How to convert a text into string array and further making it a fixed length(16) char array

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Hi, I'm trying to encrypt a a given text using AES,
the text is

joy leap joy skip joy dance
joy in brevity of life lives
joy in brevity life celebration
joy in a moment pace lives

I need to make this a single string, store them in a char array[16] and encrypt.

Can anyone suggest how to do it?

Posted 20-Apr-14 5:15am

ineffable.an

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OriginalGriff · Answer 1 · 2014-04-20T05:23:00

Solution 1

You can't.
The text you show contains 112 characters: you cannot fit that into 16 characters without throwing away information - which would render the decryption useless!

Posted 20-Apr-14 5:23am

OriginalGriff

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ineffable.an 20-Apr-14 11:35am

that is where I need a guidance actually. I need to encrypt this whole text. I'm using AES where my key is 16 bytes. So how will I encrypt and decrypt the above mentioned poem. If you have any suggestion can you please guide.
Thanks for you time. :)

OriginalGriff 20-Apr-14 11:50am

:laugh:
The Key is not the text to encrypt! It's the sequence of characters that allows you to decrypt the text - the password if you like - you provide it and the original data to encrypt, and it and the encrypted version to decrypt.

Have a look at the MSDN documentation for AES encryption - shows an example:
http://msdn.microsoft.com/en-us/library/system.security.cryptography.aes(v=vs.110).aspx
But I prefer the DES version:
http://msdn.microsoft.com/en-us/library/system.security.cryptography.tripledes(v=vs.110).aspx