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key.h
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/* $OpenBSD: key.h,v 1.34 2012/05/23 03:28:28 djm Exp $ */
/*
* Copyright (c) 2000, 2001 Markus Friedl. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef KEY_H
#define KEY_H
#include <sys/types.h>
#include <openssl/rsa.h>
#include <openssl/dsa.h>
#include <openssl/ec.h>
#ifdef WITH_LEAKMALLOC
#include "leakmalloc.h"
#endif
#define SSH_RSA_MINIMUM_MODULUS_SIZE 768
#define SSH_KEY_MAX_SIGN_DATA_SIZE (1 << 20)
/* XXX compat, remove when we can */
#define types sshkey_types
#define fp_type sshkey_fp_type
#define fp_rep sshkey_fp_rep
struct sshbuf;
/* Key types */
enum sshkey_types {
KEY_RSA1,
KEY_RSA,
KEY_DSA,
KEY_ECDSA,
KEY_RSA_CERT,
KEY_DSA_CERT,
KEY_ECDSA_CERT,
KEY_RSA_CERT_V00,
KEY_DSA_CERT_V00,
KEY_UNSPEC
};
/* Fingerprint hash algorithms */
/* XXX add SHA256 */
enum sshkey_fp_type {
SSH_FP_SHA1,
SSH_FP_MD5,
SSH_FP_SHA256
};
/* Fingerprint representation formats */
enum sshkey_fp_rep {
SSH_FP_HEX,
SSH_FP_BUBBLEBABBLE,
SSH_FP_RANDOMART
};
/* key is stored in external hardware */
#define SSHKEY_FLAG_EXT 0x0001
#define SSHKEY_CERT_MAX_PRINCIPALS 256
/* XXX opaquify? */
struct sshkey_cert {
struct sshbuf *certblob; /* Kept around for use on wire */
u_int type; /* SSH2_CERT_TYPE_USER or SSH2_CERT_TYPE_HOST */
u_int64_t serial;
char *key_id;
u_int nprincipals;
char **principals;
u_int64_t valid_after, valid_before;
struct sshbuf *critical;
struct sshbuf *extensions;
struct sshkey *signature_key;
};
/* XXX opaquify? */
struct sshkey {
int type;
int flags;
RSA *rsa;
DSA *dsa;
int ecdsa_nid; /* NID of curve */
EC_KEY *ecdsa;
struct sshkey_cert *cert;
};
struct sshkey *sshkey_new(int);
int sshkey_add_private(struct sshkey *);
struct sshkey *sshkey_new_private(int);
void sshkey_free(struct sshkey *);
int sshkey_demote(const struct sshkey *, struct sshkey **);
int sshkey_equal_public(const struct sshkey *,
const struct sshkey *);
int sshkey_equal(const struct sshkey *, const struct sshkey *);
char *sshkey_fingerprint(struct sshkey *,
enum sshkey_fp_type, enum sshkey_fp_rep);
u_char *sshkey_fingerprint_raw(struct sshkey *,
enum sshkey_fp_type, size_t *);
const char *sshkey_type(const struct sshkey *);
const char *sshkey_cert_type(const struct sshkey *);
int sshkey_write(const struct sshkey *, FILE *);
int sshkey_read(struct sshkey *, char **);
u_int sshkey_size(const struct sshkey *);
int sshkey_generate(int type, u_int bits, struct sshkey **keyp);
int sshkey_from_private(const struct sshkey *, struct sshkey **);
int sshkey_type_from_name(char *);
int sshkey_is_cert(const struct sshkey *);
int sshkey_type_plain(int);
int sshkey_to_certified(struct sshkey *, int);
int sshkey_drop_cert(struct sshkey *);
int sshkey_certify(struct sshkey *, struct sshkey *);
int sshkey_cert_copy(const struct sshkey *, struct sshkey *);
int sshkey_cert_check_authority(const struct sshkey *, int, int,
const char *,
const char **);
int sshkey_cert_is_legacy(struct sshkey *);
int sshkey_ecdsa_nid_from_name(const char *);
int sshkey_curve_name_to_nid(const char *);
const char * sshkey_curve_nid_to_name(int);
u_int sshkey_curve_nid_to_bits(int);
int sshkey_ecdsa_bits_to_nid(int);
int sshkey_ecdsa_key_to_nid(EC_KEY *);
const EVP_MD * sshkey_ec_nid_to_evpmd(int nid);
int sshkey_ec_validate_public(const EC_GROUP *, const EC_POINT *);
int sshkey_ec_validate_private(const EC_KEY *);
int sshkey_from_blob(const u_char *, size_t, struct sshkey **);
int sshkey_to_blob_buf(const struct sshkey *, struct sshbuf *);
int sshkey_to_blob(const struct sshkey *, u_char **, size_t *);
const char *sshkey_ssh_name(const struct sshkey *);
const char *sshkey_ssh_name_plain(const struct sshkey *);
int sshkey_names_valid2(const char *);
int sshkey_sign(const struct sshkey *, u_char **, size_t *,
const u_char *, size_t, u_int);
int sshkey_verify(const struct sshkey *, const u_char *, size_t,
const u_char *, size_t, u_int);
/* for debug */
void sshkey_dump_ec_point(const EC_GROUP *, const EC_POINT *);
void sshkey_dump_ec_key(const EC_KEY *);
#ifdef SSHKEY_INTERNAL
int ssh_rsa_sign(const struct sshkey *key, u_char **sigp, size_t *lenp,
const u_char *data, size_t datalen, u_int compat);
int ssh_rsa_verify(const struct sshkey *key,
const u_char *signature, size_t signaturelen,
const u_char *data, size_t datalen, u_int compat);
int ssh_dss_sign(const struct sshkey *key, u_char **sigp, size_t *lenp,
const u_char *data, size_t datalen, u_int compat);
int ssh_dss_verify(const struct sshkey *key,
const u_char *signature, size_t signaturelen,
const u_char *data, size_t datalen, u_int compat);
int ssh_ecdsa_sign(const struct sshkey *key, u_char **sigp, size_t *lenp,
const u_char *data, size_t datalen, u_int compat);
int ssh_ecdsa_verify(const struct sshkey *key,
const u_char *signature, size_t signaturelen,
const u_char *data, size_t datalen, u_int compat);
#endif
#endif