OpenSSL-1.1.xx makes most data structures opaque.
This patch updated HMAC Wrapper implementation with opaque
HMAC_CTX object.
The HmacXXGetContextSize() is marked as deprecated, and updated
to use the fixed HMAC_CTX size, which is just kept for compatibility.
New APIs (HmacXXNew(), HmacXXFree()) were added as the recommended
HMAC_CTX usage interfaces for HMAC-XXXX operations.
Cc: Ting Ye <ting.ye@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Gary Lin <glin@suse.com>
Cc: Ronald Cron <ronald.cron@arm.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Qin Long <qin.long@intel.com>
Reviewed-by: Ting Ye <ting.ye@intel.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
primitives (Hash Serials, HMAC, RSA, Diffie-Hellman, etc) for UEFI security\r
functionality enabling.\r
\r
-Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2009 - 2017, 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
\r
/**\r
Retrieves the size, in bytes, of the context buffer required for HMAC-MD5 operations.\r
+ (NOTE: This API is deprecated.\r
+ Use HmacMd5New() / HmacMd5Free() for HMAC-MD5 Context operations.)\r
\r
If this interface is not supported, then return zero.\r
\r
VOID\r
);\r
\r
+/**\r
+ Allocates and initializes one HMAC_CTX context for subsequent HMAC-MD5 use.\r
+\r
+ If this interface is not supported, then return NULL.\r
+\r
+ @return Pointer to the HMAC_CTX context that has been initialized.\r
+ If the allocations fails, HmacMd5New() returns NULL.\r
+ @retval NULL This interface is not supported.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+HmacMd5New (\r
+ VOID\r
+ );\r
+\r
+/**\r
+ Release the specified HMAC_CTX context.\r
+\r
+ If this interface is not supported, then do nothing.\r
+\r
+ @param[in] HmacMd5Ctx Pointer to the HMAC_CTX context to be released.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+HmacMd5Free (\r
+ IN VOID *HmacMd5Ctx\r
+ );\r
+\r
/**\r
Initializes user-supplied memory pointed by HmacMd5Context as HMAC-MD5 context for\r
subsequent use.\r
\r
/**\r
Retrieves the size, in bytes, of the context buffer required for HMAC-SHA1 operations.\r
+ (NOTE: This API is deprecated.\r
+ Use HmacSha1New() / HmacSha1Free() for HMAC-SHA1 Context operations.)\r
\r
If this interface is not supported, then return zero.\r
\r
VOID\r
);\r
\r
+/**\r
+ Allocates and initializes one HMAC_CTX context for subsequent HMAC-SHA1 use.\r
+\r
+ If this interface is not supported, then return NULL.\r
+\r
+ @return Pointer to the HMAC_CTX context that has been initialized.\r
+ If the allocations fails, HmacSha1New() returns NULL.\r
+ @return NULL This interface is not supported.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+HmacSha1New (\r
+ VOID\r
+ );\r
+\r
+/**\r
+ Release the specified HMAC_CTX context.\r
+\r
+ If this interface is not supported, then do nothing.\r
+\r
+ @param[in] HmacSha1Ctx Pointer to the HMAC_CTX context to be released.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+HmacSha1Free (\r
+ IN VOID *HmacSha1Ctx\r
+ );\r
+\r
/**\r
Initializes user-supplied memory pointed by HmacSha1Context as HMAC-SHA1 context for\r
subsequent use.\r
\r
/**\r
Retrieves the size, in bytes, of the context buffer required for HMAC-SHA256 operations.\r
+ (NOTE: This API is deprecated.\r
+ Use HmacSha256New() / HmacSha256Free() for HMAC-SHA256 Context operations.)\r
\r
If this interface is not supported, then return zero.\r
\r
VOID\r
);\r
\r
+/**\r
+ Allocates and initializes one HMAC_CTX context for subsequent HMAC-SHA256 use.\r
+\r
