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Something you know (e.g. username/password like Active Directory credentials or TPM pin) Something you have (e.g. smart card or other token) Something you are (e.g. biometric attributes like fingerprint, face recognition, iris scan) Automatic authentication in trusted zones (e.g. boot key provided to company devices by the enterprise network)
Device configuration overlay (DCO) is a hidden area on many of today's hard disk drives (HDDs). Usually when information is stored in either the DCO or host protected area (HPA), it is not accessible by the BIOS (or UEFI), OS, or the user. However, certain tools can be used to modify the HPA or DCO.
Challenge–response password recovery mechanism allows the password to be recovered in a secure manner. It is offered by a limited number of disk encryption solutions. Some benefits of challenge–response password recovery: No need for the user to carry a disc with recovery encryption key. No secret data is exchanged during the recovery process.
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The enclosed hard disk drive's case can be tamper-evident, so when inspected the user can be assured that the data has not been compromised. The encryptors electronics including the key store and integral hard drive (if it is solid-state) can be protected by other tamper respondent measures. The key can be purged, allowing a user to prevent his ...
There is an attempt limit, normally set to 5, after which the disk must be power cycled or hard-reset before unlocking can be attempted again. Also in High security mode, the SECURITY ERASE UNIT command can be used with either the User or Master password. In Maximum security mode, the device can be unlocked only with the User password.
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BIOS interrupt calls perform hardware control or I/O functions requested by a program, return system information to the program, or do both. A key element of the purpose of BIOS calls is abstraction - the BIOS calls perform generally defined functions, and the specific details of how those functions are executed on the particular hardware of the system are encapsulated in the BIOS and hidden ...