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Beyond Birthday Bound Secure MAC in Faulty Nonce Model
Graceful Security Faulty Nonce Mirror Theory
2019/2/27
Encrypt-then-MAC (EtM) is a popular mode for authenticated encryption (AE). Unfortunately, almost all designs following the EtM paradigm, including the AE suites for TLS, are vulnerable against nonce ...
Generic Attacks against Beyond-Birthday-Bound MACs
Modes of operation Cryptanalysis Message Authentication Codes
2018/6/5
In this work, we study the security of several recent MAC constructions with provable security beyond the birthday bound. We consider block-cipher based constructions with a double-block internal stat...
Encrypt or Decrypt? To Make a Single-Key Beyond Birthday Secure Nonce-Based MAC
EDMEDM EWCDMEWCDM Mirror Theory
2018/5/28
The international standard ISO/IEC 9797-1:2011 specifies six versions of MACs, called MAC Algorithm 1-6, and many of these MACs enjoy widespread use in practical applications. However, security guaran...
Revisiting Full-PRF-Secure PMAC and Using It for Beyond-Birthday Authenticated Encryption
message authentication codes authenticated encryption provable security
2016/12/29
This paper proposes an authenticated encryption scheme, called SIVx, that preserves BBB security also in the case of unlimited nonce reuses. For this purpose, we propose a single-key BBB-secure messag...
EWCDM: An Efficient, Beyond-Birthday Secure, Nonce-Misuse Resistant MAC
Wegman-Carter MAC Davies-Meyer construction nonce-misuse resistance
2016/5/30
We propose a nonce-based MAC construction called EWCDM (Encrypted Wegman-Carter with Davies-Meyer), based on an almost xor-universal hash function and a block cipher, with the following properties: (i...
Efficient Beyond-Birthday-Bound-Secure Deterministic Authenticated Encryption with Minimal Stretch
deterministic authenticated encryption symmetric cryptography cryptographic schemes
2016/4/22
Block-cipher-based authenticated encryption has obtained considerable attention from the ongoing CAESAR competition. While the focus of CAESAR resides primarily on nonce-based authenticated encryption...
Beyond-Birthday-Bound Security for Tweakable Even-Mansour Ciphers with Linear Tweak and Key Mixing
tweakable block cipher iterated Even-Mansour cipher key-alternating cipher
2015/12/23
The iterated Even-Mansour construction defines a block cipher from a tuple of public $n$-bit permutations $(P_1,\ldots,P_r)$ by alternatively xoring some $n$-bit round key $k_i$, $i=0,\ldots,r$, and a...
MACs (Message Authentication Codes) are widely adopted in communication systems to ensure data integrity and data origin authentication, e.g. CBC-MACs in the ISO standard 9797-1. However, all the curr...
In CRYPTO 1999, J. An and M. Bellare proposed a MerkleDamgⅹard
iteration based MAC construction called NI-MAC in order to
avoid constant re-keying on multiblock messages in NMAC and to ease
the sec...