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Usually referred to as self-encrypting drive (SED).HDD FDE is made by HDD vendors using the OPAL and Enterprise standards developed by the Trusted Computing Group. [1] Key management takes place within the hard disk controller and encryption keys are 128 or 256 bit Advanced Encryption Standard (AES) keys.
For example, it defines a way of encrypting the stored data so that an unauthorized person who gains possession of the device cannot see the data. That is, it is a specification for self-encrypting drives (SED). The specification is published by the Trusted Computing Group Storage Workgroup.
Opal Storage Specification specifies a command set for self-encrypting drives and cryptographic erase, available in addition to command-set methods. The drive usually performs fast cryptographic erasure when data is encrypted, and a slower data erasure by overwriting otherwise. [18] SCSI allows for asking for a specific type of erasure. [17]
There are other (non-TCGA/OPAL based) self-encrypted drives (SED) that don't have the known vulnerabilities of the TCG/OPAL based drives (see section below). [6] They are Host/OS and BIOS independent and don't rely on the TPM module or the motherboard BIOS, and their Encryption Key never leaves the crypto-boundary of the drive.
Drives with this capability are known as self-encrypting drives ; they are present on most modern enterprise-level laptops and are increasingly used in the enterprise to protect the data. Changing the encryption key renders inaccessible all data stored on a SED, which is an easy and very fast method for achieving a 100% data erasure.
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DEC SED (text editor), for some DEC operating systems; sed, "stream editor", a simple command-line text editor in unix-like system; Self-encrypting device, an encrypting hard drive; Spectral energy distribution, of an astronomical source; Stochastic electrodynamics, in quantum mechanics
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