view signkey.h @ 1659:d32bcb5c557d

Add Ed25519 support (#91) * Add support for Ed25519 as a public key type Ed25519 is a elliptic curve signature scheme that offers better security than ECDSA and DSA and good performance. It may be used for both user and host keys. OpenSSH key import and fuzzer are not supported yet. Initially inspired by Peter Szabo. * Add curve25519 and ed25519 fuzzers * Add import and export of Ed25519 keys
author Vladislav Grishenko <themiron@users.noreply.github.com>
date Wed, 11 Mar 2020 21:09:45 +0500
parents 06d52bcb8094
children ba6fc7afe1c5
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/*
 * Dropbear - a SSH2 server
 * 
 * Copyright (c) 2002,2003 Matt Johnston
 * All rights reserved.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE. */

#ifndef DROPBEAR_SIGNKEY_H_
#define DROPBEAR_SIGNKEY_H_

#include "buffer.h"
#include "dss.h"
#include "rsa.h"
#include "ed25519.h"

enum signkey_type {
#if DROPBEAR_RSA
	DROPBEAR_SIGNKEY_RSA,
#endif
#if DROPBEAR_DSS
	DROPBEAR_SIGNKEY_DSS,
#endif
#if DROPBEAR_ECDSA
	DROPBEAR_SIGNKEY_ECDSA_NISTP256,
	DROPBEAR_SIGNKEY_ECDSA_NISTP384,
	DROPBEAR_SIGNKEY_ECDSA_NISTP521,
#endif /* DROPBEAR_ECDSA */
#if DROPBEAR_ED25519
	DROPBEAR_SIGNKEY_ED25519,
#endif
	DROPBEAR_SIGNKEY_NUM_NAMED,
	DROPBEAR_SIGNKEY_ECDSA_KEYGEN = 70, /* just "ecdsa" for keygen */
	DROPBEAR_SIGNKEY_ANY = 80,
	DROPBEAR_SIGNKEY_NONE = 90,
};


/* Sources for signing keys */
typedef enum {
	SIGNKEY_SOURCE_RAW_FILE,
	SIGNKEY_SOURCE_AGENT,
	SIGNKEY_SOURCE_INVALID,	
} signkey_source;

struct SIGN_key {

	enum signkey_type type;
	signkey_source source;
	char *filename;

#if DROPBEAR_DSS
	dropbear_dss_key * dsskey;
#endif
#if DROPBEAR_RSA
	dropbear_rsa_key * rsakey;
#endif
#if DROPBEAR_ECDSA
#if DROPBEAR_ECC_256
	ecc_key * ecckey256;
#endif
#if DROPBEAR_ECC_384
	ecc_key * ecckey384;
#endif
#if DROPBEAR_ECC_521
	ecc_key * ecckey521;
#endif
#endif
#if DROPBEAR_ED25519
	dropbear_ed25519_key * ed25519key;
#endif
};

typedef struct SIGN_key sign_key;

sign_key * new_sign_key(void);
const char* signkey_name_from_type(enum signkey_type type, unsigned int *namelen);
enum signkey_type signkey_type_from_name(const char* name, unsigned int namelen);
int buf_get_pub_key(buffer *buf, sign_key *key, enum signkey_type *type);
int buf_get_priv_key(buffer* buf, sign_key *key, enum signkey_type *type);
void buf_put_pub_key(buffer* buf, sign_key *key, enum signkey_type type);
void buf_put_priv_key(buffer* buf, sign_key *key, enum signkey_type type);
void sign_key_free(sign_key *key);
void buf_put_sign(buffer* buf, sign_key *key, enum signkey_type type, const buffer *data_buf);
#if DROPBEAR_SIGNKEY_VERIFY
int buf_verify(buffer * buf, sign_key *key, const buffer *data_buf);
char * sign_key_fingerprint(const unsigned char* keyblob, unsigned int keybloblen);
#endif
int cmp_base64_key(const unsigned char* keyblob, unsigned int keybloblen, 
					const unsigned char* algoname, unsigned int algolen, 
					const buffer * line, char ** fingerprint);

void** signkey_key_ptr(sign_key *key, enum signkey_type type);

#endif /* DROPBEAR_SIGNKEY_H_ */