# All Questions

379 views

### Is this how padding can work?

So for block ciphers you need a fixed size block. If the plaintext length is not a multiple of the block length then you need to pad it. One way you could do this is that for the last block you just ...
221 views

### fixing WEP by treating all messages as one long stream

in the course of introduction to cryptography on coursera professor suggested treating all messages as a long stream XORing them with the key this way we will not need to change the key and will not ...
1k views

### Are mouse movement coordinates useful as a seed for a RNG?

Is it good to use a mouse movement as a 64-bit random seed for a Pseudorandom Generator like AES in Counter Mode? Should I only need to get the X and Y coordinates of the mouse movement?
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### Cryptographical formalization of computational privacy

Yesteryears problems of communication privacy has been well defined in cryptography through Asymmetric cryptography. Due to rise in Cloud computational model , computational heavy tasks are being ...