[PATCH] CryptoPkg/BaseCryptLib: deprecate HmacXxxGetContextSize interface

["Wang, Jian J" <jian.j.wang@intel.com>]

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1792

Hmac(Md5|Sha1|Sha256)GetContextSize() use a deprecated macro
HMAC_MAX_MD_CBLOCK defined in openssl. They should be dropped to
avoid misuses in the future. For context allocation and release,
use HmacXxxNew() and HmacXxxFree() instead.

Since HmacXxxNew will zero allocated context buffer, the calling
to memset() in HmacXxxInit is safe to be removed.

Cc: Xiaoyu Lu <xiaoyux.lu@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
---
 CryptoPkg/Include/Library/BaseCryptLib.h      | 51 -------------------
 .../Library/BaseCryptLib/Hmac/CryptHmacMd5.c  | 32 ------------
 .../BaseCryptLib/Hmac/CryptHmacMd5Null.c      | 20 --------
 .../Library/BaseCryptLib/Hmac/CryptHmacSha1.c | 33 ------------
 .../BaseCryptLib/Hmac/CryptHmacSha1Null.c     | 20 --------
 .../BaseCryptLib/Hmac/CryptHmacSha256.c       | 32 ------------
 .../BaseCryptLib/Hmac/CryptHmacSha256Null.c   | 20 --------
 .../BaseCryptLibNull/Hmac/CryptHmacMd5Null.c  | 20 --------
 .../BaseCryptLibNull/Hmac/CryptHmacSha1Null.c | 20 --------
 .../Hmac/CryptHmacSha256Null.c                | 20 --------
 10 files changed, 268 deletions(-)

diff --git a/CryptoPkg/Include/Library/BaseCryptLib.h b/CryptoPkg/Include/Library/BaseCryptLib.h
index 8fe303a0b3..ffe606fa3f 100644
--- a/CryptoPkg/Include/Library/BaseCryptLib.h
+++ b/CryptoPkg/Include/Library/BaseCryptLib.h
@@ -1025,23 +1025,6 @@ Sm3HashAll (
 //    MAC (Message Authentication Code) Primitive
 //=====================================================================================
 
-/**
-  Retrieves the size, in bytes, of the context buffer required for HMAC-MD5 operations.
-  (NOTE: This API is deprecated.
-         Use HmacMd5New() / HmacMd5Free() for HMAC-MD5 Context operations.)
-
-  If this interface is not supported, then return zero.
-
-  @return  The size, in bytes, of the context buffer required for HMAC-MD5 operations.
-  @retval  0   This interface is not supported.
-
-**/
-UINTN
-EFIAPI
-HmacMd5GetContextSize (
-  VOID
-  );
-
 /**
   Allocates and initializes one HMAC_CTX context for subsequent HMAC-MD5 use.
 
@@ -1175,23 +1158,6 @@ HmacMd5Final (
   OUT     UINT8  *HmacValue
   );
 
-/**
-  Retrieves the size, in bytes, of the context buffer required for HMAC-SHA1 operations.
-  (NOTE: This API is deprecated.
-         Use HmacSha1New() / HmacSha1Free() for HMAC-SHA1 Context operations.)
-
-  If this interface is not supported, then return zero.
-
-  @return  The size, in bytes, of the context buffer required for HMAC-SHA1 operations.
-  @retval  0   This interface is not supported.
-
-**/
-UINTN
-EFIAPI
-HmacSha1GetContextSize (
-  VOID
-  );
-
 /**
   Allocates and initializes one HMAC_CTX context for subsequent HMAC-SHA1 use.
 
@@ -1325,23 +1291,6 @@ HmacSha1Final (
   OUT     UINT8  *HmacValue
   );
 
-/**
-  Retrieves the size, in bytes, of the context buffer required for HMAC-SHA256 operations.
-  (NOTE: This API is deprecated.
-         Use HmacSha256New() / HmacSha256Free() for HMAC-SHA256 Context operations.)
-
-  If this interface is not supported, then return zero.
-
-  @return  The size, in bytes, of the context buffer required for HMAC-SHA256 operations.
-  @retval  0   This interface is not supported.
-
-**/
-UINTN
-EFIAPI
-HmacSha256GetContextSize (
-  VOID
-  );
-
 /**
   Allocates and initializes one HMAC_CTX context for subsequent HMAC-SHA256 use.
 
