NOTE: This is a critical update required to submit electronic files to the IRS IDES Gateway which only accepting CBC cipher encrypted files.
UPDATED: Latest GIIN table is included.
UPDATED: Latest IDES packager v1.8.2 (see release notes for this version here).
UPDATED: A number of other small fixes and enhancements.
IRS reference: https://www.irs.gov/businesses/corporations/ides-data-transmission-and-file-preparation