fx_crypt_aes.cpp File Reference

(813d9ae984a99e739b99cf694a9d5b24d0a6b7a7)

#include "core/fdrm/fx_crypt.h"
#include <string.h>
#include "core/fxcrt/fx_system.h"
#include "third_party/base/check.h"
#include "third_party/base/check_op.h"

Include dependency graph for fx_crypt_aes.cpp:

Go to the source code of this file.

Macros
#define	mulby2(x)
#define	PUT_32BIT_MSB_FIRST(cp, value)
#define	ADD_ROUND_KEY_4()
#define	MOVEWORD(i)
#define	FMAKEWORD(i)
#define	LASTWORD(i)
#define	FMAKEWORD(i)
#define	LASTWORD(i)

Functions
void	CRYPT_AESSetKey (CRYPT_aes_context *context, const uint8_t *key, uint32_t keylen)
void	CRYPT_AESSetIV (CRYPT_aes_context *context, const uint8_t *iv)
void	CRYPT_AESDecrypt (CRYPT_aes_context *context, uint8_t *dest, const uint8_t *src, uint32_t size)
void	CRYPT_AESEncrypt (CRYPT_aes_context *context, uint8_t *dest, const uint8_t *src, uint32_t size)

Macro Definition Documentation

ADD_ROUND_KEY_4

#define ADD_ROUND_KEY_4

(

)

Value:

  (block[0] ^= *keysched++, block[1] ^= *keysched++, block[2] ^= *keysched++, \
   block[3] ^= *keysched++)

Definition at line 432 of file fx_crypt_aes.cpp.

FMAKEWORD [1/2]

#define FMAKEWORD

(

i

)

Value:

  (newstate[i] = (E0[(block[i] >> 24) & 0xFF] ^             \
                  E1[(block[(i + C1) % Nb] >> 16) & 0xFF] ^ \
                  E2[(block[(i + C2) % Nb] >> 8) & 0xFF] ^  \
                  E3[block[(i + C3) % Nb] & 0xFF]))

Definition at line 436 of file fx_crypt_aes.cpp.

FMAKEWORD [2/2]

#define FMAKEWORD

(

i

)

Value:

  (newstate[i] = (D0[(block[i] >> 24) & 0xFF] ^             \
                  D1[(block[(i + C1) % Nb] >> 16) & 0xFF] ^ \
                  D2[(block[(i + C2) % Nb] >> 8) & 0xFF] ^  \
                  D3[block[(i + C3) % Nb] & 0xFF]))

Definition at line 436 of file fx_crypt_aes.cpp.

LASTWORD [1/2]

#define LASTWORD

(

i

)

Value:

  (newstate[i] = (Sbox[(block[i] >> 24) & 0xFF] << 24) |             \
                 (Sbox[(block[(i + C1) % Nb] >> 16) & 0xFF] << 16) | \
                 (Sbox[(block[(i + C2) % Nb] >> 8) & 0xFF] << 8) |   \
                 (Sbox[(block[(i + C3) % Nb]) & 0xFF]))

Definition at line 441 of file fx_crypt_aes.cpp.

LASTWORD [2/2]

#define LASTWORD

(

i

)

Value:

  (newstate[i] = (Sboxinv[(block[i] >> 24) & 0xFF] << 24) |             \
                 (Sboxinv[(block[(i + C1) % Nb] >> 16) & 0xFF] << 16) | \
                 (Sboxinv[(block[(i + C2) % Nb] >> 8) & 0xFF] << 8) |   \
                 (Sboxinv[(block[(i + C3) % Nb]) & 0xFF]))

Definition at line 441 of file fx_crypt_aes.cpp.

MOVEWORD

#define MOVEWORD

(

i

)

Value:

(block[i] = newstate[i])

Definition at line 435 of file fx_crypt_aes.cpp.

mulby2

#define mulby2

(

x

)

Value:

(((x & 0x7F) << 1) ^ (x & 0x80 ? 0x1B : 0))

Definition at line 15 of file fx_crypt_aes.cpp.

PUT_32BIT_MSB_FIRST

#define PUT_32BIT_MSB_FIRST	(		cp,
			value )

Value:

  do {                                 \
    (cp)[3] = (value);                 \
    (cp)[2] = (value) >> 8;            \
    (cp)[1] = (value) >> 16;           \
    (cp)[0] = (value) >> 24;           \
  } while (0)

Definition at line 16 of file fx_crypt_aes.cpp.

Function Documentation

CRYPT_AESDecrypt()

void CRYPT_AESDecrypt	(	CRYPT_aes_context *	context,
		uint8_t *	dest,
		const uint8_t *	src,
		uint32_t	size )

Definition at line 647 of file fx_crypt_aes.cpp.

CRYPT_AESEncrypt()

void CRYPT_AESEncrypt	(	CRYPT_aes_context *	context,
		uint8_t *	dest,
		const uint8_t *	src,
		uint32_t	size )

Definition at line 654 of file fx_crypt_aes.cpp.

CRYPT_AESSetIV()

void CRYPT_AESSetIV	(	CRYPT_aes_context *	context,
		const uint8_t *	iv )

Definition at line 642 of file fx_crypt_aes.cpp.

References CRYPT_aes_context::iv, and CRYPT_aes_context::Nb.

CRYPT_AESSetKey()

void CRYPT_AESSetKey	(	CRYPT_aes_context *	context,
		const uint8_t *	key,
		uint32_t	keylen )

Definition at line 636 of file fx_crypt_aes.cpp.