[mirror_edk2.git] / CryptoPkg / Library / BaseCryptLibRuntimeCryptProtocol / RuntimeDxeIpfCryptLib.c

/** @file\r
  Implementation of The runtime cryptographic library instance (for IPF).\r
\r
Copyright (c) 2010 - 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
#include <Uefi.h>\r
\r
#include <Library/BaseLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
#include <Library/UefiRuntimeLib.h>\r
\r
#include <Protocol/RuntimeCrypt.h>\r
\r
#include <Guid/EventGroup.h>\r
\r
EFI_RUNTIME_CRYPT_PROTOCOL  *mCryptProtocol = NULL;\r
EFI_EVENT                   mIpfCryptLibVirtualNotifyEvent;\r
\r
/**\r
  Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE, which converts\r
  pointer to new virtual address.\r
\r
  @param  Event        Event whose notification function is being invoked.\r
  @param  Context      Pointer to the notification function's context\r
\r
**/\r
VOID\r
EFIAPI\r
IpfCryptLibAddressChangeEvent (\r
  IN  EFI_EVENT        Event,\r
  IN  VOID             *Context\r
  )\r
{\r
  //\r
  // Convert Address of Runtime Crypto Protocol.\r
  //\r
  EfiConvertPointer (0x0, (VOID **) &mCryptProtocol);\r
}\r
\r
/**\r
  Constructor of IPF Crypto Library Instance.\r
  This function locates the Runtime Crypt Protocol and register notification\r
  function for EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r
\r
  @param  ImageHandle   The firmware allocated handle for the EFI image.\r
  @param  SystemTable   A pointer to the EFI System Table.\r
\r
  @retval EFI_SUCCESS   The constructor always returns EFI_SUCCESS.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
RuntimeDxeIpfCryptLibConstructor (\r
  IN      EFI_HANDLE                ImageHandle,\r
  IN      EFI_SYSTEM_TABLE          *SystemTable\r
  )\r
{\r
  EFI_STATUS  Status;\r
\r
  //\r
  // Locate Runtime Crypt Protocol Instance\r
  //\r
  Status = gBS->LocateProtocol (\r
                  &gEfiRuntimeCryptProtocolGuid,\r
                  NULL,\r
                  (VOID**) &mCryptProtocol\r
                  );\r
  ASSERT_EFI_ERROR (Status);\r
  ASSERT (mCryptProtocol != NULL);\r
\r
  //\r
  // Register SetVirtualAddressMap () notify function\r
  //\r
  Status = gBS->CreateEventEx (\r
                  EVT_NOTIFY_SIGNAL,\r
                  TPL_NOTIFY,\r
                  IpfCryptLibAddressChangeEvent,\r
                  NULL,\r
                  &gEfiEventVirtualAddressChangeGuid,\r
                  &mIpfCryptLibVirtualNotifyEvent\r
                  );\r
  ASSERT_EFI_ERROR (Status);\r
\r
  return Status;\r
}\r
\r
/**\r
  Destructor of IPF Crypto Library Instance.\r
\r
  @param  ImageHandle   The firmware allocated handle for the EFI image.\r
  @param  SystemTable   A pointer to the EFI System Table.\r
\r
  @retval EFI_SUCCESS   The destructor completed successfully.\r
  @retval Other value   The destructor did not complete successfully.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
RuntimeDxeIpfCryptLibDestructor (\r
  IN EFI_HANDLE        ImageHandle,\r
  IN EFI_SYSTEM_TABLE  *SystemTable\r
  )\r
{\r
  EFI_STATUS  Status;\r
\r
  //\r
  // Close the Set Virtual Address Map event\r
  //\r
