SDL_test_md5.c
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/*
***********************************************************************
** RSA Data Security, Inc. MD5 Message-Digest Algorithm **
** Created: 2/17/90 RLR **
** Revised: 1/91 SRD,AJ,BSK,JT Reference C ver., 7/10 constant corr. **
***********************************************************************
*/
/*
***********************************************************************
** Copyright (C) 1990, RSA Data Security, Inc. All rights reserved. **
** **
** License to copy and use this software is granted provided that **
** it is identified as the "RSA Data Security, Inc. MD5 Message- **
** Digest Algorithm" in all material mentioning or referencing this **
** software or this function. **
** **
** License is also granted to make and use derivative works **
** provided that such works are identified as "derived from the RSA **
** Data Security, Inc. MD5 Message-Digest Algorithm" in all **
** material mentioning or referencing the derived work. **
** **
** RSA Data Security, Inc. makes no representations concerning **
** either the merchantability of this software or the suitability **
** of this software for any particular purpose. It is provided "as **
** is" without express or implied warranty of any kind. **
** **
** These notices must be retained in any copies of any part of this **
** documentation and/or software. **
***********************************************************************
*/
#include "SDL_config.h"
#include "SDL_test.h"
/* Forward declaration of static helper function */
static void SDLTest_Md5Transform(MD5UINT4 * buf, MD5UINT4 * in);
static unsigned char MD5PADDING[64] = {
0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
/* F, G, H and I are basic MD5 functions */
#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
#define H(x, y, z) ((x) ^ (y) ^ (z))
#define I(x, y, z) ((y) ^ ((x) | (~z)))
/* ROTATE_LEFT rotates x left n bits */
#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4 */
/* Rotation is separate from addition to prevent recomputation */
#define FF(a, b, c, d, x, s, ac) \
{(a) += F ((b), (c), (d)) + (x) + (MD5UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
#define GG(a, b, c, d, x, s, ac) \
{(a) += G ((b), (c), (d)) + (x) + (MD5UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
#define HH(a, b, c, d, x, s, ac) \
{(a) += H ((b), (c), (d)) + (x) + (MD5UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
#define II(a, b, c, d, x, s, ac) \
{(a) += I ((b), (c), (d)) + (x) + (MD5UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
/*
The routine MD5Init initializes the message-digest context
mdContext. All fields are set to zero.
*/
void SDLTest_Md5Init(SDLTest_Md5Context * mdContext)
{
if (mdContext==NULL) return;
mdContext->i[0] = mdContext->i[1] = (MD5UINT4) 0;
/*
* Load magic initialization constants.
*/
mdContext->buf[0] = (MD5UINT4) 0x67452301;
mdContext->buf[1] = (MD5UINT4) 0xefcdab89;
mdContext->buf[2] = (MD5UINT4) 0x98badcfe;
mdContext->buf[3] = (MD5UINT4) 0x10325476;
}
/*
The routine MD5Update updates the message-digest context to
account for the presence of each of the characters inBuf[0..inLen-1]
in the message whose digest is being computed.
*/
void SDLTest_Md5Update(SDLTest_Md5Context * mdContext, unsigned char *inBuf,
unsigned int inLen)
{
MD5UINT4 in[16];
int mdi;
unsigned int i, ii;
if (mdContext == NULL) return;
if (inBuf == NULL || inLen < 1) return;
/*
* compute number of bytes mod 64
*/
mdi = (int) ((mdContext->i[0] >> 3) & 0x3F);
/*
* update number of bits
*/
if ((mdContext->i[0] + ((MD5UINT4) inLen << 3)) < mdContext->i[0])
mdContext->i[1]++;
mdContext->i[0] += ((MD5UINT4) inLen << 3);
mdContext->i[1] += ((MD5UINT4) inLen >> 29);
while (inLen--) {
/*
* add new character to buffer, increment mdi
*/
mdContext->in[mdi++] = *inBuf++;
/*
* transform if necessary
*/
if (mdi == 0x40) {
for (i = 0, ii = 0; i < 16; i++, ii += 4)
in[i] = (((MD5UINT4) mdContext->in[ii + 3]) << 24) |
(((MD5UINT4) mdContext->in[ii + 2]) << 16) |
(((MD5UINT4) mdContext->in[ii + 1]) << 8) |
((MD5UINT4) mdContext->in[ii]);
SDLTest_Md5Transform(mdContext->buf, in);
mdi = 0;
}
}
}
/*
The routine MD5Final terminates the message-digest computation and
ends with the desired message digest in mdContext->digest[0...15].
