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PRISMA_FIELD_DECRYPTION_KEYS is never set, so the AES key cannot be rotated

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难度
3/5
预计耗时
1-2 天
新手友好度
57/100
Issue 类型
功能
描述清晰度
基本清楚
活跃度
活跃
技术栈
helm, typescript
领域
backend, security

调研方向

Start with .helm/ctrl/templates/backend/deployment.yaml and cron.yaml, where PRISMA_FIELD_ENCRYPTION_KEY is currently set; then check how the application and prisma-field-encryption read environment variables. Configure retired decryption keys through PRISMA_FIELD_DECRYPTION_KEYS while preserving the current key setup. Done when both deployments can load the retired keys needed for gradual rotation and restoring backups.

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描述

backend tech debt

We have no way to hold more than one encryption key at a time. PRISMA_FIELD_ENCRYPTION_KEY is set in .helm/ctrl/templates/backend/deployment.yaml and cron.yaml, and that single key is all the app ever sees.

prisma-field-encryption does support more. It takes a current encryption key plus a list of retired decryption keys via PRISMA_FIELD_DECRYPTION_KEYS, and every encrypted value already carries a fingerprint of the key that wrote it, so reads can pick the right one per row. We just never configure the list.

Two things depend on that:

  1. Rotation. Changing the key means decrypting everything under the old one and re-encrypting under the new one. With only one key loaded, there's no window where both are available, so it can't be done gradually.
  2. Old backups. A backup stays tied to whichever key was current when it was taken. Restoring one and reading the encrypted columns needs that key, whether or not we've rotated since.

So retired keys would need to outlive the backups that depend on them, and right now there's no mechanism to load them even if we kept them somewhere.

主要语言
TypeScript
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  4. 提交 Pull Request,并在描述里引用这个 Issue 编号。

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