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Shell Programming and Scripting
Pls help with script made a calculator
Post 302952693 by Don Cragun on Friday 21st of August 2015 12:06:23 AM
08-21-2015
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LEARN ABOUT DEBIAN
rskeygen
rskeygen(1) General Commands Manual rskeygen(1) NAME
rskeygen - generate private key pairs for TI graphing calculators SYNOPSIS
rskeygen [ --secure ] [ --ti ] [ --length nbytes ] DESCRIPTION
rskeygen generates application and OS signing keys for the Texas Instruments TI-73, TI-83 Plus, TI-84 Plus, TI-89, and TI-92 Plus graphing calculators. These keys consist of two prime numbers p and q as well as their product n. Current calculator models impose a limit of 512 bits (64 bytes) on the size of n, so p and q are generally about 256 bits each. As of this writing this means factoring n is beyond the reach of most people, though this will undoubtedly change in the future. The keys generated by rskeygen are not very useful at the moment, because in order for an application or OS to be accepted by the calcula- tor, the key used to sign it must itself be signed using the calculator's own (possibly unique) private key, which is only known to TI. Nevertheless, rskeygen is provided in the hope that it can be useful, both for testing and for devising new signature schemes based on TI's. OPTIONS --secure Attempt to generate a ``secure'' key using the system's entropy pool, /dev/random (see random(4).) The actual security is thus dependent on your system's implementation of /dev/random. Without --secure, the keys are generated based on the current time and process ID, which is not secure in the slightest. --ti Generate keys which are palatable to TI's official app signing programs. This forces p to be congruent to 3 and q to 7 modulo 8. This option is not necessary when using rabbitsign(1), nor is it necessary for the calculator to validate signatures properly. --length nbytes Specify the length in bytes of the modulus n; p and q are each calculated to be approximately half this length. This should not be greater than 64 for current calculators, and must be less than 256 in any event due to a limitation of the key file format. SEE ALSO
rabbitsign(1), packxxk(1) AUTHOR
Benjamin Moody <floppusmaximus@users.sf.net> RabbitSign 2.0 July 2009 rskeygen(1)