[FEATURE]: Add AES-SIV (RFC 5297) AEAD variant to Cryptography Registry #763
Description
Describe the feature
What:
Add AES-SIV (RFC 5297) as an AEAD variant under the existing AES family in the Cryptography Registry.
Why:
AES-SIV is a standardized, widely recognized misuse-resistant AEAD mode. Adding it improves consistent algorithm identification and crypto governance reporting.
Proposed registry entry:
- Family: AES
- Primitive: ae
- Pattern:
AES[-(128|192|256)]-SIV - Standard: RFC 5297 (
https://doi.org/10.17487/RFC5297)
Possible solutions
Add a new variant entry to schema/cryptography-defs.json under the AES family.
Alternatives
Leave registry incomplete and rely on ad-hoc naming across tools.
Additional context
Registry-only completeness addition. No schema/spec behavior changes.