+ @return Pointer to the HMAC_CTX context that has been initialized.\r
+ If the allocations fails, HmacSha256New() returns NULL.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+HmacSha256New (\r
+ VOID\r
+ );\r
+\r
+/**\r
+ Release the specified HMAC_CTX context.\r
+\r
+ @param[in] HmacSha256Ctx Pointer to the HMAC_CTX context to be released.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+HmacSha256Free (\r
+ IN VOID *HmacSha256Ctx\r
+ );\r
+\r
/**\r
Initializes user-supplied memory pointed by HmacSha256Context as HMAC-SHA256 context for\r
subsequent use.\r
/** @file\r
HMAC-MD5 Wrapper Implementation over OpenSSL.\r
\r
-Copyright (c) 2010 - 2012, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2010 - 2017, 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
#include "InternalCryptLib.h"\r
#include <openssl/hmac.h>\r
\r
+#define HMAC_MD5_CTX_SIZE sizeof(void *) * 4 + sizeof(unsigned int) + \\r
+ sizeof(unsigned char) * HMAC_MAX_MD_CBLOCK\r
+\r
/**\r
Retrieves the size, in bytes, of the context buffer required for HMAC-MD5 operations.\r
+ (NOTE: This API is deprecated.\r
+ Use HmacMd5New() / HmacMd5Free() for HMAC-MD5 Context operations.)\r
\r
@return The size, in bytes, of the context buffer required for HMAC-MD5 operations.\r
\r
{\r
//\r
// Retrieves the OpenSSL HMAC-MD5 Context Size\r
+ // NOTE: HMAC_CTX object was made opaque in openssl-1.1.x, here we just use the\r
+ // fixed size as a workaround to make this API work for compatibility.\r
+ // We should retire HmacMd5GetContextSize() in future, and use HmacMd5New()\r
+ // and HmacMd5Free() for context allocation and release.\r
//\r
- return (UINTN) (sizeof (HMAC_CTX));\r
+ return (UINTN) HMAC_MD5_CTX_SIZE;\r
+}\r
+\r
+/**\r
+ Allocates and initializes one HMAC_CTX context for subsequent HMAC-MD5 use.\r
+\r
+ @return Pointer to the HMAC_CTX context that has been initialized.\r
+ If the allocations fails, HmacMd5New() returns NULL.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+HmacMd5New (\r
+ VOID\r
+ )\r
+{\r
+ //\r
+ // Allocates & Initializes HMAC_CTX Context by OpenSSL HMAC_CTX_new()\r
+ //\r
+ return (VOID *) HMAC_CTX_new ();\r
+}\r
+\r
+/**\r
+ Release the specified HMAC_CTX context.\r
+\r
+ @param[in] HmacMd5Ctx Pointer to the HMAC_CTX context to be released.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+HmacMd5Free (\r
+ IN VOID *HmacMd5Ctx\r
+ )\r
+{\r
+ //\r
+ // Free OpenSSL HMAC_CTX Context\r
+ //\r
+ HMAC_CTX_free ((HMAC_CTX *)HmacMd5Ctx);\r
}\r
\r
/**\r
//\r
// OpenSSL HMAC-MD5 Context Initialization\r
//\r
- HMAC_CTX_init (HmacMd5Context);\r
- HMAC_Init_ex (HmacMd5Context, Key, (UINT32) KeySize, EVP_md5(), NULL);\r
+ memset(HmacMd5Context, 0, HMAC_MD5_CTX_SIZE);\r
+ if (HMAC_CTX_reset ((HMAC_CTX *)HmacMd5Context) != 1) {\r
+ return FALSE;\r
+ }\r
+ if (HMAC_Init_ex ((HMAC_CTX *)HmacMd5Context, Key, (UINT32) KeySize, EVP_md5(), NULL) != 1) {\r
+ return FALSE;\r
+ }\r
\r
return TRUE;\r
}\r
if (HmacMd5Context == NULL || NewHmacMd5Context == NULL) {\r
return FALSE;\r
}\r
- \r
- CopyMem (NewHmacMd5Context, HmacMd5Context, sizeof (HMAC_CTX));\r
+\r
+ if (HMAC_CTX_copy ((HMAC_CTX *)NewHmacMd5Context, (HMAC_CTX *)HmacMd5Context) != 1) {\r
+ return FALSE;\r
+ }\r
\r
return TRUE;\r
}\r
//\r
// OpenSSL HMAC-MD5 digest update\r
//\r
- HMAC_Update (HmacMd5Context, Data, DataSize);\r
+ if (HMAC_Update ((HMAC_CTX *)HmacMd5Context, Data, DataSize) != 1) {\r
+ return FALSE;\r
+ }\r
\r
return TRUE;\r
}\r
//\r
// OpenSSL HMAC-MD5 digest finalization\r
//\r
- HMAC_Final (HmacMd5Context, HmacValue, &Length);\r
