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Jul
30
comment How do I calculate CRC32 mathematically?
Does "A Painless Guide to CRC Error Detection Algorithms" help?
Jul
30
comment Is there a simple hash function that one can compute without a computer?
Variation: In addition to forcing every entry in the input column to be unique, also force every entry in the output column to be unique. I.e.: After writing new input on the paper, flip a quarter 8 times, writing the output on scratch paper. If the scratch 8-bit output pattern is already in the output column, to prevent collisions, repeat flipping the quarter 8 more times. When you eventually get a scratch 8-bit output pattern not already in the output column, copy it to the output column. Alas, this variant is awkward for more than 128 unique inputs, and fails after 256.
Jul
28
answered Should I use md5 for my new application?
Jul
24
awarded  Commentator
Jul
24
comment Trying to find an algorithm to share portions of a key with multiple people
In particular, there are several open-source implementations of this algorithm, such as ssss-split and ssss-combine and Life, Death, and Splitting Secrets‌​.
Jul
24
revised Relation between Threshold Cryptosystem and Secure Multiparty Computation ?
edited tags
Jul
24
answered PRNG taking advantage of very large seed
Jul
22
revised Encryption algorithm that produces dummy output on incorrect passwords
edited tags
Jul
22
revised Encryption algorithm that produces dummy output on incorrect passwords
edited tags
Jul
21
revised Is there a standard for OpenSSL-interoperable AES encryption?
one more thing ...
Jul
21
asked Is there a standard for OpenSSL-interoperable AES encryption?
Jul
21
comment Is this design of client side encryption secure?
@AndreyBotalov: It's pretty tedious to "review" (or to ask "others" to review) a JavaScript application that could potentially be different every time it is downloaded from the server, potentially downloaded several times per user per day. Is there a good way to at least check if the version of the app I downloaded today is the same as the version I and others previously reviewed yesterday?
Jul
21
revised Uncompress password protected WinRar file without password
added 960 characters in body
Jul
18
answered Uncompress password protected WinRar file without password
Jul
16
revised Looking for cryptographic secure hash algorithm(s) that produces identical root hash for differently sliced hash list
edited tags
Jul
6
answered Is this design of client side encryption secure?
Jul
6
revised How can one securely generate an asymmetric key pair from a short passphrase?
edited tags
Jul
6
revised Is this design of client side encryption secure?
edited tags
Jul
6
revised How can one share information using the 'host-proof' paradigm?
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Jul
6
revised Encryption scheme for social-network-like data sharing data via untrusted server?
edited tags