2factor: Interesting Encryption Technology (RSA)

2factor is primarily an encryption technology licensing business -- the company sells its technology to OEMs. The core technology is called Real Privacy Management (RPM).

It works by calculating symmetric private keys (i.e., it doesn't use a public/private key pair). Each party in a transaction has a private key, which it presents to a trusted intermediary. The pair of keys defines a series of encryption keys, to be used in sequence.

2factor says the benefits are:

1. Very fast encryption (the calculations can be done using register arithmetic); perhaps 100x as fast as Diffie-Hellman, for example.
   
2. Provably secure, unlike elliptic curves for example.
3. The trusted-intermediary architecture can be generalized, permitting a federated model.