  Status = gBS->CloseEvent (mIpfCryptLibVirtualNotifyEvent);\r
  ASSERT_EFI_ERROR (Status);\r
\r
  return Status;\r
}\r
\r
/**\r
  Check whether crypto service provided by Runtime Crypt protocol is ready to use.\r
\r
  Crypto service is available if the call is in physical mode prior to\r
  SetVirtualAddressMap() or virtual mode after SetVirtualAddressMap(). If either\r
  of these two conditions are met, this routine will return TRUE; if neither of\r
  these conditions are met, this routine will return FALSE.\r
\r
  @retval TRUE   The Crypto service is ready to use.\r
  @retval FALSE  The Crypto service is not available.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
InternalIsCryptServiveAvailable (\r
  VOID\r
  )\r
{\r
  INT64    CpuMode;\r
  BOOLEAN  GoneVirtual;\r
\r
  CpuMode = AsmCpuVirtual();\r
  if (CpuMode < 0) {\r
    //\r
    // CPU is in mixed mode, return failing the operation gracefully.\r
    //\r
    return FALSE;\r
  }\r
\r
  GoneVirtual = EfiGoneVirtual();\r
\r
  if ((CpuMode > 0) && !GoneVirtual) {\r
    //\r
    // CPU is in virtual mode, but SetVirtualAddressMap() has not been called,\r
    // so return failing the operation gracefully.\r
    //\r
    return FALSE;\r
  }\r
\r
  if ((CpuMode == 0) && GoneVirtual) {\r
    //\r
    // CPU is in physical mode, but SetVirtualAddressMap() has been called,\r
    // so return failing the operation gracefully.\r
    //\r
    return FALSE;\r
  }\r
\r
  return TRUE;\r
}\r
\r
/**\r
  Retrieves the size, in bytes, of the context buffer required for SHA-256 operations.\r
\r
  @return  The size, in bytes, of the context buffer required for SHA-256 operations.\r
\r
**/\r
UINTN\r
EFIAPI\r
Sha256GetContextSize (\r
  VOID\r
  )\r
{\r
  if (!InternalIsCryptServiveAvailable ()) {\r
    return 0;\r
  }\r
\r
  return mCryptProtocol->Sha256GetContextSize ();\r
}\r
\r
/**\r
  Initializes user-supplied memory pointed by Sha256Context as SHA-256 hash context for\r
  subsequent use.\r
\r
  If Sha256Context is NULL, then return FALSE.\r
\r
  @param[in, out]  Sha256Context  Pointer to SHA-256 Context being initialized.\r
\r
  @retval TRUE   SHA-256 context initialization succeeded.\r
  @retval FALSE  SHA-256 context initialization failed.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
Sha256Init (\r
  IN OUT  VOID  *Sha256Context\r
  )\r
{\r
  if (!InternalIsCryptServiveAvailable ()) {\r
    return FALSE;\r
  }\r
\r
  return mCryptProtocol->Sha256Init (Sha256Context);\r
}\r
\r
\r
/**\r
  Performs SHA-256 digest on a data buffer of the specified length. This function can\r
  be called multiple times to compute the digest of long or discontinuous data streams.\r
\r
  If Sha256Context is NULL, then return FALSE.\r
\r
  @param[in, out]  Sha256Context  Pointer to the SHA-256 context.\r
  @param[in]       Data           Pointer to the buffer containing the data to be hashed.\r
  @param[in]       DataLength     Length of Data buffer in bytes.\r
\r
  @retval TRUE   SHA-256 data digest succeeded.\r
  @retval FALSE  Invalid SHA-256 context. After Sha256Final function has been called, the\r
                 SHA-256 context cannot be reused.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
