Authentication in Insecure Environments

Using Visual Cryptography and Non-Transferable Credentials in Practise

  • Sebastian┬áPape

Table of contents

  1. Front Matter
    Pages I-XVI
  2. Sebastian Pape
    Pages 1-5
  3. Preliminaries

    1. Front Matter
      Pages 7-7
    2. Sebastian Pape
      Pages 9-77
  4. Human Decipherable Encryption Schemes

    1. Front Matter
      Pages 79-79
    2. Sebastian Pape
      Pages 81-86
    3. Sebastian Pape
      Pages 87-134
    4. Sebastian Pape
      Pages 197-205
  5. Non-Transferable Anonymous Credentials

    1. Front Matter
      Pages 207-207
    2. Sebastian Pape
      Pages 209-212
    3. Sebastian Pape
      Pages 213-227
    4. Sebastian Pape
      Pages 253-256
  6. Outlook and Appendix

    1. Front Matter
      Pages 257-257
    2. Sebastian Pape
      Pages 259-263
  7. Back Matter
    Pages 265-362

About this book


Sebastian Pape discusses two different scenarios for authentication. On the one hand, users cannot trust their devices and nevertheless want to be able to do secure authentication. On the other hand, users may not want to be tracked while their service provider does not want them to share their credentials.

Many users may not be able to determine whether their device is trustworthy, i.e. it might contain malware. One solution is to use visual cryptography for authentication. The author generalizes this concept to human decipherable encryption schemes and establishes a relationship to CAPTCHAS. He proposes a new security model and presents the first visual encryption scheme which makes use of noise to complicate the adversary's task.

To prevent service providers from keeping their users under surveillance, anonymous credentials may be used. However, sometimes it is desirable to prevent the users from sharing their credentials. The author compares existing approaches based on non-transferable anonymous credentials and proposes an approach which combines biometrics and smartcards.


  • Human Decipherable Encryption Schemes
  • Visual Cryptography
  • Non-Transferable Anonymous Credentials
  • Authentication

 Target Groups

  • Teachers, students and practitioners in the fields of cryptography and IT security

 About the Author

Dr. Sebastian Pape is postdoctoral researcher at the Chair of Software Engineering at Technical University Dortmund.


Authentication Computer Safety Cryptography Internet Use Privacy Enhancing Technologies

Authors and affiliations

  • Sebastian┬áPape
    • 1
  1. 1.FB Informatik, LS 14TU DortmundDortmundGermany

Bibliographic information

  • DOI
  • Copyright Information Springer Fachmedien Wiesbaden 2014
  • Publisher Name Springer Vieweg, Wiesbaden
  • eBook Packages Computer Science
  • Print ISBN 978-3-658-07115-8
  • Online ISBN 978-3-658-07116-5
  • Buy this book on publisher's site