Beefy Boxes and Bandwidth Generously Provided by pair Networks
Welcome to the Monastery
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

Don't know how secure deterministic asymmetric encryption (lets call it DAE) is, but you want it to fill out exactly the role for which hashes aka trap-door functions were invented.

I'm actually working in a facility for cryptographic research and I asked someone who should know the actual research in the field. He told me that there is not much research about the strength of DAE, I suspect because there are much better alternatives.

Usually you would do the following: Store the data with symmetric encription and a random key that is encrypted with asymmetric encryption (this method is standard for any data bigger than a few hundred bytes, since asymmetric encryption is very slow). Beside this store the hash of the data. At the moment sha256 seems to be the hash everyone uses, with sha512 for the really paranoid.

As you can see this fulfills all your requirements


In reply to Re^3: Deterministic asymmetric encryption [Crypt::RSA] by jethro
in thread Deterministic asymmetric encryption [Crypt::RSA] by andreas1234567

Title:
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!
  • 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
  • Outside of code tags, you may need to use entities for some characters:
            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?
    Username:
    Password:

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

    How do I use this? | Other CB clients
    Other Users?
    Others browsing the Monastery: (10)
    As of 2014-07-29 20:34 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      My favorite superfluous repetitious redundant duplicative phrase is:









      Results (227 votes), past polls