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Re:Ask HN: Recommendations for Learning TCP/IP?
on Tuesday July 07, 2020 @01:53PM (#23762015)
Computer Networks - A Top Down Approach by Kurose Ross gives a very good overview of computer networks and dives deep into each of the layers of the networking stack.
Re:Ask HN: Do you still use reddit.com?
on Sunday June 07, 2020 @06:42AM (#23446346)
I found that reddit has grown some very nice communities around topics I care about. As long as I try just a little bit to avoid the distractions that other subreddits bring, it gives great value.
Some subreddits I joined are
r/compsci
r/linux
r/programminglanguages
Re:Why Telegram is insecure (2015)
on Sunday January 06, 2019 @10:16AM (#18838703)
MtProto has since been changed to satisfy IND-CCA requirements: https://core.telegram.org/techfaq#what-about-ind-cca
Re:Why Telegram is insecure (2015)
on Sunday January 06, 2019 @08:14AM (#18838141)
They were, actually. MtProto v2 satisfies IND-CCA now as opposed to what the blog post claims: https://core.telegram.org/techfaq#what-about-ind-cca
Re:Why Telegram is insecure (2015)
on Sunday January 06, 2019 @07:06AM (#18837928)
What I find interesting is that this article is very recent, however the calculations on Crypto are not up to date. MtProto has had some big changes some time ago already:
- SHA-256 is used instead of SHA-1;
- Padding bytes are involved in the computation of msg_key;
- msg_key depends not only on the message to be encrypted, but on a portion of auth_key as well;
- 12..1024 padding bytes are used instead of 0..15 padding bytes in v.1.0.