277 reputation
19
bio website
location
age
visits member for 1 year, 5 months
seen 1 hour ago

Jul
29
revised OTT service using FPE
extra details
Jul
28
asked OTT service using FPE
Jul
7
awarded  Teacher
Jul
3
comment Math to replace s-boxes - Good or bad idea?
This seems open to a timing attack... The duration of the computation may be linked to some secret data.
Jun
25
answered Encrypt-then-MAC: full random keys or keys derived from master key?
Jun
2
comment Parallel hash construction
You can build a hash the same way you build a MAC. If you look at how PMAC works you'll see why your construction is wrong and how to fix it
May
31
comment Parallel hash construction
one acronym ... PMAC
Apr
29
awarded  Yearling
Apr
24
comment Can we parallelize the Feistel Networks?
I don't think you can do that, because you need the output of a round to calculate the output of the next round , so there is no way to compute that in paralel
Apr
23
comment Encryption mode with chained algorithms
The security gain is negligible ... while the performance loss is quite large... This is not a recommended mode of encryption.
Apr
16
asked Composing hashes and/or MACs
Apr
15
awarded  Critic
Apr
15
comment Positioning of keys in encrypted text
The name of that technique is "EXTREMELY BAD"
Apr
15
comment Positioning of keys in encrypted text
What? There IS NO KEY IN THE CIPHERTEXT!!! Ever!
Apr
14
accepted Is there an algorithm to check if an elliptic curve is secure?
Apr
10
asked Is there an algorithm to check if an elliptic curve is secure?
Apr
9
comment Multi cipher CTR
yes, this would be better than breaking one cipher and that resulting in breaking the whole ciphertext
Apr
8
comment Multi cipher CTR
why silly? In order to break this, one would have to break all ciphers.
Apr
8
comment Multi cipher CTR
yes, in essence that's it
Apr
8
comment Multi cipher CTR
It's never the same block, it's the next block ...