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Jul
8
comment How is this affine function a pair wise independent permutation?
Can you post the definition of pairwise independent permutation?
Jul
2
awarded  Curious
Jun
27
comment RSA example-calculation: Public Key = Private Key (e = d)
@poncho, thanks! Updated accordingly. I always forget about $\lambda$ when thinking about RSA.
Jun
27
revised RSA example-calculation: Public Key = Private Key (e = d)
deleted 13 characters in body
Jun
27
reviewed Leave Open Is HMAC needed for a SHA-3 based MAC?
Jun
27
reviewed Leave Open Cryptography: Oblivious Transfer with at most one transfer?
Jun
27
reviewed Leave Open Large text file encryption per line
Jun
27
reviewed Leave Open Public Key Cryptography: Diffie-Hellman Key Exchange
Jun
26
comment How to decrypt 3DES in ECB mode (using a wordlist)?
@evachristine I know you really, really want us to tell you a piece of software to do this for you, but software recommendations are off-topic on this site.
Jun
26
comment RSA example-calculation: Public Key = Private Key (e = d)
@tylo maybe these two represent classmates separated by a year in school :)
Jun
26
comment What is Attribute Based Encryption?
@sashank, one of the big benefits of ABE is that the attributes are public, and if you possess the attribute, you can get the private key associated with it. Thus, anyone can encrypt with the attributes, but only one who possesses them can decrypt. Symmetric ABE would say that only one who possesses the attributes can encrypt with them. If that is the functionality you need, you can get that with an attribute-based signcryption scheme.
Jun
26
comment Combining Random Hashes - avoiding collisions and ensuring randomness
@Navonod, which are you more concerned about, speed or security?
Jun
26
revised Large text file encryption per line
edited body
Jun
26
answered Large text file encryption per line
Jun
26
comment Large text file encryption per line
cleaned up some old comments Thanks for updating.
Jun
26
answered RSA example-calculation: Public Key = Private Key (e = d)
Jun
25
comment Is entropy affected by time?
mostly just thinking out loud here, but how does this change given the fact that a truly fair dice does not exist? If an attacker can model that not-truely fair dice with more fidelity over time, the entropy does go down, right?
Jun
25
comment RSA example-calculation: Public Key = Private Key (e = d)
No mistake. A number can be it's own inverse. Just pick a different $e$.
Jun
24
revised How come Shamir Secret Sharing uses Lagrange interpolation?
deleted 10 characters in body
Jun
24
comment Paillier can add and multiply, why is it only partially homomorphic?
That site is somewhat confusing. C is not encrypted, there is no encrypt button. Paullier can add cithertexts, but only multiply by a plaintext.