Electronics and Telecommunications Research Institute

Sangwoon Yang

Junyoung Son

Donggeon Lee

Dongsoo Kim

Yunkoo Lee

Minkyu Joo

A physical level-based security system for data security of a security terminal and a method using the system. The security system includes at least one normal terminal corresponding to an external network, a security terminal corresponding to an internal network and storing sensitive data, and an interface device for transmitting input information of a user to any one of the at least one normal terminal and the security terminal, and providing unidirectional transmission service from the at least one normal terminal to the security terminal.

Physical level-based security system for data security of security terminal and method using the same

In a method of performing a multiplication operation in a binary extension finite field, a polynomial defined by is produced by expanding polynomial basis multiplication for multiplication of two polynomials a(z) and b(z) in a binary extension finite field. A mapping table is generated in which bit values having pieces of information about respective terms of the produced polynomial are mapped to respective rows. A code for calculating the polynomial, produced by expanding the polynomial basis multiplication for the multiplication of the two polynomials, with reference to the mapping table is generated. A multiplication operation of the two polynomials a(z) and b(z) in the binary extension finite field is performed by executing the code for calculating the polynomial wherein and W denotes a number of bits of a word that is an operation processing unit of a processor.

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Daejeon, South Korea

Sangwoon Yang