11d060a946665fb769d865f4bbb48c

less info
67 reputation
7
bio website
location Brussels, Belgium
age 24
visits member for 1 year, 8 months
seen Mar 25 at 6:12

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


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
awarded  Editor
Apr
8
revised May the problem with DES using OFB mode be generalized for all feistel ciphers
added 35 characters in body
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
8
asked May the problem with DES using OFB mode be generalized for all feistel ciphers
Apr
7
awarded  Scholar
Apr
7
comment PBKDF2 when dkLen and hLen have the same size
Thank you for the quick and clear response!
Apr
7
accepted PBKDF2 when dkLen and hLen have the same size
Apr
7
asked PBKDF2 when dkLen and hLen have the same size
Dec
30
awarded  Autobiographer