A bisimulation for dynamic sealing

Eijiro Sumii, Benjamin C. Pierce

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)


We define λseal, an untyped call-by-value λ-calculus with primitives for protecting abstract data by sealing, and develop a bisimulation proof method that is sound and complete with respect to contextual equivalence. This provides a formal basis for reasoning about data abstraction in open, dynamic settings where static techniques such as type abstraction and logical relations are not applicable.

Original languageEnglish
Pages (from-to)169-192
Number of pages24
JournalTheoretical Computer Science
Issue number1-3
Publication statusPublished - 2007 May 1


  • Bisimulation
  • Contextual equivalence
  • Cryptographic protocols
  • Data abstraction
  • Dynamic sealing
  • Encryption
  • Information hiding
  • Security
  • λ-calculus


Dive into the research topics of 'A bisimulation for dynamic sealing'. Together they form a unique fingerprint.

Cite this