Apparatuses and methods are disclosed for accessing and distributing data that includes a portable first device and a second device wherein both devices have unconscious capture capability. The first device has a first memory wherein at least one document is stored in the first memory of the first device. The first device has a transceiver, an identifier, and a public key to access a second device.

 
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> Processing method for key exchange among broadcast or multicast groups that provides a more efficient substitute for Diffie-Hellman key exchange

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