Security essentials

Daryl will be using these questions as jumping-off points to cover the essential points of security:

Can you pick the true from the false statements?

Can I invite people to send me data encrypted with a password published on my website for all to see, and know the communication will be secure against eavesdroppers?
Can I exchange passwords with someone in the presence of eavesdroppers and know the eavesdroppers will not be able to figure out the passwords.
Is all that stuff about prime numbers I learned at school useless for any real-world application?
Is a digital signature that is a scan of your hand-written signature easily forged?
Can John Travolta get a computer password by just holding a gun to a cryptography consultant?

True, true, false, No, Yes [provided he knows the password]

About Daryl

[To be provided]