Tag

#CMAC

2 articles with this tag.

Authenticated Encryption (AEAD) Advanced

The AES-SIV Algorithm

AES-SIV is an authenticated encryption mode that keeps working when a nonce is reused. Learn how its CMAC-based S2V function builds a synthetic IV, how that value becomes both the tag and the counter, and why SIV is the standard choice for key wrapping.

Oct 5, 2026 15 min read

A visual representation of the CMAC Algorithm

Message Authentication Codes Intermediate

CMAC: Cipher-Based Message Authentication

What if you already have AES in your system and don't want to bring in a separate hash function just for message authentication? CMAC builds a MAC directly from a block cipher instead.

Aug 4, 2026 9 min read

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