The ofb tag has no wiki summary.
-2
votes
2answers
117 views
May the problem with DES using OFB mode be generalized for all feistel ciphers
There is a problem with using DES as the block cipher in OFB mode, eg: the feedback that goes back into the next round will be encrypted with the same key $k$ resulting back into the plaintext IV used ...
2
votes
3answers
80 views
How comparable is OFB to a one-time pad?
This is a rather trivial question, I just want to see if I get the concept right.
In OFB you generate a pseudorandom stream based on some nonce, and you XOR that with the message to get the ...
0
votes
2answers
201 views
Is the Blum Blum Shub PRNG suitable to create initialization vectors?
Is it a good idea to use a Blum Blum Shub Generator to create my initialization Vector (IV) in AES-OFB (Output Feedback Mode)?
0
votes
1answer
90 views
Probability of Repeated Encrypted Block In Output Feedback (OFB) Mode
Is there any probability/chances of repeated encrypted block in Output Feedback (OFB) mode?
Is there any existing documentation/studies about that? If it is existing, can you please provide me a link ...
2
votes
2answers
300 views
Capacity of Advanced Encryption Standard in terms of File Encryption
what is the capacity of AES in terms of File Encryption?
is it really good to encrypt a large files in AES? ex. I am encrypting a 8GB of File... is it still good to used AES?
is it still good to used ...
1
vote
4answers
400 views
Is my pseudo-random initialization vector secure?
How can I know if I am generating a secure pseudorandom initialization vector?
Currently I am planning to generate a pseudo-random initialization Vector using current date and time - is this secure ...
1
vote
3answers
434 views
Which attacks can be avoided by the use of OFB instead of ECB?
For a file encryption program, I was told to use Output Feedback mode (OFB) instead of ECB (Electronic code book) mode.
Which attacks can I avoid by this choice?
1
vote
2answers
242 views
Complexity of ECB and OFB
What is the complexity of ECB in terms of Time and Memory?
and also in OFB? I can't find it in the internet, so I decided to ask it in here.
2
votes
1answer
260 views
How does Output Feedback mode use the initialization vector?
How can I process Initialization Vector inside the Block Cipher Encryption box (using for example AES) together with the Key?
Will I encrypt the Initialization Vector like a block of plaintext?
So ...
