Comment on ‘Targeted Ciphers for Format‐Preserving Encryption’ from Selected Areas in Cryptography 2018

Abstract Format‐preserving encryption (FPE) allows encrypting plaintexts while preserving a specific format. In Selected Areas in Cryptography 2018, two targeted ciphers were proposed as new FPE schemes. The second scheme was designed with an algorithm called Mix–Swap–Unmix that is shown to be equiv...

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Main Authors: Dachao Wang, Baocang Wang, Yuan Ping
Format: Article
Language:English
Published: Hindawi-IET 2021-09-01
Series:IET Information Security
Subjects:
Online Access:https://doi.org/10.1049/ise2.12028
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author Dachao Wang
Baocang Wang
Yuan Ping
author_facet Dachao Wang
Baocang Wang
Yuan Ping
author_sort Dachao Wang
collection DOAJ
description Abstract Format‐preserving encryption (FPE) allows encrypting plaintexts while preserving a specific format. In Selected Areas in Cryptography 2018, two targeted ciphers were proposed as new FPE schemes. The second scheme was designed with an algorithm called Mix–Swap–Unmix that is shown to be equivalent to a particular matching exchange process under a specific setting. In this comment paper, we prove that the matching exchange process is invalid. As a result, this equivalence does not exist.
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spelling doaj.art-25a9690b9ede4982a2c31e136cf8ab5d2023-12-03T08:08:46ZengHindawi-IETIET Information Security1751-87091751-87172021-09-0115539540010.1049/ise2.12028Comment on ‘Targeted Ciphers for Format‐Preserving Encryption’ from Selected Areas in Cryptography 2018Dachao Wang0Baocang Wang1Yuan Ping2State Key Laboratory of Integrated Services Networks Xidian University Xi'an ChinaState Key Laboratory of Integrated Services Networks Xidian University Xi'an ChinaSchool of Information Engineering Xuchang University Xuchang ChinaAbstract Format‐preserving encryption (FPE) allows encrypting plaintexts while preserving a specific format. In Selected Areas in Cryptography 2018, two targeted ciphers were proposed as new FPE schemes. The second scheme was designed with an algorithm called Mix–Swap–Unmix that is shown to be equivalent to a particular matching exchange process under a specific setting. In this comment paper, we prove that the matching exchange process is invalid. As a result, this equivalence does not exist.https://doi.org/10.1049/ise2.12028cryptography
spellingShingle Dachao Wang
Baocang Wang
Yuan Ping
Comment on ‘Targeted Ciphers for Format‐Preserving Encryption’ from Selected Areas in Cryptography 2018
IET Information Security
cryptography
title Comment on ‘Targeted Ciphers for Format‐Preserving Encryption’ from Selected Areas in Cryptography 2018
title_full Comment on ‘Targeted Ciphers for Format‐Preserving Encryption’ from Selected Areas in Cryptography 2018
title_fullStr Comment on ‘Targeted Ciphers for Format‐Preserving Encryption’ from Selected Areas in Cryptography 2018
title_full_unstemmed Comment on ‘Targeted Ciphers for Format‐Preserving Encryption’ from Selected Areas in Cryptography 2018
title_short Comment on ‘Targeted Ciphers for Format‐Preserving Encryption’ from Selected Areas in Cryptography 2018
title_sort comment on targeted ciphers for format preserving encryption from selected areas in cryptography 2018
topic cryptography
url https://doi.org/10.1049/ise2.12028
work_keys_str_mv AT dachaowang commentontargetedciphersforformatpreservingencryptionfromselectedareasincryptography2018
AT baocangwang commentontargetedciphersforformatpreservingencryptionfromselectedareasincryptography2018
AT yuanping commentontargetedciphersforformatpreservingencryptionfromselectedareasincryptography2018