Multiply that by several hundred pizza boxes accessing your database cluster.
I'm betting it's 100 times easier to scale your web farm than it is to scale your database cluster. (Actually betting isn't the right word, I know that for a fact.)
You could return a cookie from a pool of cookies received by other people at other times. If you can guess the method of checksumming and encryption, you can make your own.
You're assuming that Amazon's storing anything interesting about you. More likely they're storing relatively trivial info like your name and interests (i.e. a list of stores to display) Ask yourself, why does Amazon want to encrypt data about you?
Assuming Amazon is sending anything more than trivial information, do you want them to send it in clear text?
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Multiply that by several hundred pizza boxes accessing your database cluster.
I'm betting it's 100 times easier to scale your web farm than it is to scale your database cluster. (Actually betting isn't the right word, I know that for a fact.)
You could return a cookie from a pool of cookies received by other people at other times. If you can guess the method of checksumming and encryption, you can make your own.
You're assuming that Amazon's storing anything interesting about you. More likely they're storing relatively trivial info like your name and interests (i.e. a list of stores to display)
Ask yourself, why does Amazon want to encrypt data about you?
Assuming Amazon is sending anything more than trivial information, do you want them to send it in clear text?