Sha256Update (\r
  IN OUT  VOID        *Sha256Context,\r
  IN      CONST VOID  *Data,\r
  IN      UINTN       DataLength\r
  )\r
{\r
  if (!InternalIsCryptServiveAvailable ()) {\r
    return FALSE;\r
  }\r
\r
  return mCryptProtocol->Sha256Update (Sha256Context, Data, DataLength);\r
}\r
\r
/**\r
  Completes SHA-256 hash computation and retrieves the digest value into the specified\r
  memory. After this function has been called, the SHA-256 context cannot be used again.\r
\r
  If Sha256Context is NULL, then return FALSE.\r
  If HashValue is NULL, then return FALSE.\r
\r
  @param[in, out]  Sha256Context  Pointer to SHA-256 context\r
  @param[out]      HashValue      Pointer to a buffer that receives the SHA-256 digest\r
                                  value (32 bytes).\r
\r
  @retval TRUE   SHA-256 digest computation succeeded.\r
  @retval FALSE  SHA-256 digest computation failed.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
Sha256Final (\r
  IN OUT  VOID   *Sha256Context,\r
  OUT     UINT8  *HashValue\r
  )\r
{\r
  if (!InternalIsCryptServiveAvailable ()) {\r
    return FALSE;\r
  }\r
\r
  return mCryptProtocol->Sha256Final (Sha256Context, HashValue);\r
}\r
\r
/**\r
  Allocates and Initializes one RSA Context for subsequent use.\r
\r
  @return  Pointer to the RSA Context that has been initialized.\r
           If the allocations fails, RsaNew() returns NULL.\r
\r
**/\r
VOID *\r
EFIAPI\r
RsaNew (\r
  VOID\r
  )\r
{\r
  if (!InternalIsCryptServiveAvailable ()) {\r
    return FALSE;\r
  }\r
\r
  return mCryptProtocol->RsaNew ();\r
}\r
\r
/**\r
  Release the specified RSA Context.\r
\r
  @param[in]  RsaContext  Pointer to the RSA context to be released.\r
\r
**/\r
VOID\r
EFIAPI\r
RsaFree (\r
  IN  VOID  *RsaContext\r
  )\r
{\r
  if (!InternalIsCryptServiveAvailable ()) {\r
    return;\r
  }\r
\r
  mCryptProtocol->RsaFree (RsaContext);\r
}\r
\r
/**\r
  Sets the tag-designated RSA key component into the established RSA context from\r
  the user-specified nonnegative integer (octet string format represented in RSA\r
  PKCS#1).\r
\r
  If RsaContext is NULL, then return FALSE.\r
\r
  @param[in, out]  RsaContext  Pointer to RSA context being set.\r
  @param[in]       KeyTag      Tag of RSA key component being set.\r
  @param[in]       BigNumber   Pointer to octet integer buffer.\r
  @param[in]       BnLength    Length of big number buffer in bytes.\r
\r
  @return  TRUE   RSA key component was set successfully.\r
  @return  FALSE  Invalid RSA key component tag.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
RsaSetKey (\r
  IN OUT VOID         *RsaContext,\r
  IN     RSA_KEY_TAG  KeyTag,\r
  IN     CONST UINT8  *BigNumber,\r
  IN     UINTN        BnLength\r
  )\r
{\r
  if (!InternalIsCryptServiveAvailable ()) {\r
    return FALSE;\r
  }\r
\r
  return mCryptProtocol->RsaSetKey (RsaContext, KeyTag, BigNumber, BnLength);\r
}\r
\r
/**\r
  Verifies the RSA-SSA signature with EMSA-PKCS1-v1_5 encoding scheme defined in\r
  RSA PKCS#1.\r
\r
  If RsaContext is NULL, then return FALSE.\r
  If MessageHash is NULL, then return FALSE.\r
  If Signature is NULL, then return FALSE.\r
