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/*
* UFTP - UDP based FTP with multicast
*
* Copyright (C) 2001-2017 Dennis A. Bush, Jr. bush@tcnj.edu
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Additional permission under GNU GPL version 3 section 7
*
* If you modify this program, or any covered work, by linking or
* combining it with the OpenSSL project's OpenSSL library (or a
* modified version of that library), containing parts covered by the
* terms of the OpenSSL or SSLeay licenses, the copyright holder
* grants you additional permission to convey the resulting work.
* Corresponding Source for a non-source form of such a combination
* shall include the source code for the parts of OpenSSL used as well
* as that of the covered work.
*/
#ifndef _ENCRYPTION_H
#define _ENCRYPTION_H
// This section includes items normally listed in uftp_common.h
// that are required in encrypt_cng.c. See encrypt_cng.c for more details.
#ifdef NO_UFTP_COMMON_H
#include <stdio.h>
extern int showtime;
extern FILE *applog;
extern int log_level;
void logfunc(uint32_t group_id, uint16_t file_id, int level, int _showtime,
int newline, int err, int sockerr, const char *str, ...);
#define clog0(group_id, file_id, ...) \
logfunc(group_id, file_id, 0, showtime, 0, 0, 0, __VA_ARGS__)
#define log0(group_id, file_id, ...) \
logfunc(group_id, file_id, 0, showtime, 1, 0, 0, __VA_ARGS__)
#define sclog2(...) \
logfunc(0, 0, 2, 0, 0, 0, 0, __VA_ARGS__)
#define syserror(group_id, file_id, ...) \
logfunc(group_id, file_id, 0, showtime, 1, errno, 0, __VA_ARGS__)
int is_auth_enc(int keytype);
int is_gcm_mode(int keytype);
int is_ccm_mode(int keytype);
void *safe_malloc(size_t size);
void *safe_calloc(size_t num, size_t size);
#endif
#ifdef NO_ENCRYPTION
typedef void *RSA_key_t;
typedef void *EC_key_t;
#elif defined WINDOWS && !defined OPENSSL &&\
(_WIN32_WINNT >= _WIN32_WINNT_LONGHORN)
#include <windows.h>
#include <bcrypt.h>
#include <ncrypt.h>
typedef NCRYPT_KEY_HANDLE RSA_key_t;
typedef NCRYPT_KEY_HANDLE EC_key_t;
#elif defined WINDOWS && !defined OPENSSL
#include <windows.h>
#include <wincrypt.h>
typedef HCRYPTKEY RSA_key_t;
typedef void *EC_key_t;
#else
#include <openssl/rsa.h>
typedef RSA *RSA_key_t;
#include <openssl/ec.h>
#include <openssl/ecdh.h>
#include <openssl/ecdsa.h>
typedef EC_KEY *EC_key_t;
#endif
union key_t {
uint64_t key;
RSA_key_t rsa;
EC_key_t ec;
};
void crypto_init(int set_sys_key);
void crypto_cleanup(void);
int cipher_supported(int keytype);
int hash_supported(int hashtype);
void get_key_info(int keytype, int *keylen, int *ivlen);
int get_hash_len(int hashtype);
int get_random_bytes(unsigned char *buf, int num);
int encrypt_block(int keytype, const unsigned char *IV,
const unsigned char *key,
const unsigned char *aad, unsigned int aadlen,
const unsigned char *src, unsigned int srclen,
unsigned char *dest, unsigned int *destlen);
int decrypt_block(int keytype, const unsigned char *IV,
const unsigned char *key,
const unsigned char *aad, unsigned int aadlen,
unsigned char *src, unsigned int srclen,
unsigned char *dest, unsigned int *destlen);
int create_hmac(int hashtype, const unsigned char *key, unsigned int keylen,
const unsigned char *src, unsigned int srclen,
unsigned char *dest, unsigned int *destlen);
int hash(int hashtype, const unsigned char *src, unsigned int srclen,
unsigned char *dest, unsigned int *destlen);
int RSA_keylen(const RSA_key_t rsa);
int EC_keylen(const EC_key_t ec);
int ECDSA_siglen(const EC_key_t ec);
int RSA_encrypt(RSA_key_t rsa, const unsigned char *from, unsigned int fromlen,
unsigned char *to, unsigned int *tolen);
int RSA_decrypt(RSA_key_t rsa, const unsigned char *from, unsigned int fromlen,
unsigned char *to, unsigned int *tolen);
int create_RSA_sig(RSA_key_t rsa, int hashtype,
const unsigned char *mes, unsigned int meslen,
unsigned char *sig, unsigned int *siglen);
int verify_RSA_sig(RSA_key_t rsa, int hashtype,
const unsigned char *mes, unsigned int meslen,
unsigned char *sig, unsigned int siglen);
int create_ECDSA_sig(EC_key_t ec, int hashtype,
const unsigned char *mes, unsigned int meslen,
unsigned char *sig, unsigned int *siglen);
int verify_ECDSA_sig(EC_key_t ec, int hashtype,
const unsigned char *mes, unsigned int meslen,
const unsigned char *sig, unsigned int siglen);
int get_ECDH_key(EC_key_t pubkey, EC_key_t privkey, unsigned char *key,
unsigned int *keylen);
int import_RSA_key(RSA_key_t *rsa, const unsigned char *keyblob,
uint16_t bloblen);
int export_RSA_key(const RSA_key_t rsa, unsigned char *keyblob,
uint16_t *bloblen);
int import_EC_key(EC_key_t *ec, const unsigned char *keyblob, uint16_t bloblen,
int isdh);
int export_EC_key(const EC_key_t ec, unsigned char *keyblob, uint16_t *bloblen);
RSA_key_t gen_RSA_key(int bits, int exponent, const char *filename);
RSA_key_t read_RSA_key(const char *filename);
EC_key_t gen_EC_key(uint8_t curve, int isdh, const char *filename);
EC_key_t read_EC_key(const char *filename);
union key_t read_private_key(const char *filename, int *keytype);
uint8_t get_EC_curve(const EC_key_t ec);
void free_RSA_key(RSA_key_t rsa);
void free_EC_key(EC_key_t ec);
const char *get_next_container(void);
void delete_container(const char *name);
void set_sys_keys(int set);
#endif // _ENCRYPTION_H
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