aes.h File Reference

Headers for aes.c. More...

#include "torint.h"

Go to the source code of this file.

Typedefs
typedef struct aes_cnt_cipher	aes_cnt_cipher_t
Functions
aes_cnt_cipher_t *	aes_new_cipher (void)
void	aes_free_cipher (aes_cnt_cipher_t *cipher)
void	aes_set_key (aes_cnt_cipher_t *cipher, const char *key, int key_bits)
void	aes_crypt (aes_cnt_cipher_t *cipher, const char *input, size_t len, char *output)
void	aes_crypt_inplace (aes_cnt_cipher_t *cipher, char *data, size_t len)
void	aes_set_iv (aes_cnt_cipher_t *cipher, const char *iv)

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Detailed Description

Headers for aes.c.

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Function Documentation

void aes_crypt	(	aes_cnt_cipher_t *	cipher,
		const char *	input,
		size_t	len,
		char *	output
	)

Encrypt len bytes from input, storing the result in output. Uses the key in cipher, and advances the counter by len bytes as it encrypts.

References _aes_fill_buf(), aes_cnt_cipher::buf, and aes_cnt_cipher::pos.

Referenced by crypto_cipher_decrypt(), and crypto_cipher_encrypt().

void aes_crypt_inplace	(	aes_cnt_cipher_t *	cipher,
		char *	data,
		size_t	len
	)

Encrypt len bytes from input, storing the results in place. Uses the key in cipher, and advances the counter by len bytes as it encrypts.

References _aes_fill_buf(), aes_cnt_cipher::buf, and aes_cnt_cipher::pos.

Referenced by crypto_cipher_crypt_inplace().

void aes_free_cipher

(

aes_cnt_cipher_t *

cipher

)

Release storage held by cipher

References tor_free.

Referenced by crypto_free_cipher_env().

aes_cnt_cipher_t* aes_new_cipher

(

void

)

Return a newly allocated counter-mode AES128 cipher implementation.

Referenced by crypto_new_cipher_env().

void aes_set_iv	(	aes_cnt_cipher_t *	cipher,
		const char *	iv
	)

Reset the 128-bit counter of cipher to the 16-bit big-endian value in iv.

References _aes_fill_buf(), aes_cnt_cipher::buf, aes_cnt_cipher::counter0, aes_cnt_cipher::counter1, aes_cnt_cipher::counter2, aes_cnt_cipher::counter3, get_uint32(), and aes_cnt_cipher::pos.

Referenced by crypto_cipher_set_iv().

void aes_set_key	(	aes_cnt_cipher_t *	cipher,
		const char *	key,
		int	key_bits
	)

Set the key of cipher to key, which is key_bits bits long (must be 128, 192, or 256). Also resets the counter to 0.

References _aes_fill_buf(), aes_cnt_cipher::buf, aes_cnt_cipher::counter0, aes_cnt_cipher::counter1, aes_cnt_cipher::counter2, aes_cnt_cipher::counter3, aes_cnt_cipher::nr, aes_cnt_cipher::pos, rijndaelKeySetupEnc(), aes_cnt_cipher::rk, and tor_assert.

Referenced by crypto_cipher_decrypt_init_cipher(), and crypto_cipher_encrypt_init_cipher().