Importance

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Abstract

A method of secure information sharing between a first domain and a plurality of destination domains, the method comprising:

a. Processing a file at the first domain to establish a set of attributes of the file, the attributes of the file comprising a destination attribute for determining permitted domains to which the file may be sent,b. Encrypting the file at the first domain using the attributes of the file, and thereby generating an encrypted file,c. providing the first domain with, for a first destination domain, a first egress data guard comprising a destination attribute associated with the first destination domain,d. identifying that the encrypted file is desired to be communicated to the first destination domain,e. attempting to decrypt the encrypted file at the first egress data guard using a decryption key derived from the destination attribute of the first egress data guard, where decryption will be possible if the destination attribute of the data guard matches the destination attribute of the file,f. if it has been possible to decrypt the encrypted file at step e, making a determination as to whether the file may be communicated to the first destination domain.

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First Claim