mirror of
https://gitlab.torproject.org/tpo/core/tor.git
synced 2024-11-14 15:23:27 +01:00
80 lines
2.8 KiB
C
80 lines
2.8 KiB
C
/* Copyright (c) 2012-2016, The Tor Project, Inc. */
|
|
/* See LICENSE for licensing information */
|
|
|
|
#ifndef TOR_CRYPTO_CURVE25519_H
|
|
#define TOR_CRYPTO_CURVE25519_H
|
|
|
|
#include "testsupport.h"
|
|
#include "torint.h"
|
|
|
|
/** Length of a curve25519 public key when encoded. */
|
|
#define CURVE25519_PUBKEY_LEN 32
|
|
/** Length of a curve25519 secret key when encoded. */
|
|
#define CURVE25519_SECKEY_LEN 32
|
|
/** Length of the result of a curve25519 handshake. */
|
|
#define CURVE25519_OUTPUT_LEN 32
|
|
|
|
/** Wrapper type for a curve25519 public key */
|
|
typedef struct curve25519_public_key_t {
|
|
uint8_t public_key[CURVE25519_PUBKEY_LEN];
|
|
} curve25519_public_key_t;
|
|
|
|
/** Wrapper type for a curve25519 secret key */
|
|
typedef struct curve25519_secret_key_t {
|
|
uint8_t secret_key[CURVE25519_SECKEY_LEN];
|
|
} curve25519_secret_key_t;
|
|
|
|
/** A paired public and private key for curve25519. **/
|
|
typedef struct curve25519_keypair_t {
|
|
curve25519_public_key_t pubkey;
|
|
curve25519_secret_key_t seckey;
|
|
} curve25519_keypair_t;
|
|
|
|
/* These functions require that we actually know how to use curve25519 keys.
|
|
* The other data structures and functions in this header let us parse them,
|
|
* store them, and move them around.
|
|
*/
|
|
|
|
int curve25519_public_key_is_ok(const curve25519_public_key_t *);
|
|
|
|
int curve25519_secret_key_generate(curve25519_secret_key_t *key_out,
|
|
int extra_strong);
|
|
void curve25519_public_key_generate(curve25519_public_key_t *key_out,
|
|
const curve25519_secret_key_t *seckey);
|
|
int curve25519_keypair_generate(curve25519_keypair_t *keypair_out,
|
|
int extra_strong);
|
|
|
|
void curve25519_handshake(uint8_t *output,
|
|
const curve25519_secret_key_t *,
|
|
const curve25519_public_key_t *);
|
|
|
|
int curve25519_keypair_write_to_file(const curve25519_keypair_t *keypair,
|
|
const char *fname,
|
|
const char *tag);
|
|
|
|
int curve25519_keypair_read_from_file(curve25519_keypair_t *keypair_out,
|
|
char **tag_out,
|
|
const char *fname);
|
|
|
|
int curve25519_rand_seckey_bytes(uint8_t *out, int extra_strong);
|
|
|
|
#ifdef CRYPTO_CURVE25519_PRIVATE
|
|
STATIC int curve25519_impl(uint8_t *output, const uint8_t *secret,
|
|
const uint8_t *basepoint);
|
|
|
|
STATIC int curve25519_basepoint_impl(uint8_t *output, const uint8_t *secret);
|
|
#endif
|
|
|
|
#define CURVE25519_BASE64_PADDED_LEN 44
|
|
|
|
int curve25519_public_from_base64(curve25519_public_key_t *pkey,
|
|
const char *input);
|
|
int curve25519_public_to_base64(char *output,
|
|
const curve25519_public_key_t *pkey);
|
|
|
|
void curve25519_set_impl_params(int use_ed);
|
|
void curve25519_init(void);
|
|
|
|
#endif
|
|
|