aes-internal-dec.c File Reference

#include "includes.h"
#include "common.h"
#include "crypto.h"
#include "aes.h"

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Defines
#define	ROUND(i, d, s)
Functions
void	aes_decrypt (void *ctx, const u8 *crypt, u8 *plain)
void	aes_decrypt_deinit (void *ctx)
void *	aes_decrypt_init (const u8 *key, size_t len)
static void	rijndaelDecrypt (const u32 rk[], const u8 ct[16], u8 pt[16])
void	rijndaelKeySetupDec (u32 rk[], const u8 cipherKey[])

---

Define Documentation

#define ROUND	(	i,
		d,
		s		)

Value:

d##0 = TD0(s##0) ^ TD1(s##3) ^ TD2(s##2) ^ TD3(s##1) ^ rk[4 * i]; \
d##1 = TD0(s##1) ^ TD1(s##0) ^ TD2(s##3) ^ TD3(s##2) ^ rk[4 * i + 1]; \
d##2 = TD0(s##2) ^ TD1(s##1) ^ TD2(s##0) ^ TD3(s##3) ^ rk[4 * i + 2]; \
d##3 = TD0(s##3) ^ TD1(s##2) ^ TD2(s##1) ^ TD3(s##0) ^ rk[4 * i + 3]

---

Function Documentation

void aes_decrypt	(	void *	ctx,
		const u8 *	crypt,
		u8 *	plain
	)

aes_decrypt - Decrypt one AES block : Context pointer from aes_encrypt_init() : Encrypted data (16 bytes) : Buffer for the decrypted data (16 bytes)

Definition at line 141 of file aes-internal-dec.c.

void aes_decrypt_deinit

(

void *

ctx

)

aes_decrypt_deinit - Deinitialize AES decryption : Context pointer from aes_encrypt_init()

Definition at line 147 of file aes-internal-dec.c.

void* aes_decrypt_init	(	const u8 *	key,
		size_t	len
	)

aes_decrypt_init - Initialize AES for decryption : Decryption key : Key length in bytes (usually 16, i.e., 128 bits) Returns: Pointer to context data or NULL on failure

Definition at line 62 of file aes-internal-dec.c.

static void rijndaelDecrypt	(	const u32	rk[],
		const u8	ct[16],
		u8	pt[16]
	)			[static]

Definition at line 74 of file aes-internal-dec.c.

void rijndaelKeySetupDec	(	u32	rk[],
		const u8	cipherKey[]
	)

Expand the cipher key into the decryption key schedule.

Returns:

the number of rounds for the given cipher key size.

Definition at line 35 of file aes-internal-dec.c.