 | | Re: RCX as a PGP engine
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| Looked at some of the source code involved. Have a look at the "Gnu Privacy Guard" variant's source at: (URL) I was just thinking, would the RCX be able to implement a PGP or RSA (...) I don't think there is enough room for the WHOLE PGP package in (...) (23 years ago, 23-Feb-02, to lugnet.robotics.rcx.legos)
| | | | | Re: RCX as a PGP engine
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| (...) IIRC, the algorithm doesn't need floating point ops, only very very large primes. (...) yah - I don't think the RCX will have a good generator of random numbers. cool idea, I'd be interested to see if it works :) Dan (23 years ago, 24-Feb-02, to lugnet.robotics.rcx.legos)
| | | | | Re: RCX as a PGP engine
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| (...) Even if it needed FP, legOS supports that. (...) Well, maybe. Maybe not. legOS has a random() function, right? Once the TCP/IP patch is stable, why not use an RCX as an echo server with built in en/decryption? You could just telnet to it, type (...) (23 years ago, 9-Mar-02, to lugnet.robotics.rcx.legos)
| | | | | Re: RCX as a PGP engine
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| (...) The key word is a "good" generator. Random() is way too predictable to use in a crypto application. (23 years ago, 9-Mar-02, to lugnet.robotics.rcx.legos)
| | | | | Re: RCX as a PGP engine
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| (...) Excellent point, Benton Jackson e-mailed me with the following: (...) Good idea using a external sensor to seed some sort of random number generator function. However, the codebase for PGP is pretty darned large and after looking at the source (...) (23 years ago, 9-Mar-02, to lugnet.robotics.rcx.legos)
| | | | | Re: RCX as a PGP engine
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| (...) It really isn't that limited when you consider other platforms that run full PK systems, such as the Dallas Semiconductor iButton. It has a much more limited processors, more limited RAM, and you write your code in Java so it has to be (...) (23 years ago, 9-Mar-02, to lugnet.robotics.rcx.legos)
| | | | | Re: RCX as a PGP engine
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| (...) If you need floating point numbers the leJOS JVM for the RCX uses floating point: (URL) seems like a very intersting idea. I actually wanted to skip the RCX altogether and somehow link up a networking protocol using just the IR Towers. One (...) (23 years ago, 9-Mar-02, to lugnet.robotics.rcx.legos)
| | | | | Re: RCX as a PGP engine
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| (...) They don't, but they need bignums (really big integers). (...) the API is in java.math.BigInteger . (...) You could just run PPP over it I suppose, with some encryption (IPSec?) on top of it. Would be dead slow, though. The charm of the RCX (...) (23 years ago, 10-Mar-02, to lugnet.robotics.rcx.legos, lugnet.robotics.rcx.java)
| | | | | Re: RCX as a PGP engine
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| (...) I just 'ported' (euphemism for minor modifications) some code lingering on the web for fun and voila: MD5 on RCX is up and running (lejos). If anyone's interested, I can post the code. It allows for authentication (PC sends random challenge, (...) (23 years ago, 18-Mar-02, to lugnet.robotics.rcx.legos, lugnet.robotics.rcx.java)
| | | | | Re: RCX as a PGP engine
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| (...) Definitely post it! Better than that, how about sending me the code and I'll add it to our robots section as a unique demonstration. (...) Shouldn't be a problem. Most of the source code in the official Sun package is easy to port to leJOS. (...) (23 years ago, 19-Mar-02, to lugnet.robotics.rcx.legos, lugnet.robotics.rcx.java)
| | | | | MD5 available (was: RCX as a PGP engine)
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| I just put my java MD5 port for lejos on the web: (URL) for the popups, Tripod....) It's a terrible hack, but thanks to that memory footprint is low and it does not leak! Let me know if you find it useful. Have fun, Bart. (23 years ago, 7-Apr-02, to lugnet.robotics.rcx.legos, lugnet.robotics.rcx.java)
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