CodesInChaos

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5,964 reputation
1927
bio website github.com/CodesInChaos
location Munich, Germany
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visits member for 1 year, 10 months
seen 8 hours ago
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Sep
18
 revised Why do public keys need to be validated?
deleted 2 characters in body
Sep
18
 asked Why do public keys need to be validated?
Sep
16
 revised Dimension of Encryption of a linearly dependent set of plaintexts
improved formatting
Sep
14
 revised BouncyCastle Elliptic Curve implementation
deleted 64 characters in body
Sep
14
 revised How to decrypt AES in CBC
added 32 characters in body
Sep
13
 comment Is there a method to break an EC curve for all key-pairs (Q,d) such that (Q=d*G) faster than breaking every single key-pair?
The problem with this is that you're assuming separate pre-calculation and lookup phases. A single phase multi-target attack is an important scenario too, where you simply want to crack one of a million known public keys. I believe the gain in that scenario is still rather small, but it exists.
Sep
13
 revised Structure of encrypted office files
deleted 35 characters in body
Sep
12
 reviewed Approve suggested edit on PBKDF2 and salt
Sep
12
 comment How to encrypt data and know it will be secure for at least a few decades?
tahoe-lafs.org/trac/tahoe-lafs/wiki/OneHundredYearCryptography
Sep
8
 revised Is it safe to use file's hash as IV?
added 1 characters in body
Sep
8
 revised Is it safe to use file's hash as IV?
added 176 characters in body
Sep
8
 answered Is it safe to use file's hash as IV?
Sep
8
 comment Can I combine two of SHA-3 candidates cryptography hash functions and obtain more secure Algorithm?
What are you using the hash function for? Only integrity checking? Then concatenating the hashes should work. (Obviously makes the hash longer)
Sep
7
 revised find solutions that solve the equations
added 8 characters in body
Sep
7
 revised find solutions that solve the equations
added 10 characters in body
Sep
7
 revised find solutions that solve the equations
added 78 characters in body
Sep
7
 comment find solutions that solve the equations
@blejzz The best increase would be 1. You simply want to try the smallest $Y$s first, since those have the highest success chance.
Sep
7
 revised find solutions that solve the equations
added 150 characters in body
Sep
7
 revised find solutions that solve the equations
added 150 characters in body
Sep
7
 comment find solutions that solve the equations
Do you have a typo in the condition for $Z$? The $*Z>Z$ part is weird.
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