- HMAC_CTX_cleanup (HmacMd5Context);\r
+ if (HMAC_Final ((HMAC_CTX *)HmacMd5Context, HmacValue, &Length) != 1) {\r
+ return FALSE;\r
+ }\r
+ if (HMAC_CTX_reset ((HMAC_CTX *)HmacMd5Context) != 1) {\r
+ return FALSE;\r
+ }\r
\r
return TRUE;\r
}\r
/** @file\r
HMAC-MD5 Wrapper Implementation which does not provide real capabilities.\r
\r
-Copyright (c) 2012, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2012 - 2017, 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
\r
/**\r
Retrieves the size, in bytes, of the context buffer required for HMAC-MD5 operations.\r
+ (NOTE: This API is deprecated.\r
+ Use HmacMd5New() / HmacMd5Free() for HMAC-MD5 Context operations.)\r
\r
Return zero to indicate this interface is not supported.\r
\r
return 0;\r
}\r
\r
+/**\r
+ Allocates and initializes one HMAC_CTX context for subsequent HMAC-MD5 use.\r
+\r
+ Return NULL to indicate this interface is not supported.\r
+\r
+ @retval NULL This interface is not supported.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+HmacMd5New (\r
+ VOID\r
+ )\r
+{\r
+ ASSERT (FALSE);\r
+ return NULL;\r
+}\r
+\r
+/**\r
+ Release the specified HMAC_CTX context.\r
+\r
+ This function will do nothing.\r
+\r
+ @param[in] HmacMd5Ctx Pointer to the HMAC_CTX context to be released.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+HmacMd5Free (\r
+ IN VOID *HmacMd5Ctx\r
+ )\r
+{\r
+ ASSERT (FALSE);\r
+ return;\r
+}\r
+\r
/**\r
Initializes user-supplied memory pointed by HmacMd5Context as HMAC-MD5 context for\r
subsequent use. \r
/** @file\r
HMAC-SHA1 Wrapper Implementation over OpenSSL.\r
\r
-Copyright (c) 2010 - 2012, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2010 - 2017, 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
#include "InternalCryptLib.h"\r
#include <openssl/hmac.h>\r
\r
+#define HMAC_SHA1_CTX_SIZE sizeof(void *) * 4 + sizeof(unsigned int) + \\r
+ sizeof(unsigned char) * HMAC_MAX_MD_CBLOCK\r
+\r
/**\r
Retrieves the size, in bytes, of the context buffer required for HMAC-SHA1 operations.\r
+ (NOTE: This API is deprecated.\r
+ Use HmacSha1New() / HmacSha1Free() for HMAC-SHA1 Context operations.)\r
\r
@return The size, in bytes, of the context buffer required for HMAC-SHA1 operations.\r
\r
{\r
//\r
// Retrieves the OpenSSL HMAC-SHA1 Context Size\r
+ // NOTE: HMAC_CTX object was made opaque in openssl-1.1.x, here we just use the\r
+ // fixed size as a workaround to make this API work for compatibility.\r
+ // We should retire HmacSha15GetContextSize() in future, and use HmacSha1New()\r
+ // and HmacSha1Free() for context allocation and release.\r
+ //\r
+ return (UINTN) HMAC_SHA1_CTX_SIZE;\r
+}\r
+\r
+/**\r
+ Allocates and initializes one HMAC_CTX context for subsequent HMAC-SHA1 use.\r
+\r
+ @return Pointer to the HMAC_CTX context that has been initialized.\r
+ If the allocations fails, HmacSha1New() returns NULL.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+HmacSha1New (\r
+ VOID\r
+ )\r
+{\r
+ //\r
+ // Allocates & Initializes HMAC_CTX Context by OpenSSL HMAC_CTX_new()\r
+ //\r
+ return (VOID *) HMAC_CTX_new ();\r
+}\r
+\r
+/**\r
+ Release the specified HMAC_CTX context.\r
+\r
+ @param[in] HmacSha1Ctx Pointer to the HMAC_CTX context to be released.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+HmacSha1Free (\r
+ IN VOID *HmacSha1Ctx\r
+ )\r
+{\r
//\r
- return (UINTN) (sizeof (HMAC_CTX));\r
+ // Free OpenSSL HMAC_CTX Context\r
+ //\r
+ HMAC_CTX_free ((HMAC_CTX *)HmacSha1Ctx);\r
}\r
\r
/**\r
//\r
// OpenSSL HMAC-SHA1 Context Initialization\r
