ReactOS  0.4.13-dev-1174-gdff75d7
hmac_md5.c
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1 /*
2  * Copyright 2006 Kai Blin
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * This library is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with this library; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
17  *
18  * This file implements RFC 2104 (HMAC) for the MD5 provider.
19  * It is needed for NTLM2 signing and sealing.
20  */
21 
22 #include "hmac_md5.h"
23 
24 void HMACMD5Init(HMAC_MD5_CTX *ctx, const unsigned char *key, unsigned int key_len)
25 {
26  int i;
27  unsigned char inner_padding[64];
28  unsigned char temp_key[16];
29 
30  if(key_len > 64)
31  {
32  MD5_CTX temp_ctx;
33 
34  MD5Init(&temp_ctx);
35  MD5Update(&temp_ctx, key, key_len);
36  MD5Final(&temp_ctx);
37  memcpy(temp_key, temp_ctx.digest, 16);
38 
39  key = temp_key;
40  key_len = 16;
41  }
42 
43  memset(inner_padding, 0, 64);
44  memset(ctx->outer_padding, 0, 64);
45  memcpy(inner_padding, key, key_len);
46  memcpy(ctx->outer_padding, key, key_len);
47 
48  for(i = 0; i < 64; ++i)
49  {
50  inner_padding[i] ^= 0x36;
51  ctx->outer_padding[i] ^= 0x5c;
52  }
53 
54  MD5Init(&(ctx->ctx));
55  MD5Update(&(ctx->ctx), inner_padding, 64);
56 }
57 
58 void HMACMD5Update(HMAC_MD5_CTX *ctx, const unsigned char *data, unsigned int data_len)
59 {
60  MD5Update(&(ctx->ctx), data, data_len);
61 }
62 
63 void HMACMD5Final(HMAC_MD5_CTX *ctx, unsigned char *digest)
64 {
65  MD5_CTX outer_ctx;
66  unsigned char inner_digest[16];
67 
68  MD5Final(&(ctx->ctx));
69  memcpy(inner_digest, ctx->ctx.digest, 16);
70 
71  MD5Init(&outer_ctx);
72  MD5Update(&outer_ctx, ctx->outer_padding, 64);
73  MD5Update(&outer_ctx, inner_digest, 16);
74  MD5Final(&outer_ctx);
75 
76  memcpy(digest, outer_ctx.digest, 16);
77 }
VOID WINAPI MD5Init(MD5_CTX *)
Definition: md5.c:45
void HMACMD5Init(HMAC_MD5_CTX *ctx, const unsigned char *key, unsigned int key_len)
Definition: hmac_md5.c:24
VOID WINAPI MD5Final(MD5_CTX *)
Definition: md5.c:113
VOID WINAPI MD5Update(MD5_CTX *, const unsigned char *, unsigned int)
Definition: md5.c:59
MD5_CTX ctx
Definition: hmac_md5.h:37
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
unsigned char outer_padding[64]
Definition: hmac_md5.h:38
unsigned char digest[16]
Definition: msi.c:4083
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: gl.h:1950
void HMACMD5Final(HMAC_MD5_CTX *ctx, unsigned char *digest)
Definition: hmac_md5.c:63
#define memcpy(s1, s2, n)
Definition: mkisofs.h:878
void HMACMD5Update(HMAC_MD5_CTX *ctx, const unsigned char *data, unsigned int data_len)
Definition: hmac_md5.c:58
Definition: msi.c:4078
#define memset(x, y, z)
Definition: compat.h:39
Definition: path.c:42