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An asymmetric (e.g. public-key) cryptosystem, based on modular exponentiation with big exponents and modulus. RSA can be used both for signature and encryption with proper paddings.

12 votes
2 answers
8k views

If we can find prime numbers larger than 17 milion digits, why can't we find all 1024bit pri... [duplicate]

"Largest Known Prime Number Discovered; Has 17,425,170 Digits" http://www.sciencedaily.com/releases/2013/02/130213225424.htm If we can find prime numbers larger than 17 milion digits, why can't we fi …
10 votes
2 answers
3k views

Why is the complexity of RSA-1024 80 bit and not 86 bit?

Why is the complexity of RSA-1024 80 bit and not 86.76611925028119 bit? … And why does it say RSA modolus size? Shouldn't it be RSA key size instead? …