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Nov
17
revised How does GPG verify succesful decryption?
fix typo
Nov
10
revised What does $\mathbb Z_p^*$ contain?
formatting, better tag
Nov
10
comment Opinion on my idea for storing credit cards securely
Welcome to Cryptography Stack Exchange. How would a user "provide his private key"? I guess usual users can memorize their credit card data easier than they can memorize a private key.
Nov
7
revised What is the value of Q such that Q|P-1 where P is a prime number?
edited tags
Nov
7
comment Crypto-Compression Algorithms?
@Habib: The size of the message space doesn't change by compression, assuming you are using lossless compression (i.e. compression which can be reverted). You just change the encoding of it to a form which is on average shorter.
Nov
4
revised Why to try get key out of white box crypto? How can one protect WBC itself?
formatting
Nov
2
comment How to figure out the size of the output of a cryptographic checksum function
Welcome to Cryptography Stack Exchange. It looks like your question is actually to be answered in exercise 20 – the text before it doesn't really explain it.
Nov
2
revised How to figure out the size of the output of a cryptographic checksum function
formatting
Nov
1
revised How can a good pseudo-random number generator be made?
typos, formatting
Oct
28
revised Is there any probabilistic version of RSA?
a bit more on key randomization
Oct
28
revised Is there any probabilistic version of RSA?
add a note on the key randomization
Oct
28
answered Is there any probabilistic version of RSA?
Oct
21
awarded  Enlightened
Oct
21
awarded  Nice Answer
Oct
12
comment Block Cipher Modes
@DrLecter actually, with CBC you can parallelize the decryption, just not the encryption.
Oct
11
revised How does MD5 process text which is shorter than 512 bits
added 7 characters in body
Oct
10
revised How does a chosen ciphertext attack work, with a simple example?
remove the "there is no such thing", as it comes from before the migration.
Oct
6
comment What does “nonlinear mapping” mean?
Welcome to Cryptography Stack Exchange. After your edit, it seems that we only can say "yes" or "no" (and I would say "yes"). Maybe you could move the answering part (after the sentence "I'm not sure if I understand this correct") into an actual answer?
Oct
6
comment Is there a string that's hash is equal to itself?
A rotation itself doesn't prevent things mapping to itself, e.g. (on a byte-level) rotating 11111111 by any amount still gives 11111111.
Oct
6
comment Skein or Keccak stream cipher construction
The stream cipher part is essentially counter mode with a hash function.