Why Postgres Lacks Transparent Data Encryption
Postgres currently lacks Transparent Data Encryption (TDE), a feature available in other major database systems. The absence of TDE has sparked ongoing debates within the Postgres community regarding its necessity and implementation. Various companies have developed their own TDE solutions for Postgres, but none are compatible with the community release, highlighting the challenges of integrating this feature into the core system.
- ▪Postgres does not have Transparent Data Encryption, unlike Oracle, SQL Server, and MySQL.
- ▪The debate over TDE's necessity in Postgres centers around its limited protection against certain threats and existing alternatives like filesystem encryption.
- ▪Five companies have created separate TDE implementations for Postgres, but none are compatible with the community version.
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If you've ever compared database feature matrices, you may have noticed something a bit peculiar. Oracle has Transparent Data Encryption. SQL Server has it. MySQL has it. Even MariaDB has it. But Postgres, which we all consider the best database engine? Conspicuously absent.It’s not that nobody wants TDE. Compliance frameworks like PCI DSS and HIPAA practically demand encryption at rest. Cloud deployments make the “stolen disk” threat model more tangible than ever. And the question comes up constantly on mailing lists, at conferences, and in every database evaluation checklist ever assembled by a procurement department. So what gives?It’s complicated.
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