Beefy Boxes and Bandwidth Generously Provided by pair Networks
Do you know where your variables are?

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
A digital signature is quite different from a normal signature. Someones normal signature is always the same, and independent of the document signed. However, a digital signature is different for different documents. It's closely related to encrypting the document, except that in this case, you don't encrypt the plain text, but you encrypt a digest, and attach the encrypted digest to the document. The digest can be decrypted using your public key (assuming you are using some well-known public/private key encryption technique, like PGP).

Assuming the encryption algorithm can't be broken, and your key isn't compromised, noone else can create the signature. The signature can be copied, but the signature is worthless without the plain text, copying to another document doesn't sign it. Also, if the original text is modified, it no longer matches the signature, so it prevents someone from modifying the original document and pretending you signed it.


In reply to Re: Affero by Abigail-II
in thread and interview from slashdot by zby

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":

  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?

    What's my password?
    Create A New User
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others musing on the Monastery: (2)
    As of 2020-07-10 00:46 GMT
    Find Nodes?
      Voting Booth?

      No recent polls found