fgrieu

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I'm an engineer with experience in applied cryptography, in particular in Smart Card systems.


203 Answers

newest activity votes
4
Increased CRC collision probability when adding bits to input message
may 12 at 21:22
4
What's the difference between AES and earlier block ciphers?
may 5 at 14:15
4
toy hash algorithm
may 1 at 19:20
4
SHA256 HMAC brute force with chosen plaintext attacks
apr 23 at 17:27
4
Even passwords are vulnerable to hash collision attacks?
mar 20 at 10:52
4
Is Truecrypt's multiple/cascading encryption safe?
feb 27 at 7:44
4
Which one is fastest? Karatsuba or Montgomery multiplication?
feb 25 at 13:31
4
Generate random number which should depend on key
feb 5 at 23:41
4
Number of states in a LFSR
dec 13 at 15:50
4
RSA Without Padding?
dec 6 at 21:31
4
Safety of DSA key parameters sharing
nov 27 at 17:11
4
Word-based stream ciphers vs “regular” stream ciphers?
nov 14 at 17:03
4
Is there an algorithm for factoring N, which is just as simple as this one, but faster?
oct 28 at 8:34
4
How many keys does the Playfair Cipher have?
sep 18 at 11:44
4
Why should the RSA private exponent have the same size as the modulus?
jul 18 '12 at 21:47
4
Does a high exponent compensate for a low degree of certainty?
jul 2 '12 at 21:39
4
Why are MACs in general deterministic, whereas digital signature constructions are randomized?
may 29 '12 at 17:19
4
Is quantum key distribution safe against MITM attacks too?
may 27 '12 at 9:12
4
In which situations is a length-extension attack a problem?
apr 26 '12 at 21:05
4
Cryptographically strong pseudo-random seq. generators
apr 2 '12 at 6:11
4
What is the PRG period of stream ciphers such as RC4 or Salsa20?
mar 25 '12 at 21:03
4
Does RSA padding have to be unpredictable if the payload is?
feb 3 '12 at 14:11
4
Is HMAC-DRBG or Hash-DRBG stronger?
dec 2 '11 at 8:17
4
How to require two keyholders to decrypt a document?
oct 24 '11 at 18:22
4
Strength of multiple hash iterations?
oct 12 '11 at 18:42
4
How to fairly select a random number for a game without trusting a third party?
sep 24 '11 at 11:21
4
Looking for cryptographic secure hash algorithm(s) that produces identical root hash for differently sliced hash list
aug 23 '11 at 7:52
4
Known methods for constant time (table-free) AES implementation using 'standard' operations?
aug 19 '11 at 16:06
3
Does collision resistance stay when extending a hash function to a set domain?
jun 6 at 22:08
3
How can I split a message in parts of similar size or smaller?
jun 5 at 19:12
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