[mirror_edk2.git] / SecurityPkg / VariableAuthenticated / RuntimeDxe / AuthService.h

/** @file\r
  The internal header file includes the common header files, defines\r
  internal structure and functions used by AuthService module.\r
\r
Copyright (c) 2009 - 2012, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution.  The full text of the license may be found at\r
http://opensource.org/licenses/bsd-license.php\r
\r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#ifndef _AUTHSERVICE_H_\r
#define _AUTHSERVICE_H_\r
\r
#define EFI_CERT_TYPE_RSA2048_SHA256_SIZE 256\r
#define EFI_CERT_TYPE_RSA2048_SIZE        256\r
\r
///\r
/// Size of AuthInfo prior to the data payload.\r
///\r
#define AUTHINFO_SIZE ((OFFSET_OF (EFI_VARIABLE_AUTHENTICATION, AuthInfo)) + \\r
                       (OFFSET_OF (WIN_CERTIFICATE_UEFI_GUID, CertData)) + \\r
                       sizeof (EFI_CERT_BLOCK_RSA_2048_SHA256))\r
\r
#define AUTHINFO2_SIZE(VarAuth2) ((OFFSET_OF (EFI_VARIABLE_AUTHENTICATION_2, AuthInfo)) + \\r
                                  (UINTN) ((EFI_VARIABLE_AUTHENTICATION_2 *) (VarAuth2))->AuthInfo.Hdr.dwLength)\r
\r
#define OFFSET_OF_AUTHINFO2_CERT_DATA ((OFFSET_OF (EFI_VARIABLE_AUTHENTICATION_2, AuthInfo)) + \\r
                                       (OFFSET_OF (WIN_CERTIFICATE_UEFI_GUID, CertData)))\r
\r
///\r
/// "AuthVarKeyDatabase" variable for the Public Key store.\r
///\r
#define AUTHVAR_KEYDB_NAME      L"AuthVarKeyDatabase"\r
#define AUTHVAR_KEYDB_NAME_SIZE 38\r
\r
///\r
/// Max size of public key database, restricted by max individal EFI varible size, exclude variable header and name size.\r
///\r
#define MAX_KEYDB_SIZE  (FixedPcdGet32 (PcdMaxVariableSize) - sizeof (VARIABLE_HEADER) - AUTHVAR_KEYDB_NAME_SIZE)\r
#define MAX_KEY_NUM     (MAX_KEYDB_SIZE / EFI_CERT_TYPE_RSA2048_SIZE)\r
\r
///\r
/// Struct to record signature requirement defined by UEFI spec.\r
/// For SigHeaderSize and SigDataSize, ((UINT32) ~0) means NO exact length requirement for this field.\r
///\r
typedef struct {\r
  EFI_GUID    SigType;\r
  // Expected SignatureHeader size in Bytes.\r
  UINT32      SigHeaderSize;\r
  // Expected SignatureData size in Bytes.\r
  UINT32      SigDataSize;\r
} EFI_SIGNATURE_ITEM;\r
\r
typedef enum {\r
  AuthVarTypePk,\r
  AuthVarTypeKek,\r
  AuthVarTypePriv\r
} AUTHVAR_TYPE;\r
\r
#pragma pack(1)\r
typedef struct {\r
  EFI_GUID    VendorGuid;\r
  UINT32      CertNodeSize;\r
  UINT32      NameSize;\r
  UINT32      CertDataSize;\r
  /// CHAR16  VariableName[NameSize];\r
  /// UINT8   CertData[CertDataSize];\r
} AUTH_CERT_DB_DATA;\r
#pragma pack()\r
\r
/**\r
  Process variable with EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS/EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS set.\r
\r
  @param[in]  VariableName                Name of Variable to be found.\r
  @param[in]  VendorGuid                  Variable vendor GUID.\r
\r
  @param[in]  Data                        Data pointer.\r
  @param[in]  DataSize                    Size of Data found. If size is less than the\r
                                          data, this value contains the required size.\r
  @param[in]  Variable                    The variable information which is used to keep track of variable usage.\r
