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/* Copyright (c) 2001, Matej Pfajfar.
* Copyright (c) 2001-2004, Roger Dingledine.
* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
* Copyright (c) 2007-2017, The Tor Project, Inc. */
/* See LICENSE for licensing information */
/**
* \file crypto_rsa.h
*
* \brief Headers for crypto_rsa.c
**/
#ifndef TOR_CRYPTO_RSA_H
#define TOR_CRYPTO_RSA_H
#include "orconfig.h"
#include <stdio.h>
#include "torint.h"
#include "testsupport.h"
#include "compat.h"
#include "util.h"
#include "torlog.h"
#include "crypto_curve25519.h"
/** Length of our public keys. */
#define PK_BYTES (1024/8)
/** Constant used to indicate OAEP padding for public-key encryption */
#define PK_PKCS1_OAEP_PADDING 60002
/** Number of bytes added for PKCS1-OAEP padding. */
#define PKCS1_OAEP_PADDING_OVERHEAD 42
/** A public key, or a public/private key-pair. */
typedef struct crypto_pk_t crypto_pk_t;
/* RSA enviroment setup */
MOCK_DECL(crypto_pk_t *,crypto_pk_new,(void));
void crypto_pk_free_(crypto_pk_t *env);
#define crypto_pk_free(pk) FREE_AND_NULL(crypto_pk_t, crypto_pk_free_, (pk))
int crypto_get_rsa_padding_overhead(int padding);
int crypto_get_rsa_padding(int padding);
/* public key crypto */
MOCK_DECL(int, crypto_pk_generate_key_with_bits,(crypto_pk_t *env, int bits));
#define crypto_pk_generate_key(env) \
crypto_pk_generate_key_with_bits((env), (PK_BYTES*8))
int crypto_pk_read_private_key_from_filename(crypto_pk_t *env,
const char *keyfile);
int crypto_pk_write_public_key_to_string(crypto_pk_t *env,
char **dest, size_t *len);
int crypto_pk_write_private_key_to_string(crypto_pk_t *env,
char **dest, size_t *len);
int crypto_pk_read_public_key_from_string(crypto_pk_t *env,
const char *src, size_t len);
int crypto_pk_read_private_key_from_string(crypto_pk_t *env,
const char *s, ssize_t len);
int crypto_pk_write_private_key_to_filename(crypto_pk_t *env,
const char *fname);
int crypto_pk_check_key(crypto_pk_t *env);
int crypto_pk_cmp_keys(const crypto_pk_t *a, const crypto_pk_t *b);
int crypto_pk_eq_keys(const crypto_pk_t *a, const crypto_pk_t *b);
size_t crypto_pk_keysize(const crypto_pk_t *env);
int crypto_pk_num_bits(crypto_pk_t *env);
crypto_pk_t *crypto_pk_dup_key(crypto_pk_t *orig);
crypto_pk_t *crypto_pk_copy_full(crypto_pk_t *orig);
int crypto_pk_key_is_private(const crypto_pk_t *key);
int crypto_pk_public_exponent_ok(crypto_pk_t *env);
int crypto_pk_public_encrypt(crypto_pk_t *env, char *to, size_t tolen,
const char *from, size_t fromlen, int padding);
int crypto_pk_private_decrypt(crypto_pk_t *env, char *to, size_t tolen,
const char *from, size_t fromlen,
int padding, int warnOnFailure);
MOCK_DECL(int, crypto_pk_public_checksig,(const crypto_pk_t *env,
char *to, size_t tolen,
const char *from, size_t fromlen));
int crypto_pk_private_sign(const crypto_pk_t *env, char *to, size_t tolen,
const char *from, size_t fromlen);
int crypto_pk_asn1_encode(const crypto_pk_t *pk, char *dest, size_t dest_len);
crypto_pk_t *crypto_pk_asn1_decode(const char *str, size_t len);
int crypto_pk_get_fingerprint(crypto_pk_t *pk, char *fp_out,int add_space);
int crypto_pk_get_hashed_fingerprint(crypto_pk_t *pk, char *fp_out);
int crypto_pk_base64_encode(const crypto_pk_t *pk, char **priv_out);
crypto_pk_t *crypto_pk_base64_decode(const char *str, size_t len);
/* Prototypes for private functions only used by tortls.c, crypto.c, and the
* unit tests. */
struct rsa_st;
struct rsa_st *crypto_pk_get_rsa_(crypto_pk_t *env);
crypto_pk_t *crypto_new_pk_from_rsa_(struct rsa_st *rsa);
MOCK_DECL(struct evp_pkey_st *, crypto_pk_get_evp_pkey_,(crypto_pk_t *env,
int private));
struct evp_pkey_st;
#ifdef TOR_UNIT_TESTS
void crypto_pk_assign_(crypto_pk_t *dest, const crypto_pk_t *src);
#endif
#endif
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