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Dec
26
comment Prime Numbers in Discrete Log
You have chosen the tag "dsa", but there is no mention of digital signatures in your question. Do you need primes for Diffie-Hellman or for a signature scheme?
Dec
26
answered Prime Numbers in Discrete Log
Dec
26
reviewed Close Which Block cipher mode should I use?
Dec
26
reviewed Close What is Initialization vector (IV)
Dec
26
comment Which Block cipher mode should I use?
Define "secure".
Dec
18
awarded  Nice Question
Dec
15
comment What is difference between PRG, PRF, and PRP
Well, a poly-time observer has a relatively realistically good shot at distinguishing a few TB of a AES-CTR stream from a HMAC-MD5-stream, but not at distinguishing AES with a random key from a random permutation.
Nov
18
awarded  Enlightened
Nov
18
awarded  Nice Answer
Nov
17
comment Key generation in Digital Signature Algorithm
The exact algorithm for generating the primes is specified in the DSS NIST FIPS 186-4 nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.186-4.pdf
Nov
15
comment Why we can't implement AES 512 key size?
"since AES-128 is safe enough for anything foreseeable" ...except when the cryptosystem is re-keying sufficiently frequently for collisions in the key space to become a concern.
Oct
18
revised Encrypting twice with different modes?
added 691 characters in body
Oct
16
answered Encrypting twice with different modes?
Oct
3
comment What does OIW stand for
books.google.se/…
Oct
3
comment What does OIW stand for
Open System Implementors Workshop alvestrand.no/objectid/1.3.14.html
Sep
30
awarded  Explainer
Sep
23
comment Is it possible to find out whether a number is greater than another number without knowing the numbers?
Do you need to compare each number in a pair only once, or multiple times?
Sep
22
comment Is it possible to hand-negotiate an SSL/TLS session?
No, it is not feasible or even theoretically possible to connect to a server on 443 and type yourself through an entire SSL handshake.
Sep
15
comment What is the technical name for a public key container in DER format?
If it's not a plain PKCS#1 RSAPublicKey, it is probably a SubjectPublicKeyInfo from PKIX/X.509
Sep
15
comment What is the technical name for a public key container in DER format?
Well, you don't have to take my word for it. All you have to do is to implement a Base64 decoder, an ASN.1 parser, a DER parser and see for yourself, just like I did. :)