  @param[in]  Attributes                  Attribute value of the variable.\r
\r
  @return EFI_INVALID_PARAMETER           Invalid parameter\r
  @return EFI_WRITE_PROTECTED             Variable is write-protected and needs authentication with\r
                                          EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS set.\r
  @return EFI_SECURITY_VIOLATION          The variable is with EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS\r
                                          set, but the AuthInfo does NOT pass the validation\r
                                          check carried out by the firmware.\r
  @return EFI_SUCCESS                     Variable is not write-protected, or passed validation successfully.\r
\r
**/\r
EFI_STATUS\r
ProcessVariable (\r
  IN     CHAR16                             *VariableName,\r
  IN     EFI_GUID                           *VendorGuid,\r
  IN     VOID                               *Data,\r
  IN     UINTN                              DataSize,\r
  IN     VARIABLE_POINTER_TRACK             *Variable,\r
  IN     UINT32                             Attributes\r
  );\r
\r
/**\r
  Update platform mode.\r
\r
  @param[in]      Mode                    SETUP_MODE or USER_MODE.\r
\r
  @return EFI_INVALID_PARAMETER           Invalid parameter.\r
  @return EFI_SUCCESS                     Update platform mode successfully.\r
\r
**/\r
EFI_STATUS\r
UpdatePlatformMode (\r
  IN  UINT32                    Mode\r
  );\r
\r
/**\r
  Initializes for authenticated varibale service.\r
\r
  @retval EFI_SUCCESS           Function successfully executed.\r
  @retval EFI_OUT_OF_RESOURCES  Fail to allocate enough memory resource.\r
\r
**/\r
EFI_STATUS\r
AutenticatedVariableServiceInitialize (\r
  VOID\r
  );\r
\r
/**\r
  Initializes for cryptlib service before use, include register algrithm and allocate scratch.\r
\r
**/\r
VOID\r
CryptLibraryInitialize (\r
  VOID\r
  );\r
\r
/**\r
  Check input data form to make sure it is a valid EFI_SIGNATURE_LIST for PK/KEK variable.\r
\r
  @param[in]  VariableName                Name of Variable to be check.\r
  @param[in]  VendorGuid                  Variable vendor GUID.\r
  @param[in]  Data                        Point to the variable data to be checked.\r
  @param[in]  DataSize                    Size of Data.\r
\r
  @return EFI_INVALID_PARAMETER           Invalid signature list format.\r
  @return EFI_SUCCESS                     Passed signature list format check successfully.\r
  \r
**/\r
EFI_STATUS\r
CheckSignatureListFormat(\r
  IN  CHAR16                    *VariableName,\r
  IN  EFI_GUID                  *VendorGuid,\r
  IN  VOID                      *Data,\r
  IN  UINTN                     DataSize\r
  );\r
\r
/**\r
  Process variable with platform key for verification.\r
\r
  @param[in]  VariableName                Name of Variable to be found.\r
  @param[in]  VendorGuid                  Variable vendor GUID.\r
  @param[in]  Data                        Data pointer.\r
  @param[in]  DataSize                    Size of Data found. If size is less than the\r
                                          data, this value contains the required size.\r
  @param[in]  Variable                    The variable information which is used to keep track of variable usage.\r
