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1.1 Glossary

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This document uses the following terms:

Augmented Backus-Naur Form (ABNF): A modified version of Backus-Naur Form (BNF), commonly used by Internet specifications. ABNF notation balances compactness and simplicity with reasonable representational power. ABNF differs from standard BNF in its definitions and uses of naming rules, repetition, alternatives, order-independence, and value ranges. For more information, see [RFC5234].

claim: An assertion about a security principal expressed as the n-tuple {Identifier, ValueType, m Value(s) of type ValueType} where m is greater than or equal to 1. A claim with only one Value in the n-tuple is called a single-valued claim; a claim with more than one Value is called a multi-valued claim.

claims transformation: The process of converting one set of claims by analyzing and filtering the claims and by adding new claims in order to generate a new set of claims.

claims transformation rules language syntax: The context-free grammar expressed in ABNF that specifies the language used to describe the rules used in the Claims Transformation Algorithm.

input claims: The set of claims provided as input to the Claims Transformation Algorithm.

production: An individual ABNF rule in the claims transformation rules language.

production name: The name on the left side of the production.

single-valued claim: A claim with only one Value in the n-tuple {Identifier, ValueType, m Value(s) of type ValueType}.

tag: A production name or a terminal from the claims transformation rules language syntax that is used to identify a portion of the given transformation rules.

terminal: A basic element of the claims transformation rules language syntax.

transformation rules: A set of rules defined according to the claims transformation rules language syntax that specifies how claims are transformed when the Claims Transformation Algorithm is invoked.

UTF-16: A standard for encoding Unicode characters, defined in the Unicode standard, in which the most commonly used characters are defined as double-byte characters. Unless specified otherwise, this term refers to the UTF-16 encoding form specified in [UNICODE5.0.0/2007] section 3.9.

MAY, SHOULD, MUST, SHOULD NOT, MUST NOT: These terms (in all caps) are used as defined in [RFC2119]. All statements of optional behavior use either MAY, SHOULD, or SHOULD NOT.