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Cryptographic Schemes Based on the ASASA Structure: Black-box, White-box, and Public-key
ASASA multivariate cryptography white-box cryptography
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2016/1/9
In this paper we pick up an old challenge to design public key or white-box constructions
from symmetric cipher components. We design several encryption schemes based on the ASASA structure
ranging ...
Decomposing the ASASA Block Cipher Construction
Block cipher ASASA white-box cryptography
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2015/12/30
We consider the problem of recovering the internal specifi-
cation of a general SP-network consisting of three linear layers (A) interleaved
with two Sbox layers (S) (denoted by ASASA for short), gi...
Key-Recovery Attacks on ASASA
ASASA Algebraic Cryptanalysis Multivariate Cryptography
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2015/12/30
The ASASA construction is a new design scheme introduced at Asiacrypt 2014 by
Biryukov, Bouillaguet and Khovratovich. Its versatility was illustrated by building two public-key
encryption schemes, a...
Key-Recovery Attack on the ASASA Cryptosystem with Expanding S-boxes
multivariate cryptography polynomials cryptanalysis
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2015/12/29
We present a cryptanalysis of the ASASA public key cipher introduced at Asiacrypt 2014. This scheme alternates three layers of affine transformations A with two layers of quadratic substitutions S. We...