67 reputation
7
bio website
location Brussels, Belgium
age 24
visits member for 2 years, 5 months
seen Jun 27 at 12:01

I think that I shall never see. A graph more lovely than a tree.


Jun
6
comment Why is verification using DSA slower than verification with RSA?
@HenrickHellström: Thank you for the response.
Jun
6
comment Why is verification using DSA slower than verification with RSA?
A quick follow up, is there a big difference in authentication and verification complexity between RSA with a 1024 modulus and a 2048 modulus?
May
31
comment What do recent announcements about solving the DLP in $GF(2^{6120})$ mean for RSA
Thanks for the very clear explanation!
May
28
comment Why is verification using DSA slower than verification with RSA?
Thanks you for the response and the clear answer!
Apr
16
comment May the problem with DES using OFB mode be generalized for all feistel ciphers
Thank you for the additional information!!
Apr
16
comment May the problem with DES using OFB mode be generalized for all feistel ciphers
Yes, ive updated the original response.
Apr
10
comment May the problem with DES using OFB mode be generalized for all feistel ciphers
Sorry for my late reaction. Thank you for answer my question!
Apr
8
comment May the problem with DES using OFB mode be generalized for all feistel ciphers
Thanks for the response! But with DES, if i encrypt P1 with $k$ i get C1, if i encrypt C1 with $k$ agian, i get back P1? Or only when DES is used with "weak keys"?
Apr
8
comment May the problem with DES using OFB mode be generalized for all feistel ciphers
Thank you for the response! The reverse operation in the feitel network is for OFB a "blackbox". But reversing the subkey is a property of the feistel network, you have to be able to decrypt back? The problem here is using a feistel cipher on OFB-mode and how it "leaks" information.
Apr
8
comment May the problem with DES using OFB mode be generalized for all feistel ciphers
Yes, very true. Let me fix that.
Apr
7
comment PBKDF2 when dkLen and hLen have the same size
Thank you for the quick and clear response!