fx_crypt.cpp File Reference

(e4657a741c23c8f48e0e97ae2091dc2d99f4f27d)

#include "core/fdrm/fx_crypt.h"
#include <utility>
#include "core/fxcrt/byteorder.h"
#include "core/fxcrt/compiler_specific.h"
#include "core/fxcrt/stl_util.h"

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Macros
#define	S(x, n)
#define	P(a, b, c, d, k, s, t)
#define	F(x, y, z)
#define	F(x, y, z)
#define	F(x, y, z)
#define	F(x, y, z)

Functions
void	CRYPT_ArcFourSetup (CRYPT_rc4_context *context, pdfium::span< const uint8_t > key)
void	CRYPT_ArcFourCrypt (CRYPT_rc4_context *context, pdfium::span< uint8_t > data)
void	CRYPT_ArcFourCryptBlock (pdfium::span< uint8_t > data, pdfium::span< const uint8_t > key)
CRYPT_md5_context	CRYPT_MD5Start ()
void	CRYPT_MD5Update (CRYPT_md5_context *context, pdfium::span< const uint8_t > data)
void	CRYPT_MD5Finish (CRYPT_md5_context *context, pdfium::span< uint8_t, 16 > digest)
void	CRYPT_MD5Generate (pdfium::span< const uint8_t > data, pdfium::span< uint8_t, 16 > digest)

Macro Definition Documentation

F [1/4]

#define F	(		x,
			y,
			z )

Value:

(z ^ (x & (y ^ z)))

F [2/4]

#define F	(		x,
			y,
			z )

Value:

(y ^ (z & (x ^ y)))

F [3/4]

#define F	(		x,
			y,
			z )

Value:

(x ^ y ^ z)

F [4/4]

#define F	(		x,
			y,
			z )

Value:

(y ^ (x | ~z))

P

#define P	(		a,
			b,
			c,
			d,
			k,
			s,
			t )

Value:

  {                             \
    a += F(b, c, d) + X[k] + t; \
    a = S(a, s) + b;            \
  }

S

#define S	(		x,
			n )

Value:

((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))

Function Documentation

CRYPT_ArcFourCrypt()

void CRYPT_ArcFourCrypt	(	CRYPT_rc4_context *	context,
		pdfium::span< uint8_t >	data )

Definition at line 146 of file fx_crypt.cpp.

CRYPT_ArcFourCryptBlock()

void CRYPT_ArcFourCryptBlock	(	pdfium::span< uint8_t >	data,
		pdfium::span< const uint8_t >	key )

Definition at line 157 of file fx_crypt.cpp.

CRYPT_ArcFourSetup()

void CRYPT_ArcFourSetup	(	CRYPT_rc4_context *	context,
		pdfium::span< const uint8_t >	key )

Definition at line 131 of file fx_crypt.cpp.

References CRYPT_rc4_context::kPermutationLength, CRYPT_rc4_context::x, and CRYPT_rc4_context::y.

CRYPT_MD5Finish()

void CRYPT_MD5Finish	(	CRYPT_md5_context *	context,
		pdfium::span< uint8_t, 16 >	digest )

Definition at line 203 of file fx_crypt.cpp.

CRYPT_MD5Generate()

void CRYPT_MD5Generate	(	pdfium::span< const uint8_t >	data,
		pdfium::span< uint8_t, 16 >	digest )

Definition at line 219 of file fx_crypt.cpp.

References CRYPT_MD5Start().

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CRYPT_MD5Start()

CRYPT_md5_context CRYPT_MD5Start

(

)

Definition at line 164 of file fx_crypt.cpp.

Referenced by CRYPT_MD5Generate(), pdfium::CFDETextOutTest::GetBitmapChecksum(), EmbedderTest::HashBitmap(), CPDF_SecurityHandler::OnCreate(), TEST(), TEST(), and TEST().

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CRYPT_MD5Update()

void CRYPT_MD5Update	(	CRYPT_md5_context *	context,
		pdfium::span< const uint8_t >	data )

Definition at line 175 of file fx_crypt.cpp.

References CRYPT_md5_context::buffer.