// ntifs.h

typedef struct _SEC_CHANNEL_BINDINGS_EX {
  unsigned long magicNumber;
  unsigned long flags;
  unsigned long cbHeaderLength;
  unsigned long cbStructureLength;
  unsigned long dwInitiatorAddrType;
  unsigned long cbInitiatorLength;
  unsigned long dwInitiatorOffset;
  unsigned long dwAcceptorAddrType;
  unsigned long cbAcceptorLength;
  unsigned long dwAcceptorOffset;
  unsigned long cbApplicationDataLength;
  unsigned long dwApplicationDataOffset;
} SEC_CHANNEL_BINDINGS_EX, *PSEC_CHANNEL_BINDINGS_EX;
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Windows Driver Kit DDI reference (ns-ntifs-sec_channel_bindings_ex)

Description

The SEC_CHANNEL_BINDINGS_EX structure is used to provide channel binding information for a security context.

Members

`magicNumber`

Contains SEC_CHANNEL_BINDINGS_VERSION_2. This member ensures that the structure is correctly identified as an extended version, preventing misinterpretation as a standard channel bindings buffer.

`flags`

Specifies additional options for channel bindings. The following flag is defined.

Flag	Description
SEC_CHANNEL_BINDINGS_VALID_FLAGS	Indicates that auditing is required for operations involving these channel bindings.

`cbHeaderLength`

Length in bytes of the header portion of the structure.

`cbStructureLength`

Total length in bytes of the entire structure, including the header and all channel binding data.

`dwInitiatorAddrType`

Address type of the initiator, indicating the format of the initiator's address.

`cbInitiatorLength`

Length in bytes of the initiator's address data.

`dwInitiatorOffset`

Offset in bytes from the start of structure to the initiator's address data.

`dwAcceptorAddrType`

Address type of the acceptor, indicating the format of the acceptor's address.

`cbAcceptorLength`

Length in bytes of the acceptor's address data.

`dwAcceptorOffset`

Offset in bytes from the start of the structure to the acceptor's address data.

`cbApplicationDataLength`

Length in bytes of the application-specific data.

`dwApplicationDataOffset`

Offset in bytes from the start of the structure to the application-specific data.

View the official Windows Driver Kit DDI reference

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