Encrypt Files in SD Card

Other Hardware Storage
1

Hello,
I have a general question. Please is possible to encrypt or cypher a text file generated by arduino and store it in the SD Card ? If it was possible, I will use my own desktop programming application in order to unencrypt the data...

Thanks in advance
Andres

2

Please is possible to encrypt or cypher a text file generated by arduino and store it in the SD Card ?

Anything's possible. How easy, and how secure, it is depends on what encryption method you want to use.

If it was possible, I will use my own desktop programming application in order to unencrypt the data...

Oh, well, then, that explains it all. Simply use the reverse process on the Arduino.

3

Thanks a lot PaulS, please could you tell me some approaching method, library or link to study in order to do it ?

Thanks again bro.

4

any idea please ?

5

Andres2007:
any idea please ?

I have not used any encryption stuff on arduino but a quick google for 'arduino encryption library' bought up some interesting hits.

6

Thanks Riva,
https://code.google.com/p/crypto-arduino-library/source/browse/trunk/Cripto.h

it could help

Bye

7

https://github.com/Denhart/TEA-encryption-on-arduino

I would be careful with any piece of encryption/decryption code published unless I see a good support/discussion to it. It may happen the code is actually easy to read by somebody :slight_smile: