1/* $OpenBSD: key.h,v 1.35 2013/01/17 23:00:01 djm Exp $ */ 2 3/* 4 * Copyright (c) 2000, 2001 Markus Friedl. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26#ifndef KEY_H 27#define KEY_H 28 29#include "buffer.h" 30 31#ifdef __APPLE_CRYPTO__ 32#include "ossl-rsa.h" 33#include "ossl-dsa.h" 34#else 35#include <openssl/rsa.h> 36#include <openssl/dsa.h> 37#ifdef OPENSSL_HAS_ECC 38#include <openssl/ec.h> 39#endif 40#endif /* __APPLE_CRYPTO__ */ 41 42typedef struct Key Key; 43enum types { 44 KEY_RSA1, 45 KEY_RSA, 46 KEY_DSA, 47 KEY_ECDSA, 48 KEY_RSA_CERT, 49 KEY_DSA_CERT, 50 KEY_ECDSA_CERT, 51 KEY_RSA_CERT_V00, 52 KEY_DSA_CERT_V00, 53 KEY_NULL, 54 KEY_UNSPEC 55}; 56enum fp_type { 57 SSH_FP_SHA1, 58 SSH_FP_MD5, 59 SSH_FP_SHA256 60}; 61enum fp_rep { 62 SSH_FP_HEX, 63 SSH_FP_BUBBLEBABBLE, 64 SSH_FP_RANDOMART 65}; 66 67/* key is stored in external hardware */ 68#define KEY_FLAG_EXT 0x0001 69 70#define CERT_MAX_PRINCIPALS 256 71struct KeyCert { 72 Buffer certblob; /* Kept around for use on wire */ 73 u_int type; /* SSH2_CERT_TYPE_USER or SSH2_CERT_TYPE_HOST */ 74 u_int64_t serial; 75 char *key_id; 76 u_int nprincipals; 77 char **principals; 78 u_int64_t valid_after, valid_before; 79 Buffer critical; 80 Buffer extensions; 81 Key *signature_key; 82}; 83 84struct Key { 85 int type; 86 int flags; 87 RSA *rsa; 88 DSA *dsa; 89 int ecdsa_nid; /* NID of curve */ 90#ifdef OPENSSL_HAS_ECC 91 EC_KEY *ecdsa; 92#else 93 void *ecdsa; 94#endif 95 struct KeyCert *cert; 96}; 97 98Key *key_new(int); 99void key_add_private(Key *); 100Key *key_new_private(int); 101void key_free(Key *); 102Key *key_demote(const Key *); 103int key_equal_public(const Key *, const Key *); 104int key_equal(const Key *, const Key *); 105char *key_fingerprint(Key *, enum fp_type, enum fp_rep); 106u_char *key_fingerprint_raw(const Key *, enum fp_type, u_int *); 107const char *key_type(const Key *); 108const char *key_cert_type(const Key *); 109int key_write(const Key *, FILE *); 110int key_read(Key *, char **); 111u_int key_size(const Key *); 112 113Key *key_generate(int, u_int); 114Key *key_from_private(const Key *); 115int key_type_from_name(char *); 116int key_is_cert(const Key *); 117int key_type_plain(int); 118int key_to_certified(Key *, int); 119int key_drop_cert(Key *); 120int key_certify(Key *, Key *); 121void key_cert_copy(const Key *, struct Key *); 122int key_cert_check_authority(const Key *, int, int, const char *, 123 const char **); 124int key_cert_is_legacy(const Key *); 125 126int key_ecdsa_nid_from_name(const char *); 127int key_curve_name_to_nid(const char *); 128const char * key_curve_nid_to_name(int); 129u_int key_curve_nid_to_bits(int); 130int key_ecdsa_bits_to_nid(int); 131#ifdef OPENSSL_HAS_ECC 132int key_ecdsa_key_to_nid(EC_KEY *); 133const EVP_MD * key_ec_nid_to_evpmd(int nid); 134int key_ec_validate_public(const EC_GROUP *, const EC_POINT *); 135int key_ec_validate_private(const EC_KEY *); 136#endif 137 138Key *key_from_blob(const u_char *, u_int); 139int key_to_blob(const Key *, u_char **, u_int *); 140const char *key_ssh_name(const Key *); 141const char *key_ssh_name_plain(const Key *); 142int key_names_valid2(const char *); 143 144int key_sign(const Key *, u_char **, u_int *, const u_char *, u_int); 145int key_verify(const Key *, const u_char *, u_int, const u_char *, u_int); 146 147int ssh_dss_sign(const Key *, u_char **, u_int *, const u_char *, u_int); 148int ssh_dss_verify(const Key *, const u_char *, u_int, const u_char *, u_int); 149int ssh_ecdsa_sign(const Key *, u_char **, u_int *, const u_char *, u_int); 150int ssh_ecdsa_verify(const Key *, const u_char *, u_int, const u_char *, u_int); 151int ssh_rsa_sign(const Key *, u_char **, u_int *, const u_char *, u_int); 152int ssh_rsa_verify(const Key *, const u_char *, u_int, const u_char *, u_int); 153 154#if defined(OPENSSL_HAS_ECC) && (defined(DEBUG_KEXECDH) || defined(DEBUG_PK)) 155void key_dump_ec_point(const EC_GROUP *, const EC_POINT *); 156void key_dump_ec_key(const EC_KEY *); 157#endif 158 159#endif 160