On 06/04/2010, at 11:40 PM, steve harley wrote:

> (i paste my signature onto PDFs and other electronic documents fairly often)

So do I.

However, I recognise the folly of this (and I guess you do as well).  My hope 
is that when enough people recognise this folly we will move to something more 
secure (like PKI).

>  the idea, though, that it's any less "safe" than sending a piece of paper 
> with your signature is mistaken; anyone who can see your signature can easily 
> reproduce it

I'm not so sure about that.  It's probably easy enough to reproduce it to get 
past someone doing a quick check, but surely there are handwriting experts who 
could tell the difference if required.

>> At least you'd want to set some permissions on the PDF, right?
> 
> that would be useless, since there is no iway to truly secure a PDF document

It depends what you mean by secure?  Secure against screenshots of content or 
secure against tampering or fraud.  PKI can do a lot to protect against the 
latter two.

Cheers,
Ashley.

PS I am not a Public Key Infrastructure (PKI) expert but I know there are 
problems with it as well ...


--
Ashley Aitken
Perth, Western Australia
mrhatken at mac dot com
Skype Name: MrHatken (GMT + 8 Hours!)







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