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Oct
14
revised How can a random salt for a hash function work in practice?
better title, some punctuation
Oct
14
revised How to provide secure “vanity” bitcoin address service?
some more arguments about number of iterations, partly from nealmcb's comment.
Oct
14
revised How to provide secure “vanity” bitcoin address service?
adding optimization from comment by Nakedible
Oct
14
revised How to provide secure “vanity” bitcoin address service?
formatting
Oct
14
revised How were the DES S-box values determined?
add information from comments
Oct
14
comment AES in ECB mode weakness
The main problem with ECB mode is that identical plaintext blocks (encrypted with the same key) always result in identical ciphertext blocks (and different ones result in different ones). Could this be a problem in your case?
Oct
13
revised Key Length & Hashing
adding information from the comments, adding links
Oct
13
revised Strength of multiple hash iterations?
formatting fixes
Oct
13
revised Key Length & Hashing
edited tags
Oct
12
comment What is the general justification for the hardness of finding preimages for cryptographic hash functions?
@EthanHeilman I think confusion and diffusion is the best argument for symmetric crypto (i.e. hashes, block ciphers and stream ciphers).
Oct
12
comment What is the general justification for the hardness of finding preimages for cryptographic hash functions?
This only says if SAT is easy (i.e. P=NP), then all hash functions are broken, not the other way around (if SAT is hard, then hash functions are good).
Oct
12
revised Does the generator size matter in Diffie-Hellman?
adding information from the comments
Oct
12
revised How to attack a classical cipher using known partial plaintext?
line breaks for the cipher text
Oct
12
comment Strength of multiple hash iterations?
Some more discussion is here: Webapp password storage: Salting a hash vs multiple hashes?
Oct
12
revised Is it feasible to build a stream cipher from a cryptographic hash function?
adding disclaimer
Oct
12
answered Strength of multiple hash iterations?
Oct
12
revised RIPEMD versus SHA-x, what are the main pros and cons?
tag, wording
Oct
12
revised Is there an algorithm or hardware that can sign/verify natural time?
word order
Oct
12
awarded  Civic Duty
Oct
12
revised Are there reference implementations of ECQV implicit certificates?
inline the link