*/
void SDLTest_Md5Final(SDLTest_Md5Context * mdContext)
{
MD5UINT4 in[16];
int mdi;
unsigned int i, ii;
unsigned int padLen;
if (mdContext == NULL) return;
/*
* save number of bits
*/
in[14] = mdContext->i[0];
in[15] = mdContext->i[1];
/*
* compute number of bytes mod 64
*/
mdi = (int) ((mdContext->i[0] >> 3) & 0x3F);
/*
* pad out to 56 mod 64
*/
padLen = (mdi < 56) ? (56 - mdi) : (120 - mdi);
SDLTest_Md5Update(mdContext, MD5PADDING, padLen);
/*
* append length in bits and transform
*/
for (i = 0, ii = 0; i < 14; i++, ii += 4)
in[i] = (((MD5UINT4) mdContext->in[ii + 3]) << 24) |
(((MD5UINT4) mdContext->in[ii + 2]) << 16) |
(((MD5UINT4) mdContext->in[ii + 1]) << 8) |
((MD5UINT4) mdContext->in[ii]);
SDLTest_Md5Transform(mdContext->buf, in);
/*
* store buffer in digest
*/
for (i = 0, ii = 0; i < 4; i++, ii += 4) {
mdContext->digest[ii] = (unsigned char) (mdContext->buf[i] & 0xFF);
mdContext->digest[ii + 1] =
(unsigned char) ((mdContext->buf[i] >> 8) & 0xFF);
mdContext->digest[ii + 2] =
(unsigned char) ((mdContext->buf[i] >> 16) & 0xFF);
mdContext->digest[ii + 3] =
(unsigned char) ((mdContext->buf[i] >> 24) & 0xFF);
}
}
/* Basic MD5 step. Transforms buf based on in.
*/
static void SDLTest_Md5Transform(MD5UINT4 * buf, MD5UINT4 * in)
{
MD5UINT4 a = buf[0], b = buf[1], c = buf[2], d = buf[3];
/*
* Round 1
*/
#define S11 7
#define S12 12
#define S13 17
#define S14 22
FF(a, b, c, d, in[0], S11, 3614090360u); /* 1 */
FF(d, a, b, c, in[1], S12, 3905402710u); /* 2 */
FF(c, d, a, b, in[2], S13, 606105819u); /* 3 */
FF(b, c, d, a, in[3], S14, 3250441966u); /* 4 */
FF(a, b, c, d, in[4], S11, 4118548399u); /* 5 */
FF(d, a, b, c, in[5], S12, 1200080426u); /* 6 */
FF(c, d, a, b, in[6], S13, 2821735955u); /* 7 */
FF(b, c, d, a, in[7], S14, 4249261313u); /* 8 */
FF(a, b, c, d, in[8], S11, 1770035416u); /* 9 */
FF(d, a, b, c, in[9], S12, 2336552879u); /* 10 */
FF(c, d, a, b, in[10], S13, 4294925233u); /* 11 */
FF(b, c, d, a, in[11], S14, 2304563134u); /* 12 */
FF(a, b, c, d, in[12], S11, 1804603682u); /* 13 */
FF(d, a, b, c, in[13], S12, 4254626195u); /* 14 */
FF(c, d, a, b, in[14], S13, 2792965006u); /* 15 */
FF(b, c, d, a, in[15], S14, 1236535329u); /* 16 */
/*
* Round 2
*/
#define S21 5
#define S22 9
#define S23 14
#define S24 20
GG(a, b, c, d, in[1], S21, 4129170786u); /* 17 */
GG(d, a, b, c, in[6], S22, 3225465664u); /* 18 */
GG(c, d, a, b, in[11], S23, 643717713u); /* 19 */
GG(b, c, d, a, in[0], S24, 3921069994u); /* 20 */
GG(a, b, c, d, in[5], S21, 3593408605u); /* 21 */
GG(d, a, b, c, in[10], S22, 38016083u); /* 22 */
GG(c, d, a, b, in[15], S23, 3634488961u); /* 23 */
GG(b, c, d, a, in[4], S24, 3889429448u); /* 24 */
GG(a, b, c, d, in[9], S21, 568446438u); /* 25 */
GG(d, a, b, c, in[14], S22, 3275163606u); /* 26 */
GG(c, d, a, b, in[3], S23, 4107603335u); /* 27 */
GG(b, c, d, a, in[8], S24, 1163531501u); /* 28 */
GG(a, b, c, d, in[13], S21, 2850285829u); /* 29 */
GG(d, a, b, c, in[2], S22, 4243563512u); /* 30 */
GG(c, d, a, b, in[7], S23, 1735328473u); /* 31 */
GG(b, c, d, a, in[12], S24, 2368359562u); /* 32 */
/*
* Round 3
*/
#define S31 4
#define S32 11
#define S33 16
#define S34 23
HH(a, b, c, d, in[5], S31, 4294588738u); /* 33 */
HH(d, a, b, c, in[8], S32, 2272392833u); /* 34 */
HH(c, d, a, b, in[11], S33, 1839030562u); /* 35 */
HH(b, c, d, a, in[14], S34, 4259657740u); /* 36 */
HH(a, b, c, d, in[1], S31, 2763975236u); /* 37 */
HH(d, a, b, c, in[4], S32, 1272893353u); /* 38 */
HH(c, d, a, b, in[7], S33, 4139469664u); /* 39 */
HH(b, c, d, a, in[10], S34, 3200236656u); /* 40 */
HH(a, b, c, d, in[13], S31, 681279174u); /* 41 */
HH(d, a, b, c, in[0], S32, 3936430074u); /* 42 */
HH(c, d, a, b, in[3], S33, 3572445317u); /* 43 */
