Vorrichtung und Verfahren zur Erzeugung eines Kryptographischen Algorithmus, Vorrichtung und Verfahren zur Verschlüsselung

Details

Veröffentlichungs-Nr.

EP3644546

Aktenzeichen

EP19205338

Anmeldetag

25. Oktober 2019

Veröffentlichung

18. August 2021

Erteilung

18. August 2021

Rechtsraum

EP

IPC

H04L9/06H04L9/08

Abstract

An apparatus and method of generating a cryptographic algorithm and an apparatus and method for encryption are provided. The method of generating a cryptographic algorithm according to one embodiment of the present disclosure includes generating one or more key tables on the basis of a seed value; generating, by using a round tweak bit string and an input bit string that is input to one of input branches of a Feistel structure, a first transformation function that converts the input bit string into a first random bit string having a length that extends beyond a length of the input bit string; generating a second transformation function that converts a second random bit string generated by referencing the one or more key tables into a third random bit string having a length that is the same as the length of the input bit string; and generating a block cryptographic algorithm of a Feistel structure which includes a round function to which the one or more key tables, the first transformation function, and the second transformation function are applied.

Anmelder

Firmen

Samsung SDS Co., Ltd.
Korea Advanced Institute of Science and Technology

Land

🇰🇷 Südkorea

Fachgebiete