Title:
暗号化装置、暗号化方法、プログラム、復号装置、復号方法
Document Type and Number:
Japanese Patent JP7323196
Kind Code:
B2
Abstract:
An encryption device includes an encryption unit that encrypts blocks, obtained by dividing a plaintext, with use of an auxiliary variable, a partial checksum generation unit that generates a plurality of partial checksums on the basis of the blocks obtained by dividing the plaintext, a meta checksum generation unit that generates a meta checksum on the basis of the partial checksums generated by the partial checksum generation unit, and a tag generation unit that generates a tag to be used for detecting tampering, on the basis of the meta checksum generated by the meta checksum generation unit. The encryption device outputs a ciphertext encrypted by the encryption unit and the tag generated by the tag generation unit.
Inventors:
Kazuhiko Minematsu
Application Number:
JP2020501908A
Publication Date:
August 08, 2023
Filing Date:
February 21, 2018
Export Citation:
Assignee:
NEC
International Classes:
H04L9/06; G09C1/00
Foreign References:
| WO2015015702A1 | ||||
| US20130077780 | ||||
| US20140146964 | ||||
| US20080172562 |
Other References:
ABED, F., FORLER, C. and LUCKS, S.,General classification of the authenticated encryption schemes for the CAESER competition,Cryptology ePrint Archve,Report 2014/792,[online],2016年10月13日,pp.1-28,
Attorney, Agent or Firm:
Baba Shiho
Hiromi Sakai
Yuuji Katsuragi
Karakama Mutsumi
Hiromi Sakai
Yuuji Katsuragi
Karakama Mutsumi