On: GPS 2.0: Aerospace Corp. Launches Second Draft of GPS

[brandmeyer]

> but it uses a DRNG for which the parameters are kept secret

A standard block cipher running in CTR mode would provide the same functionality. So I don't think its wrong to say that the signal is encrypted.

[elfchief → brandmeyer]

By this logic, crypt(3) creates encrypted (rather than hashed) passwords, because it can be implemented with DES.