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 Sep 24 awarded Autobiographer May 13 awarded Popular Question Apr 22 awarded Notable Question Mar 18 awarded Nice Question Feb 3 awarded Popular Question Jan 15 asked Vertices, Edges and Line Segment intersection points Feb 1 awarded Popular Question Mar 9 awarded Supporter Mar 9 accepted Maple help : How to use functions Mar 8 asked Maple help : How to use functions Mar 5 comment Calculating the area of an irregular polygon @joriki, I am still having some problem here understanding the Newton's method please. I get what you are trying to do but I still see R on both sides of the final equation that I am still missing. For instance, from what I see, you have initial value $R_0$, as well as $R_n$. What values are these for me? Mar 5 comment How to work RSA encryption/decryption I am not working with the bits or able to shift bits. Like I explained, I have an array with random numbers assigned to unique characters, and using that information, I need to encrypt my string. And then decrypt afterwards. Mar 5 comment How to work RSA encryption/decryption Thanks.I probably will end up breaking it up into bits. I thought it was possible to, looking at the algorithm for encrypting, I have above for encrypting all my string input at once, to come up with a way that will work for decrypting as well. Mar 5 comment How to work RSA encryption/decryption That is why I had it encoding my information one character at a time initially. If I have an input that hundreds of lines long, I still would like to be able to handle that without needing to keep looking for bigger and bigger prime numbers each time. Mar 5 comment How to work RSA encryption/decryption 1. Initially set Ciphertext =1 2. For each character in the message string, I find the number key from my character table , and multiply it by the Ciphertext 3. Repeat step 2 until all of the characters in the message string has been handled. M=14891505242871484726569672376320000000000000 <=== Result 4. Encrypt the resulting Ciphertext ciphertext=230958 <== resulting Ciphertext Mar 5 revised How to work RSA encryption/decryption added 61 characters in body Mar 5 comment How to work RSA encryption/decryption The problem is in mainly decoding the ciphertext so I can get back the code for the initial ciphertext at least. How do I get back M=14891505242871484726569672376320000000000000 from the ciphertext=230958. That is what I am having problems with, at the moment. Mar 5 comment How to work RSA encryption/decryption I have a table/array where each character has a number assigned. So whenever I look up the character in my array, I return the number that corresponds and then perform operations on the number that way. When I go to decode, I get the number, check the table for the character that corresponds to it and concatenate that to be decoded plaintext. Mar 5 revised How to work RSA encryption/decryption added 325 characters in body Mar 5 comment How to work RSA encryption/decryption when I convert all my message at once, I get this cipher = 230958. How then do I decode this using my code above? That remains a problem.