Questions Tagged With encryption

Error when configuring Linphone to use SIP (TLS) and ZRTP encryption

landroni — Tue, 12 Aug 2014 05:51:32 -0400

I am trying to configure Linphone to wrap all media communications in an encryption layer (on Xubuntu). According to their website, Linphone supports:

Secure communications (TLS, SRTP, zRTP)

However, when I try to configure Linphone in Options > Prefs > Network Settings > Network protocol and select SIP (TLS) then Linphone immediately complains with the following error message:

Could not start tls transport on port 5060, maybe this port is already used.

Linphone works just fine when I switch back to SIP (UDP).

What is wrong and how can I fix it?

[Solved] Encryption of backup files

flywheel — Wed, 29 Jun 2011 13:31:20 -0400

Every night I'm running a cron backup script, that gathers the files that I think is essential for the system and stores then in Info-ZIP archives. What I really would like is to encrypt these archives, but is it possible to do this without user input ?

Thanks in advance /flywheel

Java support on Linux for applets

William — Tue, 15 Jun 2010 15:07:43 -0400

I am setting up a new web site for a client using image encryption displayed by applets and a colleague of the client using Linux has reported that he cannot see the images. Although they display fine for me on all platforms using the test computers at the office I am worried that there may be a lack of support that I am missing.

So I am wondering who can and who cannot see these images and if there is a problem, is it due to older browser cross java versions available? Some encrypted images for testing can be found at http://www.artistscope.com/secure_image_demos.asp

encrypting file or all data on hard drive

paranoid — Tue, 04 May 2010 02:15:34 -0400

I wish to encrypt certain files or even better all data files that I create and download to my Ubuntu laptop in order to protect them from unauthorized users. What are my options? What are problems to watch out for? Is there any program that will encrypt/decrypt everything going in and out of specific directories on the hard disk transparently?