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Thomas Pornin

Quebec City, Canada

http://www.bolet.org/~pornin/

Cryptographer, programmer in several languages (C, Java, several assemblies, Pascal, Forth...). I also have a life.

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Top Questions
Top Answers
1210
How to securely hash passwords?
security.stackexchange.com

697
How does SSL/TLS work?
security.stackexchange.com

673
Do any security experts recommend bcrypt for password storage?
security.stackexchange.com

604
CRIME - How to beat the BEAST successor?
security.stackexchange.com

569
What's the difference between SSL, TLS, and HTTPS?
security.stackexchange.com

565
XKCD #936: Short complex password, or long dictionary passphrase?
security.stackexchange.com

520
Is it safe to ignore the possibility of SHA collisions in practice?
stackoverflow.com

494
Are passwords stored in memory safe?
security.stackexchange.com

438
Execution time of C program
stackoverflow.com

420
How is it possible that people observing an HTTPS connection being established wouldn't know how to decrypt it?
security.stackexchange.com

365
How does SSL/TLS work?
security.stackexchange.com

341
Amount of simple operations that is safely out of reach for all humanity?
security.stackexchange.com

274
Recommended # of iterations when using PBKDF2-SHA256?
security.stackexchange.com

270
SSL3 "POODLE" Vulnerability
security.stackexchange.com

263
Is a rand from /dev/urandom secure for a login key?
security.stackexchange.com

253
Comparison of DES, Triple DES, AES, blowfish encryption for data
stackoverflow.com

239
How do certification authorities store their private root keys?
security.stackexchange.com

239
What is DROWN and how does it work?
security.stackexchange.com

238
Is there anything preventing the NSA from becoming a root CA?
security.stackexchange.com

225
Difference between .pfx and .cert certificates
security.stackexchange.com

220
What is the difference between SSL vs SSH? Which is more secure?
security.stackexchange.com

216
Is SHA-1 secure for password storage?
stackoverflow.com

211
Difference Between OAUTH, OpenID and OPENID Connect in very simple term?
security.stackexchange.com

181
Why most people use 256 bit encryption instead of 128 bit?
security.stackexchange.com

175
Why are programs written in C and C++ so frequently vulnerable to overflow attacks?
security.stackexchange.com

169
How to determine what type of encoding/encryption has been used?
security.stackexchange.com

166
What is the "Random Oracle Model" and why is it controversial?
crypto.stackexchange.com

164
Why is elliptic curve cryptography not widely used, compared to RSA?
crypto.stackexchange.com

160
Is there any particular reason to use Diffie-Hellman over RSA for key exchange?
security.stackexchange.com

158
What kinds of encryption are _not_ breakable via Quantum Computers?
security.stackexchange.com

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