special character - Glossary | CSRC (2024)

Definitions:

Any non-alphanumeric character that can be rendered on a standard, American-English keyboard. Use of a specific special character may be application dependent. The list of 7-bit ASCII special characters follows: ` ~! @ # $ % ^ & * ( ) _ + | } { “ : ? > < [ ] \ ; ’ , . / - =
Sources:
CNSSI 4009-2015

A non-alphanumeric character that may be defined by one or more CPE specifications to have a special meaning when it appears unquoted in a WFN. Special characters typically trigger a processor to perform a given function. The rules for escaping CPE special characters are defined in the CPE Naming specification [CPE23-N:5.3.2].
Sources:
NISTIR 7696 under Special Character

Glossary Comments

Comments about specific definitions should be sent to the authors of the linked Source publication. For NIST publications, an email is usually found within the document.

Comments about the glossary's presentation and functionality should be sent to secglossary@nist.gov.

See NISTIR 7298 Rev. 3 for additional details.