<div>
Your thinking of the web of trust, or the method used in SMIME/PGP where one can encrypt the massage once, but send the same message to a handful of people. The way that works is, the public key of the recipients (each of them) is used to encrypt the same string (string_x). When they recieve the message they use their private-keys to decrypt string_x, and then string_x to decrypt the message itself.<br />
MS EFS works in this way as well, where each users public-key is used to encrypt the file-encryption-key (string_x), and the FEK is used to encrypt the data.<br />
Basically mixing asymmetric and symmetric encryption types.<br />
-rich
</div>


Your thinking of the web of trust, or the method used in SMIME/PGP where one can encrypt the massage once, but send the same message to a handful of people. The way that works is, the public key of the recipients (each of them) is used to encrypt the same string (string_x). When they recieve the message they use their private-keys to decrypt string_x, and then string_x to decrypt the message itself.
MS EFS works in this way as well, where each users public-key is used to encrypt the file-encryption-key (string_x), and the FEK is used to encrypt the data.
Basically mixing asymmetric and symmetric encryption types.
-rich

<div>
Its possible he is thinking that. Not sure I can tell any more what he is thinking, given the storm of questions :)<br />
<br />
Gotta love DESX though. I wonder why it wasn't used outside of EFS?
</div>


Its possible he is thinking that. Not sure I can tell any more what he is thinking, given the storm of questions :)

Gotta love DESX though. I wonder why it wasn't used outside of EFS?

<div>
<div class="content wysiwyg-content">
Can you &nbsp;have the following<br />
<br />
1&gt; 1 to many relationship between a private key and a public key<br />
<br />
2&gt; A one to many relationship between a public key and a private key
</div>
</div>


Can you  have the following

1> 1 to many relationship between a private key and a public key

2> A one to many relationship between a public key and a private key

Public / Private keys

Operating system security (OS security) is the process of ensuring OS integrity, confidentiality and availability. OS security refers to specified steps or measures used to protect the OS from threats, viruses, worms, malware or remote hacker intrusions. OS security encompasses all preventive-control techniques, which safeguard any computer assets capable of being stolen, edited or deleted if OS security is compromised, including authentication, passwords and threats to systems and programs.

OS Security

Security is the protection of information systems from theft or damage to the hardware, the software, and the information on them, as well as from disruption or misdirection of the services they provide. The main goal of security is protecting assets, and an asset is anything of value and worthy of protection.  Information Security is a discipline of protecting information assets from threats through safeguards to achieve the objectives of confidentiality, integrity, and availability or CIA for short. On the other hand, disclosure, alteration, and disruption (DAD) compromise the security objectives.