ENHANCED_STORAGE_PASSWORD_SILO_INFORMATION structure (ehstorextensions.h)

The ENHANCED_STORAGE_PASSWORD_SILO_INFORMATION structure contains data that defines the capabilities and requirements of a password silo.

Syntax

typedef struct _ENHANCED_STORAGE_PASSWORD_SILO_INFORMATION {
  BYTE  CurrentAdminFailures;
  BYTE  CurrentUserFailures;
  DWORD TotalUserAuthenticationCount;
  DWORD TotalAdminAuthenticationCount;
  BOOL  FipsCompliant;
  BOOL  SecurityIDAvailable;
  BOOL  InitializeInProgress;
  BOOL  ITMSArmed;
  BOOL  ITMSArmable;
  BOOL  UserCreated;
  BOOL  ResetOnPORDefault;
  BOOL  ResetOnPORCurrent;
  BYTE  MaxAdminFailures;
  BYTE  MaxUserFailures;
  DWORD TimeToCompleteInitialization;
  DWORD TimeRemainingToCompleteInitialization;
  DWORD MinTimeToAuthenticate;
  BYTE  MaxAdminPasswordSize;
  BYTE  MinAdminPasswordSize;
  BYTE  MaxAdminHintSize;
  BYTE  MaxUserPasswordSize;
  BYTE  MinUserPasswordSize;
  BYTE  MaxUserHintSize;
  BYTE  MaxUserNameSize;
  BYTE  MaxSiloNameSize;
  WORD  MaxChallengeSize;
} ENHANCED_STORAGE_PASSWORD_SILO_INFORMATION, *PENHANCED_STORAGE_PASSWORD_SILO_INFORMATION;

Members

CurrentAdminFailures

This is the current number of consecutive unsuccessful authentication attempts using administrator password. This value is reset to 0 after a successful authentication.

CurrentUserFailures

This is the current number of consecutive unsuccessful authentication attempts using user password. This value is reset to 0 after a successful authentication.

TotalUserAuthenticationCount

Total number of authentication attempts attempted on this silo using the user password.

TotalAdminAuthenticationCount

Total number of authentication attempts attempted on this silo using the administrator password.

FipsCompliant

TRUE if the silo claims compliance with the Federal Information Processing Standard (FIPS); otherwise, FALSE.

SecurityIDAvailable

TRUE if a device-unique security identifier provided by the manufacturer is available; otherwise, FALSE.

InitializeInProgress

TRUE if an initialization is in progress; otherwise, FALSE.

ITMSArmed

TRUE if the silo is set to prepare for initialization to the default state set by the manufacturer; otherwise, FALSE.

ITMSArmable

TRUE if the silo is capable of initializing to the default state set by the manufacturer; otherwise, FALSE.

UserCreated

TRUE if the user account has been created in the password silo; otherwise, FALSE.

ResetOnPORDefault

TRUE if the silo resets Administrator authentication failure count to zero upon power cycle. This is the default behavior for the silo. If FALSE, the silo will not reset Administrator authentication failure count to zero upon power cycle.

ResetOnPORCurrent

TRUE if the silo is currently set to reset Administrator authentication failure count to zero upon power cycle; Otherwise FALSE. This configuration is affected by changes introduced by the host or the implementation of factory default settings.

MaxAdminFailures

This is the maximum number of consecutive unsuccessful authentication attempts using administrator password allowed by the silo before it will block the administrator.

MaxUserFailures

This is the maximum number of consecutive unsuccessful authentication attempts using user password allowed by the silo before it will block user.

TimeToCompleteInitialization

Estimated time (in milliseconds) for the device to complete the initialize to manufacturing function.

TimeRemainingToCompleteInitialization

Time remaining (in milliseconds) for the silo to complete the initialize to manufacturing function. The value of this field is zero if the silo is currently not in the process of initialization.

MinTimeToAuthenticate

Minimum time (in milliseconds) the silo will require to complete an authentication operation.

MaxAdminPasswordSize

This is the maximum number of bytes that the silo supports for administrator password.

MinAdminPasswordSize

This is the minimum number of bytes that the silo requires for administrator password.

MaxAdminHintSize

This is the maximum number of bytes that the silo supports for administrator password hint.

MaxUserPasswordSize

This is the maximum number of bytes that the silo supports for user password.

MinUserPasswordSize

This is the minimum number of bytes that the silo requires for user password.

MaxUserHintSize

This is the maximum number of bytes that the silo supports for user password hint.

MaxUserNameSize

This is the maximum number of bytes that the silo supports for friendly user name.

MaxSiloNameSize

The maximum number of bytes that the silo supports for the silo name.

MaxChallengeSize

The maximum number of bytes that the device supports for challenge.

Requirements

Requirement	Value
Minimum supported client	Windows Vista with SP2 [desktop apps only]
Minimum supported server	Windows Server 2008 R2 [desktop apps only]
Header	ehstorextensions.h

See also

Enhanced Storage Portable Device Commands