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Quarkus demo: Amazon KMS Client

This example showcases how to use the AWS KMS client with Quarkus. As a prerequisite install Install AWS Command line interface.

AWS KMS local instance

Just run it as follows in order to start KMS locally: docker run --rm --name local-kms -p 8011:4599 -e SERVICES=kms -e START_WEB=0 -d localstack/localstack:0.11.1 KMS listens on localhost:8011 for REST endpoints.

Create an AWS profile for your local instance using AWS CLI:

$ aws configure --profile localstack
AWS Access Key ID [None]: test-key
AWS Secret Access Key [None]: test-secret
Default region name [None]: us-east-1
Default output format [None]:

Create KMS master key

Create a master key and store the ARN in the MASTER_KEY_ARN environment variable

$> MASTER_KEY_ARN=`aws kms create-key --profile localstack --endpoint-url=http://localhost:8011 | cut -f3`

Generate key data as 256-bit symmetric key (AES_256)

$> aws kms generate-data-key --key-id $MASTER_KEY_ARN --key-spec AES_256 --profile localstack --endpoint-url=http://localhost:8011

Run the demo on dev mode

  • Run ./mvnw clean package and then java -Dkey.arn=$MASTER_KEY_ARN -jar ./target/amazon-kms-quickstart-1.0-SNAPSHOT-runner.jar
  • In dev mode ./mvnw clean quarkus:dev -Dkey.arn=$MASTER_KEY_ARN

Encrypt your text

curl -XPOST -H"Content-type: text/plain" http://localhost:8080/sync/encrypt -d'Quarkus is awsome'

And the result similar to this output:

S2Fybjphd3M6a21zOnVzLWVhc3QtMTowMDAwMDAwMDAwMDA6a2V5LzZmYzAwOWZhLWYwMDUtNGI4My04ZDc1LTk4OGVhZTk4ZTM1NwAAAAAfC2HyHrHBXLNFomHLdH9PlMKWQKofyhJjbY2TUovEaBuc4Hj+Lb2BSoYTa/c=

Decrypt your message

You can now decrypt a message you previously encrypted

curl -XPOST -H"Content-type: text/plain" http://localhost:8080/sync/decrypt -d '<encrypted-message>'

Repeat the same using async endpoints. Encrypt

curl -XPOST -H"Content-type: text/plain" http://localhost:8080/async/encrypt -d 'Quarkus is awsome'

And then decrypt

curl -XPOST -H"Content-type: text/plain" http://localhost:8080/async/decrypt -d '<encrypted-message>'

Running in native

You can compile the application into a native binary using:

./mvnw clean install -Pnative

and run with:

./target/amazon-kms-quickstart-1.0-SNAPSHOT-runner -Dkey.arn=$MASTER_KEY_ARN

Running native in container

Build a native image in container by running: ./mvnw package -Pnative -Dnative-image.docker-build=true

Build a docker image: docker build -f src/main/docker/Dockerfile.native -t quarkus/amazon-kms-quickstart .

Create a network that connect your container with localstack docker network create localstack

Stop your localstack container you started at the beginning docker stop local-kms

Start localstack and connect to the network docker run --rm --network=localstack --name localstack -p 8011:4599 -e SERVICES=kms -e START_WEB=0 -d localstack/localstack:0.11.1

Create a master key and store the ARN in the CMK_ARN environment variable

$> MASTER_KEY_ARN=`aws kms create-key --profile localstack --endpoint-url=http://localhost:8011 | cut -f3`

Generate key data as 256-bit symmetric key (AES_256)

$> aws kms generate-data-key --key-id $MASTER_KEY_ARN --key-spec AES_256 --profile localstack --endpoint-url=http://localhost:8011

Run quickstart container connected to that network (note that we're using internal port of the localstack) docker run -i --rm --network=localstack -p 8080:8080 quarkus/amazon-kms-quickstart -Dquarkus.kms.endpoint-override=http://localstack:4599