ncryptprotect.h header

This header is used by Security and Identity. For more information, see:

• Security and Identity

ncryptprotect.h contains the following programming interfaces:

Functions

NCryptCloseProtectionDescriptor Zeros and frees a protection descriptor object and releases its handle.
NCryptCreateProtectionDescriptor Retrieves a handle to a protection descriptor object.
NCryptGetProtectionDescriptorInfo Retrieves a protection descriptor rule string.
NCryptProtectSecret Encrypts data to a specified protection descriptor.
NCryptQueryProtectionDescriptorName Retrieves the protection descriptor rule string associated with a registered descriptor display name.
NCryptRegisterProtectionDescriptorName Registers the display name and the associated rule string for a protection descriptor.
NCryptStreamClose Closes a data protection stream object opened by using the NCryptStreamOpenToProtect or NCryptStreamOpenToUnprotect functions.
NCryptStreamOpenToProtect Opens a stream object that can be used to encrypt large amounts of data to a given protection descriptor.
NCryptStreamOpenToUnprotect Opens a stream object that can be used to decrypt large amounts of data to the same protection descriptor used for encryption. (NCryptStreamOpenToUnprotect)
NCryptStreamOpenToUnprotectEx Opens a stream object that can be used to decrypt large amounts of data to the same protection descriptor used for encryption. (NCryptStreamOpenToUnprotectEx)
NCryptStreamUpdate Encrypts and decrypts blocks of data.
NCryptUnprotectSecret Decrypts data to a specified protection descriptor.

Callback functions

PFNCryptStreamOutputCallback Receives encrypted or decrypted data from tasks started by using the NCryptStreamOpenToProtect or NCryptStreamOpenToUnprotect functions.

Structures

NCRYPT_PROTECT_STREAM_INFO Is used by the NCryptStreamOpenToProtect and NCryptStreamOpenToUnprotect functions to pass blocks of processed data to your application.