5,479 reputation
2734
bio website
location Netherlands
age 40
visits member for 2 years, 11 months
seen 2 hours 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.


Sep
8
reviewed No Action Needed “Practical” operations supported by functional encryption?
Sep
8
reviewed No Action Needed Perfectly secure shift cipher
Sep
3
reviewed Close How Proof all Subgroup point of prime order elliptic curve have prime order [#G=#E]?
Aug
30
reviewed Close Good challenges for a crypto competition for teenagers
Aug
30
reviewed Close Security of very simple XOR with random?
Aug
30
reviewed Close Seemingly simple decryption question
Aug
30
reviewed Close What's the best packet cipher mode for use with UDP for example? Advantages or disadvantages of any alternatives?
Aug
30
reviewed Looks OK What is the most secure hand cipher?
Aug
10
reviewed Leave Open Theoretical attack on RSA
Aug
5
reviewed Close Where can I find source code of a compiler that secures a circuit (or attemps to)?
Aug
5
reviewed Close In symmetric searchable encryption are the algorithms public?
Aug
5
reviewed Close Minimum length of PKI key for signature
Jul
27
reviewed Reviewed Adding points on Elliptic Curves
Jul
27
reviewed Reviewed Elliptic Curve Cryptography
Jul
27
reviewed Reviewed Understanding Lattice based cryptosystem
Jul
26
reviewed Leave Open Elliptic curve group over a prime finite field $F_p$
Jul
26
reviewed Leave Open Key Derivation from random salted seed, HMAC and HMAC based KDF
Jul
20
reviewed Close Where can I begin to study the math behind modern cryptography?
Jun
20
reviewed Leave Closed RSA: Common modulus attack problem
Jun
14
reviewed Close RSA decrypting of a huge file by parts