1/* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements.  See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License.  You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16/* This is derived from material copyright RSA Data Security, Inc.
17 * Their notice is reproduced below in its entirety.
18 *
19 * Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
20 * rights reserved.
21 *
22 * License to copy and use this software is granted provided that it
23 * is identified as the "RSA Data Security, Inc. MD4 Message-Digest
24 * Algorithm" in all material mentioning or referencing this software
25 * or this function.
26 *
27 * License is also granted to make and use derivative works provided
28 * that such works are identified as "derived from the RSA Data
29 * Security, Inc. MD4 Message-Digest Algorithm" in all material
30 * mentioning or referencing the derived work.
31 *
32 * RSA Data Security, Inc. makes no representations concerning either
33 * the merchantability of this software or the suitability of this
34 * software for any particular purpose. It is provided "as is"
35 * without express or implied warranty of any kind.
36 *
37 * These notices must be retained in any copies of any part of this
38 * documentation and/or software.
39 */
40
41#ifndef APR_MD4_H
42#define APR_MD4_H
43
44#include "apu.h"
45#include "apr_xlate.h"
46/**
47 * @file apr_md4.h
48 * @brief APR-UTIL MD4 Library
49 */
50#ifdef __cplusplus
51extern "C" {
52#endif
53
54/**
55 * @defgroup APR_Util_MD4 MD4 Library
56 * @ingroup APR_Util
57 * @{
58 */
59
60/** The digestsize for MD4 */
61#define APR_MD4_DIGESTSIZE 16
62
63/** @see apr_md4_ctx_t */
64typedef struct apr_md4_ctx_t apr_md4_ctx_t;
65
66/** MD4 context. */
67struct apr_md4_ctx_t {
68    /** state (ABCD) */
69    apr_uint32_t state[4];
70    /** number of bits, modulo 2^64 (lsb first) */
71    apr_uint32_t count[2];
72    /** input buffer */
73    unsigned char buffer[64];
74#if APR_HAS_XLATE
75    /** translation handle */
76    apr_xlate_t *xlate;
77#endif
78};
79
80/**
81 * MD4 Initialize.  Begins an MD4 operation, writing a new context.
82 * @param context The MD4 context to initialize.
83 */
84APU_DECLARE(apr_status_t) apr_md4_init(apr_md4_ctx_t *context);
85
86#if APR_HAS_XLATE
87/**
88 * MDr4 translation setup.  Provides the APR translation handle to be used
89 * for translating the content before calculating the digest.
90 * @param context The MD4 content to set the translation for.
91 * @param xlate The translation handle to use for this MD4 context
92 */
93APU_DECLARE(apr_status_t) apr_md4_set_xlate(apr_md4_ctx_t *context,
94                                            apr_xlate_t *xlate);
95#else
96#define apr_md4_set_xlate(context, xlate) APR_ENOTIMPL
97#endif
98
99/**
100 * MD4 block update operation.  Continue an MD4 message-digest operation,
101 * processing another message block, and updating the context.
102 * @param context The MD4 content to update.
103 * @param input next message block to update
104 * @param inputLen The length of the next message block
105 */
106APU_DECLARE(apr_status_t) apr_md4_update(apr_md4_ctx_t *context,
107                                         const unsigned char *input,
108                                         apr_size_t inputLen);
109
110/**
111 * MD4 finalization.  Ends an MD4 message-digest operation, writing the
112 * message digest and zeroing the context
113 * @param digest The final MD4 digest
114 * @param context The MD4 content we are finalizing.
115 */
116APU_DECLARE(apr_status_t) apr_md4_final(
117                                    unsigned char digest[APR_MD4_DIGESTSIZE],
118                                    apr_md4_ctx_t *context);
119
120/**
121 * MD4 digest computation
122 * @param digest The MD4 digest
123 * @param input message block to use
124 * @param inputLen The length of the message block
125 */
126APU_DECLARE(apr_status_t) apr_md4(unsigned char digest[APR_MD4_DIGESTSIZE],
127                                  const unsigned char *input,
128                                  apr_size_t inputLen);
129
130/** @} */
131#ifdef __cplusplus
132}
133#endif
134
135#endif /* !APR_MD4_H */
136