Managing access to a secure content-part of a PPCD following introduction of the PPCD into a workflow

  • US 8,601,276 B2
  • Filed: 07/27/2011
  • Issued: 12/03/2013
  • Est. Priority Date: 07/27/2011
  • Status: Active Grant
First Claim
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1. A method for managing access to a secure content-part of a publicly posted composite document (PPCD) following introduction of the PPCD into a workflow among a plurality of workflow participants, said method comprising:

  • in a secure content manager,receiving, from a workflow participant of the plurality of workflow participants, a key-map file for a subsequent workflow participant that is to receive the key-map file, wherein the key-map file comprises a set of keys to enable the subsequent workflow participant to access the content-part in the PPCD;

    verifying authenticity of the received key-map file;

    identifying and authenticating the subsequent workflow participant to receive the PPCD;

    accessing a public key of the subsequent workflow participant; and

    encrypting, using the public key of the subsequent workflow participant, by a processor, the key map file or a symmetric key used to encrypt the key-map file prior to receipt of the key-map file by the secure content manager; and

    sending the encrypted key-map file to the subsequent workflow participant.

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