implementing-envelope-encryption-with-aws-kms

# Implementing Envelope Encryption with AWS KMS ## Overview Envelope encryption is a strategy where data is encrypted with a data encryption key (DEK), and the DEK itself is encrypted with a master key (KEK) managed by AWS KMS. This approach allows encrypting large volumes of data locally while keeping the master key secure in a hardware security module (HSM) managed by AWS. This skill covers implementing envelope encryption using AWS KMS GenerateDataKey API. ## When to Use - When deploying or configuring implementing envelope encryption with aws kms capabilities in your environment - When establishing security controls aligned to compliance requirements - When building or improving security architecture for this domain - When conducting security assessments that require this implementation ## Prerequisites - Familiarity with cryptography concepts and tools - Access to a test or lab environment for safe execution - Python 3.8+ with required dependencies installed - Appropriate authorization for any testing activities ## Objectives - Understand the envelope encryption pattern and its advantages - Generate data encryption keys using AWS KMS GenerateDataKey - Encrypt/decrypt data locally using DEKs - Store encrypted DEK alongside ciphertext - Implement key caching to reduce KMS API calls - Handle key rotation with automatic re-encryption - Implement multi-region encryption for disaster recovery ## Key Concepts ### Envelope Encryption Flow 1. Call `kms:GenerateDataKey...