2

Is it possible to setup lighttpd server and curl client so that both the client and the server verify each other's self-signed SSL certificate but the file is downloaded without SSL encryption?

How can I setup this?

  • 1
    Are you sure that makes sense? CPU load is caused by asymmetric crypto, hardly by the symmetric encryption of the transfer. – Hauke Laging Apr 17 '13 at 12:07
  • We are running it on relatively weak machine and we observe significant speeds drops during transfers. – jackhab Apr 17 '13 at 15:25
  • Have you compared the speed drops with encrypted and unencrypted connections? Maybe HTTP digest authentication is the solution for you (avoiding the SSL handshake CPU load). I don't know whether lighttpd supports that, though. – Hauke Laging Apr 17 '13 at 15:30
  • @Hauke Laging: The speed drops from hundreds to tens of Mb/s. – jackhab Apr 17 '13 at 19:18
4

Technically, it's possible to specify the the OpenSSL library not to use any encryption (SSL_RSA_WITH_NULL_MD5, SSL_RSA_WITH_NULL_SHA and similar) but it doesn't make any sense from a security point of view: that would make it wide open to a man-in-the-middle attack.

I checked the lighthttpd documentation and it doesn't seem that you can pass it directly an OpenSSL cyphersuit constant. You might want to try it, though.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.