  @param[in]  Attributes                  Attribute value of the variable.\r
  @param[in]  IsPk                        Indicate whether it is to process pk.\r
\r
  @return EFI_INVALID_PARAMETER           Invalid parameter\r
  @return EFI_SECURITY_VIOLATION          The variable does NOT pass the validation\r
                                          check carried out by the firmware.\r
  @return EFI_SUCCESS                     Variable passed validation successfully.\r
\r
**/\r
EFI_STATUS\r
ProcessVarWithPk (\r
  IN  CHAR16                    *VariableName,\r
  IN  EFI_GUID                  *VendorGuid,\r
  IN  VOID                      *Data,\r
  IN  UINTN                     DataSize,\r
  IN  VARIABLE_POINTER_TRACK    *Variable,\r
  IN  UINT32                    Attributes OPTIONAL,\r
  IN  BOOLEAN                   IsPk\r
  );\r
\r
/**\r
  Process variable with key exchange key for verification.\r
\r
  @param[in]  VariableName                Name of Variable to be found.\r
  @param[in]  VendorGuid                  Variable vendor GUID.\r
  @param[in]  Data                        Data pointer.\r
  @param[in]  DataSize                    Size of Data found. If size is less than the\r
                                          data, this value contains the required size.\r
  @param[in]  Variable                    The variable information that is used to keep track of variable usage.\r
  @param[in]  Attributes                  Attribute value of the variable.\r
\r
  @return EFI_INVALID_PARAMETER           Invalid parameter.\r
  @return EFI_SECURITY_VIOLATION          The variable does NOT pass the validation\r
                                          check carried out by the firmware.\r
  @return EFI_SUCCESS                     Variable passed validation successfully.\r
\r
**/\r
EFI_STATUS\r
ProcessVarWithKek (\r
  IN  CHAR16                    *VariableName,\r
  IN  EFI_GUID                  *VendorGuid,\r
  IN  VOID                      *Data,\r
  IN  UINTN                     DataSize,\r
  IN  VARIABLE_POINTER_TRACK    *Variable,\r
  IN  UINT32                    Attributes OPTIONAL\r
  );\r
\r
/**\r
  Merge two buffers which formatted as EFI_SIGNATURE_LIST. Only the new EFI_SIGNATURE_DATA\r
  will be appended to the original EFI_SIGNATURE_LIST, duplicate EFI_SIGNATURE_DATA\r
  will be ignored.\r
\r
  @param[in, out]  Data            Pointer to original EFI_SIGNATURE_LIST.\r
  @param[in]       DataSize        Size of Data buffer.\r
  @param[in]       NewData         Pointer to new EFI_SIGNATURE_LIST to be appended.\r
  @param[in]       NewDataSize     Size of NewData buffer.\r
\r
  @return Size of the merged buffer.\r
\r
**/\r
UINTN\r
AppendSignatureList (\r
  IN  OUT VOID            *Data,\r
  IN  UINTN               DataSize,\r
  IN  VOID                *NewData,\r
  IN  UINTN               NewDataSize\r
  );\r
\r
/**\r
  Compare two EFI_TIME data.\r
\r
\r
  @param FirstTime           A pointer to the first EFI_TIME data.\r
  @param SecondTime          A pointer to the second EFI_TIME data.\r
\r
  @retval  TRUE              The FirstTime is not later than the SecondTime.\r
  @retval  FALSE             The FirstTime is later than the SecondTime.\r
\r
**/\r
BOOLEAN\r
CompareTimeStamp (\r
