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ACRONYMS.txt
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DEFINITIONS AND ACRONYMS for TCG Opal
-------------------------------------------------------------------------------
ATA: AT Attachment
An interface standard for talking to storage media over a parallel bus.
CDB: Command Descriptor Block
A SCSI command block (may contain SAT translated ATA commands).
C_PIN: Current PIN
A table defined within the Opal protocol specifying credentials for a defined
user or authority.
IEEE: Institute of Electrical and Electronics Engineers
International standards body for many computer interfaces.
LBA: Logical Block Addressing
A simple linear addressing scheme indexing sectors from a single number,
instead of cylinder / head / sector.
P1667:
IEEE standard for authenticating to storage devices.
PSID: Physical SID
A PIN on the outside of a Opal drive used to recover SID credentials.
MSID: Manufactured [Default] SID
The factory default state of the drive owner credentials (SID).
OFS: Original Factory State
Opal: See "TCG Opal"
PATA: Parallel ATA (see ATA)
SATA: Serial ATA
An adaptation of parallel ATA devices to a high speed serial bus, along with
some additional commands present in the SCSI protocol.
SAS: Serial Attached SCSI
An adaptation of parallel SCSI devices to a high speed serial bus.
SAT: SCSI / ATA Translation
Interface defined to pass ATA commands through an existing SCSI layer.
SCSI: Small Computer System Interface
An interface standard for talking to storage media over a parallel bus.
SD: Storage Device
SGIO: SCSI Generic I/O
A Linux system system call allowing a user to issue SCSI commands, or ATA
commands through the SAT translation layer, to a target hard drive.
SD: Storage Device
A device providing long term data storage (read: hard drive).
SID: Security Identifier
From spec: "The authority that represents the TPer owner."
In English: A set of user credentials that represent the owner, capable
of enabling locking features and recovering the drive to factory state.
SP: Security Provider
A security function of a TPM, such as locking or authentication.
SSC: Security Subsystem Class
From spec: "Identifies the components from the Core Specification that are
Mandatory, Optional, Excluded, or Not Required for a particular class of
security subsystem."
SWG: Storage Working Group
From spec: "One of the TCG working groups whose purpose is to define security
building blocks for the Storage Device."
TCG: Trusted Computing Group
Standards body for the trusted computing platform.
TCG Enterprise:
Published TCG standard for self encrypting SAS hard drives.
TCG Opal:
Published TCG standard for self encrypting ATA (read: SATA) and SCSI hard drives.
TPM: Trusted Platform Module
Secure coprocessor performing cryptographic and authentication services.
TPer: Trusted Peripheral
From spec: "A Trusted Peripheral."
In English: A component of a trusted computing platform that contains a TPM,
such as an Opal compatible self-encrypting hard drive."
Trusted Computing Platform:
A concept popularized by the TCG, providing a stable computing platform that
uses strong cryptography and authentication to resist exploits, malware, and
unauthorized access/modification.
UID: Unique Identifier
From spec: "Unique 8-byte identifier that identifies objects within tables,
tables, methods, and the SP itself. UIDs are unique within an SP, but not
across SPs."
VU: Vendor Unique