'Commitment scheme' diaporamas de présentation

Asynchronous Verifiable Secret Sharing

Asynchronous Verifiable Secret Sharing. Presented by Michael Sirivianos 04/22/04. What is Secret Sharing?. In many applications the dealer does not trust just one secret holder. To counter this, he shares the secret among n > k > 0 shareholders Shareholders do not trust dealer either.

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Novel Secret Sharing and Commitment Schemes for Cryptographic Applications

Novel Secret Sharing and Commitment Schemes for Cryptographic Applications. Contents of the Thesis. Head/Tail. Secret = 1. Cryptographic Primitives. Alice. Bob. Head. can not change it, just reveal it. Commitment Scheme:

455 views • 45 slides

Cryptography CS 555

538 views • 40 slides

Cryptography CS 555

506 views • 40 slides

Verifiable Threshold Secret Sharing and Full Fair Secure Two-party Computation

Verifiable Threshold Secret Sharing and Full Fair Secure Two-party Computation. YE Jian-wei March 7, 2009. outline. Full fair secure two-party computation Problem Existing methods Our method Overview Advantages Cryptography foundation

467 views • 30 slides

Receipt-freedom in voting

Pieter van Ede. Receipt-freedom in voting. Important properties of voting. Authority : only authorized persons can vote One vote Secrecy : nobody may know who voted for which candidate Correctness Verifiability

380 views • 26 slides

Computational Security

Computational Security. Overview. Goal : Obtain computational security against an active adversary. Hope: under a reasonable cryptographic assumption, obtain a computationally n -secure protocol for arbitrary functionalities. Impossible in information-theoretic setting.

234 views • 15 slides