Matthew Green

@matthew_d_green

I teach cryptography at Johns Hopkins.

Baltimore, MD
blog.cryptographyengineering.com
Joined January 2010
1,182 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 )

    19 replies 192 retweets 407 likes
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  2. Retweeted
    Aug 23

    anyone know if Napster is having downtime? I can't connect.

    41 replies 309 retweets 1,414 likes
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  3. Retweeted
    1 hour ago

    WhatsApp Warns Free Google Drive Backups Are Not Encrypted

    20 retweets 11 likes
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  4. Retweeted
    25 Oct 2016
    Replying to

    We only think driving is easy because our minds hardware-accelerate so much of it. In reality, it is literally complex beyond description./7

    11 replies 45 retweets 144 likes
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  5. Retweeted
    5 hours ago

    Overheard: "there should be a word for when you ask someone a question and their first response is to set signal disappearing messages time to 5min"

    11 replies 30 retweets 171 likes
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  6. Retweeted
    19 hours ago

    Fascinating story. A dispute between two groups of scientists ran for years because one had done simulations using buggy software that they didn't release with their paper. My conclusion: if the software isn't public, the paper shouldn't be published.

    7 replies 126 retweets 230 likes
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  7. 21 hours ago

    I’ve got an awesome idea, let’s label the RSA factoring challenges with the number of *decimal* digits rather than the number of bits, just in case some fourth graders want to tackle them by hand.

    1 reply 4 retweets 27 likes
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  8. Retweeted
    23 hours ago

    Good news, everyone. now acknowledges that Russian military may very well have hacked their way into DNC assets and that the huge preponderance of evidence to this effect isn't just some deep state psyop. Our long national nightmare is over. Good night and good luck.

    56 replies 83 retweets 367 likes
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  9. Retweeted
    Aug 27

    Real world SSD wearout

    2 replies 26 retweets 53 likes
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  10. Retweeted
    Aug 27

    New Linux Kernel feature to distrust CPU’s Random Number Generator, that may have been compromised by “Nation State’s Intelligence or law enforcement agencies”

    , , and 6 others
    20 replies 427 retweets 757 likes
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  11. Aug 27

    “Our voting machines can’t be hacked. Also, there may be foreign hackers hacking them at DEFCON.”

    New: Facing congressional pressure to allow independent testing of its voting machines, major vendor ES&S urges lawmakers to investigate "the presence of foreign adversaries" at DEF CON's and similar events.
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    11 replies 70 retweets 218 likes
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  12. Retweeted
    Aug 27

    Crack authKey from SNMPv3 packet

    2 replies 43 retweets 67 likes
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  13. Retweeted
    Aug 27

    Back to CH. was fun. My top 3 papers: - VDFs - Non-Interactive Zero-Knowledge Proofs for Composite Statements - Updatable and Universal Common Reference Strings with Applications to zk-SNARKs

    1 reply 15 retweets 42 likes
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  14. Retweeted
    Aug 10

    So we have either a surprisingly hardy crop of voters born under President John Adams or we have ... super-fucking-obvious data entry artifacts! I wonder which one it is!

    3 replies 93 retweets 1,050 likes
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  15. Retweeted
    Aug 25

    We’re hiring and here’s more than you want to know about how we do that.

    2 replies 24 retweets 56 likes
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  16. Retweeted
    Aug 24

    Whoops

    119 replies 6,736 retweets 16,383 likes
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  17. Retweeted
    Aug 25

    John McAfee, Security Expert

    82 replies 543 retweets 1,816 likes
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  18. Retweeted
    Aug 25
    Replying to

    Yes, it's possible. Reducing future inflation via SF is easy. To increase effective future inflation, specify a new rule that reduces the spending power of all outputs in txs prior to a given block height, if used as inputs in txs included after it.

    1 reply 1 retweet 5 likes
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  19. Aug 25

    Let me be more clear. Let’s say an overwhelming majority of the BTC userbase wanted to change the monetary policy, but they were committed to updating the network only through soft forks.

    8 replies 8 likes
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  20. Aug 25

    This is serious work, but I couldn’t make it through the abstract without giggling.

    9 replies 9 retweets 47 likes
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  21. Aug 25

    Is it actually impossible to change BTC monetary policy through soft fork(s)?

    10 replies 4 retweets 14 likes
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