CaseExactMatch is a case-sensitive EQUALITY Matching Rule compares an assertion value of the Directory String syntax to an attribute value of a syntax (e.g., the Directory String, Printable String, Country String, or Telephone Number LDAP Syntax whose corresponding ASN.1 type is DirectoryString or one of the alternative string types of Directory String, such as Printable String.

The rule evaluates to TRUE if and only if the prepared attribute value character string and the prepared assertion value character string have the same number of characters and corresponding characters have the same code point.

In preparing the attribute value and assertion value for comparison, characters are not case folded (ie they are case-sensitive) in the Map preparation step, and only Insignificant Space Handling is applied in the Insignificant Character Handling step.

Defined in RFC 3698 and clarified in RFC 4517

The LDAP definition for the CaseExactMatch Matching Rule is:

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