Title	Comments on Wei’s Digital Signature Scheme Based on Two Hard Problems
Author	H. F. Lin, C. Y. Gun, C. Y. Chen
Citation	Vol. 9  No. 2  pp. 1-3
Keywords	digital signature, factorization problem, discrete logarithm problem, two hard problems

Title	Krawtchouk Moment Feature Extraction for Neural Arabic Handwritten Words Recognition
Author	Anass El affar, Khalid Ferdous, Abdeljabbar Cherkaoui, Hakim El fadili, Hassan Qjidaa
Citation	Vol. 9  No. 1  pp. 417-423
Keywords	Method of moments, invariant krawtchouk moments, multilayer feedforward neural network, Arabic handwritten recognition

Title	Elliptic Curve Cryptography Over Gaussian Integers
Author	Elsayed Mohamed, Hassan Elkamchouchi
Citation	Vol. 9  No. 1  pp. 413-416
Keywords	Elliptic Curve Cryptography, Gaussian Integers

Title	The Exchange of the Electronic Validity of Data in the Electronic Commerce
Author	Hassan Samavarchi, Mohammad Reza Dehghani
Citation	Vol. 9  No. 1  pp. 408-412
Keywords	the electronic commerce, the security of data, the time of process, the duration of process)