Longjiang QU


Generalized Framework to Attack RSA with Special Exposed Bits of the Private Key
Shixiong WANG Longjiang QU Chao LI Shaojing FU 
Publication:   
Publication Date: 2017/10/01
Vol. E100-A  No. 10  pp. 2113-2122
Type of Manuscript:  PAPER
Category: Cryptography and Information Security
Keyword: 
RSApartial key exposure attacklatticeLLL algorithmCoppersmith's methodunravelled linearization
 Summary | Full Text:PDF(1MB)

New Results on the Boolean Functions That Can Be Expressed as the Sum of Two Bent Functions
Longjiang QU Shaojing FU Qingping DAI Chao LI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/08/01
Vol. E99-A  No. 8  pp. 1584-1590
Type of Manuscript:  PAPER
Category: Cryptography and Information Security
Keyword: 
stream ciphersbent functionsMaiorana-MacFarland functionpartial spread function
 Summary | Full Text:PDF(817.8KB)

Construction of odd-Variable Rotation Symmetric Boolean Functions with Maximum Algebraic Immunity
Shaojing FU Jiao DU Longjiang QU Chao LI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/04/01
Vol. E99-A  No. 4  pp. 853-855
Type of Manuscript:  LETTER
Category: Cryptography and Information Security
Keyword: 
cryptographyrotation symmetric Boolean functionsalgebraic immunitynonlinearity
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A New Attack on RSA with Known Middle Bits of the Private Key
Shixiong WANG Longjiang QU Chao LI Shaojing FU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/12/01
Vol. E98-A  No. 12  pp. 2677-2685
Type of Manuscript:  PAPER
Category: Cryptography and Information Security
Keyword: 
RSAattack with known middle bitsCoppersmith's methodlatticeLLL algorithmunravelled linearization
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On the Balanced Elementary Symmetric Boolean Functions
Longjiang QU Qingping DAI Chao LI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/02/01
Vol. E96-A  No. 2  pp. 663-665
Type of Manuscript:  LETTER
Category: Cryptography and Information Security
Keyword: 
algebraic degreeBoolean functionselementary symmetricbalanced
 Summary | Full Text:PDF(79.1KB)

Generalized Construction of Boolean Function with Maximum Algebraic Immunity Using Univariate Polynomial Representation
Shaojing FU Chao LI Longjiang QU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/01/01
Vol. E96-A  No. 1  pp. 360-362
Type of Manuscript:  LETTER
Category: Cryptography and Information Security
Keyword: 
cryptographyBoolean functionalgebraic immunity
 Summary | Full Text:PDF(82.9KB)

A Comment on Algebraic Immunity of the Sum of Two Boolean Functions
Longjiang QU Shaojing FU Chunqing WU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/07/01
Vol. E95-A  No. 7  pp. 1187-1188
Type of Manuscript:  LETTER
Category: Cryptography and Information Security
Keyword: 
Boolean functionsumalgebraic immunity
 Summary | Full Text:PDF(57.7KB)

Construction of Odd-Variable Resilient Boolean Functions with Optimal Degree
Shaojing FU Chao LI Kanta MATSUURA Longjiang QU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/01/01
Vol. E94-A  No. 1  pp. 265-267
Type of Manuscript:  Special Section LETTER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
stream cipherboolean functionresiliencynonlinearity
 Summary | Full Text:PDF(93.1KB)