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Comment on RSA is deceptively simple and fun

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Only simple in what I call the first level of RSA. But all levels could be fun in an effortful sense.

1. Level: encrypting and decrypting a single number or a couple of characters using public and private keys in a couple of lines of code

2. Level: Follow mathematical proofs and understand why it's theoretically secure

3. Level: come up with an implementation that can be used in production

I guess 1 takes minutes to implement, 2 takes days to understand, 3 weeks to implement assuming a standard programmer who hasn't done security.

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