- From: Christian Geuer-Pollmann <geuer-pollmann@nue.et-inf.uni-siegen.de>
- Date: Mon, 13 Nov 2000 20:40:40 +0100
- To: "Smith, Ned" <ned.smith@intel.com>, xml-encryption@w3.org
Dear Ned, --On Montag, 13. November 2000 10:46 -0800 "Smith, Ned" <ned.smith@intel.com> wrote: > One approach could be to hash the contents and return the encrypted > hash value. It will always be the same size. Since the possible > choices are few, the recipient can easily compare hash values from > the set of possible answers. But this is an application specific scenario only interesting if you have a set of possible (allowed) element contents: plaintext: <presidential_vote>Al Gore</presidential_vote> <presidential_vote>George Bush</presidential_vote> hashed plaintext: <presidential_vote>a658e41268d4ce600b35476f639b93e9</presidential_vote> <presidential_vote>48a80bbd36f550e2b9ab2fb4e698007f</presidential_vote> encrypted hashes: <presidential_vote>ai4uWugBlVTc/r1KvLHVG0zT/0d/64h3kTGhuusR9gi5qTMZkoRQlQ== </presidential_vote> <presidential_vote>AD1ywrLLzc2Y3sIlkpJ9HglYSdB9TEZ0VmxSbYboG5GHfLRkaj4RSQ== </presidential_vote> But how do you want to come from the hashed form back to plaintext? Christian Geuer-Pollmann web: <http://www.nue.et-inf.uni-siegen.de/~geuer-pollmann/>
Received on Monday, 13 November 2000 14:52:11 UTC