Validating IGE mode of block cipher from quantum adversaries = IGE 모드를 사용한 블록암호의 양자 안전성

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The Telegram which is a very popular messenger uses a special mode called IGE(Infinite Garble Extension). IGE mode is not included in standard mode of operation recommended by National Institute of Standards and Technology(NIST) in 2001. Block cipher encrypts fixed length of plaintext into the corresponding fixed-length of ciphertext using a secret key shared by two parties and utilizes lots of mode of operation for various length of plaintext. Even though Telegram uses non-standard IGE mode, Telegram is claimed to be secure and demonstrate their security is stronger than other IM's. Thus, we need to verify the security of IGE mode depending on underlying block ciphers. In this paper, we show that IGE mode block cipher used in Telegram assuming sPRF is not IND-qCPA, but assuming qPRF is IND-qCPA.
Advisors
Kim, Kwangjoresearcher김광조researcher
Description
한국과학기술원 :전산학부,
Publisher
한국과학기술원
Issue Date
2018
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 전산학부, 2018.2,[iv, 36 p. :]

Keywords

Post-quantum cryptography▼aInfinite Garble Extension(IGE) mode▼aTelegram▼aIND-qCPA; 양자 내성암호▼a양자 컴퓨터▼aIGE 모드▼a블록암호▼a양자 선택평문공격에 대한 비구별성

URI
http://hdl.handle.net/10203/267004
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=734074&flag=dissertation
Appears in Collection
CS-Theses_Master(석사논문)
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