Cryptography
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89 Answers

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95
Time Capsule cryptography?
Sep 3 '11 at 14:31
35
Are there two known strings which have the same MD5 hash value?
Jan 30 '12 at 16:53
31
Random oracle model proofs and programmability
Dec 8 '11 at 17:37
20
ElGamal: Multiplicative cyclic group and key generation
Jan 5 '12 at 17:14
19
How to fairly select a random number for a game without trusting a third party?
Sep 24 '11 at 0:34
17
Can Elgamal be made additively homomorphic and how could it be used for E-voting?
Aug 24 '12 at 14:08
16
Is H(k||length||x) a secure MAC construction?
Nov 14 '11 at 20:15
15
Definition of textbook RSA
Dec 12 '11 at 20:10
15
Are there asymmetric cryptographic algorithms that are not based on integer factorization and discrete logarithm?
Jul 19 '11 at 15:24
14
advances in usability for cryptography/authentication
Jul 13 '11 at 15:25
13
Division in paillier cryptosystem
Mar 13 '12 at 3:35
12
Bitcoin Research
Sep 5 '12 at 19:43
12
What is the importance of Modular arithmetic in cryptography?
Dec 12 '11 at 15:08
12
Is there an algorithm or hardware that can sign/verify natural time?
Oct 12 '11 at 15:23
12
Replacing the Rijndael S-Box?
Jul 13 '11 at 18:39
11
Why is RSA encryption key based on modulo $\varphi(n)$ rather than modulo $n$?
Feb 1 '12 at 14:50
11
Is it possible to validate a Public Key in RSA?
Jan 10 '12 at 15:10
11
How to attack a classical cipher using known partial plaintext?
Oct 12 '11 at 16:10
11
Why use a 1-2 Oblivious Transfer instead of a 1 out of n Oblivious Transfer?
Jul 13 '11 at 17:22
10
Guarding against cryptanalytic breakthroughs: combining multiple hash functions
Jul 29 '11 at 16:11
9
Proving knowledge of a preimage of a hash without disclosing it?
Jan 30 '12 at 1:49
8
Provable Encryption
Jan 26 '12 at 15:15
8
Approach towards anonymous e-voting
Aug 14 '12 at 16:30
8
Salts, how does the script know what the salt is?
Jan 30 '12 at 2:11
8
Why is MixColumns omitted from the last round of AES?
Nov 29 '11 at 16:36
8
Why do we need special key-wrap algorithms?
Nov 1 '11 at 14:47
8
Applications of Group Ciphers
Aug 12 '11 at 14:48
7
Can you help with that definition for a CCA?
Nov 20 '11 at 16:01
7
Are there any differences between PIR, oblivious transfer and differential privacy?
Jun 18 '12 at 14:11
7
Would it be secure to use random numbers from random.org in a cryptographic solution?
Jan 11 '12 at 15:46
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