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git.proxmox.com Git - mirror_edk2.git/blob - CryptoPkg/Library/BaseCryptLib/Hash/CryptMd5.c
2 MD5 Digest Wrapper Implementation over OpenSSL.
4 Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved.<BR>
5 This program and the accompanying materials
6 are licensed and made available under the terms and conditions of the BSD License
7 which accompanies this distribution. The full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
15 #include "InternalCryptLib.h"
16 #include <openssl/md5.h>
20 Retrieves the size, in bytes, of the context buffer required for MD5 hash operations.
22 @return The size, in bytes, of the context buffer required for MD5 hash operations.
32 // Retrieves the OpenSSL MD5 Context Size
34 return (UINTN
) (sizeof (MD5_CTX
));
39 Initializes user-supplied memory pointed by Md5Context as MD5 hash context for
42 If Md5Context is NULL, then return FALSE.
44 @param[out] Md5Context Pointer to MD5 context being initialized.
46 @retval TRUE MD5 context initialization succeeded.
47 @retval FALSE MD5 context initialization failed.
57 // Check input parameters.
59 if (Md5Context
== NULL
) {
64 // OpenSSL MD5 Context Initialization
66 return (BOOLEAN
) (MD5_Init ((MD5_CTX
*) Md5Context
));
70 Makes a copy of an existing MD5 context.
72 If Md5Context is NULL, then return FALSE.
73 If NewMd5Context is NULL, then return FALSE.
75 @param[in] Md5Context Pointer to MD5 context being copied.
76 @param[out] NewMd5Context Pointer to new MD5 context.
78 @retval TRUE MD5 context copy succeeded.
79 @retval FALSE MD5 context copy failed.
85 IN CONST VOID
*Md5Context
,
86 OUT VOID
*NewMd5Context
90 // Check input parameters.
92 if (Md5Context
== NULL
|| NewMd5Context
== NULL
) {
96 CopyMem (NewMd5Context
, Md5Context
, sizeof (MD5_CTX
));
102 Digests the input data and updates MD5 context.
104 This function performs MD5 digest on a data buffer of the specified size.
105 It can be called multiple times to compute the digest of long or discontinuous data streams.
106 MD5 context should be already correctly initialized by Md5Init(), and should not be finalized
107 by Md5Final(). Behavior with invalid context is undefined.
109 If Md5Context is NULL, then return FALSE.
111 @param[in, out] Md5Context Pointer to the MD5 context.
112 @param[in] Data Pointer to the buffer containing the data to be hashed.
113 @param[in] DataSize Size of Data buffer in bytes.
115 @retval TRUE MD5 data digest succeeded.
116 @retval FALSE MD5 data digest failed.
122 IN OUT VOID
*Md5Context
,
128 // Check input parameters.
130 if (Md5Context
== NULL
) {
135 // Check invalid parameters, in case that only DataLength was checked in OpenSSL
137 if (Data
== NULL
&& (DataSize
!= 0)) {
142 // OpenSSL MD5 Hash Update
144 return (BOOLEAN
) (MD5_Update ((MD5_CTX
*) Md5Context
, Data
, DataSize
));
148 Completes computation of the MD5 digest value.
150 This function completes MD5 hash computation and retrieves the digest value into
151 the specified memory. After this function has been called, the MD5 context cannot
153 MD5 context should be already correctly initialized by Md5Init(), and should not be
154 finalized by Md5Final(). Behavior with invalid MD5 context is undefined.
156 If Md5Context is NULL, then return FALSE.
157 If HashValue is NULL, then return FALSE.
159 @param[in, out] Md5Context Pointer to the MD5 context.
160 @param[out] HashValue Pointer to a buffer that receives the MD5 digest
163 @retval TRUE MD5 digest computation succeeded.
164 @retval FALSE MD5 digest computation failed.
170 IN OUT VOID
*Md5Context
,
175 // Check input parameters.
177 if (Md5Context
== NULL
|| HashValue
== NULL
) {
182 // OpenSSL MD5 Hash Finalization
184 return (BOOLEAN
) (MD5_Final (HashValue
, (MD5_CTX
*) Md5Context
));
188 Computes the MD5 message digest of a input data buffer.
190 This function performs the MD5 message digest of a given data buffer, and places
191 the digest value into the specified memory.
193 If this interface is not supported, then return FALSE.
195 @param[in] Data Pointer to the buffer containing the data to be hashed.
196 @param[in] DataSize Size of Data buffer in bytes.
197 @param[out] HashValue Pointer to a buffer that receives the MD5 digest
200 @retval TRUE MD5 digest computation succeeded.
201 @retval FALSE MD5 digest computation failed.
202 @retval FALSE This interface is not supported.
214 // Check input parameters.
216 if (HashValue
== NULL
) {
219 if (Data
== NULL
&& (DataSize
!= 0)) {
224 // OpenSSL MD5 Hash Computation.
226 if (MD5 (Data
, DataSize
, HashValue
) == NULL
) {