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A small study project on AWS encryption using AWS KMS, AWS Lambda and sbt-sam.
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A small study project on AWS KMS Encryption using AWS KMS, AWS Lambda and sbt-sam.


The example shows how to create 'structured data' and encrypt it with the SamSerializer. The record format is a SamRecord, an envelope that groups data with metadata like a schema tag/hit in the form of a schema fingerprint, the KMS CMK and the payload itself.

Key Policy

Key policies are the primary way to control access to customer master keys (CMKs) in AWS KMS. A key policy is a document to specify permissions. see:

The following key policy allows access to the cmk from all principals:

  "Version": "2012-10-17",
  "Id": "key-default-2",
  "Statement": [
      "Sid": "Enable IAM User Permissions",
      "Effect": "Allow",
      "Principal": {
        "AWS": "*"
      "Action": "kms:*",
      "Resource": "*"

Internet Access

When you enable VPC, your Lambda function will lose default internet access. If you require external internet access for your function, ensure that your security group allows outbound connections and that your VPC has a NAT gateway.


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