Kenwood Encryption compatible with DES-XL

[kb0wsw]

Is anyone able to tell me if the Kenwood P25 radios are compatible with DES-XL encryption? Looking specifically at the VP-5000/6000 series and the TK-5000 series. A call to Kenwood said "Maybe, maybe not as I am not familiar with the XL". All of the product info I can find mentions the DES or OFB portion, but not the XL specifically.

Currently using APX-6000 and XTL-5000 but these recently became available as well.

Thanks.

 

[kd4efm]

The short answer is it will work with the APX and XTL in DES mode.

1 DES-OFB is the standard, DES-XL was M's way to enhance the ANALOG use of it. Digital is just DES.
2 if your using it in the ham bands, be cautious!
3 if you are using it on part 95 and not ham band, have at it.

Direct from JVC-Kenwood LMR, as I am typing this. (I have good sources)

Evans

 

[kb0wsw]

No, this is for commercial use.

We already use it in the APX and XTL radios, just no one was able to tell me if the Kenwood/Johnsons would do it.

 

[kd4efm]

I am told it will work with the APX./XTL's.
Dump a code in it and try it, do you have the 5000 and KPG-D1 yet?

*NOTE: I have tested my UHF 5300K6 with an XTS3000 and and APX6000 simplex with
DES (nothing fancy) and works like a charm.

MY DES TEST CODE:
NAME: P25 DES Alpha
KEYID: 13
KEY DATA: 0110203140516170

 

[slicerwizard]

1 DES-OFB is the standard, DES-XL was M's way to enhance the ANALOG use of it. Digital is just DES.

Yeah, that's why P25 has what, four algorithm IDs for DES?

81 DES-OFB and 9F DES-XL are not compatible.

 

[kd4efm]

DES-XL is a Motorola variant of the US Gov't DES algorithm.

DVP and DES are self-synchronizing modes of operation, coverage range is slightly degraded due to Rayleigh fading on radio channel.

DVP-XL, DVI-XL, DES-XL use a sync header and periodic sync updates. For operation on fading radio channels, this provides encryption coverage range similar to analog voice coverage.

2-Way Encryption Primer

 

[sfd119]

Yes, DES will work. County SO uses Motorolas with DES-XL/OFB and our Kenwoods with the DES works fine with it and the KVL.