101 reputation
3
bio website cybergeneration.com
location Mascouche, Canada
age 34
visits member for 1 year, 7 months
seen Jun 14 at 1:37

Currently principal developer of Cyberimpact (white hat mass mailing web app) at Cyber Generation. Expertise in

  • PHP
  • CodeIgniter
  • SQL Server, TSQL
  • PostgreSQL
  • Regex
  • javascript, AJAX, jQuery, prototype.js
  • Classic ASP (no comments...)

Jul
18
awarded  Citizen Patrol
Jun
26
comment How can I do a brute force (ciphertext only) attack on an CBC-encrypted message?
Great, I expected such an answer, I just wanted to clarify ;-) But I'm more interested in that "double encryption" scenario. In my understanding, it's impossible to know we got the right "first key" in a brute force attack if the plaintext was encrypted twice (with different ciphers and keys). The brute force attack should perform the two decryptions (with two keys) and then evaluate if it found the plaintext. Am I right ?
Jun
26
comment How can I do a brute force (ciphertext only) attack on an CBC-encrypted message?
­@Ilmari Karonen Ok, now what if the "plaintext" is not actually text, but a file of unknown type (image, music, etc.) or even an other ciphertext (using an other cipher for instance), it would be indistinguishable from random noise, so impossible to guess it's the "plaintext" we've got ?
Apr
25
awarded  Supporter
Dec
15
awarded  Autobiographer