  IN EFI_TIME               *FirstTime,\r
  IN EFI_TIME               *SecondTime\r
  );\r
\r
\r
/**\r
  Process variable with EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS set\r
\r
  @param[in]  VariableName                Name of Variable to be found.\r
  @param[in]  VendorGuid                  Variable vendor GUID.\r
  @param[in]  Data                        Data pointer.\r
  @param[in]  DataSize                    Size of Data found. If size is less than the\r
                                          data, this value contains the required size.\r
  @param[in]  Variable                    The variable information which is used to keep track of variable usage.\r
  @param[in]  Attributes                  Attribute value of the variable.\r
  @param[in]  AuthVarType                 Verify against PK or KEK database or private database.\r
  @param[out] VarDel                      Delete the variable or not.\r
\r
  @retval EFI_INVALID_PARAMETER           Invalid parameter.\r
  @retval EFI_SECURITY_VIOLATION          The variable does NOT pass the validation\r
                                          check carried out by the firmware.\r
  @retval EFI_OUT_OF_RESOURCES            Failed to process variable due to lack\r
                                          of resources.\r
  @retval EFI_SUCCESS                     Variable pass validation successfully.\r
\r
**/\r
EFI_STATUS\r
VerifyTimeBasedPayload (\r
  IN     CHAR16                             *VariableName,\r
  IN     EFI_GUID                           *VendorGuid,\r
  IN     VOID                               *Data,\r
  IN     UINTN                              DataSize,\r
  IN     VARIABLE_POINTER_TRACK             *Variable,\r
  IN     UINT32                             Attributes,\r
  IN     AUTHVAR_TYPE                       AuthVarType,\r
  OUT    BOOLEAN                            *VarDel\r
  );\r
\r
extern UINT8  mPubKeyStore[MAX_KEYDB_SIZE];\r
extern UINT32 mPubKeyNumber;\r
extern VOID   *mHashCtx;\r
extern VOID   *mStorageArea;\r
extern UINT8  *mSerializationRuntimeBuffer;\r
\r
#endif\r
Commit	Line	Data
0c18794e	1	/** @file\r
	2	The internal header file includes the common header files, defines\r
	3	internal structure and functions used by AuthService module.\r
	4	\r
ed47ae02	5	Copyright (c) 2009 - 2012, Intel Corporation. All rights reserved.<BR>\r
2d3fb919	6	This program and the accompanying materials\r
	7	are licensed and made available under the terms and conditions of the BSD License\r
	8	which accompanies this distribution. The full text of the license may be found at\r
0c18794e	9	http://opensource.org/licenses/bsd-license.php\r
0c18794e	10	\r
2d3fb919	11	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
0c18794e	12	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	13	\r
	14	**/\r
	15	\r
	16	#ifndef _AUTHSERVICE_H_\r
	17	#define _AUTHSERVICE_H_\r
	18	\r
	19	#define EFI_CERT_TYPE_RSA2048_SHA256_SIZE 256\r
	20	#define EFI_CERT_TYPE_RSA2048_SIZE 256\r
	21	\r
	22	///\r
2d3fb919	23	/// Size of AuthInfo prior to the data payload.\r
0c18794e	24	///\r
2d3fb919	25	#define AUTHINFO_SIZE ((OFFSET_OF (EFI_VARIABLE_AUTHENTICATION, AuthInfo)) + \\r
	26	(OFFSET_OF (WIN_CERTIFICATE_UEFI_GUID, CertData)) + \\r
	27	sizeof (EFI_CERT_BLOCK_RSA_2048_SHA256))\r
	28	\r
