Title:
APPARATUS AND METHOD FOR RANDOMIZING KEY BIT VARIABLES OF PUBLIC KEY ENCRYPTION ALGORITHM
Document Type and Number:
WIPO Patent Application WO/2019/117565
Kind Code:
A1
Abstract:
The present invention relates to an apparatus and a method for randomizing key bit variables of a public key encryption algorithm, the apparatus and the method performing initialization with a random value each time before the start of a repetitive operation for confirming a secret key bit value, and masking an n-bit secret key with an n-bit random value, thereby resolving the vulnerability of the public key encryption algorithm. The apparatus comprises: an information confirmation unit for confirming information on a chip in which the encryption algorithm operates; an encryption algorithm determination unit for determining a method implementing the encryption algorithm; a hardware correspondence processing unit for initializing the secret key bit value with the random value each time before the start of the repetitive operation for confirming the secret key bit value when the encryption algorithm is implemented in hardware; and a software correspondence processing unit for masking the secret key bit value with the random value in a step before starting the repetitive operation for confirming the secret key bit value when the encryption algorithm is implemented in software.
Inventors:
SIM BO YEON (KR)
HAN DONG GUK (KR)
HAN DONG GUK (KR)
Application Number:
PCT/KR2018/015617
Publication Date:
June 20, 2019
Filing Date:
December 10, 2018
Export Citation:
Assignee:
UNIV KOOKMIN IND ACAD COOP FOUND (KR)
International Classes:
H04L9/30
Foreign References:
| KR20080016887A | 2008-02-22 | |||
| KR20160020866A | 2016-02-24 | |||
| KR100580844B1 | 2006-05-16 | |||
| KR101665600B1 | 2016-10-12 | |||
| KR101589185B1 | 2016-01-28 | |||
| KR100891323B1 | 2009-03-31 | |||
| NO20171055423A |
Other References:
See also references of EP 3726772A4
Attorney, Agent or Firm:
JUNG, Bu Yon (KR)
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