What is the difference between PGP and TrueCrypt?
One of the difficulties before asymmetrical key encryption was discovered was how to get the key to the person wanting to send you an encrypted message. In the past trusted couriers were used to get these secret keys to a distant location, maybe an overseas embassy. Nowadays this is unneccessary because of the discovery of what is called public key cryptography. Two different keys are used. One key is secret and the other is made public. The most widespread program of this type for private use is PGP, invented by Phil Zimmerman. In fact it has become the de facto standard on the Net. This program is ideal for Email. Anybody sending you mail simply encrypts their message to you with your PGP public key. The public key is obviously not secret – in fact it may be spread far and wide so that anybody can find it if they wish to send you encrypted Email. The easiest way to ensure this is by sending it to a public key server. On the other hand, some prefer not to share their key, except withi