HH(b, c, d, a, in[6], S34, 76029189u); /* 44 */
HH(a, b, c, d, in[9], S31, 3654602809u); /* 45 */
HH(d, a, b, c, in[12], S32, 3873151461u); /* 46 */
HH(c, d, a, b, in[15], S33, 530742520u); /* 47 */
HH(b, c, d, a, in[2], S34, 3299628645u); /* 48 */
/*
* Round 4
*/
#define S41 6
#define S42 10
#define S43 15
#define S44 21
II(a, b, c, d, in[0], S41, 4096336452u); /* 49 */
II(d, a, b, c, in[7], S42, 1126891415u); /* 50 */
II(c, d, a, b, in[14], S43, 2878612391u); /* 51 */
II(b, c, d, a, in[5], S44, 4237533241u); /* 52 */
II(a, b, c, d, in[12], S41, 1700485571u); /* 53 */
II(d, a, b, c, in[3], S42, 2399980690u); /* 54 */
II(c, d, a, b, in[10], S43, 4293915773u); /* 55 */
II(b, c, d, a, in[1], S44, 2240044497u); /* 56 */
II(a, b, c, d, in[8], S41, 1873313359u); /* 57 */
II(d, a, b, c, in[15], S42, 4264355552u); /* 58 */
II(c, d, a, b, in[6], S43, 2734768916u); /* 59 */
II(b, c, d, a, in[13], S44, 1309151649u); /* 60 */
II(a, b, c, d, in[4], S41, 4149444226u); /* 61 */
II(d, a, b, c, in[11], S42, 3174756917u); /* 62 */
II(c, d, a, b, in[2], S43, 718787259u); /* 63 */
II(b, c, d, a, in[9], S44, 3951481745u); /* 64 */
buf[0] += a;
buf[1] += b;
buf[2] += c;
buf[3] += d;
}
/* vi: set ts=4 sw=4 expandtab: */
SDL_test.h
SDLTest_Md5Context::i
MD5UINT4 i[2]
Definition: SDL_test_md5.h:72
MD5PADDING
static unsigned char MD5PADDING[64]
Definition: SDL_test_md5.c:61
S32
#define S32
S42
#define S42
SDLTest_Md5Context::in
unsigned char in[64]
Definition: SDL_test_md5.h:74
SDLTest_Md5Init
void SDLTest_Md5Init(SDLTest_Md5Context *mdContext)
initialize the context
Definition: SDL_test_md5.c:110
SDLTest_Md5Context::buf
MD5UINT4 buf[4]
Definition: SDL_test_md5.h:73
SDLTest_Md5Context
Definition: SDL_test_md5.h:71
HH
#define HH(a, b, c, d, x, s, ac)
Definition: SDL_test_md5.c:94
S23
#define S23
SDL_config.h
S22
#define S22
SDLTest_Md5Transform
static void SDLTest_Md5Transform(MD5UINT4 *buf, MD5UINT4 *in)
Definition: SDL_test_md5.c:232
II
#define II(a, b, c, d, x, s, ac)
Definition: SDL_test_md5.c:99
d
SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char const char SDL_SCANF_FORMAT_STRING const char return SDL_ThreadFunction const char void return Uint32 return Uint32 SDL_AssertionHandler void SDL_SpinLock SDL_atomic_t int int return SDL_atomic_t return void void void return void return int return SDL_AudioSpec SDL_AudioSpec return int int return return int SDL_RWops int SDL_AudioSpec Uint8 ** d
Definition: SDL_dynapi_procs.h:117
S41
#define S41
GG
#define GG(a, b, c, d, x, s, ac)
Definition: SDL_test_md5.c:89
SDLTest_Md5Final
void SDLTest_Md5Final(SDLTest_Md5Context *mdContext)
complete digest computation
Definition: SDL_test_md5.c:180
c
const GLubyte * c
Definition: SDL_opengl_glext.h:11093
S24
#define S24
FF
#define FF(a, b, c, d, x, s, ac)
Definition: SDL_test_md5.c:84
buf
GLenum GLuint GLenum GLsizei const GLchar * buf
Definition: SDL_opengl_glext.h:2480
S14
#define S14
S12
#define S12
S31
#define S31
i
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:50
NULL
#define NULL
Definition: begin_code.h:164
MD5UINT4
unsigned long int MD5UINT4
Definition: SDL_test_md5.h:68
S43
#define S43
S44
#define S44
SDLTest_Md5Update
void SDLTest_Md5Update(SDLTest_Md5Context *mdContext, unsigned char *inBuf, unsigned int inLen)
update digest from variable length data
Definition: SDL_test_md5.c:131
S11
#define S11
S21
#define S21
S13
#define S13
S34
#define S34
a
GLboolean GLboolean GLboolean GLboolean a
Definition: SDL_opengl_glext.h:1109
in
GLuint in
Definition: SDL_opengl_glext.h:7940
b
GLboolean GLboolean GLboolean b
Definition: SDL_opengl_glext.h:1109
S33
#define S33
SDLTest_Md5Context::digest
unsigned char digest[16]
Definition: SDL_test_md5.h:75