4.63. hmaccalc

Bug Fix

BZ#658178

Prior to this update, hmaccalc erroneously truncated the values which it read from a checkfile before comparing them with the computed values. Consequently, comparison between differently truncated sums of files passed in some cases. This update backports a change which modifies the hmaccalc tool so that when it is used to verify checksums, if it is told to truncate computed values during a verification operation, it will not truncate the values which it reads from a checkfile before comparing them with the computed values. As a result hmaccalc correctly detects differences in hmac values.