ReactOS  0.4.13-dev-464-g6b95727
rc4.h File Reference
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Classes

struct  _RC4_CONTEXT
 

Typedefs

typedef struct _RC4_CONTEXT RC4_CONTEXT
 

Functions

void rc4_init (RC4_CONTEXT *a4i, const unsigned char *key, unsigned int keyLen)
 
void rc4_crypt (RC4_CONTEXT *a4i, unsigned char *inoutString, unsigned int length)
 

Typedef Documentation

◆ RC4_CONTEXT

Function Documentation

◆ rc4_crypt()

void rc4_crypt ( RC4_CONTEXT a4i,
unsigned char inoutString,
unsigned int  length 
)

Definition at line 47 of file rc4.c.

48 {
49  unsigned char *const s=a4i->state;
50  unsigned int x = a4i->x;
51  unsigned int y = a4i->y;
52  unsigned int a, b;
53 
54  while(length--)
55  {
56  x = (x+1) & 0xff;
57  a = s[x];
58  y = (y+a) & 0xff;
59  b = s[y];
60  s[x] = b;
61  s[y] = a;
62  *inoutString++ ^= s[(a+b) & 0xff];
63  }
64 
65  a4i->x = x;
66  a4i->y = y;
67 }
GLint GLint GLint GLint GLint x
Definition: gl.h:1548
#define a
Definition: ke_i.h:78
unsigned char x
Definition: rc4.h:7
#define b
Definition: ke_i.h:79
GLboolean GLboolean GLboolean b
Definition: glext.h:6204
unsigned char state[256]
Definition: rc4.h:6
GLenum GLuint GLenum GLsizei length
Definition: glext.h:5579
GLdouble s
Definition: gl.h:2039
unsigned char y
Definition: rc4.h:7
GLint GLint GLint GLint GLint GLint y
Definition: gl.h:1548
GLboolean GLboolean GLboolean GLboolean a
Definition: glext.h:6204

Referenced by SystemFunction032().

◆ rc4_init()

void rc4_init ( RC4_CONTEXT a4i,
const unsigned char key,
unsigned int  keyLen 
)

Definition at line 25 of file rc4.c.

26 {
27  unsigned int keyIndex = 0, stateIndex = 0;
28  unsigned int i, a;
29 
30  a4i->x = a4i->y = 0;
31 
32  for (i=0; i<256; i++)
33  a4i->state[i] = i;
34 
35  for (i=0; i<256; i++)
36  {
37  a = a4i->state[i];
38  stateIndex += key[keyIndex] + a;
39  stateIndex &= 0xff;
40  a4i->state[i] = a4i->state[stateIndex];
41  a4i->state[stateIndex] = a;
42  if (++keyIndex >= keyLen)
43  keyIndex = 0;
44  }
45 }
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
#define a
Definition: ke_i.h:78
unsigned char x
Definition: rc4.h:7
unsigned char state[256]
Definition: rc4.h:6
#define for
Definition: utility.h:88
unsigned char y
Definition: rc4.h:7
GLboolean GLboolean GLboolean GLboolean a
Definition: glext.h:6204
Definition: path.c:42

Referenced by SystemFunction032().