Add CryptoPkg (from UDK2010.UP3)

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10987 6f19259b-4bc3-4df7-8a09-765794883524

CryptoPkg/Library/BaseCryptLib/Hash/CryptMd5.c

@@ -0,0 +1,145 @@
+/** @file
+  MD5 Digest Wrapper Implementation over OpenSSL.
+
+Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution.  The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+
+#include <Library/BaseCryptLib.h>
+#include <openssl/md5.h>
+
+
+/**
+  Retrieves the size, in bytes, of the context buffer required for MD5 hash operations.
+
+  @return  The size, in bytes, of the context buffer required for MD5 hash operations.
+
+**/
+UINTN
+EFIAPI
+Md5GetContextSize (
+  VOID
+  )
+{
+  //
+  // Retrieves the OpenSSL MD5 Context Size
+  //
+  return (UINTN)(sizeof (MD5_CTX));
+}
+
+
+/**
+  Initializes user-supplied memory pointed by Md5Context as MD5 hash context for
+  subsequent use.
+
+  If Md5Context is NULL, then ASSERT().
+
+  @param[in, out]  Md5Context  Pointer to MD5 Context being initialized.
+
+  @retval TRUE   MD5 context initialization succeeded.
+  @retval FALSE  MD5 context initialization failed.
+
+**/
+BOOLEAN
+EFIAPI
+Md5Init (
+  IN OUT  VOID  *Md5Context
+  )
+{
+  //
+  // ASSERT if Md5Context is NULL.
+  //
+  ASSERT (Md5Context != NULL);
+
+  //
+  // OpenSSL MD5 Context Initialization
+  //
+  return (BOOLEAN) (MD5_Init ((MD5_CTX *)Md5Context));
+}
+
+
+/**
+  Performs MD5 digest on a data buffer of the specified length. This function can
+  be called multiple times to compute the digest of long or discontinuous data streams.
+
+  If Md5Context is NULL, then ASSERT().
+
+  @param[in, out]  Md5Context  Pointer to the MD5 context.
+  @param[in]       Data        Pointer to the buffer containing the data to be hashed.
+  @param[in]       DataLength  Length of Data buffer in bytes.
+
+  @retval TRUE   MD5 data digest succeeded.
+  @retval FALSE  Invalid MD5 context. After Md5Final function has been called, the
+                 MD5 context cannot be reused.
+
+**/
+BOOLEAN
+EFIAPI
+Md5Update (
+  IN OUT  VOID        *Md5Context,
+  IN      CONST VOID  *Data,
+  IN      UINTN       DataLength
+  )
+{
+  //
+  // ASSERT if Md5Context is NULL
+  //
+  ASSERT (Md5Context != NULL);
+
+  //
+  // ASSERT if invalid parameters, in case that only DataLength was checked in OpenSSL
+  //
+  if (Data == NULL) {
+    ASSERT (DataLength == 0);
+  }
+
+  //
+  // OpenSSL MD5 Hash Update
+  //
+  return (BOOLEAN) (MD5_Update ((MD5_CTX *)Md5Context, Data, DataLength));
+}
+
+
+/**
+  Completes MD5 hash computation and retrieves the digest value into the specified
+  memory. After this function has been called, the MD5 context cannot be used again.
+
+  If Md5Context is NULL, then ASSERT().
+  If HashValue is NULL, then ASSERT().
+
+  @param[in, out]  Md5Context  Pointer to the MD5 context
+  @param[out]      HashValue   Pointer to a buffer that receives the MD5 digest
+                               value (16 bytes).
+
+  @retval TRUE   MD5 digest computation succeeded.
+  @retval FALSE  MD5 digest computation failed.
+
+**/
+BOOLEAN
+EFIAPI
+Md5Final (
+  IN OUT  VOID   *Md5Context,
+  OUT     UINT8  *HashValue
+  )
+{
+  //
+  // ASSERT if Md5Context is NULL or HashValue is NULL
+  //
+  ASSERT (Md5Context != NULL);
+  ASSERT (HashValue  != NULL);
+
+  //
+  // OpenSSL MD5 Hash Finalization
+  //
+  return (BOOLEAN) (MD5_Final (HashValue, (MD5_CTX *)Md5Context));
+}