Seecrypt (which is getting all the “avoid the NSA” press today) looked interesting; my wife and I tried it out and it’s pretty intuitive and sound quality was fine for a VOIP product.
SeeCrypt’s advisor is Anthony Chapa, who used to work for the U.S. Secret Service, [and] was quoted on a press release saying that “There are techniques that law enforcement and intelligence organizations have available, and with the help of Seecrypt would not impede their mission.â€
I could not see the word backdoor written anywhere but I it was not mentioned that it did not have one either, and for that and because of their bizarre press release, I would stay out of this application. A similar app you might want to look at to encrypt your mobile phone calls is Kryptos.
Well, I suppose we’ll check out Kryptos, then.
UPDATE: Of course, as Ry notes, it’s hard to avoid SS7 when using a phone. Ah well, at least the voice stuff would be encrypted.
seecrypt is a closed source proprietary blob. how do you know there are no backdoors, like skype? you don’t. why trust them? if they won’t divulge the source code under an open license they’re automatically suspect. you should be able to audit the source or have someone you trust audit it. anything less is not secure.
trust but verify as reagan said.