	29	#define AUTHINFO2_SIZE(VarAuth2) ((OFFSET_OF (EFI_VARIABLE_AUTHENTICATION_2, AuthInfo)) + \\r
	30	(UINTN) ((EFI_VARIABLE_AUTHENTICATION_2 *) (VarAuth2))->AuthInfo.Hdr.dwLength)\r
	31	\r
	32	#define OFFSET_OF_AUTHINFO2_CERT_DATA ((OFFSET_OF (EFI_VARIABLE_AUTHENTICATION_2, AuthInfo)) + \\r
	33	(OFFSET_OF (WIN_CERTIFICATE_UEFI_GUID, CertData)))\r
0c18794e	34	\r
	35	///\r
	36	/// "AuthVarKeyDatabase" variable for the Public Key store.\r
	37	///\r
	38	#define AUTHVAR_KEYDB_NAME L"AuthVarKeyDatabase"\r
	39	#define AUTHVAR_KEYDB_NAME_SIZE 38\r
	40	\r
	41	///\r
	42	/// Max size of public key database, restricted by max individal EFI varible size, exclude variable header and name size.\r
	43	///\r
	44	#define MAX_KEYDB_SIZE (FixedPcdGet32 (PcdMaxVariableSize) - sizeof (VARIABLE_HEADER) - AUTHVAR_KEYDB_NAME_SIZE)\r
	45	#define MAX_KEY_NUM (MAX_KEYDB_SIZE / EFI_CERT_TYPE_RSA2048_SIZE)\r
	46	\r
d912bad7	47	///\r
	48	/// Struct to record signature requirement defined by UEFI spec.\r
	49	/// For SigHeaderSize and SigDataSize, ((UINT32) ~0) means NO exact length requirement for this field.\r
	50	///\r
	51	typedef struct {\r
	52	EFI_GUID SigType;\r
	53	// Expected SignatureHeader size in Bytes.\r
	54	UINT32 SigHeaderSize;\r
	55	// Expected SignatureData size in Bytes.\r
	56	UINT32 SigDataSize;\r
	57	} EFI_SIGNATURE_ITEM;\r
0c18794e	58	\r
ed47ae02	59	typedef enum {\r
	60	AuthVarTypePk,\r
	61	AuthVarTypeKek,\r
	62	AuthVarTypePriv\r
	63	} AUTHVAR_TYPE;\r
	64	\r
	65	#pragma pack(1)\r
	66	typedef struct {\r
	67	EFI_GUID VendorGuid;\r
	68	UINT32 CertNodeSize;\r
	69	UINT32 NameSize;\r
	70	UINT32 CertDataSize;\r
	71	/// CHAR16 VariableName[NameSize];\r
	72	/// UINT8 CertData[CertDataSize];\r
	73	} AUTH_CERT_DB_DATA;\r
	74	#pragma pack()\r
	75	\r
0c18794e	76	/**\r
	77	Process variable with EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS/EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS set.\r
	78	\r
	79	@param[in] VariableName Name of Variable to be found.\r
	80	@param[in] VendorGuid Variable vendor GUID.\r
	81	\r
	82	@param[in] Data Data pointer.\r
	83	@param[in] DataSize Size of Data found. If size is less than the\r
	84	data, this value contains the required size.\r
	85	@param[in] Variable The variable information which is used to keep track of variable usage.\r
	86	@param[in] Attributes Attribute value of the variable.\r
	87	\r
	88	@return EFI_INVALID_PARAMETER Invalid parameter\r
	89	@return EFI_WRITE_PROTECTED Variable is write-protected and needs authentication with\r
	90	EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS set.\r
	91	@return EFI_SECURITY_VIOLATION The variable is with EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS\r
2d3fb919	92	set, but the AuthInfo does NOT pass the validation\r
2d3fb919	93	check carried out by the firmware.\r
0c18794e	94	@return EFI_SUCCESS Variable is not write-protected, or passed validation successfully.\r
	95	\r
	96	**/\r
	97	EFI_STATUS\r
	98	ProcessVariable (\r
	99	IN CHAR16 *VariableName,\r
	100	IN EFI_GUID *VendorGuid,\r
	101	IN VOID *Data,\r
	102	IN UINTN DataSize,\r
	103	IN VARIABLE_POINTER_TRACK *Variable,\r
	104	IN UINT32 Attributes\r
	105	);\r
	106	\r
2d3fb919	107	/**\r
	108	Update platform mode.\r
	109	\r
	110	@param[in] Mode SETUP_MODE or USER_MODE.\r
