Become a fan of Slashdot on Facebook

 



Forgot your password?
typodupeerror
China Networking The Internet

China Plans To Launch the World's First 'Unhackable' Quantum Communication Network (phys.org) 72

An anonymous reader quotes Phys.org: China is about to launch the Jinan Project, the world's first unhackable computer network, and a major milestone in the development of quantum technology... the network is planned to be fully operational by the end of August 2017... By launching the network, China will become the first country worldwide to implement quantum technology for a real life, commercial end. It also highlights that China is a key global player in the rush to develop technologies based on quantum principles, with the EU and the United States also vying for world leadership in the field.

The network, known as a quantum key distribution (QKD) network, is more secure than widely used electronic communication equivalents. Unlike a conventional telephone or internet cable, which can be tapped without the sender or recipient being aware, a QKD network alerts both users to any tampering with the system as soon as it occurs. This is because tampering immediately alters the information being relayed, with the disturbance being instantly recognisable. Once fully implemented, it will make it almost impossible for other governments to listen in on Chinese communications... It will be the world's longest land-based quantum communications network, stretching over 2,000 km.

This discussion has been archived. No new comments can be posted.

China Plans To Launch the World's First 'Unhackable' Quantum Communication Network

Comments Filter:
  • by SlaveToTheGrind ( 546262 ) on Saturday August 26, 2017 @02:00PM (#55090215)

    that the Chinese government finally appreciates the benefit of communication free of surveillance. [wikipedia.org]

    • that the Chinese government finally appreciates the benefit of communication free of surveillance. [wikipedia.org]

      The Chinese government has limited interest in monitoring private individual-to-individual and commercial communications that would use this technology. They are mostly concerned with one-to-many platforms such as social media, that can be used to spread incorrect thinking, rile up the masses, and promote disharmony.

      • by gtall ( 79522 )

        More accurately, the Chinese government is interested in monitoring anything that might threaten to reveal their toy Communist government is run by a bunch of thugs.

        • by ShanghaiBill ( 739463 ) on Saturday August 26, 2017 @03:50PM (#55090519)

          Actually, the opposite is true. The Chinese government is more interested in intimidation than censorship. They try to emphasize the thuggery rather than hide it. Instead of just subtly deleting offending social media posts, the posts are often edited to replace or modify violations with warnings, to send a clear message to both posters and readers that "we are watching you".

          • BS - the Chinese gov is a bunch of thugs no different than Russia or Saudi - Nice people do go into government - anywhere.

            We would be much better off without elections - picking the legislaters by a random draw of tax payers.. The one party system has failed China - as it is now failing the US (Demopublicans).

            I've talked with Chinese students here for over 30 years - it is pure propaganda that they don't do slave labor - physically hitting workers is common. There is a serious problem with corruption in th

    • nothing is unhackable.
  • From a government who wants total control over all communication.
  • by jcochran ( 309950 ) on Saturday August 26, 2017 @02:05PM (#55090237)

    but the name is fairly revealing. And as typical, the media over states its capability.
    quantum key distribution (QKD) - Strongly implies that the network will be used for distributing cryptographic keys. Which makes sense since the bandwidth is likely to rather limited. And that means that the actual messages using those keys are subject to possible decryption. But still a very impressive accomplishment.

  • disturbances
  • by Anonymous Coward

    Unhackable? Sounds like they're issuing a challenge. Usually when statements like this are made, they usually result in the supposedly unhackable system being hacked pretty quickly. I predict this will be hacked quickly as well.

    • Re:Unhackable? (Score:4, Insightful)

      by grahammm ( 9083 ) <graham@gmurray.org.uk> on Saturday August 26, 2017 @02:23PM (#55090291)

      Probably unhackable in the same way as the Titanic was unsinkable.

    • It depends on what they mean when they say that. If the "network" part of their unhackable network is only the part that distributes the keys, and not the part the contains the data that the keys are intended to be used to protect, that will be much harder to hack. Also, if the "unhackable" part of their unhackable network refers only to something done with only electronic access, and not something done with physical access or social engineering of the network operators, then the hacking will also be harder
    • by Maritz ( 1829006 )

      Unhackable? Sounds like they're issuing a challenge. Usually when statements like this are made, they usually result in the supposedly unhackable system being hacked pretty quickly. I predict this will be hacked quickly as well.

      The laws of physics preclude you sampling the signal without it being noticed by the intended recipient. Simple as that.

      Getting around it would be... "non-trivial".

  • If the data is being written via a "network" stack, it's vulnerable to root kits on either end of the communications. It's also useless against the "Great Firewall of China", which forces access to through Chinese government owned or controlled proxies to control or monitor specific content at whim.

  • by Anonymous Coward

    Just in case you want to say "hello" and "goodbye" at the exact same time.

  • Unlike a conventional telephone or internet cable, which can be tapped without the sender or recipient being aware, a QKD network alerts both users to any tampering with the system as soon as it occurs.

    The bitrate for quantum encryption is too slow to actually use it to encrypt the data you're transmitting. Instead, you use it to encrypt a key which you transmit to the recipient. The data is then encrypted via standard cryptography using that key - basically a one-time pad. That's why it's called Quan

  • ...why diffie-hellman isn't good enough?

    • Long term security comes to mind. A very comon use of DH protocols is to agree on a key for encrypting content. Suppose an attacker records the public keys used in the DH session as well as the subsequent encrypted content. If in 20 years they get there hands on a powerful enough quantum computer they could go back and break the DH part, redrive the encryption key and then decrypt all recorded content.

      my question is why not use post-quantum (e.g. lattice based) key agreement instead of QKD... they r startin

      • by fisted ( 2295862 )

        kthnx

      • by Anonymous Coward

        The reason we don't use any of the so-called post quantum key exchange protocols yet is because we don't know enough about their security profiles yet. For example we don't know how hard theu are to break so we don't know the strength parameters to use (say to make it secure for 20 years). We also don't know enough about algorithms that quantum computers could efficiently execute that might radically change these numbers.

        The last thing you want to do is jump out of the frying pan and find yourself in the fi

  • Why do I have the feeling that this is a two edged sword? Unhackable, but why? If communication is tapped then they know immediately, but will they know who? Would all non-government approved quantum communication become illegal? Will VPN and and proxies still work? Proprietary private communication networks the government itself now holds the only key to? Good luck using Tor with this.
    • by Maritz ( 1829006 )
      The bandwidth on this is too low for any of these to be a concern in the medium to long term. You need to be able to create entangled particles.
  • It is great that humans are able to accomplish this, but to me it is worrying that China will use it against the US rather than progressing mankind. Politics and countries not getting along hinder human advancement and overall scientific progress.

You have junk mail.

Working...