bits is bits
On Thu, 13 Nov 2003, Matt MacDonald wrote: > > Is it possible to encrypt binary files (pictures, pdfs etc) this way? or > only text files? > Matt > ------------------------------------------------------ > On Thu, 13 Nov 2003 09:22:41 -0500, "Matt MacDonald" < > [EMAIL PROTECTED]> said: > > >Can someone please explain to me, in as few mathematical equations as > >possible, why RSA public/private encryption works? The way it looks to me > >in the documentation that came with REBOL, you have to send the recieving > >party the public key. If this is the case, what stops some hacker from > >intercepting that public key and using it to decrypt the data? How is this > >any different from using a syncronous encryption method and then just > >sending the encryption key along with the data? It just doesn't make sense > >to me. > > You misunderstood how it works. Let's suppose you (A) is trying to send > an encrypted text to a friend (B): > > (A) gets the public key associated with (B). > (A) encrypts the text to be sent using that key and send the encrypted > text to (B). > (B) will receive the encrypted text and uses his private key to decrypt > it. > > Note it is not possible to decrypt the text with just the public key, > so that's why a third person that somehow got the encrypted text would > not be able to decrypt it without knowing the private key from (B). > > If all you want to do iss sign adocument, then you use your private > lkey to sign it and anyway that knows your public key will be able to > verify if the text was changed or something like that. > > -Bruno > > _________________________________________________________________ > Compare high-speed Internet plans, starting at $26.95. > https://broadband.msn.com (Prices may vary by service area.) > > -- > To unsubscribe from this list, just send an email to > [EMAIL PROTECTED] with unsubscribe as the subject. > -- To unsubscribe from this list, just send an email to [EMAIL PROTECTED] with unsubscribe as the subject.
