MissingAuthenticationTokenException with Java KMS encryption

[anilkumar763]

I'm trying to put encrypted data into S3, as per the example suggested in ,http://docs.aws.amazon.com/AmazonS3/latest/dev/client-side-using-kms-java.html

I removed ProfileCredentialsProvider as an arugment to AmazonS3EncryptionClient as we are going with I AM Role based crednetials.

Facing this excepion at the line at

		encryptionClient.putObject(
				new PutObjectRequest(bucketName, objectKey, new ByteArrayInputStream(plaintext), new ObjectMetadata()));

	```

String objectKey = "ExampleKMSEncryptedObject";
String kms_cmk_id = "arn:aws:kms:******************************************************";

	KMSEncryptionMaterialsProvider materialProvider = new KMSEncryptionMaterialsProvider(kms_cmk_id);
	AmazonS3EncryptionClient encryptionClient;

	encryptionClient = new AmazonS3EncryptionClient(materialProvider,new CryptoConfiguration().withKmsRegion(Regions.US_WEST_1))
					.withRegion(Region.getRegion(Regions.US_WEST_1));

	// Upload object using the encryption client.
	byte[] plaintext = "Hello World, S3 Client-side Encryption Using Asymmetric Master Key!".getBytes();
	System.out.println("plaintext's length: " + plaintext.length);
	encryptionClient.putObject(
			new PutObjectRequest(bucketName, objectKey, new ByteArrayInputStream(plaintext), new ObjectMetadata()));

	// Download the object.
	S3Object downloadedObject = encryptionClient.getObject(bucketName, objectKey);
	byte[] decrypted = IOUtils.toByteArray(downloadedObject.getObjectContent());

com.amazonaws.services.kms.model.AWSKMSException: Missing Authentication Token (Service: AWSKMS; Status Code: 400; Error Code: MissingAuthenticationTokenException; Request ID: 2ccee8e2-78e9-11e7-b8fd-cd59b619a526)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1586) ~[aws-java-sdk-core-1.11.75.jar:?]
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1254) ~[aws-java-sdk-core-1.11.75.jar:?]
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1035) ~[aws-java-sdk-core-1.11.75.jar:?]
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:747) ~[aws-java-sdk-core-1.11.75.jar:?]
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:721) ~[aws-java-sdk-core-1.11.75.jar:?]
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:704) ~[aws-java-sdk-core-1.11.75.jar:?]
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:672) ~[aws-java-sdk-core-1.11.75.jar:?]
	at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:654) ~[aws-java-sdk-core-1.11.75.jar:?]
	at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:518) ~[aws-java-sdk-core-1.11.75.jar:?]
	at com.amazonaws.services.kms.AWSKMSClient.doInvoke(AWSKMSClient.java:2607) ~[aws-java-sdk-kms-1.11.76.jar:?]
	at com.amazonaws.services.kms.AWSKMSClient.invoke(AWSKMSClient.java:2583) ~[aws-java-sdk-kms-1.11.76.jar:?]
	at com.amazonaws.services.kms.AWSKMSClient.generateDataKey(AWSKMSClient.java:1378) ~[aws-java-sdk-kms-1.11.76.jar:?]
	at com.amazonaws.services.s3.internal.crypto.S3CryptoModuleBase.buildContentCryptoMaterial(S3CryptoModuleBase.java:539) ~[aws-java-sdk-s3-1.11.76.jar:?]
	at com.amazonaws.services.s3.internal.crypto.S3CryptoModuleBase.newContentCryptoMaterial(S3CryptoModuleBase.java:490) ~[aws-java-sdk-s3-1.11.76.jar:?]
	at com.amazonaws.services.s3.internal.crypto.S3CryptoModuleBase.createContentCryptoMaterial(S3CryptoModuleBase.java:456) ~[aws-java-sdk-s3-1.11.76.jar:?]
	at com.amazonaws.services.s3.internal.crypto.S3CryptoModuleBase.putObjectUsingMetadata(S3CryptoModuleBase.java:165) ~[aws-java-sdk-s3-1.11.76.jar:?]
	at com.amazonaws.services.s3.internal.crypto.S3CryptoModuleBase.putObjectSecurely(S3CryptoModuleBase.java:161) ~[aws-java-sdk-s3-1.11.76.jar:?]
	at com.amazonaws.services.s3.internal.crypto.CryptoModuleDispatcher.putObjectSecurely(CryptoModuleDispatcher.java:108) ~[aws-java-sdk-s3-1.11.76.jar:?]