	111	\r
	112	@return EFI_INVALID_PARAMETER Invalid parameter.\r
	113	@return EFI_SUCCESS Update platform mode successfully.\r
	114	\r
	115	**/\r
	116	EFI_STATUS\r
	117	UpdatePlatformMode (\r
	118	IN UINT32 Mode\r
	119	);\r
	120	\r
0c18794e	121	/**\r
	122	Initializes for authenticated varibale service.\r
	123	\r
	124	@retval EFI_SUCCESS Function successfully executed.\r
	125	@retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resource.\r
	126	\r
	127	**/\r
	128	EFI_STATUS\r
	129	AutenticatedVariableServiceInitialize (\r
	130	VOID\r
	131	);\r
	132	\r
	133	/**\r
	134	Initializes for cryptlib service before use, include register algrithm and allocate scratch.\r
	135	\r
	136	**/\r
	137	VOID\r
	138	CryptLibraryInitialize (\r
	139	VOID\r
	140	);\r
	141	\r
d912bad7	142	/**\r
	143	Check input data form to make sure it is a valid EFI_SIGNATURE_LIST for PK/KEK variable.\r
	144	\r
	145	@param[in] VariableName Name of Variable to be check.\r
	146	@param[in] VendorGuid Variable vendor GUID.\r
	147	@param[in] Data Point to the variable data to be checked.\r
	148	@param[in] DataSize Size of Data.\r
	149	\r
	150	@return EFI_INVALID_PARAMETER Invalid signature list format.\r
	151	@return EFI_SUCCESS Passed signature list format check successfully.\r
	152	\r
	153	**/\r
	154	EFI_STATUS\r
	155	CheckSignatureListFormat(\r
	156	IN CHAR16 *VariableName,\r
	157	IN EFI_GUID *VendorGuid,\r
	158	IN VOID *Data,\r
	159	IN UINTN DataSize\r
	160	);\r
	161	\r
0c18794e	162	/**\r
	163	Process variable with platform key for verification.\r
	164	\r
	165	@param[in] VariableName Name of Variable to be found.\r
	166	@param[in] VendorGuid Variable vendor GUID.\r
	167	@param[in] Data Data pointer.\r
	168	@param[in] DataSize Size of Data found. If size is less than the\r
	169	data, this value contains the required size.\r
	170	@param[in] Variable The variable information which is used to keep track of variable usage.\r
	171	@param[in] Attributes Attribute value of the variable.\r
	172	@param[in] IsPk Indicate whether it is to process pk.\r
	173	\r
	174	@return EFI_INVALID_PARAMETER Invalid parameter\r
2d3fb919	175	@return EFI_SECURITY_VIOLATION The variable does NOT pass the validation\r
2d3fb919	176	check carried out by the firmware.\r
0c18794e	177	@return EFI_SUCCESS Variable passed validation successfully.\r
	178	\r
	179	**/\r
	180	EFI_STATUS\r
	181	ProcessVarWithPk (\r
	182	IN CHAR16 *VariableName,\r
	183	IN EFI_GUID *VendorGuid,\r
	184	IN VOID *Data,\r
	185	IN UINTN DataSize,\r
	186	IN VARIABLE_POINTER_TRACK *Variable,\r
	187	IN UINT32 Attributes OPTIONAL,\r
	188	IN BOOLEAN IsPk\r
	189	);\r
	190	\r
	191	/**\r
	192	Process variable with key exchange key for verification.\r
	193	\r
	194	@param[in] VariableName Name of Variable to be found.\r
	195	@param[in] VendorGuid Variable vendor GUID.\r
	196	@param[in] Data Data pointer.\r
	197	@param[in] DataSize Size of Data found. If size is less than the\r
	198	data, this value contains the required size.\r
	199	@param[in] Variable The variable information that is used to keep track of variable usage.\r
	200	@param[in] Attributes Attribute value of the variable.\r
	201	\r
	202	@return EFI_INVALID_PARAMETER Invalid parameter.\r
2d3fb919	203	@return EFI_SECURITY_VIOLATION The variable does NOT pass the validation\r
