Open Source Embedded SSL - Export Questions

Thor Lancelot Simon tls at rek.tjls.com
Wed Nov 26 20:27:08 EST 2003


On Wed, Nov 26, 2003 at 02:56:40PM -0800, J Harper wrote:
> Great feedback, let me elaborate.  I realize that AES is implemented in
> hardware for many platforms as well.  I'll mention a bit more about our
> cryptography architecture below.  Do you know why AES is so popular in
> embedded?  ARC4 is faster in software and extremely small code size.  It

RC4 is extremely weak for some applications.  A block cipher is greatly
preferable.

There isn't _quite_ a speed/strength tradeoff in cryptography, but any
time you choose algorithms based purely on speed, you'd better get really,
really suspicious about the strength of what you're producing.

Thor

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