determine an n and r for a public key and post it publicly by sending the
values to the whole class (and me) on email. Find the value for s that
will let you decode the message, but DO NOT send the value of s--keep it
Each person compose
a message for the person below them on the class list (Whitney send to
Patti). Use the public key of the person below you to encrypt the
message, and post the encrypted message publicly by emailing it to the whole
Each person decode
the message that was sent to them from the person above.
Turn in the
following to me:
Your work finding n,
r, and s.
The message you
sent, both in English and encrypted, with the work you did to encrypt it.
The message that was
sent to you, both encrypted and decoded, with the work you did to decode it.
Please have your n
and r posted by
on Monday, November 17 at the latest.
Please post your
encoded message by Friday, November 21 at the latest.
The decoded messages
and all other material are due to me by Friday, November 28.
from John Trono. You need to save these somewhere, then change the
file extension from .eee to .exe. You should then be able to run
them just by clicking on them. For asciiout.exe, just type the
message you want, with no carriage returns. Then hit enter and the
program will give you the ascii code for each letter or symbol in your
message. When you are done, Type control shift z, and then close the
window. For asciiin.exe, enter all the ascii codes (you don't need to
enter leading 0's), separated by spaces, and the program will give you the
message in English (assuming a. it was written in English, and b. it
was encoded and decoded properly). asciiin.eee,
An example of using
Maple to do both the encoding and decoding: RSA Code.mws