literature.cafe

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(and anyone else, really)

This is a general special interest lemmy instance focusing on lovers of all things pertaining to reading and writing and all of the people that enjoy it as well as fandoms and niches that exist within reading circles. We federate with other instances, with our local communities being focused primarily on the above.

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We also have alternative lemmy UIs to use for those who want them.

A familiar UI - old.literature.cafe

Photon - ph.literature.cafe

Tesseract (photon fork with more multimedia focused features) - t.literature.cafe

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founded 1 year ago
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Quantum Resistance and the Signal Protocol (signal.org)
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Quantum Resistance and the Signal Protocol (signal.org)
 
 

The Signal Protocol is a set of cryptographic specifications that provides end-to-end encryption for private communications exchanged daily by billions of people around the world. After its publication in 2013, the Signal Protocol was adopted not only by Signal but well beyond. Technical informat...

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Quantum Resistance and the Signal Protocol (signal.org)
 
 

The Signal Protocol is a set of cryptographic specifications that provides end-to-end encryption for private communications exchanged daily by billions of people around the world. After its publication in 2013, the Signal Protocol was adopted not only by Signal but well beyond. Technical information on the Signal Protocol can be found in the specifications section of our docs site.

Today we are happy to announce the first step in advancing quantum resistance for the Signal Protocol: an upgrade to the X3DH specification which we are calling PQXDH. With this upgrade, we are adding a layer of protection against the threat of a quantum computer being built in the future that is powerful enough to break current encryption standards.

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Quantum Resistance and the Signal Protocol (signal.org)
submitted 1 year ago* (last edited 1 year ago) by Voyager@psychedelia.ink to c/cryptography@lemmy.ml
6 comments fedilink
 
 

The article is about:

  • The Signal Protocol, a set of cryptographic specifications that provides end-to-end encryption for private communications. PQXDH, an upgrade to the Signal Protocol that adds a layer of protection against the threat of a future quantum computer breaking current encryption standards.
  • Quantum computing, a new type of computational system that can solve some complex problems faster than classical computers, such as the hidden subgroup problem that underlies many public key cryptosystems4.
  • Post-quantum cryptography, a new category of algorithms that resist quantum attacks, and how Signal has chosen CRYSTALS-Kyber as its post-quantum key encapsulation mechanism.
  • The implementation and deployment of PQXDH in Signal’s client applications and the open research areas for further quantum resistance.
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Quantum Resistance and the Signal Protocol (signal.org)
submitted 1 year ago* (last edited 1 year ago) by jokeyrhyme@lemmy.ml to c/privacy@lemmy.ml
20 comments fedilink
 
 

We believe that the key encapsulation mechanism we have selected, CRYSTALS-Kyber, is built on solid foundations, but to be safe we do not want to simply replace our existing elliptic curve cryptography foundations with a post-quantum public key cryptosystem. Instead, we are augmenting our existing cryptosystems such that an attacker must break both systems in order to compute the keys protecting people’s communications.

...

Our new protocol is already supported in the latest versions of Signal’s client applications and is in use for chats initiated after both sides of the chat are using the latest Signal software. In the coming months (after sufficient time has passed for everyone using Signal to update), we will disable X3DH for new chats and require PQXDH for all new chats. In parallel, we will roll out software updates to upgrade existing chats to this new protocol.

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Quantum Resistance and the Signal Protocol (signal.org)
 
 

HN Discussion

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Quantum Resistance and the Signal Protocol (signal.org)
 
 

There is a discussion on Hacker News, but feel free to comment here as well.

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Quantum Resistance and the Signal Protocol (signal.org)
submitted 1 year ago* (last edited 1 year ago) by LollerCorleone@kbin.social to c/signal@lemmy.ml
10 comments fedilink
 
 

'Today we are happy to announce the first step in advancing quantum resistance for the Signal Protocol: an upgrade to the X3DH specification which we are calling PQXDH. With this upgrade, we are adding a layer of protection against the threat of a quantum computer being built in the future that is powerful enough to break current encryption standards.'

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