Vol. 3D 38-15

ENCLAVE ACCESS CONTROL AND DATA STRUCTURES

38.15.1 REPORTDATA

REPORTDATA is a 64-Byte data structure that is provided by the enclave and included in the REPORT. It can be used 
to securely pass information from the enclave to the target enclave. 

38.16  REPORT TARGET INFO (TARGETINFO)

This structure is an input parameter to the EREPORT leaf function. The address of TARGETINFO is specified as an 
effective address in RBX. It is used to identify the target enclave which will be able to cryptographically verify the 
REPORT structure returned by EREPORT. TARGETINFO must be 512-Byte aligned.

38.17 KEY 

REQUEST 

(KEYREQUEST)

This structure is an input parameter to the EGETKEY leaf function. It is passed in as an effective address in RBX and 
must be 512-Byte aligned. It is used for selecting the appropriate key and any additional parameters required in 
the derivation of that key.

Table 38-22.  Layout of TARGETINFO Data Structure

Field

OFFSET (Bytes) Size (Bytes)

Description

MEASUREMENT

0

32

The MRENCLAVE of the target enclave.

ATTRIBUTES

32

16

The ATTRIBUTES field of the target enclave.

RESERVED

48

4

MISCSELECT

52

4

The MISCSELECT of the target enclave.

RESERVED

56

456

Table 38-23.  Layout of KEYREQUEST Data Structure

Field

OFFSET (Bytes) Size (Bytes)

Description

KEYNAME

0

02

Identifies the Key Required.

KEYPOLICY

02

02

Identifies which inputs are required to be used in the key derivation.

ISVSVN

04

02

The ISV security version number that will be used in the key derivation.

RESERVED

06

02

Must be zero.

CPUSVN

08

16

The security version number of the processor used in the key derivation.

ATTRIBUTEMASK 24

16

A mask defining which ATTRIBUTES bits will be included in key derivation.

KEYID

40

32

Value for key wear-out protection.

MISCMASK

72

4

A mask defining which MISCSELECT bits will be included in key derivation.

RESERVED

76

436