U (Security Glossary)

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UCS

See Universal Character Set.

Unicode

A worldwide character-encoding standard that allows more information to be contained in each string by defining 16-bit character strings rather than the standard 8-bit character strings. Unicode allows universal data exchange and improves multilingual text processing. Unicode strings are also called wide strings.

Universal Character Set

(UCS) A 16-bit character set.

universal well-known security identifier

A security identifier (SID) that is known on all systems that adhere to the security model based on authenticated users and discretionary access control.

UPN

See user principal name.

user

A user of a system is identified by a login procedure, which establishes a process by which applications can run and access other security-relevant objects. An example of a login procedure is to use a smart card, possibly in conjunction with a password or personal identification number (PIN).

user interface (Smart Card)

A common dialog box that lets the user connect to a smart card and use it in an application. Using the dialog box, the user can specify a specific card or search for the smart card to open.

user principal name

(UPN) A user account name (sometimes referred to as the user logon name) and a domain name identifying the domain in which the user account is located. This is the standard usage for logging on to a Windows domain. The format is: someone@example.com (as for an email address).