Re: Simple Effective Secure Email

> Not entirely correct here.
> When you send a PGP encrypted file the process is as follows.
> 1. Sender encrypts with recipients public _key_.
> 2. Message is sent (usually signed by the senders key)
> 3. Recipient decrypts the message using their _private_ key and their
> _private password_

This isn't what really happens either. Here is a more accurate version:

1. Sender compresses plaintext
2. Sender generates a random ``session key''
3. Plaintext is encrypted using a conventional encryption algorithm
and the session key
4. Session key is encrypted with public key and added to the message

This is done so that one can retain the security of a public-key
cryptosystem like RSA, but decrypt as quickly as with a conventional
cryptosystem.

I know you probably understand this already, but many people reading
this list probably won't.

Thanks.

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