libssh  0.8.2
The SSH library
pki.h
1 /*
2  * This file is part of the SSH Library
3  *
4  * Copyright (c) 2010 by Aris Adamantiadis
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #ifndef PKI_H_
22 #define PKI_H_
23 
24 #include "libssh/priv.h"
25 #ifdef HAVE_OPENSSL_EC_H
26 #include <openssl/ec.h>
27 #endif
28 #ifdef HAVE_OPENSSL_ECDSA_H
29 #include <openssl/ecdsa.h>
30 #endif
31 
32 #include "libssh/crypto.h"
33 #include "libssh/ed25519.h"
34 
35 #define MAX_PUBKEY_SIZE 0x100000 /* 1M */
36 #define MAX_PRIVKEY_SIZE 0x400000 /* 4M */
37 
38 #define SSH_KEY_FLAG_EMPTY 0x0
39 #define SSH_KEY_FLAG_PUBLIC 0x0001
40 #define SSH_KEY_FLAG_PRIVATE 0x0002
41 
43  enum ssh_keytypes_e type;
44  int flags;
45  const char *type_c; /* Don't free it ! it is static */
46  int ecdsa_nid;
47 #ifdef HAVE_LIBGCRYPT
48  gcry_sexp_t dsa;
49  gcry_sexp_t rsa;
50  gcry_sexp_t ecdsa;
51 #elif HAVE_LIBMBEDCRYPTO
52  mbedtls_pk_context *rsa;
53  mbedtls_ecdsa_context *ecdsa;
54  void *dsa;
55 #elif HAVE_LIBCRYPTO
56  DSA *dsa;
57  RSA *rsa;
58 #ifdef HAVE_OPENSSL_ECC
59  EC_KEY *ecdsa;
60 #else
61  void *ecdsa;
62 #endif /* HAVE_OPENSSL_EC_H */
63 #endif
64  ed25519_pubkey *ed25519_pubkey;
65  ed25519_privkey *ed25519_privkey;
66  void *cert;
67  enum ssh_keytypes_e cert_type;
68 };
69 
71  enum ssh_keytypes_e type;
72  const char *type_c;
73 #ifdef HAVE_LIBGCRYPT
74  gcry_sexp_t dsa_sig;
75  gcry_sexp_t rsa_sig;
76  gcry_sexp_t ecdsa_sig;
77 #elif defined HAVE_LIBCRYPTO
78  DSA_SIG *dsa_sig;
79  ssh_string rsa_sig;
80 # ifdef HAVE_OPENSSL_ECC
81  ECDSA_SIG *ecdsa_sig;
82 # else
83  void *ecdsa_sig;
84 # endif
85 #elif defined HAVE_LIBMBEDCRYPTO
86  ssh_string rsa_sig;
87  struct mbedtls_ecdsa_sig ecdsa_sig;
88 #endif
89  ed25519_signature *ed25519_sig;
90 };
91 
92 typedef struct ssh_signature_struct *ssh_signature;
93 
94 /* SSH Key Functions */
95 ssh_key ssh_key_dup(const ssh_key key);
96 void ssh_key_clean (ssh_key key);
97 
98 /* SSH Signature Functions */
99 ssh_signature ssh_signature_new(void);
100 void ssh_signature_free(ssh_signature sign);
101 
102 int ssh_pki_export_signature_blob(const ssh_signature sign,
103  ssh_string *sign_blob);
104 int ssh_pki_import_signature_blob(const ssh_string sig_blob,
105  const ssh_key pubkey,
106  ssh_signature *psig);
107 int ssh_pki_signature_verify_blob(ssh_session session,
108  ssh_string sig_blob,
109  const ssh_key key,
110  unsigned char *digest,
111  size_t dlen);
112 
113 /* SSH Public Key Functions */
114 int ssh_pki_export_pubkey_blob(const ssh_key key,
115  ssh_string *pblob);
116 int ssh_pki_import_pubkey_blob(const ssh_string key_blob,
117  ssh_key *pkey);
118 
119 int ssh_pki_import_cert_blob(const ssh_string cert_blob,
120  ssh_key *pkey);
121 
122 
123 /* SSH Signing Functions */
124 ssh_string ssh_pki_do_sign(ssh_session session, ssh_buffer sigbuf,
125  const ssh_key privatekey);
126 ssh_string ssh_pki_do_sign_agent(ssh_session session,
127  struct ssh_buffer_struct *buf,
128  const ssh_key pubkey);
129 ssh_string ssh_srv_pki_do_sign_sessionid(ssh_session session,
130  const ssh_key privkey);
131 
132 /* Temporary functions, to be removed after migration to ssh_key */
133 ssh_public_key ssh_pki_convert_key_to_publickey(const ssh_key key);
134 ssh_private_key ssh_pki_convert_key_to_privatekey(const ssh_key key);
135 
136 #endif /* PKI_H_ */
Definition: pki.h:42
Definition: session.h:96
Definition: keys.h:28
Definition: string.h:29
void ssh_key_clean(ssh_key key)
clean up the key and deallocate all existing keys
Definition: pki.c:128
Definition: pki.h:70
Definition: keys.h:43
Definition: buffer.h:34