OID value: 2.5.13.3
OID description:
The Case Ignore Ordering Match rule compares the
collation order of a presented string with an
attibute value of type PrintableString, NumericString,
TeletexString, BMPString, UniversalSrting or
DirectoryString without regard for case (upper or lower)
of the strings.
The rule returns TRUE if the attribute value is "less" or appears earlier than the presented value, when the strings are compared using the normal collation order for their syntax after lower-case letters in both strings have been replaced by their upper-case equivalents.
Where the strings being matched are of different ASN.1 syntax, the comparison proceeds as normal so long as the corresponding characters are in both character sets. Otherwise matching fails.
caseIgnoreOrderingMatch MATCHING-RULE ::= { SYNTAX DirectoryString {ub-match} ID id-mr-caseIgnoreOrderingMatch }
See also the OID Repository website reference for 2.5.13.3