Prof. Benjamin Arazi
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Professor
Department :
School of Electrical and Computer Engineering
Room :
112
בנין המחלקה להנדסת חשמל ומחשבים ע"ש זלוטובסקי - 33
Phone :
972-8-6461514
Email :
arazi@ee.bgu.ac.il
Office Hours :
Education
q Ph.D. Computer Science – University of Witwatersrand, Johannesburg, South Africa (1974).
q M.Sc. Mathematics - School of Applied Sciences and Technology at the Hebrew University of Jerusalem, Israel (1972).
q B.Sc. Mathematics - The Hebrew University of Jerusalem, Israel (1970).
Research Interests
Secure communication.
Research Projects
Efficient key-agreements.
Research Abstract
Hardware cryptography Current approaches to the execution of public keycryptographic transformations by dedicated mi-crocircuits are based onfirst devising arithmetic transformations and subsequently implementingthem by rather awkward hard-ware. Alternative approaches to the analysisand synthesis of cryptographic transformations are proposed, lendingthemselves more conveniently to hardware implementation, using an ap-proachunder which the security is not based on algebraic but rather on logicdesign considerations. Certification-less public key cryptography An efficient certifi-cation method, related to DL/EC (Discrete-Log/Elliptic-Curve) signatures and key-agreements, is introduced. Instead of hav-ing two distinct processes on the verifying side, associated with certificate verification and subsequent verification of the valid-ity of a dynamic received value, these two processes are com-bined into one. Instead of submitting separately a public key and a certificate, only a single public value, whose size is that of the public key, is submitted. This applies to the DSA and other signature methods, as well as in DH Diffie-Hellman) key-agreements.