https://nalar.dev/tags/data-integrity/ Recent content in Data Integrity on Nalar Hugo en-us Tue, 08 Sep 2026 00:00:00 +0700 https://nalar.dev/use-authenticated-encryption-for-data-you-must-trust/ Tue, 08 Sep 2026 00:00:00 +0700 https://nalar.dev/use-authenticated-encryption-for-data-you-must-trust/ <p>Encrypting sensitive data can hide its contents while still leaving an important question unanswered: <strong>has the encrypted data been changed?</strong> If an application decrypts modified ciphertext without a reliable integrity check, it may consume attacker-influenced plaintext even though the attacker never learned the encryption key.</p> <p>That distinction matters anywhere decrypted data affects a security decision, a payment amount, a permission, a destination, or another meaningful application state. Confidentiality answers who can read the data. Integrity answers whether the protected data is the same data that an authorized key holder produced.</p>