Patent ID: 9444628
Filing Date: 2016-09-13
CPC Classification: G06F,H04L

Claim Text:
1. A method ( 300 ) for providing differential access to a digital document ( 120 ) among a plurality of workflow participants ( 110 a - 110 n ), wherein at least one of the plurality of workflow participants is outside of at least one of a common and a uniformly-secure environment, said digital document comprising at least one atomic unit ( 122 a ), said method comprising: associating a first set of keys with the at least one atomic unit ( encrypting the at least one atomic unit using the encryption key ( signing the encrypted at least one atomic unit using the signature key ( identifying a level of access from a plurality of access levels to the at least one atomic unit to be granted to each of the workflow participants ( identifying which of the keys in the first set of keys to supply to each of the workflow participants based upon the identified level of access ( supplying each of the workflow participants with the identified one or more keys ( supplying the encrypted and signed at least one atomic unit to a fire workflow participant of the plurality of workflow participants (