Authenticated Encryption vs Encrypt-then-MAC

Developers should use Authenticated Encryption when handling sensitive data that requires both privacy and integrity, such as in secure communications (e meets developers should use encrypt-then-mac when building systems that require secure data transmission or storage, such as in web apis, messaging apps, or file encryption tools, to defend against tampering and eavesdropping. Here's our take.

Authenticated Encryption

Nice Pick

Developers should use Authenticated Encryption when handling sensitive data that requires both privacy and integrity, such as in secure communications (e

Pros

• g
• Related to: cryptography, symmetric-encryption

Cons

• Specific tradeoffs depend on your use case

Encrypt-then-MAC

Developers should use Encrypt-then-MAC when building systems that require secure data transmission or storage, such as in web APIs, messaging apps, or file encryption tools, to defend against tampering and eavesdropping

Pros

• It is particularly crucial in scenarios where data integrity is as important as confidentiality, like in financial transactions or sensitive communications, as it ensures that any modification of encrypted data is detected before processing
• Related to: cryptography, message-authentication-code

Cons

• Specific tradeoffs depend on your use case

The Verdict

Use Authenticated Encryption if: You want g and can live with specific tradeoffs depend on your use case.

Use Encrypt-then-MAC if: You prioritize it is particularly crucial in scenarios where data integrity is as important as confidentiality, like in financial transactions or sensitive communications, as it ensures that any modification of encrypted data is detected before processing over what Authenticated Encryption offers.

The Bottom Line

Authenticated Encryption wins

Developers should use Authenticated Encryption when handling sensitive data that requires both privacy and integrity, such as in secure communications (e