Batboard

not completely finished, but here ya go:


http://members.aol.com/batlabsdotcom/encryption.pdf

Sir,
I tip my hat to you. Well done!

Very nice and well written. I learned a lot from that article.

I concur.

exceptional article. thanks

Looks good.

Just a quick observation (havent finished the whole article yet)

I must disagree with you about the security of DVP-XL being better than DES-XL.

The keylength is longer, but the algo strength is.. Questionable.

Result: DVP-XL is most likely less secure than DES-XL, due to a most probably weaker encryption algo than DES-XL.

Still, its great to finally see some effort going into collecting together all the moto secure stuff.

Cheers,

Pete

Good stuff.

RSA didn't develop PGP, though. PGP was developed by Phil Zimmerman, who was persecuted for doing so in a fairly well publicised three year long court case several years ago.

Also, the length of a keyspace alone does not indicate that one cipher is stronger than another. Compare elliptic curve to traditional finite field or integer factorisation cryptography, for example - you'd need 15,000-bit RSA keys to achieve the same level of security as you'd see in 512-bit ECC.

ogoun wrote:Looks good.

Just a quick observation (havent finished the whole article yet)

I must disagree with you about the security of DVP-XL being better than DES-XL.

The keylength is longer, but the algo strength is.. Questionable.

Result: DVP-XL is most likely less secure than DES-XL, due to a most probably weaker encryption algo than DES-XL.

Still, its great to finally see some effort going into collecting together all the moto secure stuff.

Cheers,

Pete

Where did you find this? It looked to me the opposite was stated (des more secure than dvp)

About half way down the fourth page, where it states: "DVP-XL is MORE SECURE than DES-XL".

Overall, I am impressed with this PDF. It is LONG overdue. I hope to be able to contribute to it soon. Hopefully it will become a "living document", with revisions and additions being made as they are discovered.

Cheers

Pete

All I have to say is "Wow".

I finally understand how encryption works on Motorolas now.

Shame I can't play with it where I usually use my radios.

Thanks, Batdude.

-b-

Is there any way we can get a copy of this either on the discussion board or on the Batlabs site? My company's firewall and access policy prevent me from accessing aol.members.net or other "standard" discussion boards...

Thanks.

http://www.k2jsv.com/batlabs/encryption.pdf

I'll mirror it for Batdude for the people that cannot access AOL servers.

I'll repeat the kudos of everyone else so far on an excellent article, and add my 2 cents by stating how pleased I am that we now have what was sorely missing in lots of previous works: Pictures of the actual items!!!

Keep the stuff coming!!

Boomboy64

Jaymz--

Thanks for the accessible posting.

Batdude--

It is an excellent article.

I'm anxiously awaiting the remaining sections.

Regards,

hi doug,

thanks for these two nice articles.
nice photos, if you need any more ... , please feel free to ask.

best greetings
andreas

Are there any photos we can contribute?

Between us all, we possess at least one of everything /\/\ ever built.

I'm running a couple Spectra's and X9000's with DVP....old skool baby! Need pics?

very nice work Batdude......

YOU LEGEND
BUT IN AUSTRALIA
motorola online "not advalable".
can any one else get these boards and if yes , where did you get them?

From private sellers in the USA.

Unless you can find an ex police DVP SYNTRX or something, that is.

the company I work for has over 30
XTS3000 radios , so thats why I need at least 15 encryption boards.
If there is this amount of pcb's some where for sale please let me know.

boomboy64 wrote:I'll repeat the kudos of everyone else so far on an excellent article, and add my 2 cents by stating how pleased I am that we now have what was sorely missing in lots of previous works: Pictures of the actual items!!!

Keep the stuff coming!!

Boomboy64

And here some pictures of the old stuff - the inside view of a NTN5763C-module :-)

http://dk5ras.dyndns.org/NTN5763/

Really amazing how much electronics they stuffed into those tiny modules...

Fell free to use the photos for whatever you want.

Ralph.

batdude wrote:not completely finished, but here ya go:


http://members.aol.com/batlabsdotcom/encryption.pdf

why when i clickon this link I am getting a sign up page for AOL

It was posted 5 years ago. Contatct batdude he probably moved it.

PJ's latest link works for people behind a work firewall , ETC.

Good write up!

not my work. For some reason akardam whole site is blocked.

n3obl wrote:not my work. For some reason akardam whole site is blocked.

Sounds like your IT monkeys need a beatdown...

n3obl wrote:not my work. For some reason akardam whole site is blocked.

Probably categorized as a "Personal Page" (that's how TrustedSource would do it), which I block as well...