SDL  2.0
Macros | Functions | Variables
SDL_test_md5.c File Reference
#include "SDL_config.h"
#include "SDL_test.h"
+ Include dependency graph for SDL_test_md5.c:

Go to the source code of this file.

Macros

#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)))
#define ROTATE_LEFT(x, n)   (((x) << (n)) | ((x) >> (32-(n))))
#define FF(a, b, c, d, x, s, ac)
#define GG(a, b, c, d, x, s, ac)
#define HH(a, b, c, d, x, s, ac)
#define II(a, b, c, d, x, s, ac)
#define S11   7
#define S12   12
#define S13   17
#define S14   22
#define S21   5
#define S22   9
#define S23   14
#define S24   20
#define S31   4
#define S32   11
#define S33   16
#define S34   23
#define S41   6
#define S42   10
#define S43   15
#define S44   21

Functions

static void SDLTest_Md5Transform (MD5UINT4 *buf, MD5UINT4 *in)
void SDLTest_Md5Init (SDLTest_Md5Context *mdContext)
 initialize the context
void SDLTest_Md5Update (SDLTest_Md5Context *mdContext, unsigned char *inBuf, unsigned int inLen)
 update digest from variable length data
void SDLTest_Md5Final (SDLTest_Md5Context *mdContext)
 complete digest computation

Variables

static unsigned char MD5PADDING [64]

Macro Definition Documentation

#define F (   x,
  y,
  z 
)    (((x) & (y)) | ((~x) & (z)))

Definition at line 73 of file SDL_test_md5.c.

Referenced by SDL_MixAudioFormat().

#define FF (   a,
  b,
  c,
  d,
  x,
  s,
  ac 
)
Value:
{(a) += F ((b), (c), (d)) + (x) + (MD5UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}

Definition at line 84 of file SDL_test_md5.c.

Referenced by SDLTest_Md5Transform().

#define G (   x,
  y,
  z 
)    (((x) & (z)) | ((y) & (~z)))

Definition at line 74 of file SDL_test_md5.c.

Referenced by Map1toN(), RGBtoYUV(), SDL_Blit_ABGR8888_ARGB8888_Modulate(), SDL_Blit_ABGR8888_ARGB8888_Modulate_Scale(), SDL_Blit_ABGR8888_ARGB8888_Scale(), SDL_Blit_ABGR8888_BGR888_Modulate(), SDL_Blit_ABGR8888_BGR888_Modulate_Scale(), SDL_Blit_ABGR8888_BGR888_Scale(), SDL_Blit_ABGR8888_RGB888_Modulate(), SDL_Blit_ABGR8888_RGB888_Modulate_Scale(), SDL_Blit_ABGR8888_RGB888_Scale(), SDL_Blit_ARGB8888_ARGB8888_Modulate(), SDL_Blit_ARGB8888_ARGB8888_Modulate_Scale(), SDL_Blit_ARGB8888_BGR888_Modulate(), SDL_Blit_ARGB8888_BGR888_Modulate_Scale(), SDL_Blit_ARGB8888_BGR888_Scale(), SDL_Blit_ARGB8888_RGB888_Modulate(), SDL_Blit_ARGB8888_RGB888_Modulate_Scale(), SDL_Blit_ARGB8888_RGB888_Scale(), SDL_Blit_BGR888_ARGB8888_Modulate(), SDL_Blit_BGR888_ARGB8888_Modulate_Scale(), SDL_Blit_BGR888_ARGB8888_Scale(), SDL_Blit_BGR888_BGR888_Modulate(), SDL_Blit_BGR888_BGR888_Modulate_Scale(), SDL_Blit_BGR888_RGB888_Modulate(), SDL_Blit_BGR888_RGB888_Modulate_Scale(), SDL_Blit_BGR888_RGB888_Scale(), SDL_Blit_BGRA8888_ARGB8888_Modulate(), SDL_Blit_BGRA8888_ARGB8888_Modulate_Scale(), SDL_Blit_BGRA8888_ARGB8888_Scale(), SDL_Blit_BGRA8888_BGR888_Modulate(), SDL_Blit_BGRA8888_BGR888_Modulate_Scale(), SDL_Blit_BGRA8888_BGR888_Scale(), SDL_Blit_BGRA8888_RGB888_Modulate(), SDL_Blit_BGRA8888_RGB888_Modulate_Scale(), SDL_Blit_BGRA8888_RGB888_Scale(), SDL_Blit_RGB888_ARGB8888_Modulate(), SDL_Blit_RGB888_ARGB8888_Modulate_Scale(), SDL_Blit_RGB888_ARGB8888_Scale(), SDL_Blit_RGB888_BGR888_Modulate(), SDL_Blit_RGB888_BGR888_Modulate_Scale(), SDL_Blit_RGB888_BGR888_Scale(), SDL_Blit_RGB888_RGB888_Modulate(), SDL_Blit_RGB888_RGB888_Modulate_Scale(), SDL_Blit_RGBA8888_ARGB8888_Modulate(), SDL_Blit_RGBA8888_ARGB8888_Modulate_Scale(), SDL_Blit_RGBA8888_ARGB8888_Scale(), SDL_Blit_RGBA8888_BGR888_Modulate(), SDL_Blit_RGBA8888_BGR888_Modulate_Scale(), SDL_Blit_RGBA8888_BGR888_Scale(), SDL_Blit_RGBA8888_RGB888_Modulate(), SDL_Blit_RGBA8888_RGB888_Modulate_Scale(), SDL_Blit_RGBA8888_RGB888_Scale(), SDL_ConvertPixels_ARGB8888_to_YUV(), and SDLTest_CompareSurfaces().