  If HashLength is not equal to the size of MD5, SHA-1 or SHA-256 digest, then return FALSE.\r
\r
  @param[in]  RsaContext   Pointer to RSA context for signature verification.\r
  @param[in]  MessageHash  Pointer to octet message hash to be checked.\r
  @param[in]  HashLength   Length of the message hash in bytes.\r
  @param[in]  Signature    Pointer to RSA PKCS1-v1_5 signature to be verified.\r
  @param[in]  SigLength    Length of signature in bytes.\r
\r
  @return  TRUE   Valid signature encoded in PKCS1-v1_5.\r
  @return  FALSE  Invalid signature or invalid RSA context.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
RsaPkcs1Verify (\r
  IN  VOID         *RsaContext,\r
  IN  CONST UINT8  *MessageHash,\r
  IN  UINTN        HashLength,\r
  IN  UINT8        *Signature,\r
  IN  UINTN        SigLength\r
  )\r
{\r
  if (!InternalIsCryptServiveAvailable ()) {\r
    return FALSE;\r
  }\r
\r
  return mCryptProtocol->RsaPkcs1Verify (\r
                           RsaContext,\r
                           MessageHash,\r
                           HashLength,\r
                           Signature,\r
                           SigLength\r
                           );\r
}\r
Commit	Line	Data
97f98500 HT	1	/** @file\r
	2	Implementation of The runtime cryptographic library instance (for IPF).\r
	3	\r
16d2c32c	4	Copyright (c) 2010 - 2012, Intel Corporation. All rights reserved.<BR>\r
97f98500 HT	5	This program and the accompanying materials\r
	6	are licensed and made available under the terms and conditions of the BSD License\r
	7	which accompanies this distribution. The full text of the license may be found at\r
	8	http://opensource.org/licenses/bsd-license.php\r
	9	\r
	10	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	11	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	12	\r
	13	**/\r
	14	\r
	15	#include <Uefi.h>\r
	16	\r
	17	#include <Library/BaseLib.h>\r
	18	#include <Library/DebugLib.h>\r
	19	#include <Library/UefiBootServicesTableLib.h>\r
	20	#include <Library/UefiRuntimeLib.h>\r
	21	\r
	22	#include <Protocol/RuntimeCrypt.h>\r
	23	\r
	24	#include <Guid/EventGroup.h>\r
	25	\r
	26	EFI_RUNTIME_CRYPT_PROTOCOL *mCryptProtocol = NULL;\r
	27	EFI_EVENT mIpfCryptLibVirtualNotifyEvent;\r
	28	\r
	29	/**\r
	30	Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE, which converts\r
	31	pointer to new virtual address.\r
	32	\r
	33	@param Event Event whose notification function is being invoked.\r
	34	@param Context Pointer to the notification function's context\r
	35	\r
	36	**/\r
	37	VOID\r
	38	EFIAPI\r
	39	IpfCryptLibAddressChangeEvent (\r
	40	IN EFI_EVENT Event,\r
	41	IN VOID *Context\r
	42	)\r
	43	{\r
	44	//\r
	45	// Convert Address of Runtime Crypto Protocol.\r
	46	//\r
	47	EfiConvertPointer (0x0, (VOID **) &mCryptProtocol);\r
	48	}\r
	49	\r
	50	/**\r
	51	Constructor of IPF Crypto Library Instance.\r
	52	This function locates the Runtime Crypt Protocol and register notification\r
	53	function for EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r
	54	\r
	55	@param ImageHandle The firmware allocated handle for the EFI image.\r
	56	@param SystemTable A pointer to the EFI System Table.\r
	57	\r