//\r
- HMAC_CTX_init (HmacSha1Context);\r
- HMAC_Init_ex (HmacSha1Context, Key, (UINT32) KeySize, EVP_sha1(), NULL);\r
+ memset(HmacSha1Context, 0, HMAC_SHA1_CTX_SIZE);\r
+ if (HMAC_CTX_reset ((HMAC_CTX *)HmacSha1Context) != 1) {\r
+ return FALSE;\r
+ }\r
+ if (HMAC_Init_ex ((HMAC_CTX *)HmacSha1Context, Key, (UINT32) KeySize, EVP_sha1(), NULL) != 1) {\r
+ return FALSE;\r
+ }\r
\r
return TRUE;\r
}\r
return FALSE;\r
}\r
\r
- CopyMem (NewHmacSha1Context, HmacSha1Context, sizeof (HMAC_CTX));\r
+ if (HMAC_CTX_copy ((HMAC_CTX *)NewHmacSha1Context, (HMAC_CTX *)HmacSha1Context) != 1) {\r
+ return FALSE;\r
+ }\r
\r
return TRUE;\r
}\r
//\r
// OpenSSL HMAC-SHA1 digest update\r
//\r
- HMAC_Update (HmacSha1Context, Data, DataSize);\r
+ if (HMAC_Update ((HMAC_CTX *)HmacSha1Context, Data, DataSize) != 1) {\r
+ return FALSE;\r
+ }\r
\r
return TRUE;\r
}\r
//\r
// OpenSSL HMAC-SHA1 digest finalization\r
//\r
- HMAC_Final (HmacSha1Context, HmacValue, &Length);\r
- HMAC_CTX_cleanup (HmacSha1Context);\r
+ if (HMAC_Final ((HMAC_CTX *)HmacSha1Context, HmacValue, &Length) != 1) {\r
+ return FALSE;\r
+ }\r
+ if (HMAC_CTX_reset ((HMAC_CTX *)HmacSha1Context) != 1) {\r
+ return FALSE;\r
+ }\r
\r
return TRUE;\r
}\r
/** @file\r
HMAC-SHA1 Wrapper Implementation which does not provide real capabilities. \r
\r
-Copyright (c) 2012, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2012 - 2017, 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
\r
/**\r
Retrieves the size, in bytes, of the context buffer required for HMAC-SHA1 operations.\r
+ (NOTE: This API is deprecated.\r
+ Use HmacSha1New() / HmacSha1Free() for HMAC-SHA1 Context operations.)\r
\r
Return zero to indicate this interface is not supported.\r
\r
return 0;\r
}\r
\r
+/**\r
+ Allocates and initializes one HMAC_CTX context for subsequent HMAC-SHA1 use.\r
+\r
+ Return NULL to indicate this interface is not supported.\r
+\r
+ @return NULL This interface is not supported..\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+HmacSha1New (\r
+ VOID\r
+ )\r
+{\r
+ ASSERT (FALSE);\r
+ return NULL;\r
+}\r
+\r
+/**\r
+ Release the specified HMAC_CTX context.\r
+\r
+ This function will do nothing.\r
+\r
+ @param[in] HmacSha1Ctx Pointer to the HMAC_CTX context to be released.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+HmacSha1Free (\r
+ IN VOID *HmacSha1Ctx\r
+ )\r
+{\r
+ ASSERT (FALSE);\r
+ return;\r
+}\r
+\r
/**\r
Initializes user-supplied memory pointed by HmacSha1Context as HMAC-SHA1 context for\r
subsequent use.\r
/** @file\r
HMAC-SHA256 Wrapper Implementation over OpenSSL.\r
\r
-Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2016 - 2017, 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
#include "InternalCryptLib.h"\r
#include <openssl/hmac.h>\r
\r
+#define HMAC_SHA256_CTX_SIZE sizeof(void *) * 4 + sizeof(unsigned int) + \\r
+ sizeof(unsigned char) * HMAC_MAX_MD_CBLOCK\r
+\r
/**\r
Retrieves the size, in bytes, of the context buffer required for HMAC-SHA256 operations.\r
+ (NOTE: This API is deprecated.\r
+ Use HmacSha256New() / HmacSha256Free() for HMAC-SHA256 Context operations.)\r
\r
@return The size, in bytes, of the context buffer required for HMAC-SHA256 operations.\r
\r
{\r
//\r
// Retrieves the OpenSSL HMAC-SHA256 Context Size\r
+ // NOTE: HMAC_CTX object was made opaque in openssl-1.1.x, here we just use the\r
+ // fixed size as a workaround to make this API work for compatibility.\r
+ // We should retire HmacSha256GetContextSize() in future, and use HmacSha256New()\r
