How does PGP handle multiple addreses?
• When encrypting a message to multiple addresses, you will notice that the length of the encrypted file only increases by a small amount for each additional address. The reason that the message only grows by a small amount for each additional key is that the body of the message is only encrypted once using a random session key and IDEA. It is only necessary then to encrypt this session key once for each address and place it in the header of the message. Therefore, the total length of a message only increases by the size of a header segment for each additional address. (To avoid a known weakness in RSA when encrypting the same message to multiple recipients, the IDEA session key is padded with different random data each time it is RSA- encrypted.) Go to Table of Contents • 2.7. Where can I obtain scripts to integrate pgp with my email or newsreading system? • There are many scripts and programs available for making PGP easier to use. See below, in Appendix I, for a list of such program
