Quote:
Originally Posted by geekmaster
But good encryption such as AES is designed so that you CANNOT generate keys quickly. To search the 10-character (constrained) key space would require generating encryption keys (such as 128-bit AES which is a much larger keyspace) using a slow crypto hash function at a rate far less than 1,000,000 key pairs per second.
The real question is, does kindle ebook DRM use a good (slow) secure hash function for its key generation?
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Hmm.. u sure? My 3 years old laptop can generate about 1.5M SHA-256 hashes per second...
Edit: I may have missed the point. I don't know how many decryption "attempts" are feasible per second, that could well be much less.
Edit2: some further reading:
http://security.stackexchange.com/qu...mized-cray-xe6