Tor 0.4.9.0-alpha-dev
crypto_cipher.h
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1/* Copyright (c) 2001, Matej Pfajfar.
2 * Copyright (c) 2001-2004, Roger Dingledine.
3 * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
4 * Copyright (c) 2007-2021, The Tor Project, Inc. */
5/* See LICENSE for licensing information */
6
7/**
8 * \file crypto_cipher.h
9 *
10 * \brief Headers for crypto_cipher.c
11 **/
12
13#ifndef TOR_CRYPTO_CIPHER_H
14#define TOR_CRYPTO_CIPHER_H
15
16#include "orconfig.h"
17
18#include <stdio.h>
19#include "lib/cc/torint.h"
20
21/** Length of our symmetric cipher's keys of 128-bit. */
22#define CIPHER_KEY_LEN 16
23/** Length of our symmetric cipher's IV of 128-bit. */
24#define CIPHER_IV_LEN 16
25/** Length of our symmetric cipher's keys of 256-bit. */
26#define CIPHER256_KEY_LEN 32
27
28typedef struct aes_cnt_cipher_t crypto_cipher_t;
29
30/* environment setup */
31crypto_cipher_t *crypto_cipher_new(const char *key);
32crypto_cipher_t *crypto_cipher_new_with_bits(const char *key, int bits);
33crypto_cipher_t *crypto_cipher_new_with_iv(const char *key, const char *iv);
34crypto_cipher_t *crypto_cipher_new_with_iv_and_bits(const uint8_t *key,
35 const uint8_t *iv,
36 int bits);
37void crypto_cipher_free_(crypto_cipher_t *env);
38#define crypto_cipher_free(c) \
39 FREE_AND_NULL(crypto_cipher_t, crypto_cipher_free_, (c))
40
41/* symmetric crypto */
42const char *crypto_cipher_get_key(crypto_cipher_t *env);
43
44int crypto_cipher_encrypt(crypto_cipher_t *env, char *to,
45 const char *from, size_t fromlen);
46int crypto_cipher_decrypt(crypto_cipher_t *env, char *to,
47 const char *from, size_t fromlen);
48void crypto_cipher_crypt_inplace(crypto_cipher_t *env, char *d, size_t len);
49
50int crypto_cipher_encrypt_with_iv(const char *key,
51 char *to, size_t tolen,
52 const char *from, size_t fromlen);
53int crypto_cipher_decrypt_with_iv(const char *key,
54 char *to, size_t tolen,
55 const char *from, size_t fromlen);
56
57#endif /* !defined(TOR_CRYPTO_CIPHER_H) */
crypto_cipher_t * crypto_cipher_new_with_bits(const char *key, int bits)
Definition: crypto_cipher.c:54
int crypto_cipher_decrypt_with_iv(const char *key, char *to, size_t tolen, const char *from, size_t fromlen)
crypto_cipher_t * crypto_cipher_new_with_iv(const char *key, const char *iv)
Definition: crypto_cipher.c:44
int crypto_cipher_decrypt(crypto_cipher_t *env, char *to, const char *from, size_t fromlen)
int crypto_cipher_encrypt_with_iv(const char *key, char *to, size_t tolen, const char *from, size_t fromlen)
crypto_cipher_t * crypto_cipher_new_with_iv_and_bits(const uint8_t *key, const uint8_t *iv, int bits)
Definition: crypto_cipher.c:29
void crypto_cipher_crypt_inplace(crypto_cipher_t *env, char *d, size_t len)
int crypto_cipher_encrypt(crypto_cipher_t *env, char *to, const char *from, size_t fromlen)
Definition: crypto_cipher.c:88
void crypto_cipher_free_(crypto_cipher_t *env)
Definition: crypto_cipher.c:73
crypto_cipher_t * crypto_cipher_new(const char *key)
Definition: crypto_cipher.c:65
Integer definitions used throughout Tor.