How to Import MS (Master Session) Keys

USB folders

• The Folder name is:

  • "MS/KEK" KEK (K0 usage) keys,
  • "MS/KBPK" for KBPK (K1 usage) keys

  If no KEK keys, no need for MS/KEK folder and the same for KBPK keys

Format rules

• File format can be TR-31 or Cryptogram.
• Entire file must be one format.

  • You cannot mix formats within a file.

One key list per file

• Create a separate file for each master key list you want to send.
• Example:

  • If two KEK keys should be sent to a terminal:

    • Create two files under MS/KEK.
  • Same concept for MS/KBPK .

Send behavior

• KLD picks one key from each file (top of file).
• KLD sends that key to the terminal.
• KLD deletes that key from the file.

See the naming rules in:

• TR-31 File Formats (per folder / key type)