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The RSA PKCS#1 v1.5 signature algorithm is the most widely used digital signature scheme in practice. Its two main strengths are its extreme simplicity, which makes it very easy to implement, and that...
On The Broadcast and Validity-Checking Security of PKCS 1v1.5 Encryption
pkcs#1v1.5 Encryption Broadcast Encryption Cryptanalysis
2010/3/16
This paper describes new attacks on pkcs#1 v1.5, a deprecated
but still widely used rsa encryption standard.
The first cryptanalysis is a broadcast attack, allowing the opponent to
reveal an identi...
QTRU: A Lattice Attack Resistant Version of NTRU PKCS Based on Quaternion Algebra
QTRU NTRU quaternion algebra
2009/8/18
We propose QTRU, a probabilistic and multi-dimensional public key cryptosystem based on
the NTRU public key cryptosystem using quaternion algebra. QTRU encrypts four data vectors
in each encryption ...
QTRU: A Lattice Attack Resistant Version of NTRU PKCS Based on Quaternion Algebra
QTRU NTRU quaternion algebra
2009/7/14
We propose QTRU, a probabilistic and multi-dimensional public-key cryptosystem based on
the NTRU public-key cryptosystem using quaternion algebra. QTRU encrypts four data vectors
in each encryption ...
Small Odd Prime Field Multivariate PKCs
Gr¨obner basis multivariate public key cryptosystem TTS
2009/6/10
We show that Multivariate Public Key Cryptosystems (MPKCs)
over fields of small odd prime characteristic, say 31, can be highly
efficient. Indeed, at the same design security of 280 under the best k...
Side Channel Attacks on CBC Encrypted Messages in the PKCS#7 Format
CBC symmetrical encryption padding
2009/4/9
Vaudenay has shown in [5] that a CBC encryption mode ([2], [9]) combined with the PKCS#5 padding [3]
scheme allows an attacker to invert the underlying block cipher, provided she has access to a vali...
TTS: Rank Attacks in Tame-Like Multivariate PKCs
TTS Rank Attacks Tame-Like Multivariate PKCs
2009/3/24
We herein discuss two modes of attack on multivariate public-key cryptosystems. A 2000
Goubin-Courtois article applied these techniques against a special class of multivariate PKC’s
called “Triangul...