libssh  0.10.6
The SSH library
wrapper.h
1 /*
2  * This file is part of the SSH Library
3  *
4  * Copyright (c) 2009 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 WRAPPER_H_
22 #define WRAPPER_H_
23 
24 #include <stdbool.h>
25 
26 #include "config.h"
27 #include "libssh/libssh.h"
28 #include "libssh/libcrypto.h"
29 #include "libssh/libgcrypt.h"
30 #include "libssh/libmbedcrypto.h"
31 
32 #ifdef __cplusplus
33 extern "C" {
34 #endif
35 
36 enum ssh_kdf_digest {
37  SSH_KDF_SHA1=1,
38  SSH_KDF_SHA256,
39  SSH_KDF_SHA384,
40  SSH_KDF_SHA512
41 };
42 
43 enum ssh_hmac_e {
44  SSH_HMAC_SHA1 = 1,
45  SSH_HMAC_SHA256,
46  SSH_HMAC_SHA512,
47  SSH_HMAC_MD5,
48  SSH_HMAC_AEAD_POLY1305,
49  SSH_HMAC_AEAD_GCM,
50  SSH_HMAC_NONE,
51 };
52 
53 enum ssh_des_e {
54  SSH_3DES,
55  SSH_DES
56 };
57 
59  const char* name;
60  enum ssh_hmac_e hmac_type;
61  bool etm;
62 };
63 
64 enum ssh_crypto_direction_e {
65  SSH_DIRECTION_IN = 1,
66  SSH_DIRECTION_OUT = 2,
67  SSH_DIRECTION_BOTH = 3,
68 };
69 
70 struct ssh_cipher_struct;
71 struct ssh_crypto_struct;
72 
73 typedef struct ssh_mac_ctx_struct *ssh_mac_ctx;
74 MD5CTX md5_init(void);
75 void md5_ctx_free(MD5CTX);
76 int md5_update(MD5CTX c, const void *data, size_t len);
77 int md5_final(unsigned char *md, MD5CTX c);
78 
79 SHACTX sha1_init(void);
80 void sha1_ctx_free(SHACTX);
81 int sha1_update(SHACTX c, const void *data, size_t len);
82 int sha1_final(unsigned char *md,SHACTX c);
83 int sha1(const unsigned char *digest,size_t len, unsigned char *hash);
84 
85 SHA256CTX sha256_init(void);
86 void sha256_ctx_free(SHA256CTX);
87 int sha256_update(SHA256CTX c, const void *data, size_t len);
88 int sha256_final(unsigned char *md,SHA256CTX c);
89 int sha256(const unsigned char *digest, size_t len, unsigned char *hash);
90 
91 SHA384CTX sha384_init(void);
92 void sha384_ctx_free(SHA384CTX);
93 int sha384_update(SHA384CTX c, const void *data, size_t len);
94 int sha384_final(unsigned char *md,SHA384CTX c);
95 int sha384(const unsigned char *digest, size_t len, unsigned char *hash);
96 
97 SHA512CTX sha512_init(void);
98 void sha512_ctx_free(SHA512CTX);
99 int sha512_update(SHA512CTX c, const void *data, size_t len);
100 int sha512_final(unsigned char *md,SHA512CTX c);
101 int sha512(const unsigned char *digest, size_t len, unsigned char *hash);
102 
103 HMACCTX hmac_init(const void *key,size_t len, enum ssh_hmac_e type);
104 int hmac_update(HMACCTX c, const void *data, size_t len);
105 int hmac_final(HMACCTX ctx, unsigned char *hashmacbuf, size_t *len);
106 size_t hmac_digest_len(enum ssh_hmac_e type);
107 
108 int ssh_kdf(struct ssh_crypto_struct *crypto,
109  unsigned char *key, size_t key_len,
110  uint8_t key_type, unsigned char *output,
111  size_t requested_len);
112 
113 int crypt_set_algorithms_client(ssh_session session);
114 int crypt_set_algorithms_server(ssh_session session);
115 struct ssh_crypto_struct *crypto_new(void);
116 void crypto_free(struct ssh_crypto_struct *crypto);
117 
118 void ssh_reseed(void);
119 int ssh_crypto_init(void);
120 void ssh_crypto_finalize(void);
121 
122 void ssh_cipher_clear(struct ssh_cipher_struct *cipher);
123 struct ssh_hmac_struct *ssh_get_hmactab(void);
124 struct ssh_cipher_struct *ssh_get_ciphertab(void);
125 const char *ssh_hmac_type_to_string(enum ssh_hmac_e hmac_type, bool etm);
126 
127 #if defined(HAVE_LIBCRYPTO) && OPENSSL_VERSION_NUMBER >= 0x30000000L
128 int evp_build_pkey(const char* name, OSSL_PARAM_BLD *param_bld, EVP_PKEY **pkey, int selection);
129 int evp_dup_dsa_pkey(const ssh_key key, ssh_key new_key, int demote);
130 int evp_dup_rsa_pkey(const ssh_key key, ssh_key new_key, int demote);
131 int evp_dup_ecdsa_pkey(const ssh_key key, ssh_key new_key, int demote);
132 #endif /* HAVE_LIBCRYPTO && OPENSSL_VERSION_NUMBER */
133 
134 #ifdef __cplusplus
135 }
136 #endif
137 
138 #endif /* WRAPPER_H_ */
Definition: crypto.h:168
Definition: crypto.h:106
Definition: wrapper.h:58
Definition: pki.h:54
Definition: kdf.c:43
Definition: session.h:127