fx_crypt.cpp File Reference

(813d9ae984a99e739b99cf694a9d5b24d0a6b7a7)

#include "core/fdrm/fx_crypt.h"
#include <utility>
#include "core/fxcrt/span_util.h"

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Macros
#define	GET_UINT32(n, b, i)
#define	PUT_UINT32(n, b, i)
#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, uint8_t digest[16])
void	CRYPT_MD5Generate (pdfium::span< const uint8_t > data, uint8_t digest[16])

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))

GET_UINT32

#define GET_UINT32	(		n,
			b,
			i )

Value:

  {                                                    \
    (n) = (uint32_t)((uint8_t*)b)[(i)] |               \
          (((uint32_t)((uint8_t*)b)[(i) + 1]) << 8) |  \
          (((uint32_t)((uint8_t*)b)[(i) + 2]) << 16) | \
          (((uint32_t)((uint8_t*)b)[(i) + 3]) << 24);  \
  }

Definition at line 13 of file fx_crypt.cpp.

P

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

Value:

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

PUT_UINT32

#define PUT_UINT32	(		n,
			b,
			i )

Value:

  {                                                           \
    (((uint8_t*)b)[(i)]) = (uint8_t)(((n)) & 0xFF);           \
    (((uint8_t*)b)[(i) + 1]) = (uint8_t)(((n) >> 8) & 0xFF);  \
    (((uint8_t*)b)[(i) + 2]) = (uint8_t)(((n) >> 16) & 0xFF); \
    (((uint8_t*)b)[(i) + 3]) = (uint8_t)(((n) >> 24) & 0xFF); \
  }

Definition at line 20 of file fx_crypt.cpp.

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 158 of file fx_crypt.cpp.

CRYPT_ArcFourCryptBlock()

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

Definition at line 169 of file fx_crypt.cpp.

CRYPT_ArcFourSetup()

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

Definition at line 143 of file fx_crypt.cpp.

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

CRYPT_MD5Finish()

void CRYPT_MD5Finish	(	CRYPT_md5_context *	context,
		uint8_t	digest[16] )

Definition at line 214 of file fx_crypt.cpp.

References CRYPT_md5_context::state, and CRYPT_md5_context::total.

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

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CRYPT_MD5Generate()

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

Definition at line 228 of file fx_crypt.cpp.

References CRYPT_MD5Finish(), and CRYPT_MD5Start().

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CRYPT_MD5Start()

CRYPT_md5_context CRYPT_MD5Start

(

)

Definition at line 176 of file fx_crypt.cpp.

References CRYPT_md5_context::state, and CRYPT_md5_context::total.

Referenced by CRYPT_MD5Generate(), 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 187 of file fx_crypt.cpp.

References CRYPT_md5_context::buffer, and CRYPT_md5_context::total.