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- Path: sparky!uunet!spool.mu.edu!hri.com!ukma!jedwards
- From: jedwards@ms.uky.edu (Jonathan Edwards)
- Newsgroups: sci.crypt
- Subject: Is N a prime power?
- Message-ID: <C1Exs1.8uz@ms.uky.edu>
- Date: 25 Jan 93 14:04:48 GMT
- Organization: University Of Kentucky, Dept. of Math Sciences
- Lines: 7
-
- I am reading an old paper by Tompa that describes Blum's protocol for
- flipping coins by telephone. The first thing the verifier must do is
- verify that a very large (hundreds of digits) number has at least two
- distinct prime factors (i.e., that the number is not a prime power).
- Tompa gives no hint how to do this and I haven't been able to find anyone
- else who knows. I'd very much appreciate it if someone could explain
- how it's done or point me to a paper somewhere...
-