Anja Lehmann  Anja Lehmann photo       

contact information

Research Staff Member
IBM Research - Zurich, Switzerland



I am a researcher in the security group at IBM Research Zurich, where I work in the area of cryptography, information security and privacy. More specifically, I'm interested in the design of cryptographic protocols with provable security guarantees. See the publications section for recent research results.

I'm also interested in bringing new crypto and privacy techniques into the real world. Recent examples are our works on chameleon pseudonyms for distributed databases and password-based protocols that withstand offline attacks in case of server breaches. In the ABC4Trust, FutureID and FI-Ware projects, I was further working on the deployment of privacy-enhancing credentials, such as IBM's Identity Mixer, in real-world applications and infrastructures. 

Before joining IBM in 2010, I completed my PhD at Darmstadt University of Technology in Germany, supervised by Marc Fischlin. I joined IBM as a PostDoc and became a permanent research staff member in 2012.


Scientific Service:


Recent Talks:

  • Cryptographic Approaches to Tokenization, Pseudonymization & Transparency [slides]
    IFIP summer school on privacy and identity management (Invited talk), Ispra, September 2017
  • UC-Secure Non-Interactive (Adaptively-Secure) Public-Key Encryption [slides]
    IEEE CSF conference, Santa Barbara, August 2017
  • Privacy-Enhancing Technologies: DAA, Anonymous Credentials and Pseudonym Systems [slides]
    ECRYPT-CSA Workshop on Complex Crypto Protocols (Invited talk), Bristol, May 2017
  • Privacy-Preserving & User-Auditable Pseudonym Systems [slides]
    IEEE EuroS&P conference, Paris, April 2017
  • Privacy for Distributed Databases via (Un)linkable & Auditable Pseudonyms [slides]
    CryptoAction Symposium, Amsterdam, March 2017
  • Direct Anonymous Attestation and TPM 2.0: Getting Provably-Secure Crypto into the Real-World [slides] [video]
    Real World Cryptography Conference (Invited talk), New York, January 2017
  • (Un)linkable Pseudonyms for Governmental Databases [slides]
    ACM CCS conference, Denver, October 2015
  • Cryptography for People (Strong Crypto from Passwords & (Un)linkable Pseudonyms) [slides]
    IFIP summer school on privacy and identity management (Invited talk), Edinburgh, August 2015
  • Privacy-Enhancing Technologies & Applications to eHealth [slides]
    Health 2.0 Forum (Invited talk), Zurich, April 2015
  • A Movie Streaming Application & ABC4Trust as Services in the Cloud [slides]
    ABC4Trust Summit, Brussels, January 2015
  • Integrating Privacy-Enhancing Credentials in the FutureID Architecture
    EAB Research Projects Conference (EAB-RPC), Darmstadt, September 2014
  • Memento: How to Reconstruct Your Secrets from a Single Password in a Hostile Environment [slides] [video]
    CRYPTO, Santa Barbara, August 2014
  • Privacy-Enhancing Credentials Going Live: From Theory to Practice (and vice-versa)
    USI Lugano, May 2014

Projects and Groups

Technical Areas