Efficient Schemes for Committing Authenticated Encryption

Efficient Schemes for Committing Authenticated Encryption
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DOI:
10.1007/978-3-031-07085-3_29
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发表时间:
2022
期刊:
--
影响因子:
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通讯作者:
M. Bellare;V. Hoang
M. Bellare;V. Hoang
中科院分区:
其他
文献类型:
--
作者:
M. Bellare;V. Hoang

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本文提出了一种有效的认证加密方案,其中密文是密钥的承诺。这些扩展,以最小的额外成本,方案的密文是一个承诺的所有加密输入,这意味着密钥,随机数,相关的数据和消息。我们的主要方案是修改GCM(基本的,唯一的nonce AE安全)和AES-GCM-SIV(防滥用AE安全),并添加这两种形式的承诺,而没有任何增加的密文大小。我们还提供更通用但成本更高的解决方案。
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.