	58	@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.\r
	59	\r
	60	**/\r
	61	EFI_STATUS\r
	62	EFIAPI\r
	63	RuntimeDxeIpfCryptLibConstructor (\r
	64	IN EFI_HANDLE ImageHandle,\r
	65	IN EFI_SYSTEM_TABLE *SystemTable\r
	66	)\r
	67	{\r
	68	EFI_STATUS Status;\r
69	\r
70	//\r
71	// Locate Runtime Crypt Protocol Instance\r
72	//\r
73	Status = gBS->LocateProtocol (\r
74	&gEfiRuntimeCryptProtocolGuid,\r
75	NULL,\r
76	(VOID**) &mCryptProtocol\r
77	);\r
78	ASSERT_EFI_ERROR (Status);\r
79	ASSERT (mCryptProtocol != NULL);\r
80	\r
81	//\r
82	// Register SetVirtualAddressMap () notify function\r
83	//\r
84	Status = gBS->CreateEventEx (\r
85	EVT_NOTIFY_SIGNAL,\r
86	TPL_NOTIFY,\r
87	IpfCryptLibAddressChangeEvent,\r
88	NULL,\r
89	&gEfiEventVirtualAddressChangeGuid,\r
90	&mIpfCryptLibVirtualNotifyEvent\r
91	);\r
92	ASSERT_EFI_ERROR (Status);\r
93	\r
94	return Status;\r
95	}\r
96	\r
97	/**\r
98	Destructor of IPF Crypto Library Instance.\r
99	\r
100	@param ImageHandle The firmware allocated handle for the EFI image.\r
101	@param SystemTable A pointer to the EFI System Table.\r
102	\r
103	@retval EFI_SUCCESS The destructor completed successfully.\r
104	@retval Other value The destructor did not complete successfully.\r
105	\r
106	**/\r
107	EFI_STATUS\r
108	EFIAPI\r
109	RuntimeDxeIpfCryptLibDestructor (\r
110	IN EFI_HANDLE ImageHandle,\r
111	IN EFI_SYSTEM_TABLE *SystemTable\r
112	)\r
113	{\r
114	EFI_STATUS Status;\r
115	\r
116	//\r
117	// Close the Set Virtual Address Map event\r
118	//\r
119	Status = gBS->CloseEvent (mIpfCryptLibVirtualNotifyEvent);\r
120	ASSERT_EFI_ERROR (Status);\r
121	\r
122	return Status;\r
123	}\r
124	\r
125	/**\r
126	Check whether crypto service provided by Runtime Crypt protocol is ready to use.\r
127	\r
128	Crypto service is available if the call is in physical mode prior to\r
129	SetVirtualAddressMap() or virtual mode after SetVirtualAddressMap(). If either\r
130	of these two conditions are met, this routine will return TRUE; if neither of\r
131	these conditions are met, this routine will return FALSE.\r
132	\r
133	@retval TRUE The Crypto service is ready to use.\r
134	@retval FALSE The Crypto service is not available.\r
135	\r
136	**/\r
137	BOOLEAN\r
138	EFIAPI\r
139	InternalIsCryptServiveAvailable (\r
140	VOID\r
141	)\r
142	{\r
143	INT64 CpuMode;\r
144	BOOLEAN GoneVirtual;\r
145	\r
146	CpuMode = AsmCpuVirtual();\r
147	if (CpuMode < 0) {\r
148	//\r
149	// CPU is in mixed mode, return failing the operation gracefully.\r
150	//\r
151	return FALSE;\r
152	}\r
153	\r
154	GoneVirtual = EfiGoneVirtual();\r
155	\r
156	if ((CpuMode > 0) && !GoneVirtual) {\r
157	//\r
158	// CPU is in virtual mode, but SetVirtualAddressMap() has not been called,\r
159	// so return failing the operation gracefully.\r
160	//\r
161	return FALSE;\r
162	}\r
163	\r
164	if ((CpuMode == 0) && GoneVirtual) {\r
165	//\r
166	// CPU is in physical mode, but SetVirtualAddressMap() has been called,\r
167	// so return failing the operation gracefully.\r
168	//\r
169	return FALSE;\r
170	}\r
171	\r
172	return TRUE;\r
173	}\r
174	\r
175	/**\r
176	Retrieves the size, in bytes, of the context buffer required for SHA-256 operations.\r
177	\r
