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seen Nov 13 at 16:01

Feb
3
answered Store hashed email and compare hash values
Feb
1
comment Any efficient text-based steganographic schemes?
@Mok-KongShen: Yes, the warden can easily detect trailing whitespace -- but often trailing whitespace accidentally and innocently ends up in files I write and others as well. How can a warden detect a real covert channel without getting false positives from such innocent accidental whitespace? If the warden cannot distinguish innocent random whitespace from a real covert channel, then the steganographic channel is secure IMHO.
Feb
1
revised Any efficient text-based steganographic schemes?
add references, as requested.
Jan
29
answered Cryptographic Symmetric Stream Cipher
Jan
24
answered Any efficient text-based steganographic schemes?
Dec
16
answered Contruct a protocol to determine if three secret keys are different, without revealing any of them?
Dec
9
revised sha-1 wiki description
I hate it when people say "Don't use X", without stating some alternative.
Dec
9
suggested suggested edit on sha-1 tag wiki
Dec
9
revised Deterministic key generation
edited tags
Dec
9
comment Public key cryptography - public key encrypts and cannot decrypt?
+1 nice explanation. ArtOfTheProblem uses a similar but possibly easier-to-understand explanation in their "Public Key Cryptography: RSA Encryption Algorithm" youtube video.
Dec
6
answered How to prove membership of a list without disclosing the list members?
Dec
3
answered Is there any research on the problem of making a number more memorable to humans?
Dec
3
answered How to prove membership of a list without disclosing the list members?
Dec
3
revised How to prove membership of a list without disclosing the list members?
clarify (I hope)
Dec
2
answered How to prove membership of a list without disclosing the list members?
Dec
1
comment Software implementation of a commutative cipher?
Number of intersections of two sets gives some interesting algorithms that apparently can tell you if you have any SSNs in common, and if so, how many, without leaking any more information.
Nov
22
asked Should we sign-then-encrypt, or encrypt-then-sign?
Nov
13
comment Stretching passwords for encrypting small files
+1 for linking to a complete interoperable best-practice standard for encrypting files -- OpenPGP -- rather than mentioning one particular primitive or another, which all too often are used incorrectly or at least in unnecessarily incompatible ways.
Nov
12
revised protocol-design wiki description
example
Nov
12
suggested suggested edit on protocol-design tag wiki