Authenticated Encryption with Key Identification
Authenticated Encryption with Key Identification
复制标题
带有密钥识别的认证加密
DOI:
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复制
发表时间:
2022
期刊:
影响因子:
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通讯作者:
Thomas Ristenpart
中科院分区:
文献类型:
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作者:
Julia Len;Paul Grubbs;Thomas Ristenpart
. Authenticated encryption with associated data (AEAD) forms the core of much of symmetric cryptography, yet the standard techniques for modeling AEAD assume recipients have no ambiguity about what secret key to use for decryption. This is divorced from what occurs in practice, such as in key management services, where a message recipient can store numerous keys and must identify the correct key before decrypting. To date there has been no formal investigation of their security properties or efficacy, and the ad hoc solutions for identifying the intended key deployed in practice can be inefficient and, in some cases, vulnerable to practical attacks. We provide the first formalization of nonce-based AEAD that supports key identification (AEAD-KI). Decryption now takes in a vector of secret keys and a ciphertext and must both identify the correct secret key and decrypt the ciphertext. We provide new formal security definitions, including new key robustness definitions and indistinguishability security notions. Finally, we show several different approaches for AEAD-KI and prove their security.
DOI:
10.1007/978-3-031-07085-3_29
发表时间:
2022
期刊:
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影响因子:
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作者:
M. Bellare;V. Hoang
通讯作者:
M. Bellare;V. Hoang
DOI:
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发表时间:
2021
期刊:
USENIX Security Symposium
影响因子:
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作者:
Len, Julia;Grubbs, Paul;Ristenpart, Thomas
通讯作者:
Ristenpart, Thomas
DOI:
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发表时间:
2018
期刊:
Advances in Cryptology - CRYPTO
影响因子:
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作者:
Dodis, Yevgeniy;Grubbs, Paul;Ristenpart, Thomas;Woodage, Joanne
通讯作者:
Woodage, Joanne