Paper 2022/268 Original: eprint.iacr.org/2022/268 ↗
Efficient Schemes for Committing Authenticated Encryption
Abstract
This paper provides efficient authenticated-encryption (AE) schemes in which a ciphertext is a commitment to the key. These are extended, at minimal additional cost, to schemes where the ciphertext is a commitment to all encryption inputs, meaning key, nonce, associated data and message. Our primary schemes are modifications of GCM (for basic, unique-nonce AE security) and AES-GCM-SIV (for misuse-resistant AE security) and add both forms of commitment without any increase in ciphertext size. We also give more generic, but somewhat more costly, solutions.
Metadata
- Available format(s)
PDF- Category
- Secret-key cryptography
- Publication info
- Preprint.
- History
- 2024-07-24: last updated
- 2022-03-02: published
- Short URL
- https://ia.cr/2022/268
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2022/268,
author = {Mihir Bellare and Viet Tung Hoang},
title = {Efficient Schemes for Committing Authenticated Encryption},
howpublished = {Cryptology {ePrint} Archive, Paper 2022/268},
year = {2022},
url = {https://eprint.iacr.org/2022/268}
}