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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. :)
Sep
15
comment What is the technical name for a public key container in DER format?
The format is PKCS#1 with PEM encoding. Your question is however off topic here.
Sep
15
comment Why would an RSA library tell me that the public key must be at least 512 bits in size?
Obviously, you can't use a 512 bit RSA key for generating sha512withRSAEncryption signatures. The restriction on key size might have to with more than just best practices.
Sep
15
answered Feasibility of finding public key when private key is known
Sep
10
awarded  Popular Question
Sep
3
comment Are SSL/TLS used for maintaining data confidentiality?
Please read the answer again. Data as a whole might not necessarily be confidential, just because it is encrypted. The hash functions are used for the message authentication codes and (in TLS 1.2 and up) for the PRF that is used e.g. for deriving bulk encryption keys. The description in the other answer crypto.stackexchange.com/a/18936/1564 is generally correct in this respect.
Sep
3
answered Are SSL/TLS used for maintaining data confidentiality?
Aug
25
reviewed Approve suggested edit on One Way function and Merkle Damgård