#define GG (   a,
  b,
  c,
  d,
  x,
  s,
  ac 
)
Value:
{(a) += G ((b), (c), (d)) + (x) + (MD5UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}

Definition at line 89 of file SDL_test_md5.c.

Referenced by SDLTest_Md5Transform().

#define H (   x,
  y,
  z 
)    ((x) ^ (y) ^ (z))

Definition at line 75 of file SDL_test_md5.c.

#define HH (   a,
  b,
  c,
  d,
  x,
  s,
  ac 
)
Value:
{(a) += H ((b), (c), (d)) + (x) + (MD5UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}

Definition at line 94 of file SDL_test_md5.c.

Referenced by SDLTest_Md5Transform().

#define I (   x,
  y,
  z 
)    ((y) ^ ((x) | (~z)))

Definition at line 76 of file SDL_test_md5.c.

#define II (   a,
  b,
  c,
  d,
  x,
  s,
  ac 
)
Value:
{(a) += I ((b), (c), (d)) + (x) + (MD5UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}

Definition at line 99 of file SDL_test_md5.c.

Referenced by SDLTest_Md5Transform().

#define ROTATE_LEFT (   x,
  n 
)    (((x) << (n)) | ((x) >> (32-(n))))

Definition at line 79 of file SDL_test_md5.c.

#define S11   7

Referenced by SDLTest_Md5Transform().

#define S12   12

Referenced by SDLTest_Md5Transform().

#define S13   17

Referenced by SDLTest_Md5Transform().

#define S14   22

Referenced by SDLTest_Md5Transform().

#define S21   5

Referenced by SDLTest_Md5Transform().

#define S22   9

Referenced by SDLTest_Md5Transform().

#define S23   14

Referenced by SDLTest_Md5Transform().

#define S24   20

Referenced by SDLTest_Md5Transform().

#define S31   4

Referenced by SDLTest_Md5Transform().

#define S32   11

Referenced by SDL_ParseAudioFormat(), and SDLTest_Md5Transform().

#define S33   16

Referenced by SDLTest_Md5Transform().

#define S34   23

Referenced by SDLTest_Md5Transform().

#define S41   6

Referenced by SDLTest_Md5Transform().

#define S42   10

Referenced by SDLTest_Md5Transform().

#define S43   15

Referenced by SDLTest_Md5Transform().

#define S44   21

Referenced by SDLTest_Md5Transform().

Function Documentation

void SDLTest_Md5Final ( SDLTest_Md5Context *  mdContext)

complete digest computation

Parameters
mdContextpointer to context variable

Note: The function terminates the message-digest computation and ends with the desired message digest in mdContext.digest[0..15]. Always call before using the digest[] variable.

Definition at line 180 of file SDL_test_md5.c.

References SDLTest_Md5Context::buf, SDLTest_Md5Context::digest, i, SDLTest_Md5Context::i, SDLTest_Md5Context::in, MD5PADDING, NULL, SDLTest_Md5Transform(), and SDLTest_Md5Update().

Referenced by SDLTest_GenerateExecKey().

{
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);
}
}
void SDLTest_Md5Init ( SDLTest_Md5Context *  mdContext)

initialize the context

Parameters
mdContextpointer to context variable

Note: The function initializes the message-digest context mdContext. Call before each new use of the context - all fields are set to zero.

Definition at line 110 of file SDL_test_md5.c.

References SDLTest_Md5Context::buf, SDLTest_Md5Context::i, and NULL.

Referenced by SDLTest_GenerateExecKey().

{
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;
}
static void SDLTest_Md5Transform ( MD5UINT4 *  buf,
MD5UINT4 *  in 
)
static

Definition at line 232 of file SDL_test_md5.c.

References d, FF, GG, HH, II, S11, S12, S13, S14, S21, S22, S23, S24, S31, S32, S33, S34, S41, S42, S43, and S44.

Referenced by SDLTest_Md5Final(), and SDLTest_Md5Update().

{
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;
}
void SDLTest_Md5Update ( SDLTest_Md5Context *  mdContext,
unsigned char *  inBuf,
unsigned int  inLen 
)

update digest from variable length data

Parameters
mdContextpointer to context variable
inBufpointer to data array/string
inLenlength of data array/string

Note: The function 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.

Definition at line 131 of file SDL_test_md5.c.

References SDLTest_Md5Context::buf, i, SDLTest_Md5Context::i, SDLTest_Md5Context::in, NULL, and SDLTest_Md5Transform().

Referenced by SDLTest_GenerateExecKey(), and SDLTest_Md5Final().

{
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;
}
}
}

Variable Documentation

unsigned char MD5PADDING[64]
static
Initial value:
{
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
}

Definition at line 61 of file SDL_test_md5.c.

Referenced by SDLTest_Md5Final().