Re: Encrypted and anonymous phone calls with Tor Fone

James Bond wrote:

> No thanks.
> 


PairPhone is a cross-platform test utility for point-to-point encryption 
of duplex conversation over a GSM compressed voice channel . Modern 
cryptographic solutions providing 128-bit level of protection are used: 
Triple Diffie-Hellman key agreement on elliptic curve 25519 and SHA3 
Keccak 1600/576 Sponge Duplexing symmetric encryption, hashing, MAC, 
SPRNG. Each call is supported by PSF for encryption and hidden 
identification, key agreement is resistant to UKS and KCI 
attacks.Primary via shared password and secret fingerprint comparison as 
well as hidden coercion notification. Devices are paired during the 
first “guest” call, and certificates for each contact are entered into 
the address book.
Voice is compressed with an efficient and reliable MELPE codec , which 
requires an exchange rate of 1200 bps and allows a BER of up to several 
percentage points. Stream encryption is performed in CTR mode with 67.5 
mS blocks (voice frames) and is resistant to error propagation. The 
voice detector allows voice pauses to be used to restore synchronization 
losses after a temporary loss of communication.
A special feature of the design is a specially developed pseudo-vocal 
modem with low carrier distortion in tandem GSM FR codecs during a GSM 
voice call. The modem provides a data rate of 1200 bps with less than 1 
percent bit error and fast on-the-fly synchronization in less than 200 
ms throughput.