178	@return The size, in bytes, of the context buffer required for SHA-256 operations.\r
179	\r
180	**/\r
181	UINTN\r
182	EFIAPI\r
183	Sha256GetContextSize (\r
184	VOID\r
185	)\r
186	{\r
187	if (!InternalIsCryptServiveAvailable ()) {\r
188	return 0;\r
189	}\r
190	\r
191	return mCryptProtocol->Sha256GetContextSize ();\r
192	}\r
193	\r
194	/**\r
195	Initializes user-supplied memory pointed by Sha256Context as SHA-256 hash context for\r
196	subsequent use.\r
197	\r
16d2c32c	198	If Sha256Context is NULL, then return FALSE.\r
97f98500 HT	199	\r
	200	@param[in, out] Sha256Context Pointer to SHA-256 Context being initialized.\r
	201	\r
	202	@retval TRUE SHA-256 context initialization succeeded.\r
	203	@retval FALSE SHA-256 context initialization failed.\r
	204	\r
	205	**/\r
	206	BOOLEAN\r
	207	EFIAPI\r
	208	Sha256Init (\r
	209	IN OUT VOID *Sha256Context\r
	210	)\r
	211	{\r
	212	if (!InternalIsCryptServiveAvailable ()) {\r
	213	return FALSE;\r
	214	}\r
	215	\r
	216	return mCryptProtocol->Sha256Init (Sha256Context);\r
	217	}\r
	218	\r
	219	\r
	220	/**\r
	221	Performs SHA-256 digest on a data buffer of the specified length. This function can\r
	222	be called multiple times to compute the digest of long or discontinuous data streams.\r
	223	\r
16d2c32c	224	If Sha256Context is NULL, then return FALSE.\r
97f98500 HT	225	\r
	226	@param[in, out] Sha256Context Pointer to the SHA-256 context.\r
	227	@param[in] Data Pointer to the buffer containing the data to be hashed.\r
	228	@param[in] DataLength Length of Data buffer in bytes.\r
	229	\r
	230	@retval TRUE SHA-256 data digest succeeded.\r
	231	@retval FALSE Invalid SHA-256 context. After Sha256Final function has been called, the\r
	232	SHA-256 context cannot be reused.\r
	233	\r
	234	**/\r
	235	BOOLEAN\r
	236	EFIAPI\r
	237	Sha256Update (\r
	238	IN OUT VOID *Sha256Context,\r
	239	IN CONST VOID *Data,\r
	240	IN UINTN DataLength\r
	241	)\r
	242	{\r
	243	if (!InternalIsCryptServiveAvailable ()) {\r
	244	return FALSE;\r
	245	}\r
	246	\r
	247	return mCryptProtocol->Sha256Update (Sha256Context, Data, DataLength);\r
	248	}\r
	249	\r
	250	/**\r
	251	Completes SHA-256 hash computation and retrieves the digest value into the specified\r
	252	memory. After this function has been called, the SHA-256 context cannot be used again.\r
	253	\r
16d2c32c	254	If Sha256Context is NULL, then return FALSE.\r
16d2c32c	255	If HashValue is NULL, then return FALSE.\r
97f98500 HT	256	\r
	257	@param[in, out] Sha256Context Pointer to SHA-256 context\r
	258	@param[out] HashValue Pointer to a buffer that receives the SHA-256 digest\r
	259	value (32 bytes).\r
	260	\r
	261	@retval TRUE SHA-256 digest computation succeeded.\r
	262	@retval FALSE SHA-256 digest computation failed.\r
	263	\r
	264	**/\r
	265	BOOLEAN\r
	266	EFIAPI\r
	267	Sha256Final (\r
	268	IN OUT VOID *Sha256Context,\r
	269	OUT UINT8 *HashValue\r
	270	)\r
	271	{\r
	272	if (!InternalIsCryptServiveAvailable ()) {\r
	273	return FALSE;\r
	274	}\r
	275	\r
	276	return mCryptProtocol->Sha256Final (Sha256Context, HashValue);\r
	277	}\r
	278	\r
	279	/**\r
	280	Allocates and Initializes one RSA Context for subsequent use.\r
	281	\r
