ClearOne Digital Media - Manual (Page 80)

Device Secret Keys
For an HDCP Transmitter, Device Secret Key
consists of the secret Global Constant. For an
HDCP Receiver, Device Secret Keys consists of the
secret Global Constant and the RSA private key.
The Device Secret Keys are to be protected from
exposure outside of the HDCP Device.
Downstream
The term, downstream, is used as an adjective
to refer to being towards the sink of the HDCP
Content. For example, when an HDCP Transmitter
and an HDCP Receiver are connected over an
HDCP-protected Interface, the HDCP Receiver can
be referred to as the downstream HDCP Device in
this connection. For another example, on an HDCP
Repeater, the HDCP-protected Interface Port(s)
which can emit HDCP Content can be referred
to as its downstream HDCP-protected Interface
Port(s). See also, upstream.
Global Constant
A 128-bit random, secret constant provided only to
HDCP adopters and used during HDCP Content
encryption or decryption
HDCP Content
HDCP Content consists of Audiovisual Content that
is protected by the HDCP System. HDCP Content
includes the Audiovisual Content in encrypted form
as it is transferred from an HDCP Transmitter to an
HDCP Receiver over an HDCP-protected Interface,
as well as any translations of the same content,
or portions thereof. For avoidance of doubt,
Audiovisual Content that is never encrypted by the
HDCP System is not HDCP Content.
HDCP Device
Any device that contains one or more HDCP-
protected Interface Port and is designed in
adherence to HDCP is referred to as an HDCP
Device.
HDCP Encryption
HDCP Encryption is the encryption technology of
HDCP when applied to the protection of HDCP
Content in an HDCP System.
HDCP Receiver
An HDCP Device that can receive and decrypt
HDCP Content through one or more of its HDCP-
protected Interface Ports is referred to as an HDCP
Receiver.
HDCP Repeater
An HDCP Device that can receive and decrypt
HDCP Content through one or more of its HDCP-
protected Interface Ports, and can also re-encrypt
and emit said HDCP Content through one or more
of its HDCP-protected Interface Ports, is referred
to as an HDCP Repeater. An HDCP Repeater may
also be referred to as either an HDCP Receiver
or an HDCP Transmitter when referring to either
the upstream side or the downstream side,
respectively.
HDCP Session
An HDCP Session is established between an
HDCP Transmitter and HDCP Receiver with the
transmission or reception of rtx as part of the authentication initiation message, AKE_Init. The
established HDCP Session remains valid until it is
aborted by the HDCP Transmitter or a new HDCP
Session is established, which invalidates the HDCP
Session that was previously established, by the
transmission or reception of a new rtx as part of the
AKE_Init message.
HDCP System
An HDCP System consists of an HDCP Transmitter,
zero or more HDCP Repeaters and one or more
HDCP Receivers connected through their HDCP-
protected interfaces in a tree topology; whereas the
said HDCP Transmitter is the HDCP Device most
upstream, and receives the Audiovisual Content
from one or more Upstream Content Control
Functions. All HDCP Devices connected to other
HDCP Devices in an HDCP System over HDCP-
protected Interfaces are part of the HDCP System.
HDCP Transmitter
An HDCP Device that can encrypt and emit
HDCP Content through one or more of its HDCP-
protected Interface Ports is referred to as an HDCP
Transmitter.
HDCP
HDCP is an acronym for High-bandwidth Digital
Content Protection. This term refers to this content
protection system as described by any revision of
this specification and its errata.
HDCP-protected Interface Port
A logical connection point on an HDCP Device that
supports an HDCP-protected Interface is referred
to as an HDCP-protected Interface Port. A single
connection can be made over an HDCP-protected
interface port.
HDCP-protected Interface
An interface for which HDCP applies is described
as an HDCP- protected Interface.
Master Key
A 128-bit random, secret cryptographic key
negotiated between the HDCP Transmitter and
the HDCP Receiver during Authentication and Key
Exchange and used to pair the HDCP Transmitter
with the HDCP Receiver.
Public Key Certificate
Each HDCP Receiver is issued a Public Key
Certificate signed by DCP LLC, and contains the
Receiver ID and RSA public key corresponding to
the HDCP Receiver.
Receiver Connected Indication
An indication to the HDCP Transmitter that an
active receiver has been connected to it. The
format of the indication or the method used by the
HDCP Transmitter to connect to or disconnect from
a receiver is outside the scope of this specification.
Receiver Disconnected Indication
An indication to the HDCP Transmitter that the
receiver has been disconnected from it. The format
of the indication or the method used by the HDCP
Transmitter to connect to or disconnect from a
receiver is outside the scope of this specification.
pg 80 StreamNet Digital Media and System Design Reference Guide
Glossary