texas instruments signing keys

These are the .key files necessary to sign your own TI-compatible operating systems or third-party Flash apps. I do not yet have information on how to do the signing itself for the 68k calculators. For z80 calculators, Benjamin Moody's RabbitSign (Unix, Windows) works well.

These keys are provided for the express purpose of creating software compatible with TI calculators, specifically the bootloader software permanently installed on such calculators. I state in good faith that I believe such action is permitted by United States law. Other uses may not be permitted. I do not support taking actions that are illegal, and I do not take responsibility for any misuse. This material is provided for lawful use only.

These are big-endian hexadecimal.

You can download a .zip file of all the keys here.

Due to a DMCA claim by Texas Instruments, this data is presently unavailable.

September 21, 2009

To Whom It May Concern:

Re:       Illegal Offering of Material to Circumvent TI Copyright Protections

VIA: astrids@ticalc.org

 

            It has come to our attention that the web site http://diomedes.phear.cc/~chronomex/keys.shtml, hosted by phear.cc, registrant Enom, Inc., contains materials that violate the anti-circumvention provisions of the Digital Millennium Copyright Act (“DMCA”).  This letter is to notify you, in accordance with the provisions of the DMCA, of these unlawful activities. Pursuant to the safe harbor provisions of the DMCA, we request that you remove any whole or partial reproductions:

The web site noted above contains a key codes used to encrypt the operating systems for the TI-73, TI-83 Plus, TI-84 Plus, TI-89, TI-89T, TI-92 Plus and TI Voyage 200 graphing calculators. On the page http://diomedes.phear.cc/~chronomex/keys.shtml \240encryption key codes have been reproduced.

.

            Texas Instruments Incorporated (“TI”) owns the copyright in the TI-73, TI-83 Plus, TI-84 Plus, TI-89, TI-89T, TI-92 Plus and TI Voyage 200 operating system software.  The TI-73, TI-83 Plus, TI-84 Plus, TI-89, TI-89T, TI-92 Plus and TI Voyage 200 operating system uses encryption to effectively control access to the operating system code and to protect its rights as a copyright owner in that code. Any unauthorized use of these files is strictly prohibited. \240Unless you can show proof of written permission by the an authorized representative of the copyright owner to reproduce and distribute the operating system software noted above, your reproduction and distribution is unlawful activity.

           http://diomedes.phear.cc/~chronomex/keys.shtml is distributing information that bypasses TI’s anti-circumvention technology.  By providing copies of such information, http://diomedes.phear.cc/~chronomex/keys.shtml has violated the anti-circumvention provisions of the DMCA at 17 U.S.C. \247\247 1201(a)(2) and 1201(b)(1).

            Please confirm to the undersigned in writing no later than noon on September 22, 2009 that you have complied with these demands. You may reach the undersigned by telephone at (972) 917-1522 or by email at h-foster@ti.com. TI reserves all further rights and remedies with respect to this matter. 

I hereby confirm that I have a good faith belief that use of the Illegal Material in the manner complained of in this letter is not authorized by the copyright owner, its agent, or the law, that the information in this letter is accurate, and that, under penalty of perjury, I am authorized to act on behalf of TI, the owner of the exclusive rights in the TI-73, TI-83 Plus, TI-84 Plus, TI-89, TI-89T, TI-92 Plus and TI Voyage 200 operating system software that are allegedly misappropriated using unlawful methods.

Texas Instruments Incorporated

Herbert W. Foster

Manager, Business Services

Education Technology Group