	282	@return Pointer to the RSA Context that has been initialized.\r
	283	If the allocations fails, RsaNew() returns NULL.\r
	284	\r
	285	**/\r
	286	VOID *\r
	287	EFIAPI\r
	288	RsaNew (\r
	289	VOID\r
	290	)\r
	291	{\r
	292	if (!InternalIsCryptServiveAvailable ()) {\r
	293	return FALSE;\r
	294	}\r
	295	\r
	296	return mCryptProtocol->RsaNew ();\r
	297	}\r
	298	\r
	299	/**\r
	300	Release the specified RSA Context.\r
	301	\r
	302	@param[in] RsaContext Pointer to the RSA context to be released.\r
	303	\r
	304	**/\r
	305	VOID\r
	306	EFIAPI\r
	307	RsaFree (\r
	308	IN VOID *RsaContext\r
	309	)\r
	310	{\r
	311	if (!InternalIsCryptServiveAvailable ()) {\r
	312	return;\r
	313	}\r
	314	\r
	315	mCryptProtocol->RsaFree (RsaContext);\r
	316	}\r
	317	\r
	318	/**\r
	319	Sets the tag-designated RSA key component into the established RSA context from\r
320	the user-specified nonnegative integer (octet string format represented in RSA\r
321	PKCS#1).\r
322	\r
16d2c32c	323	If RsaContext is NULL, then return FALSE.\r
97f98500 HT	324	\r
	325	@param[in, out] RsaContext Pointer to RSA context being set.\r
	326	@param[in] KeyTag Tag of RSA key component being set.\r
	327	@param[in] BigNumber Pointer to octet integer buffer.\r
	328	@param[in] BnLength Length of big number buffer in bytes.\r
	329	\r
	330	@return TRUE RSA key component was set successfully.\r
	331	@return FALSE Invalid RSA key component tag.\r
	332	\r
	333	**/\r
	334	BOOLEAN\r
	335	EFIAPI\r
	336	RsaSetKey (\r
	337	IN OUT VOID *RsaContext,\r
	338	IN RSA_KEY_TAG KeyTag,\r
	339	IN CONST UINT8 *BigNumber,\r
	340	IN UINTN BnLength\r
	341	)\r
	342	{\r
	343	if (!InternalIsCryptServiveAvailable ()) {\r
	344	return FALSE;\r
	345	}\r
	346	\r
	347	return mCryptProtocol->RsaSetKey (RsaContext, KeyTag, BigNumber, BnLength);\r
	348	}\r
	349	\r
	350	/**\r
	351	Verifies the RSA-SSA signature with EMSA-PKCS1-v1_5 encoding scheme defined in\r
	352	RSA PKCS#1.\r
	353	\r
16d2c32c	354	If RsaContext is NULL, then return FALSE.\r
	355	If MessageHash is NULL, then return FALSE.\r
	356	If Signature is NULL, then return FALSE.\r
	357	If HashLength is not equal to the size of MD5, SHA-1 or SHA-256 digest, then return FALSE.\r
97f98500 HT	358	\r
	359	@param[in] RsaContext Pointer to RSA context for signature verification.\r
	360	@param[in] MessageHash Pointer to octet message hash to be checked.\r
	361	@param[in] HashLength Length of the message hash in bytes.\r
	362	@param[in] Signature Pointer to RSA PKCS1-v1_5 signature to be verified.\r
	363	@param[in] SigLength Length of signature in bytes.\r
	364	\r
	365	@return TRUE Valid signature encoded in PKCS1-v1_5.\r
	366	@return FALSE Invalid signature or invalid RSA context.\r
	367	\r
	368	**/\r
	369	BOOLEAN\r
	370	EFIAPI\r
	371	RsaPkcs1Verify (\r
	372	IN VOID *RsaContext,\r
	373	IN CONST UINT8 *MessageHash,\r
	374	IN UINTN HashLength,\r
	375	IN UINT8 *Signature,\r
	376	IN UINTN SigLength\r
	377	)\r
	378	{\r
	379	if (!InternalIsCryptServiveAvailable ()) {\r
	380	return FALSE;\r
	381	}\r
	382	\r
	383	return mCryptProtocol->RsaPkcs1Verify (\r
	384	RsaContext,\r
	385	MessageHash,\r
	386	HashLength,\r
	387	Signature,\r
	388	SigLength\r
	389	);\r
	390	}\r