectRequest instructionFileRequest = EncryptionUtils.CreateInstructionFileRequest(putObjectRequest, instructions);

            S3ClientForInstructionFile.PutObject(instructionFileRequest);
        }