AES-SIV-CMAC nonce sizes
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- Dominant language
- Rust
- Stars
- 961
- Forks
- 200
- Avg merge
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- Merged PRs (30d)
- 6
Description
RFC 5297 specifies AES-CIV-CMAC as being able to accept any nonce size >= 1. However, the implementation here only supports 16 byte nonces. Would it be possible to support the other nonce sizes? I guess this would require a more general change to move closer to the aead interface specified in rfc 5116?
I am specifically asking for this as it would be required for me to support those different nonce sizes if I want to build a RFC-8915 compliant NTS server.
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Research direction
The issue names no files or tests; start by locating the AES-SIV-CMAC implementation and its 16-byte nonce validation. Compare the nonce requirements in RFC 5297 with the AEAD interface in RFC 5116, then verify that supported nonce sizes meet the RFC 8915 NTS-server use case.
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Assessment
- Tech stack
- rust
- Domain
- cryptography
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100