# Key management: plan retirement before rotation

https://thiago.limaesilvatecnologia.com.br/en/artigos/key-retirement/

Published: 2026-09-12

Changing the active key does not end historical dependencies.

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Reading-path month: April 2026

Collection published on September 12, 2026. Months organize the reading path; they are not earlier publication dates.

A short architecture article. The technical reference supports the topic; hypothetical scenarios and assessment proposals are editorial analysis, not accounts of personal implementations.

## The architecture decision

Rotation may work for new writes while historical data still depends on old material. Removing a key without understanding those relationships can undermine recovery.

## Practical application

Editorial proposal: map key versions to datasets and backups. In a hypothetical long-term archive, distinguish stopping encryption with a key from no longer needing it for reads.

## How to verify

Before retirement, restore synthetic data representing older versions. Document approval ownership and supporting evidence. A useful indicator is not just key age, but understanding the dependencies that still justify keeping it.

## Sources

- [OWASP — Key Management Cheat Sheet](https://cheatsheetseries.owasp.org/cheatsheets/Key_Management_Cheat_Sheet.html). Accessed: 2026-09-12.

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