Re: TEA for real-life embedded project?




SM wrote:

What's the difference between the encryption and decryption in AES? I
thought that in symetric ciphers these functions are more or less, well,
symetric :)

No, AFAIK "symmetric" means only that the same key is used for encrypt
and decrypt. It does not mean that the same /algortihm/ is used for
encrypt & decrypt.

For example, RC4 is a symmetric (stream) cipher with the same algo for
encrypt & decrypt. But DES is a symmetric (block) cipher with
/different/ algos for encrypt & decrypt.

I think!

HTH,
TC (MVP MSAccess)
http://tc2.atspace.com

.



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