Secure Modules; Introduction - Motorola ASTRO XTS 3000 Service Manual

Secure Modules

Introduction

The secure modules are designed to digitally encrypt and decrypt voice
and ASTRO data in ASTRO Digital XTS 3000 radios. This section covers
the following secure modules:
• NTN8253
• NTN8254
• NTN8255
• NTN8256
• NTN8257
• NTN8258
• NTN8259
• NTN8260
• NTN8261
• NTN8326
• NTN8418
NOTE: The secure modules are NOT serviceable. The
information contained in this chapter is only
meant to help determine whether a problem is due
to a secure module or the radio itself.
The secure module uses a custom encryption integrated circuit (IC)
and an encryption key variable to perform its encode/decode function.
The encryption key variable is loaded into the secure module, via the
radio's universal (side) connector, from a hand-held, key variable
loader (KVL). The encryption IC corresponds to the particular
encryption algorithm purchased. The encryption algorithms and their
corresponding kit numbers are:
DES NTN8253
DES-XL NTN8254
DES-OFB NTN8255
DVI-XL NTN8256
DVP-XL NTN8257
DES-XL and DES-OFB NTN8258
DVP-XL and DES-OFB NTN8259
DES-XL and DVP-XL NTN8260
DVP-XL and DVI-XL NTN8261
DVI-XL and DES-OFB NTN8326
DES and DES-OFB NTN8418
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• NTN8328
• NTN8329
• NTN8330
• NTN8331
• NTN8705
• 0105956V67
DVP
DVI-XL and DVP
DES-XL and DVP
DVP-XL and DVP
DES-OFB and DVP
All, except DVP
NTN8328
NTN8329
NTN8330
NTN8331
NTN8705
0105956V67
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