diff --git a/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacMd5.c b/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacMd5.c
index 19e9fbeae6..819842392b 100644
--- a/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacMd5.c
+++ b/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacMd5.c
@@ -9,37 +9,6 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 #include "InternalCryptLib.h"
 #include <openssl/hmac.h>
 
-//
-// NOTE: OpenSSL redefines the size of HMAC_CTX at crypto/hmac/hmac_lcl.h
-//       #define HMAC_MAX_MD_CBLOCK_SIZE     144
-//
-#define HMAC_MD5_CTX_SIZE    (sizeof(void *) * 4 + sizeof(unsigned int) + \
-                             sizeof(unsigned char) * 144)
-
-/**
-  Retrieves the size, in bytes, of the context buffer required for HMAC-MD5 operations.
-  (NOTE: This API is deprecated.
-         Use HmacMd5New() / HmacMd5Free() for HMAC-MD5 Context operations.)
-
-  @return  The size, in bytes, of the context buffer required for HMAC-MD5 operations.
-
-**/
-UINTN
-EFIAPI
-HmacMd5GetContextSize (
-  VOID
-  )
-{
-  //
-  // Retrieves the OpenSSL HMAC-MD5 Context Size
-  // NOTE: HMAC_CTX object was made opaque in openssl-1.1.x, here we just use the
-  //       fixed size as a workaround to make this API work for compatibility.
-  //       We should retire HmacMd5GetContextSize() in future, and use HmacMd5New()
-  //       and HmacMd5Free() for context allocation and release.
-  //
-  return (UINTN) HMAC_MD5_CTX_SIZE;
-}
-
 /**
   Allocates and initializes one HMAC_CTX context for subsequent HMAC-MD5 use.
 
@@ -109,7 +78,6 @@ HmacMd5Init (
   //
   // OpenSSL HMAC-MD5 Context Initialization
   //
-  memset(HmacMd5Context, 0, HMAC_MD5_CTX_SIZE);
   if (HMAC_CTX_reset ((HMAC_CTX *)HmacMd5Context) != 1) {
     return FALSE;
   }
diff --git a/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacMd5Null.c b/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacMd5Null.c
index 3aafed874b..205dc9e474 100644
--- a/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacMd5Null.c
+++ b/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacMd5Null.c
@@ -8,26 +8,6 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 
 #include "InternalCryptLib.h"
 
-/**
-  Retrieves the size, in bytes, of the context buffer required for HMAC-MD5 operations.
-  (NOTE: This API is deprecated.
-         Use HmacMd5New() / HmacMd5Free() for HMAC-MD5 Context operations.)
-
-  Return zero to indicate this interface is not supported.
-
-  @retval  0   This interface is not supported.
-
-**/
-UINTN
-EFIAPI
-HmacMd5GetContextSize (
-  VOID
-  )
-{
-  ASSERT (FALSE);
-  return 0;
-}
-
 /**
   Allocates and initializes one HMAC_CTX context for subsequent HMAC-MD5 use.
 
diff --git a/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacSha1.c b/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacSha1.c
index 7d7df9640e..f45ecebc6d 100644
--- a/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacSha1.c
+++ b/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacSha1.c
@@ -9,38 +9,6 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 #include "InternalCryptLib.h"
 #include <openssl/hmac.h>
 
-//
-// NOTE: OpenSSL redefines the size of HMAC_CTX at crypto/hmac/hmac_lcl.h
-//       #define HMAC_MAX_MD_CBLOCK_SIZE     144
-//
-//
-#define  HMAC_SHA1_CTX_SIZE   (sizeof(void *) * 4 + sizeof(unsigned int) + \
-                             sizeof(unsigned char) * 144)
-
-/**
-  Retrieves the size, in bytes, of the context buffer required for HMAC-SHA1 operations.
-  (NOTE: This API is deprecated.
-         Use HmacSha1New() / HmacSha1Free() for HMAC-SHA1 Context operations.)
-
-  @return  The size, in bytes, of the context buffer required for HMAC-SHA1 operations.
-
-**/
-UINTN
-EFIAPI
-HmacSha1GetContextSize (
-  VOID
-  )
-{
-  //
-  // Retrieves the OpenSSL HMAC-SHA1 Context Size
-  // NOTE: HMAC_CTX object was made opaque in openssl-1.1.x, here we just use the
-  //       fixed size as a workaround to make this API work for compatibility.
-  //       We should retire HmacSha15GetContextSize() in future, and use HmacSha1New()
-  //       and HmacSha1Free() for context allocation and release.
-  //
-  return (UINTN) HMAC_SHA1_CTX_SIZE;
-}
-
 /**
   Allocates and initializes one HMAC_CTX context for subsequent HMAC-SHA1 use.
 
