[xcbf] Errata - Purpose

[Phil Griffin <phil.griffin@asn-1.com>]

Here's an item I submitted to X9F4 for the X9.84 
errata sheet. This has been accepted and will 
appear in the XCBF schema.

Phil


The Purpose type defined in X9.84 as

   Purpose ::= ENUMERATED {
      verify         (1),
      identify       (2),
      enrollVerify   (3),
      enrollIdentity (4),
      audit          (5)
   }

should be changed to

   Purpose ::= ENUMERATED {
      verify         (1),
      identify       (2),
      enrollVerify   (3),
      enrollIdentity (4),
      audit          (5),
      enroll         (6)
   }

Note that this aligns the X9.84 ASN.1 schema to
the BioAPI specification definitions

  typedef uint8 BioAPI_BIR_PURPOSE;
  #define BioAPI_PURPOSE_VERIFY (1)
  #define BioAPI_PURPOSE_IDENTIFY (2)
  #define BioAPI_PURPOSE_ENROLL (3)
  #define BioAPI_PURPOSE_ENROLL_FOR_VERIFICATION_ONLY (4)
  #define BioAPI_PURPOSE_ENROLL_FOR_IDENTIFICATION_ONLY (5)
  #define BioAPI_PURPOSE_AUDIT (6)

which allows "BioAPI_PURPOSE_ENROLL" for the following
reason:

   h) If a BIR is suitable for enrollment for either
      subsequent verification or identification, then
      the Enroll Purpose is to be used in the returned
      BIR header.

-----
Phil