5,479 reputation
2734
bio website
location Netherlands
age 40
visits member for 2 years, 11 months
seen 35 mins ago

Security professional with many years of experience with the practical application of cryptographic algorithms and protocols. I'm helping with the design of protocols and API's within international standardization bodies. Lead developer of a common criteria certified product. Over 30 years of general experience with computers.

On crypto I mainly answer less mathematically inclined questions, leaving security proofs to the theoretical cryptographers and analysts.


Nov
19
answered AES - Encrypting multiple blocks of files
Nov
19
answered Encryption of big files in Java with AES/GCM
Nov
18
answered Is the output of AES-CBC + MAC the same size as the input?
Nov
17
answered what does rsaSha512Sign do?
Nov
12
answered Blowfish ECB mode: Tools for known-plaintext attack?
Nov
12
asked What is the use of segments in Cipher Feedback Mode (CFB)
Nov
11
answered Can RSA signing be implemented on top of RSA encryption/decryption?
Nov
10
answered Are modified implementations of cryptographic algorithms a good idea?
Nov
7
asked Which attacks are possible against raw/textbook RSA?
Nov
5
answered Crytosystems used to generate public key certificate
Nov
3
asked NRPAD and FPAD padding schemes (Korean Seed?)
Nov
2
answered Is python a secure programming language for cryptography?
Nov
2
answered How can a good encryptor be made?
Nov
2
answered Can public key be recovered from chipher text & encrypted private key?
Oct
30
answered Encrypting twice with same key gives back plain text
Oct
25
answered How secure is a lagged fibonacci sequence for encrypting brief messages?
Oct
25
answered Use case of RSA CRT
Oct
24
answered Does the size of a SSH ECDSA key determine the hash algorithm?
Oct
24
answered What can be learned from the ciphertext of LibSodium's crypto_box_detached()?
Oct
23
answered Secure way to derive separate encryption and MAC keys from a single master key?