Matthew Green

@matthew_d_green

I teach cryptography at Johns Hopkins.

Baltimore, MD
blog.cryptographyengineering.com
Joined January 2010
1,112 Photos and videos Photos and videos

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  1. Pinned Tweet
    29 Jan 2017

    List of non-US contact points for crypto/security PhD applicants (by )

    17 replies 189 retweets 387 likes
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  2. Jun 30

    If you are the kind of cryptocurrency evangelist who can’t handle being exposed to a dissenting technical opinion, please please unfollow me! Also:

    People you should unfollow:
    13 replies 8 retweets 108 likes
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  3. Retweeted
    Jun 30
    Replying to

    Every lecturer who has had to take students through k-connectivity, min cut, and other fun graph theory is screaming "I told you so!" at their computers ignoring the fact they're still offline so no one is listening this time either.

    1 reply 8 retweets 48 likes
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  4. Retweeted
    Jun 29
    Replying to

    In summary, it can be simultaneously true that (a) L2 is the only real way to do payments at scale, and (b) on-chain scaling is still hugely important, to ensure that the resulting L2 network is the one you want.

    2 replies 1 retweet 13 likes
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  5. Jun 30

    It’s nuts that two fiber cuts can bring down residential and commercial Internet (and phone) for such a huge swath of the country. How many more would have taken out cell providers?

    10 replies 12 retweets 51 likes
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  6. Jun 29

    What the hell is going on with Comcast?

    12 replies 2 retweets 21 likes
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  7. Jun 29

    So let me get this straight. In Season 1 the sitting President is suspected of accepting foreign funds through a German cutout bank, and in Season 3 the bank executive turns out to be the *son of a pivotal Supreme Court Justice*? The writers are getting lazy.

    8 replies 96 retweets 304 likes
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  8. Jun 29

    Every Kennedy (career) eulogy: hundreds of glowing words that lead you to the conclusion that nobody who really held these ideals would retire during this Presidency.

    10 replies 12 retweets 59 likes
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  9. Retweeted
    Jun 29

    ICYMI: why we think WireGuard is so important:

    2 replies 36 retweets 57 likes
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  10. Retweeted
    Jun 29

    Sen. Ron Wyden asks NIST to consider WireGuard to replace IPSEC and OpenVPN.

    16 replies 73 retweets 147 likes
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  11. Retweeted
    Jun 28

    Remember how in Harry Potter, Mrs. Weasley had that clock that showed where her family was, & it stopped working once Voldemort came back because now all the hands always just pointed to MORTAL PERIL? That’s what I think about whenever anyone asks anyone “How are you?” these days

    111 replies 14,636 retweets 56,999 likes
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  12. Jun 29

    Neat paper on LTE crypto attacks.

    2 replies 41 retweets 54 likes
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  13. Retweeted
    Jun 29

    One again, the lack of integrity protection bites you in the ass. Unauthenticated encryption alone won't save you.

    LTE wireless connections used by billions aren’t as secure as we thought by
    1 reply 19 retweets 41 likes
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  14. Retweeted
    Jun 29
    Replying to and

    Supporting Matthew's point. Satoshi's design concept was very clear and path to sacle. This is the first response after his white paper premier about sacling

    1 reply 4 retweets 5 likes
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  15. Retweeted
    Jun 29
    Replying to

    Back in February 2018, Sen sent a letter to after media reports found that their data was not encrypted. Today’s response letter shows things were done. You can read the original letter from Sen Wyden here:

    3 retweets 16 likes
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  16. Jun 29

    Pretty sure we’re living in a bad novel.

    2 replies 1 retweet 46 likes
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  17. Jun 29

    So, um, this is pretty weird. Apparently Senator Wyden just got Tinder to properly encrypt your swipe data, so you can all get it on in private.

    17 replies 175 retweets 384 likes
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  18. Jun 29

    My flight from Montreal to Baltimore seems to have a dogleg to Phoenix.

    5 replies 9 likes
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  19. Retweeted
    Jun 27

    We just published the first draft of the Applications Track document! This draft is a work in progress and we would appreciate the community's feedback on the content of the document and what should be the next steps for the standard.

    23 retweets 35 likes
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  20. Retweeted
    Jun 29

    2. The Internet Court of Hangzhou court ruled that data stored on the blockchain is admissible as evidence in trial due to the characteristics of the tech. The facts are pretty basic: a dispute over IP/ copyright on a website.

    2 replies 46 retweets 112 likes
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  21. Jun 29

    Iota. 🙄

    Replying to @matthew_d_green @J0hndom and 7 others
    He doesn't want to confirm your words. Probably because he knows something that you don't. For example, that finding collisions doesn't mean breaking a hash function... Wanna see a trick? I'll use SHA-3 *incorrectly* and provide you with collisions for it.
    2 replies 1 retweet 12 likes
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