@@ -110,7 +78,6 @@ HmacSha1Init (
   //
   // OpenSSL HMAC-SHA1 Context Initialization
   //
-  memset(HmacSha1Context, 0, HMAC_SHA1_CTX_SIZE);
   if (HMAC_CTX_reset ((HMAC_CTX *)HmacSha1Context) != 1) {
     return FALSE;
   }
diff --git a/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacSha1Null.c b/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacSha1Null.c
index 547aa484ea..542350f15a 100644
--- a/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacSha1Null.c
+++ b/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacSha1Null.c
@@ -8,26 +8,6 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 
 #include "InternalCryptLib.h"
 
-/**
-  Retrieves the size, in bytes, of the context buffer required for HMAC-SHA1 operations.
-  (NOTE: This API is deprecated.
-         Use HmacSha1New() / HmacSha1Free() for HMAC-SHA1 Context operations.)
-
-  Return zero to indicate this interface is not supported.
-
-  @retval  0   This interface is not supported.
-
-**/
-UINTN
-EFIAPI
-HmacSha1GetContextSize (
-  VOID
-  )
-{
-  ASSERT (FALSE);
-  return 0;
-}
-
 /**
   Allocates and initializes one HMAC_CTX context for subsequent HMAC-SHA1 use.
 
diff --git a/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacSha256.c b/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacSha256.c
index f24443e745..446d629d74 100644
--- a/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacSha256.c
+++ b/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacSha256.c
@@ -9,37 +9,6 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 #include "InternalCryptLib.h"
 #include <openssl/hmac.h>
 
-//
-// NOTE: OpenSSL redefines the size of HMAC_CTX at crypto/hmac/hmac_lcl.h
-//       #define HMAC_MAX_MD_CBLOCK_SIZE     144
-//
-#define HMAC_SHA256_CTX_SIZE    (sizeof(void *) * 4 + sizeof(unsigned int) + \
-                             sizeof(unsigned char) * 144)
-
-/**
-  Retrieves the size, in bytes, of the context buffer required for HMAC-SHA256 operations.
-  (NOTE: This API is deprecated.
-         Use HmacSha256New() / HmacSha256Free() for HMAC-SHA256 Context operations.)
-
-  @return  The size, in bytes, of the context buffer required for HMAC-SHA256 operations.
-
-**/
-UINTN
-EFIAPI
-HmacSha256GetContextSize (
-  VOID
-  )
-{
-  //
-  // Retrieves the OpenSSL HMAC-SHA256 Context Size
-  // NOTE: HMAC_CTX object was made opaque in openssl-1.1.x, here we just use the
-  //       fixed size as a workaround to make this API work for compatibility.
-  //       We should retire HmacSha256GetContextSize() in future, and use HmacSha256New()
-  //       and HmacSha256Free() for context allocation and release.
-  //
-  return (UINTN)HMAC_SHA256_CTX_SIZE;
-}
-
 /**
   Allocates and initializes one HMAC_CTX context for subsequent HMAC-SHA256 use.
 
@@ -109,7 +78,6 @@ HmacSha256Init (
   //
   // OpenSSL HMAC-SHA256 Context Initialization
   //
-  memset(HmacSha256Context, 0, HMAC_SHA256_CTX_SIZE);
   if (HMAC_CTX_reset ((HMAC_CTX *)HmacSha256Context) != 1) {
     return FALSE;
   }
diff --git a/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacSha256Null.c b/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacSha256Null.c
index f0a4420e27..f8074cc617 100644
--- a/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacSha256Null.c
+++ b/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacSha256Null.c
@@ -8,26 +8,6 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 
 #include "InternalCryptLib.h"
 
