141 reputation
3
bio website
location
age
visits member for 2 years
seen Dec 11 '12 at 0:09

Android Developer, Security Professional


Jul
25
awarded  Popular Question
Sep
27
comment Why is CBC with predictable IV considered insecure against CPA
oh no, I meant knowing that a specific block of plain text corresponds to a cipher text. That was clarified by the last edit.
Sep
27
awarded  Student
Sep
27
comment Why is CBC with predictable IV considered insecure against CPA
So, aren't there 2 necessary conditions here ? 1. You are able to predict the next IV ( quite possible reading the BEAST attack with SSL) and 2. You guess the ciphertext block of a previously received message. Is the latter always possible ?
Sep
27
awarded  Supporter
Sep
26
asked Why is CBC with predictable IV considered insecure against CPA