Encrypted voip?

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NewbeeObi123:
Hi,

Is Google voice encrypted?  If not is there another voip provider that is that works with Obi?

Thanks.

drgeoff:
No and no.

Mango:
No service provider offers fully encrypted calls via the PSTN, but if you wish you may set up a VPN between two or more locations, with an OBi at each end, and make encrypted calls over your VPN.

Unless you're discussing trade secrets worth $X,XXX,XXX or more, this is likely more trouble than it's worth.  Keep your home network locked down tight (change default passwords, use WPA2 with a strong key, don't use DMZ or port forwarding, use antivirus software, don't leave your network physically accessible to the public) and call it a day.

restamp:
I have always presumed that encrypting a VoIP channel increases latency.  Is this indeed the case, and if so, would anyone care to speculate as to how much of an increase is involved?

drgeoff:
Quote from: restamp on October 19, 2016, 02:51:47 pm

I have always presumed that encrypting a VoIP channel increases latency.  Is this indeed the case, and if so, would anyone care to speculate as to how much of an increase is involved?

No, it is not a given that encryption would introduce additional delay into a digital transmission system.  Many encryption systems are based on XORing the serial bitstream with a scrambling sequence.  That does not introduce delay, nor does the subsequent XORing with the same scrambling sequence to recover the original at the descrambler.

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