When first invented in the 1970s, digital signatures made an amazing promise:
better than a handwritten signature -- unforgeable and uncopyable -- on a document. Today, they are a fundamental
component of business in cyberspace. And numerous laws, state and now federal, have codified digital signatures into law.
These laws are a mistake. Digital signatures are not signatures, and they can't fulfill their promise. Understanding why requires
understanding how they work.
Crypto-Gram:
Full Story by Bruce Schneier