-/**
-  Retrieves the size, in bytes, of the context buffer required for HMAC-SHA256 operations.
-  (NOTE: This API is deprecated.
-         Use HmacSha256New() / HmacSha256Free() for HMAC-SHA256 Context operations.)
-
-  Return zero to indicate this interface is not supported.
-
-  @retval  0   This interface is not supported.
-
-**/
-UINTN
-EFIAPI
-HmacSha256GetContextSize (
-  VOID
-  )
-{
-  ASSERT (FALSE);
-  return 0;
-}
-
 /**
   Allocates and initializes one HMAC_CTX context for subsequent HMAC-SHA256 use.
 
diff --git a/CryptoPkg/Library/BaseCryptLibNull/Hmac/CryptHmacMd5Null.c b/CryptoPkg/Library/BaseCryptLibNull/Hmac/CryptHmacMd5Null.c
index 3aafed874b..205dc9e474 100644
--- a/CryptoPkg/Library/BaseCryptLibNull/Hmac/CryptHmacMd5Null.c
+++ b/CryptoPkg/Library/BaseCryptLibNull/Hmac/CryptHmacMd5Null.c
@@ -8,26 +8,6 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 
 #include "InternalCryptLib.h"
 
-/**
-  Retrieves the size, in bytes, of the context buffer required for HMAC-MD5 operations.
-  (NOTE: This API is deprecated.
-         Use HmacMd5New() / HmacMd5Free() for HMAC-MD5 Context operations.)
-
-  Return zero to indicate this interface is not supported.
-
-  @retval  0   This interface is not supported.
-
-**/
-UINTN
-EFIAPI
-HmacMd5GetContextSize (
-  VOID
-  )
-{
-  ASSERT (FALSE);
-  return 0;
-}
-
 /**
   Allocates and initializes one HMAC_CTX context for subsequent HMAC-MD5 use.
 
diff --git a/CryptoPkg/Library/BaseCryptLibNull/Hmac/CryptHmacSha1Null.c b/CryptoPkg/Library/BaseCryptLibNull/Hmac/CryptHmacSha1Null.c
index 547aa484ea..542350f15a 100644
--- a/CryptoPkg/Library/BaseCryptLibNull/Hmac/CryptHmacSha1Null.c
+++ b/CryptoPkg/Library/BaseCryptLibNull/Hmac/CryptHmacSha1Null.c
@@ -8,26 +8,6 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 
 #include "InternalCryptLib.h"
 
-/**
-  Retrieves the size, in bytes, of the context buffer required for HMAC-SHA1 operations.
-  (NOTE: This API is deprecated.
-         Use HmacSha1New() / HmacSha1Free() for HMAC-SHA1 Context operations.)
-
-  Return zero to indicate this interface is not supported.
-
-  @retval  0   This interface is not supported.
-
-**/
-UINTN
-EFIAPI
-HmacSha1GetContextSize (
-  VOID
-  )
-{
-  ASSERT (FALSE);
-  return 0;
-}
-
 /**
   Allocates and initializes one HMAC_CTX context for subsequent HMAC-SHA1 use.
 
diff --git a/CryptoPkg/Library/BaseCryptLibNull/Hmac/CryptHmacSha256Null.c b/CryptoPkg/Library/BaseCryptLibNull/Hmac/CryptHmacSha256Null.c
index f0a4420e27..f8074cc617 100644
--- a/CryptoPkg/Library/BaseCryptLibNull/Hmac/CryptHmacSha256Null.c
+++ b/CryptoPkg/Library/BaseCryptLibNull/Hmac/CryptHmacSha256Null.c
@@ -8,26 +8,6 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 
 #include "InternalCryptLib.h"
 
-/**
-  Retrieves the size, in bytes, of the context buffer required for HMAC-SHA256 operations.
-  (NOTE: This API is deprecated.
-         Use HmacSha256New() / HmacSha256Free() for HMAC-SHA256 Context operations.)
-
-  Return zero to indicate this interface is not supported.
-
-  @retval  0   This interface is not supported.
-
-**/
-UINTN
-EFIAPI
-HmacSha256GetContextSize (
-  VOID
-  )
-{
-  ASSERT (FALSE);
-  return 0;
-}
-
 /**
   Allocates and initializes one HMAC_CTX context for subsequent HMAC-SHA256 use.
 
-- 
2.24.0.windows.2