Posted October 15, 2015
xxswatelitexx: You seem to be mixing a few different concepts.
An authenticated document is not the same as an encrypted document.,
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The public key can only encrypt documents in every specific way that would allow only that specific private key to open.
The only way to view that document is using a specific private key to unencrypt it.
What you are thinking about is document authentication, which uses public certificates authenticated by a 3rd party which has been signed by a private key and authenticated by a public key.
I might be behind in the terminology, because i'm referring to the original usage and explanation. Yes the private key would encrypt and the public key would decrypt anything signed that way. That's known (unless I'm wrong) as digital signing. If public keys are available and Yahoo/Google pick them up as they are being transferred in emails, it can be made to do it automatically; But only that step. Optionally public keys could be provided along with all the emails (I've seen PGP keys following emails).An authenticated document is not the same as an encrypted document.,
<snip>
The public key can only encrypt documents in every specific way that would allow only that specific private key to open.
The only way to view that document is using a specific private key to unencrypt it.
What you are thinking about is document authentication, which uses public certificates authenticated by a 3rd party which has been signed by a private key and authenticated by a public key.