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seen 16 hours ago

Mar
15
answered Analogue encryption algorithms
Mar
6
awarded  Revival
Feb
28
answered Can a zero knowledge proof (or MAC) be generated from human-typable input?
Feb
22
answered Can the passphrase of a PGP key be deduced from an old backup?
Jan
24
answered ASCII to same-length ASCII encryption?
Jan
24
comment Is there a standard for OpenSSL-interoperable AES encryption?
related: "Wheres the salt on the openssl aes encryption?"
Jan
24
accepted Is there a standard for OpenSSL-interoperable AES encryption?
Jan
24
comment Impact of distinguishing between random text and cipher text?
Wikipedia: Feistel cipher currently claims that '4 rounds are sufficient to make it a "strong" pseudorandom permutation'. Is Wikipedia wrong, or am I misunderstanding Patarin or Wikipedia or both?
Jan
21
answered Asymmetric algorithm to generate compact unique messages that can be validated
Jan
21
answered Messages exchanged between Bob Alice are encrypted safe?
Jan
18
awarded  Informed
Jan
13
answered AES Algorithm processing time in Arduino vs Raspberry Pi
Jan
13
comment Convert old and busted password encryption to something sensible
related: Increase the security of an already stored password hash
Jan
12
comment Is there a simple hash function that one can compute without a computer?
related: crypto.stackexchange.com/questions/11691/…
Jan
7
awarded  Nice Answer
Jan
2
comment How does the secret key in an HMAC prevent modification of the HMAC?
@StephenTouset, by "appending data to the end", I think George is referring to a length extension attack, which is not trivial.
Dec
29
comment Salts, how does the script know what the salt is?
Yes, and often the name of the hash algorithm is also concatenated to the salt and the hash, in Modular Crypt Format or LDAP / RFC2307 format.
Dec
9
revised Alphabetic Substitution with Symbols
linkfix
Dec
3
awarded  Notable Question
Nov
25
revised Is the following symmetric design secure?
fix oops -- need a random permutation here, not a random function.