BIND 10 #3321: Use a lowercase version of calculate() for further speedup in findNSEC3()

[BIND 10 Development]

#3321: Use a lowercase version of calculate() for further speedup in findNSEC3()
-------------------------------------+-------------------------------------
                   Reporter:  muks   |                 Owner:
                       Type:         |                Status:  new
  enhancement                        |             Milestone:  New Tasks
                   Priority:         |              Keywords:
  medium                             |             Sensitive:  0
                  Component:  data   |           Sub-Project:  DNS
  source                             |  Estimated Difficulty:  0
               CVSS Scoring:         |           Total Hours:  0
            Defect Severity:  N/A    |
Feature Depending on Ticket:         |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
-------------------------------------+-------------------------------------
 `findNSEC3()` (in database and memory backends) uses a version of hash
 calculator that converts the label data to lowercase every time before
 calculating the hash. Because it does it repeatedly for sub-seqeunces of
 the same name, it can be optimized by converting the name to lowercase
 upfront and using a lowercase version of `calculate()` with it.

-- 
Ticket URL: <http://bind10.isc.org/ticket/3321>
BIND 10 Development <http://bind10.isc.org>
BIND 10 Development