Michael McKibben- Holder of the Patent on Social Networking : Stolen Technology

User avatar
Herb GuitarLik jr
Posts: 189
Joined: Feb 4th, '19, 01:01
Contact:

Re: Michael McKibben- Holder of the Patent on Social Networking : Stolen Technology

Unread post by Herb GuitarLik jr »



Matt BlazeFollow
Mykotronx MYK-78T ("Clipper") Escrowed Encryption Chip
MYK-78T ("Clipper") encryption chip, installed in an AT&T TSD-3600E Telephone Security Device, an encrypting telephone from 1993.



The Clipper chip was the flagship component of a controversial National Security Agency-designed "key escrow" cryptography scheme, in which intercepted encrypted traffic could be decrypted easily by law enforcement or intelligence agencies for surveillance purposes. The program was extremely controversial and, in the end, not a success. Aside from the obvious fundamental problems (the security risks of having a large database of citizen's keys, the need to implement cryptography in expensive secret hardware, etc), the Clipper architecture had technical flaws that made it possible to circumvent the escrow features and preclude the possibility of law enforcement access. (See "Protocol Failure in the Escrowed Encryption Standard" [pdf format], for details.)



AT&T (my employer at the time) was the first (and ultimately only) company to produce a product based on the ill-fated system. The AT&T TSD-3600, announced in 1992, was a voice encryption device designed to be installed in a standard telephone (between the phone base and the handset). Calls placed to other TSD-3600-equipped telephones could be automatically digitized and encrypted, making eavesdropping on the conversation (by legal or illegal means) effectively infeasible. When the US government learned of AT&T's plans to market the device, it worried that criminals might used them to thwart wiretaps. Plans for a new encryption system with a wiretap backdoor were hurriedly drawn up by the NSA, and AT&T was persuaded to replace the regular (non-escrowed) DES-based encryption scheme in the original TSD product with the new system, called the Clipper chip. The Clipper-based model TSD-3600E hit the market in 1993. As incentive for AT&T's cooperation, the government agreed to purchase a significant quantity of Clipper-equipped TSD-3600Es, which sold for over $1000 each in quantity.



Hobbled by the controversial key escrow features and the high retail price, the government ended up being the TSD's only major customer, and even most of the units they bought sat unopened in storage for over ten years. AT&T, for its part, eventually sold off the division that produced the product.



I'm aware of five different TSD-3600 models produced between 1992 and the product's cancellation, differing in the cipher algorithm used. The TSD-3600D was the original, using standard DES with a 56 bit key. (These were quickly recalled and disappeared from the market after Clipper was announced). The 3600F was an exportable model that used a proprietary 40 bit cipher that, I was told, was "embarassingly" weak even given the short key. The 3600P used a proprietary 56 bit cipher similar to DES (but not inter-operable with the 3600D). The 3600E was the first controversial key escrowed model, with the then-classified Skipjack cipher and key escrow features implemented on a tamper-resistant MYK-78T Clipper chip. A later model, the 3600S, included a Clipper chip but would also downgrade (or upgrade, depending on your opinion of key escrow) to the F or P ciphers when communicating with those models. All five models use a Diffie-Hellman key exchange (768 bit, if I recall correctly) to establish a session key, a 4 character hash of which is displayed on each unit's LCD. To detect "man-in-the-middle" attacks, users could verify (by voice) that their displayed hashes matched.



This pictures shows the 1/2 inch square MYK-78T Clipper encryption chip, as installed on the TSD-3600E main circuit board.



Nikkor AM-120mm/5.6, Sinar P, BetterLight Super 6K-HS. Full resolution (6000x8000) version available.

MORE:
https://www.cryptomuseum.com/crypto/usa/clipper.htm


Herb Guitarlik jr and the Al Gore Rhythm BANNED :mrgreen:
User avatar
Herb GuitarLik jr
Posts: 189
Joined: Feb 4th, '19, 01:01
Contact:

Re: Michael McKibben- Holder of the Patent on Social Networking : Stolen Technology

Unread post by Herb GuitarLik jr »

d
Attachments
c8434c690a926ed4efff180c913cbd0721be2a8f3c5f6244ba1699c546447a8e.jpg


Herb Guitarlik jr and the Al Gore Rhythm BANNED :mrgreen:
User avatar
Storm
Site Admin
Posts: 1754
Joined: Mar 6th, '18, 23:36
Location: Pioneer Freedom
Contact:

Re: Michael McKibben- Holder of the Patent on Social Networking : Stolen Technology

Unread post by Storm »

what else is ChInA running
Attachments
over3.jpg
overt.jpg
overt (2).jpg
1sWqT-67xhTapMtXwgPFSeNp8V2g6jNc_K2PxTR-cJE.jpg
2073.jpg
276285bc63d4ebbe.jpg
2bbf0d89c14a1720.jpg
3b87a426488c5bf7ae5da034ddff612d1525e59856dc6239523380648a12c01a.jpg
5b2be9572366d5973a519c70af130a337005fcea63c96eb9c04d730ee0c90df8.jpg
A738qgDm0YalbIUFbgbW1wq10kJN27AQpu_XTX95Jus.jpg
c8434c690a926ed4efff180c913cbd0721be2a8f3c5f6244ba1699c546447a8e.jpg
D6iry3gV4AEPFb-.jpg
D8FDLerWkAEh-DC.jpg
Da2H_fZW4AA_Ayn.jpg
DadRWdjXcAAqd3d.jpg
Dael88VX0AETnA-.jpg
Dcd5lUoX0AAbcZH.jpg
DcmkwtQVwAIeQWu.jpg
DdL8mD7W4AAyNE4.jpg
DdLYN7JU8AAcP02.jpg
DdMjn37XcAEhz0Z.jpg
DdN2O1vUQAIiAbv.jpg
DeN6v-GUQAADfk3.jpg
DgCJkuPU8AAwduC.jpg
DiqbhSrU0AAKONS.jpg
DjD2VcmV4AAOrly.jpg
DjEgVdPUUAE2jhR.jpg
DjEhSALUcAAlr82.jpg
DjEnESiXsAA0azG.jpg
DjEscmzVsAAsgnX.jpg
DjEw_-3XoAIxNT7.jpg
DjFVCteV4AEmlOE.jpg
DjhfUqjX0AwgAK8.jpg
DjIbCwCXcAADWGp.jpg
DjIg7D1V4AAoSiL.jpg
DjOmehrV4AA__hy.jpg
DjY4_laW0AEzdpY.jpg
Dl8HL0LU0AEMp1R.jpg
Dl9NewLXoAA2Ye2.jpg
DlS-eRKWsAETbVE.jpg
DlS-eRKWsAETbVE.jpg (6.5 KiB) Viewed 876 times
DpClqgrU0AAtST9.jpg
DpSNg_JU4AAGvLS.jpg
DsjeWIxUwAEUb7i.jpg
Dv3dOmKX0AE97XR.jpg
Dy9r-1BVAAEm7zF.jpg
EAIsGgFWkAESSHf.jpg
f06d81546126e461.jpeg
f06d81546126e461.jpeg (43.84 KiB) Viewed 876 times
PentFB.jpg


[P]HARMA
Post Reply Previous topicNext topic

Return to “Social Media Spying”

Who is online

Users browsing this forum: No registered users and 1 guest