1,343 reputation
417
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location Saarbrücken, Germany
age 27
visits member for 2 years, 9 months
seen 15 mins ago

May
21
revised One-time pad, zero key and Shannon
Added a bit more explanation, why this is a valid argument.
May
6
revised Is G is a secure PRG?
added 26 characters in body; edited tags
Mar
18
revised Why concatenate the key a second time in HMAC?
added 9 characters in body; edited tags
Feb
21
revised Prove that two MACs with incremendal PRF application are not secure
fixed index of key
Nov
26
revised How can Shamir's method for secret sharing work in the GF(256)?
edited body
Jun
8
revised Is symmetric key encrypted with server's public key secure
edited tags
May
13
revised Why is the following RSA PRNG cryptographically secure?
fixed the formulas
May
7
revised Indistinguishability attack example
added 8 characters in body
May
6
revised Indistinguishability attack example
Cleaned up the question
Feb
25
revised Chosen Plaintext Attacks against an Affine Cipher
edited tags
Jan
28
revised What are the differences between proofs based on simulation and proofs based on games?
edited tags
Dec
13
revised Can one have an authentic, but repudiable, message without a previously shared secret?
added 494 characters in body
Nov
25
revised Looking for examples for “proof by reduction”
added s indicating that H_s is a member of a function family
Jul
10
revised Can we trust digital signatures?
Tried to make the question more readable
Jun
27
revised What is the advantage of an attacker over breaking a 4 digits PIN?
added 244 characters in body
Jun
25
revised How much computing resource is required to brute-force RSA?
forgot to divide by 2
Jun
18
revised Digital Signatures, Standard Hash Functions and MACs
typo
Jun
15
revised How can the Schmidt–Samoa cryptosystem uniquely decrypt large messages?
edited body
Jun
12
revised What's the fundamental difference between Diffie-Hellman and RSA?
Changed the question to match the answer.
Jun
12
revised Looking for cipher that uses one ciphertext
added 212 characters in body