Platform SDK: Security Glossary

U

UCS
See Universal Character Set.
unicode
A worldwide character-encoding standard that allows more information to be contained in each string by defining 16-byte character strings rather than the standard 8-byte character strings. Unicode allows universal data exchange and improves multilingual text processing. Unicode strings are also called wide strings.
Uniform Resource Locator
An encoding scheme used by the World Wide Web (WWW) for accessing data on the Internet. The general format is service://example.microsoft.com.
Universal Character Set (UCS)
A 16-bit character set.
universal well-known security identifier
A security identifier (SID) that is meaningful on all secure systems using the security model implemented in Microsoft® Windows NT®.

See also security identifier.

URL
See Uniform Resource Locator.
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.