1 /** @file
2 MD4 Digest Wrapper Implementation over OpenSSL.
3
4 Copyright (c) 2010 - 2012, 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
9
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.
12
13 **/
14
15 #include "InternalCryptLib.h"
16 #include <openssl/md4.h>
17
18 /**
19 Retrieves the size, in bytes, of the context buffer required for MD4 hash operations.
20
21 @return The size, in bytes, of the context buffer required for MD4 hash operations.
22
23 **/
24 UINTN
25 EFIAPI
Md4GetContextSize(VOID)26 Md4GetContextSize (
27 VOID
28 )
29 {
30 //
31 // Retrieves the OpenSSL MD4 Context Size
32 //
33 return (UINTN) (sizeof (MD4_CTX));
34 }
35
36 /**
37 Initializes user-supplied memory pointed by Md4Context as MD4 hash context for
38 subsequent use.
39
40 If Md4Context is NULL, then return FALSE.
41
42 @param[out] Md4Context Pointer to MD4 context being initialized.
43
44 @retval TRUE MD4 context initialization succeeded.
45 @retval FALSE MD4 context initialization failed.
46
47 **/
48 BOOLEAN
49 EFIAPI
Md4Init(OUT VOID * Md4Context)50 Md4Init (
51 OUT VOID *Md4Context
52 )
53 {
54 //
55 // Check input parameters.
56 //
57 if (Md4Context == NULL) {
58 return FALSE;
59 }
60
61 //
62 // OpenSSL MD4 Context Initialization
63 //
64 return (BOOLEAN) (MD4_Init ((MD4_CTX *) Md4Context));
65 }
66
67 /**
68 Makes a copy of an existing MD4 context.
69
70 If Md4Context is NULL, then return FALSE.
71 If NewMd4Context is NULL, then return FALSE.
72
73 @param[in] Md4Context Pointer to MD4 context being copied.
74 @param[out] NewMd4Context Pointer to new MD4 context.
75
76 @retval TRUE MD4 context copy succeeded.
77 @retval FALSE MD4 context copy failed.
78
79 **/
80 BOOLEAN
81 EFIAPI
Md4Duplicate(IN CONST VOID * Md4Context,OUT VOID * NewMd4Context)82 Md4Duplicate (
83 IN CONST VOID *Md4Context,
84 OUT VOID *NewMd4Context
85 )
86 {
87 //
88 // Check input parameters.
89 //
90 if (Md4Context == NULL || NewMd4Context == NULL) {
91 return FALSE;
92 }
93
94 CopyMem (NewMd4Context, Md4Context, sizeof (MD4_CTX));
95
96 return TRUE;
97 }
98
99 /**
100 Digests the input data and updates MD4 context.
101
102 This function performs MD4 digest on a data buffer of the specified size.
103 It can be called multiple times to compute the digest of long or discontinuous data streams.
104 MD4 context should be already correctly intialized by Md4Init(), and should not be finalized
105 by Md4Final(). Behavior with invalid context is undefined.
106
107 If Md4Context is NULL, then return FALSE.
108
109 @param[in, out] Md4Context Pointer to the MD4 context.
110 @param[in] Data Pointer to the buffer containing the data to be hashed.
111 @param[in] DataSize Size of Data buffer in bytes.
112
113 @retval TRUE MD4 data digest succeeded.
114 @retval FALSE MD4 data digest failed.
115
116 **/
117 BOOLEAN
118 EFIAPI
Md4Update(IN OUT VOID * Md4Context,IN CONST VOID * Data,IN UINTN DataSize)119 Md4Update (
120 IN OUT VOID *Md4Context,
121 IN CONST VOID *Data,
122 IN UINTN DataSize
123 )
124 {
125 //
126 // Check input parameters.
127 //
128 if (Md4Context == NULL) {
129 return FALSE;
130 }
131
132 //
133 // Check invalid parameters, in case that only DataLength was checked in OpenSSL
134 //
135 if (Data == NULL && DataSize != 0) {
136 return FALSE;
137 }
138
139 //
140 // OpenSSL MD4 Hash Update
141 //
142 return (BOOLEAN) (MD4_Update ((MD4_CTX *) Md4Context, Data, DataSize));
143 }
144
145 /**
146 Completes computation of the MD4 digest value.
147
148 This function completes MD4 hash computation and retrieves the digest value into
149 the specified memory. After this function has been called, the MD4 context cannot
150 be used again.
151 MD4 context should be already correctly intialized by Md4Init(), and should not be
152 finalized by Md4Final(). Behavior with invalid MD4 context is undefined.
153
154 If Md4Context is NULL, then return FALSE.
155 If HashValue is NULL, then return FALSE.
156
157 @param[in, out] Md4Context Pointer to the MD4 context.
158 @param[out] HashValue Pointer to a buffer that receives the MD4 digest
159 value (16 bytes).
160
161 @retval TRUE MD4 digest computation succeeded.
162 @retval FALSE MD4 digest computation failed.
163
164 **/
165 BOOLEAN
166 EFIAPI
Md4Final(IN OUT VOID * Md4Context,OUT UINT8 * HashValue)167 Md4Final (
168 IN OUT VOID *Md4Context,
169 OUT UINT8 *HashValue
170 )
171 {
172 //
173 // Check input parameters.
174 //
175 if (Md4Context == NULL || HashValue == NULL) {
176 return FALSE;
177 }
178
179 //
180 // OpenSSL MD4 Hash Finalization
181 //
182 return (BOOLEAN) (MD4_Final (HashValue, (MD4_CTX *) Md4Context));
183 }
184