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Jul
28
answered Vigenère cipher: Security when key length and plaintext length are the same
Jul
15
answered Leak-proof protocol: is such a thing possible?
Jun
23
answered Choose a random number that is different from a bunch of other secret numbers
Jun
23
answered How to prove NIZK proof of knowledge?
Jun
11
answered Given $n$ bits, how many “truly random” sequences/numbers can be constructed?
Jun
6
answered Multiplication-homomorphic schemes
Jun
3
answered One Time Pad for large changing files
May
23
answered weaknesses in ElGamal with public key of small order
May
19
answered How exactly are PRNG's used to encrypt material, and what makes one any more secure than the other?
May
15
answered Shamir's secret sharing scheme - type of channels
Apr
16
answered Existence of a map $\phi:\mathbb{Z}_{N^2}^* \mapsto \mathbb{F} $
Apr
15
answered Is there a simple zero knowledge proof of $x$ for $b=x^x\pmod p$?
Apr
14
answered In Pedersen Key Distribution, can the public key be persistent?
Apr
14
answered How to make sure the pre-agreed information safe for DH-Key Exchange
Mar
27
answered Times of nested algorithms in proofs of security
Mar
25
answered Construct an encryption algorithm using hash function
Mar
24
answered Third-party security issues with Shamir's secret sharing scheme
Mar
20
answered Hash Function to get same value for different messages
Mar
20
answered Decrypting Triple-DES using 2 keys in crypto tools
Mar
20
answered How to solve custom made ciphers?