NDU's Privacy Program provides information on the following topics:. Much of the information we send in emails across the NDU network requires protection. Digital signatures and encryption are email tools we use to maintain the confidentiality, authentication, and integrity of this information. Digital signatures confirm that the message comes from the sender who signed the message, and that it has not been altered at any point during transmission. Digital signatures also ensure that the sender cannot deny sending the message, since it required access to the private key on their CAC.
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NDU's Privacy Program provides information on the following topics:. Much of the information we send in emails across the NDU network requires protection. Digital signatures and encryption are email tools we use to maintain the confidentiality, authentication, and integrity of this information. Digital signatures confirm that the message comes from the sender who signed the message, and that it has not been altered at any point during transmission.
Digital signatures also ensure that the sender cannot deny sending the message, since it required access to the private key on their CAC. You may choose to digitally sign all of your email messages by default, using an Outlook setting, or you may choose to turn your digital signature on and off depending upon the content of the email you are sending. Email encryption protects information confidentiality by ensuring that no one but the intended recipient can read it. When you encrypt an email message, you rely on your ability to access the recipient's public key, usually from within a directory or access list, or from a previously received email from which you added the recipient to your contact list.
When the recipient receives and decrypts your email, they use their private key , which resides on their common access card CAC. Likewise, your own public key resides on your CAC. Public keys can be transmitted between users via emails that are digitally signed using CAC certificates. The ability to encrypt email does NOT enable users to send classified information over unclassified systems. The transmission of un-encrypted information requiring encryption must be reported immediately.
Skip to main content Press Enter. The corresponding public key associated with that private key is delivered to the recipient in the email you send. The recipient then uses your public key to verify your identity non-repudiation and that the email has not been altered in transit integrity.
Confidentiality : Encrypting an outgoing email requires the use of the intended recipient's public key from a PKI certificate previously sent to you by the intended recipient. The only key that will decrypt your email is the private key that corresponds to the recipient's public key. This is how message confidentiality is maintained: no-one but the recipient has the private key that can decrypt it.
This means that -- in order to send an encrypted email to someone -- you must first have received a digitally signed email from that person. Pro MacOS X Guidance on setting MS Outlook controls for digital signatures and encryption. NDU's Privacy Program. Examples of Email that Must be Digitally Signed.
Classified information in the United States
This designation is used by Department of Defense and a number of other federal agencies to identify information or material which, although unclassified, may not be appropriate for public release. There is no national policy governing use of the For Official Use Only designation. DoD Directive The For Official Use Only designation is also used by CIA and a number of other federal agencies, but each agency is responsible for determining how it shall be used. The categories of protected information may be quite different from one agency to another, although in every case the protected information must be covered by one of the nine categories of information that are exempt from public release under FOIA. Some agencies use different terminology for the same types of information. In all cases the designations refer to unclassified, sensitive information that is or may be exempt from public release under the Freedom of Information Act.
These forms are used in administering the security classification programs in Government. The following three cover sheets are placed on top of documents to clearly identify the classification level of the document and protect classified information from inadvertent disclosure. The following are placed on various forms of U. Government property i. CDs, diskettes, computers, etc. Top Skip to main content. SF Agency Security Classification Management Program Data Data collection form that every Executive Branch agency submits on an annual basis reporting the total number of original classification authorities, classification decisions, mandatory review requests, and declassification decisions for that particular agency.
GSA Forms Library