IEEE Technology and Society Magazine - Fall 2014 - 51
Digital Institutions Layer
TCC#N
TCC#1
TCF #1
TCF #3
Virtualization APIs
and H/W Abstraction Layer
Virtualization APIs
and H/W Abstraction Layer
VM
TPM Driver
VM
TPM Driver
Hypervisor
VM
TPM Driver
Hypervisor
Hardware
Hypervisor
Hardware
TPM Hardware
Hardware
TPM Hardware
(a)
TPM Hardware
(b)
Trusted Compute Cell (TCC)
Trusted Compute Frameworks (TCF)
Hosting Provider Operational Infra.
Virtualization APIs
and H/W Abstraction Layer
TCF #2
TCC Membership in Group TCC
Cross-TCF Relationship
Fig. 3. Relationship between the TCC and TCF.
component that keeps track of identities, relationships, access policies, the
TCC's memberships (to communities
or institutions), and others. The registry also aids in the day-to-day management of the TCC by its owner. The
registry acts as a Policy Administration Point (PAP) where the owner of a
TCC can set policies regarding access
to applications in the TCC (which is
relevant in community-shared applications) and access to the owner's data
in the PDS.
monitor layer, hardware abstraction
layer, etc.) operated by the cloud
provider.
Fig. 3 illustrates a generic virtualization stack with a TCF environment containing the TCCs. Fig. 3(a)
The vision of a data-driven society is
not likely to progress unless we can
develop credible systems of law and
governance to protect the security
and privacy of personal data.
The Trusted Compute
Framework (TCF)
The TCF is a larger unit of computational capability that is designed
to operate in the virtual environment
on top of a virtual machines layer.
One useful way to view the TCF is
as a virtual resource container within
which one or more TCC operate. The
primary purposes of the TCF are: 1)
to support the secure and uninterrupted operations of the TCCs; and 2)
to ensure the TCF as a compute unit
can operate atop the virtualization
stack (e.g., hypervisor layer, security
TCF-compliant cloud provider (or
self-operated infrastructure). The
TCF is portable in that it can be
relocated from one TCF-compliant
cloud provider to another, using a
trustworthy migration protocol.
illustrates a TCF with multiple
TCCs, where the TCF and the
TCCs are viewed as a portable constructs that are moveable from one
virtualization stack to another. Fig.
3(b) shows two different TCFs (#2
and #3) running multiple TCC cells
with relationships or links among
them (within the same TCF and
across TCFs).
The TCF is a portable compute unit which can be spun-up
(and shut-down) by its owner at a
IEEE TECHNOLOGY AND SOCIETY MAGAZINE
|
FALL 2014
The TCF implements a number
of functions to support itself as a
virtual resource container:
TCF administration: As a compute unit operating atop a virtualization stack, there are administrative
tasks pertaining to the operations of
the TCF itself. These include secure
boot-up and shutdown under the
owner's control, migration and the
secure archiving of one or more TCC
inside a TCF.
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