Sökning: "Double Ratchet"

Hittade 2 uppsatser innehållade orden Double Ratchet.

1. 1. On Asynchronous Group Key Agreement : Tripartite Asynchronous Ratchet Trees

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Phillip Gajland; [2020]
   Nyckelord :MLS; secure messaging; cryptography; MLS; säker meddelandehantering; kryptografi;

   Sammanfattning : The subject of secure messaging has gained notable attention lately in the cryptographic community. For communications between two parties, paradigms such as the double ratchet, used in the Signal protocol, provide provably strong security guarantees such as forward secrecy and post-compromise security. LÄS MER

3. 2. A Performance Evaluation of Post-Quantum Cryptography in the Signal Protocol

   Master-uppsats, Linköpings universitet/Informationskodning

   Författare :Markus Alvila; [2019]
   Nyckelord :post-quantum; resistant; cryptography; commutative; supersingular; isogeny; Diffie-Hellman; CSIDH; Signal; protocol; X3DH; Double Ratchet; Curve25519; performance; evaluation; CPU; profiling; Android;

   Sammanfattning : The Signal protocol can be considered state-of-the-art when it comes to secure messaging, but advances in quantum computing stress the importance of finding post-quantum resistant alternatives to its asymmetric cryptographic primitives. The aim is to determine whether existing post-quantum cryptography can be used as a drop-in replacement for the public-key cryptography currently used in the Signal protocol and what the performance trade-offs may be. LÄS MER