A solution to the questiond 60207104 on stack overflow.

S0-60207104

        static void Main(string[] args)
        {
            var prog = new Program();
            prog.MainAsync().Wait();
        }

        private async Task MainAsync()
        {
            var kmsClient = new AmazonKeyManagementServiceClient(RegionEndpoint.EUCentral1);

            var dataKeyRequest = new GenerateDataKeyPairRequest
            {
                KeyId = KeyId, 
                KeyPairSpec = DataKeyPairSpec.RSA_2048
            };

            var dataKeyPairResponse = await kmsClient.GenerateDataKeyPairAsync(dataKeyRequest);
            
            var privateKeyBytes = dataKeyPairResponse.PrivateKeyPlaintext.ToArray(); 
            var privateKey = Convert.ToBase64String(privateKeyBytes);
            
            var publicKeyBytes = dataKeyPairResponse.PublicKey.ToArray();
            var publicKey = Convert.ToBase64String(publicKeyBytes);
            
            Console.Write(privateKey);
            Console.Write(publicKey);

        }