Transaction authentication using complementary colors

Youngjae Maeng, Aziz Mohaisen, Mun Kyu Lee, Daehun Nyang

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


In this paper, we introduce a transaction authentication solution that provides compatibility with any banking transactions. Our solution is based on a novel visual cryptographic scheme that supports multiple uses of a single static share, unlike existing techniques in the literature of visual cryptography. To support multiple uses, we utilize complementary colors in the subtractive color mixing model. In our solution, a user is asked to overlap an issued visual cryptography card on an encrypted image that is rendered on a screen to check transaction information and transaction authentication number. We analyze the security of our scheme against various attacks and show its effectiveness using a usability study.

Original languageEnglish
Pages (from-to)167-181
Number of pages15
JournalComputers and Security
StatePublished - 14 Apr 2015

Bibliographical note

Publisher Copyright:
© 2014 Elsevier Ltd.


  • Additive color mixing
  • Authentication
  • Complementary colors
  • Subtractive color mixing
  • Visual cryptography


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