diff options
| author | hhtian <hhtian@6f19259b-4bc3-4df7-8a09-765794883524> | 2010-11-01 06:30:58 +0000 |
|---|---|---|
| committer | hhtian <hhtian@6f19259b-4bc3-4df7-8a09-765794883524> | 2010-11-01 06:30:58 +0000 |
| commit | 97f98500c1d40eba76210961e90ea5d354bcbc18 (patch) | |
| tree | 88513b4a041208d992929db5703a4312a0497a3b /CryptoPkg/Library/BaseCryptLib/Hash/CryptMd5.c | |
| parent | a3bcde70e6dc69000f85cc5deee98101d2ae200a (diff) | |
| download | edk2-platforms-97f98500c1d40eba76210961e90ea5d354bcbc18.tar.xz | |
Add CryptoPkg (from UDK2010.UP3)
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10987 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'CryptoPkg/Library/BaseCryptLib/Hash/CryptMd5.c')
| -rw-r--r-- | CryptoPkg/Library/BaseCryptLib/Hash/CryptMd5.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/CryptoPkg/Library/BaseCryptLib/Hash/CryptMd5.c b/CryptoPkg/Library/BaseCryptLib/Hash/CryptMd5.c new file mode 100644 index 0000000000..99471a0176 --- /dev/null +++ b/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));
+}
|