2d3fb919	204	check carried out by the firmware.\r
0c18794e	205	@return EFI_SUCCESS Variable passed validation successfully.\r
	206	\r
	207	**/\r
	208	EFI_STATUS\r
	209	ProcessVarWithKek (\r
	210	IN CHAR16 *VariableName,\r
	211	IN EFI_GUID *VendorGuid,\r
	212	IN VOID *Data,\r
	213	IN UINTN DataSize,\r
	214	IN VARIABLE_POINTER_TRACK *Variable,\r
	215	IN UINT32 Attributes OPTIONAL\r
	216	);\r
	217	\r
2d3fb919	218	/**\r
	219	Merge two buffers which formatted as EFI_SIGNATURE_LIST. Only the new EFI_SIGNATURE_DATA\r
	220	will be appended to the original EFI_SIGNATURE_LIST, duplicate EFI_SIGNATURE_DATA\r
	221	will be ignored.\r
	222	\r
	223	@param[in, out] Data Pointer to original EFI_SIGNATURE_LIST.\r
	224	@param[in] DataSize Size of Data buffer.\r
	225	@param[in] NewData Pointer to new EFI_SIGNATURE_LIST to be appended.\r
	226	@param[in] NewDataSize Size of NewData buffer.\r
	227	\r
	228	@return Size of the merged buffer.\r
	229	\r
	230	**/\r
	231	UINTN\r
	232	AppendSignatureList (\r
	233	IN OUT VOID *Data,\r
	234	IN UINTN DataSize,\r
	235	IN VOID *NewData,\r
	236	IN UINTN NewDataSize\r
	237	);\r
	238	\r
0c18794e	239	/**\r
	240	Compare two EFI_TIME data.\r
	241	\r
	242	\r
	243	@param FirstTime A pointer to the first EFI_TIME data.\r
	244	@param SecondTime A pointer to the second EFI_TIME data.\r
	245	\r
	246	@retval TRUE The FirstTime is not later than the SecondTime.\r
	247	@retval FALSE The FirstTime is later than the SecondTime.\r
	248	\r
	249	**/\r
	250	BOOLEAN\r
	251	CompareTimeStamp (\r
	252	IN EFI_TIME *FirstTime,\r
	253	IN EFI_TIME *SecondTime\r
	254	);\r
	255	\r
	256	\r
	257	/**\r
	258	Process variable with EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS set\r
	259	\r
	260	@param[in] VariableName Name of Variable to be found.\r
	261	@param[in] VendorGuid Variable vendor GUID.\r
	262	@param[in] Data Data pointer.\r
	263	@param[in] DataSize Size of Data found. If size is less than the\r
	264	data, this value contains the required size.\r
	265	@param[in] Variable The variable information which is used to keep track of variable usage.\r
	266	@param[in] Attributes Attribute value of the variable.\r
ed47ae02	267	@param[in] AuthVarType Verify against PK or KEK database or private database.\r
0c18794e	268	@param[out] VarDel Delete the variable or not.\r
	269	\r
	270	@retval EFI_INVALID_PARAMETER Invalid parameter.\r
2d3fb919	271	@retval EFI_SECURITY_VIOLATION The variable does NOT pass the validation\r
2d3fb919	272	check carried out by the firmware.\r
0c18794e	273	@retval EFI_OUT_OF_RESOURCES Failed to process variable due to lack\r
	274	of resources.\r
	275	@retval EFI_SUCCESS Variable pass validation successfully.\r
	276	\r
	277	**/\r
	278	EFI_STATUS\r
	279	VerifyTimeBasedPayload (\r
	280	IN CHAR16 *VariableName,\r
	281	IN EFI_GUID *VendorGuid,\r
	282	IN VOID *Data,\r
	283	IN UINTN DataSize,\r
	284	IN VARIABLE_POINTER_TRACK *Variable,\r
	285	IN UINT32 Attributes,\r
ed47ae02	286	IN AUTHVAR_TYPE AuthVarType,\r
0c18794e	287	OUT BOOLEAN *VarDel\r
	288	);\r
	289	\r
	290	extern UINT8 mPubKeyStore[MAX_KEYDB_SIZE];\r
	291	extern UINT32 mPubKeyNumber;\r
	292	extern VOID *mHashCtx;\r
	293	extern VOID *mStorageArea;\r
2d3fb919	294	extern UINT8 *mSerializationRuntimeBuffer;\r
2d3fb919	295	\r
0c18794e	296	#endif\r