+ // and HmacSha256Free() for context allocation and release.\r
+ //\r
+ return (UINTN)HMAC_SHA256_CTX_SIZE;\r
+}\r
+\r
+/**\r
+ Allocates and initializes one HMAC_CTX context for subsequent HMAC-SHA256 use.\r
+\r
+ @return Pointer to the HMAC_CTX context that has been initialized.\r
+ If the allocations fails, HmacSha256New() returns NULL.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+HmacSha256New (\r
+ VOID\r
+ )\r
+{\r
+ //\r
+ // Allocates & Initializes HMAC_CTX Context by OpenSSL HMAC_CTX_new()\r
+ //\r
+ return (VOID *) HMAC_CTX_new ();\r
+}\r
+\r
+/**\r
+ Release the specified HMAC_CTX context.\r
+\r
+ @param[in] HmacSha256Ctx Pointer to the HMAC_CTX context to be released.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+HmacSha256Free (\r
+ IN VOID *HmacSha256Ctx\r
+ )\r
+{\r
//\r
- return (UINTN) (sizeof (HMAC_CTX));\r
+ // Free OpenSSL HMAC_CTX Context\r
+ //\r
+ HMAC_CTX_free ((HMAC_CTX *)HmacSha256Ctx);\r
}\r
\r
/**\r
//\r
// OpenSSL HMAC-SHA256 Context Initialization\r
//\r
- HMAC_CTX_init (HmacSha256Context);\r
- HMAC_Init_ex (HmacSha256Context, Key, (UINT32) KeySize, EVP_sha256(), NULL);\r
+ memset(HmacSha256Context, 0, HMAC_SHA256_CTX_SIZE);\r
+ if (HMAC_CTX_reset ((HMAC_CTX *)HmacSha256Context) != 1) {\r
+ return FALSE;\r
+ }\r
+ if (HMAC_Init_ex ((HMAC_CTX *)HmacSha256Context, Key, (UINT32) KeySize, EVP_sha256(), NULL) != 1) {\r
+ return FALSE;\r
+ }\r
\r
return TRUE;\r
}\r
return FALSE;\r
}\r
\r
- CopyMem (NewHmacSha256Context, HmacSha256Context, sizeof (HMAC_CTX));\r
+ if (HMAC_CTX_copy ((HMAC_CTX *)NewHmacSha256Context, (HMAC_CTX *)HmacSha256Context) != 1) {\r
+ return FALSE;\r
+ }\r
\r
return TRUE;\r
}\r
//\r
// OpenSSL HMAC-SHA256 digest update\r
//\r
- HMAC_Update (HmacSha256Context, Data, DataSize);\r
+ if (HMAC_Update ((HMAC_CTX *)HmacSha256Context, Data, DataSize) != 1) {\r
+ return FALSE;\r
+ }\r
\r
return TRUE;\r
}\r
//\r
// OpenSSL HMAC-SHA256 digest finalization\r
//\r
- HMAC_Final (HmacSha256Context, HmacValue, &Length);\r
- HMAC_CTX_cleanup (HmacSha256Context);\r
+ if (HMAC_Final ((HMAC_CTX *)HmacSha256Context, HmacValue, &Length) != 1) {\r
+ return FALSE;\r
+ }\r
+ if (HMAC_CTX_reset ((HMAC_CTX *)HmacSha256Context) != 1) {\r
+ return FALSE;\r
+ }\r
\r
return TRUE;\r
}\r
/** @file\r
HMAC-SHA256 Wrapper Implementation which does not provide real capabilities.\r
\r
-Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2016 - 2017, 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
\r
/**\r
Retrieves the size, in bytes, of the context buffer required for HMAC-SHA256 operations.\r
+ (NOTE: This API is deprecated.\r
+ Use HmacSha256New() / HmacSha256Free() for HMAC-SHA256 Context operations.)\r
\r
Return zero to indicate this interface is not supported.\r
\r
return 0;\r
}\r
\r
+/**\r
+ Allocates and initializes one HMAC_CTX context for subsequent HMAC-SHA256 use.\r
+\r
+ Return NULL to indicate this interface is not supported.\r
+\r
+ @return NULL This interface is not supported..\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+HmacSha256New (\r
+ VOID\r
+ )\r
+{\r
+ ASSERT (FALSE);\r
+ return NULL;\r
+}\r
+\r
+/**\r
+ Release the specified HMAC_CTX context.\r
+\r
+ This function will do nothing.\r
+\r
+ @param[in] HmacSha256Ctx Pointer to the HMAC_CTX context to be released.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+HmacSha256Free (\r
+ IN VOID *HmacSha256Ctx\r
+ )\r
+{\r
+ ASSERT (FALSE);\r
+ return;\r
+}\r
+\r
/**\r
Initializes user-supplied memory pointed by HmacSha256Context as HMAC-SHA256 context for\r
subsequent use.\r