Overview
What this challenge is about.
Implement Authenticated Encryption for a Document Service. Advanced challenge in code. Writing production code that solves real engineering problems, earn a ...
The Brief
What you'll do, and what you'll demonstrate.
Ship envelope-encryption with customer-managed keys for a 4TB document service, prove tamper resistance via AEAD, and produce an operational runbook.
This is not a coding exercise. It is the work a software engineer does between a Jira ticket and a merged PR. That distinction matters to every hiring manager who has seen candidates solve LeetCode problems and none who have shipped production code under real constraints.
When you finish, you will have something most graduates do not: a real-world deliverable, verified by Ewance, that you can show to a hiring manager and say "I did this. Here is the proof."
Earning criteria — what you'll demonstrate
- Design and ship envelope encryption with KMS-held KEKs
- Use AEAD correctly with Associated Data binding objects to their keys
- Implement key rotation without re-encrypting all underlying data
- Document encryption operations for a non-crypto SRE team
Program Fit
Where this fits in your program.
Sharpens the same skills your degree expects you to demonstrate.
Applied Cryptography
Master · Security
Strong alignment
This challenge maps to Applied Cryptography at the Master level. It sharpens the same practical skills your coursework expects — but in a real industry context with actual constraints and deliverables.
Skills
Skills you'll demonstrate.
Each one shows up on your verified credential.
- Applied Cryptography
Apply applied cryptography to solve real industry problems and demonstrate production-level capability.
- Aead
Apply aead to solve real industry problems and demonstrate production-level capability.
- Key Management
Apply key management to solve real industry problems and demonstrate production-level capability.
- Go
Apply go to solve real industry problems and demonstrate production-level capability.
- Aws
Deploy and manage infrastructure and services on Amazon Web Services.
- Documentation
Apply documentation to solve real industry problems and demonstrate production-level capability.
Careers
Career paths this challenge builds toward
Completing this challenge demonstrates skills that transfer directly to these roles: