10,784 reputation
11046
bio website vyznev.net
location Helsinki, Finland
age
visits member for 2 years, 8 months
seen 14 hours ago

I'm not really a cryptographer, I just play one on the internet.

Seriously, I'm just a programmer and mathematician interested in puzzles and information security. I don't have any kind of formal crypto training, but I've picked up a few things here and there over the years. Topics I'm particularly interested in include protocol design and analysis, classical ciphers and information-theoretically secure crypto techniques such as one time pads and secret sharing schemes.

Please consider any (original) code I post to Stack Overflow (and other Stack Exchange sites) to be released under CC-Zero unless stated otherwise. You may do whatever you want with it and don't have to credit me in any way, although of course that would be nice.


Sep
3
revised What is the progress on the MIT LCS35 Time Capsule Crypto-Puzzle?
edited tags
Sep
3
revised Time Capsule cryptography?
edited tags
Sep
3
wiki created timed-release description
Sep
3
wiki created timed-release excerpt
Sep
3
revised Is it possible to make time-locked encrytion algorithm?
retag per http://meta.crypto.stackexchange.com/questions/300/what-should-we-do-with-the-time-sensitive-tag
Sep
2
revised AES CTR with similar IVs and same key
texify, list formatting, minor copyedits
Sep
2
revised Is it possible to translate a piece of language into your own without knowing the language?
edited tags
Sep
2
comment Is it possible to translate a piece of language into your own without knowing the language?
Ps. Obligatory Wikipedia link: en.wikipedia.org/wiki/Decipherment
Sep
2
comment Is it possible to translate a piece of language into your own without knowing the language?
Although it's kind of close, I don't think this question is really on topic for Cryptography Stack Exchange. You might have better luck with it on the History or Linguistics Stack Exchange sites. (That said, if someone else thinks it's on topic here and wants to answer it, I could change my mind.)
Sep
2
answered Initialization vector in symmetric-key encryption
Sep
2
comment Initialization vector in symmetric-key encryption
Related: Encryption with “constant” initialization vector considered harmful
Sep
1
comment How to renew keys for a statically-encrypted database
Actually, I see no fundamental reason why you couldn't replace, say, the last byte in the SIV tag with a key identifier, provided that you ignored that byte when verifying message authenticity. It would slightly decrease the nominal strength of the S2V (i.e. authenticity) part of SIV, but not significantly. Of course, the resulting scheme would no longer be standard SIV, which might be a concern. (It's always nice to be able to say that you're using a standard encryption method.)
Sep
1
awarded  Synonymizer
Sep
1
reviewed No Action Needed Feedback requested on a method of posting a message without revealing the author
Sep
1
reviewed Reviewed What is the relation between hash chaining and chosen prefix attack
Aug
31
comment Why is the complexity of RSA-1024 80 bit and not 86 bit?
@user129789: Essentially, yes.
Aug
30
revised password-based-encryption wiki description
rewrite and expand
Aug
30
revised password-based-encryption wiki excerpt
rewrite and expand
Aug
30
revised random-oracle-model wiki description
rewrite and expand; deleted 5 characters in body
Aug
30
revised random-oracle-model wiki excerpt
rewrite and expand