Recherche dans le site/ Search this Blog:

Login



Encrypted VBR VoIP Leaks Information Imprimer
Écrit par I Don't Believe in Imaginary Property   

Researchers have found that encrypted VoIP calls that use variable bit rates leak a substantial amount of information, enough that they were able to identify the language spoken without being able to decrypt the packets.


 

In their paper (PDF), they detail how they were able to deduce all this from the fact that VBR prevents the encryption from hiding the length of the plaintext, and thus their program was able to get a 14-fold improvement over random guessing. This will, no doubt, be of great interest to any governments which have expensive ways of brute forcing the encryption and want to prioritize which encrypted calls they crack.

Ajouter votre commentaire / Add your comment

Votre nom / Your name:
Sujet / Subject:
Commentaire:
SPAM: Ne pas inclure de lien ou utiliser le stratagème suivant: "yahoo.com slash mapage.html"     Nous utilisons un filtre qui bloque les commentaires suspects avec une erreur 403. De même, du code de programmation ou sql peut provoquer des erreurs 403. Veuillez utiliser un lien vers votre code tel que: "pastebin.com slash jVNqLieD"    Merci!
Comment:
SPAM: Do not include any links in your post or use the following construct: "yahoo.com slash mypage.html"    We are using a filter that denies suspicious posts with a 403 error. Programming language or SQL code may also cause a 403 error. Please provide a link to your code instead like: "pastebin.com slash jVNqLieD"    Thank you! :
  Lettres de vérification; lettres minuscules seulement, pas d
Retaper les lettres affichées / Word verification:
Mis à jour / Last updated ( mercredi, 26 mars 2008 23:35 )
 



Consultez TOUS nos fils d'actualité ici. / View ALL our newsfeed here.