libssh  0.9.3
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 enum ssh_kdf_digest {
33  SSH_KDF_SHA1=1,
34  SSH_KDF_SHA256,
35  SSH_KDF_SHA384,
36  SSH_KDF_SHA512
37 };
38 
39 enum ssh_hmac_e {
40  SSH_HMAC_SHA1 = 1,
41  SSH_HMAC_SHA256,
42  SSH_HMAC_SHA512,
43  SSH_HMAC_MD5,
44  SSH_HMAC_AEAD_POLY1305,
45  SSH_HMAC_AEAD_GCM
46 };
47 
48 enum ssh_des_e {
49  SSH_3DES,
50  SSH_DES
51 };
52 
54  const char* name;
55  enum ssh_hmac_e hmac_type;
56  bool etm;
57 };
58 
59 enum ssh_crypto_direction_e {
60  SSH_DIRECTION_IN = 1,
61  SSH_DIRECTION_OUT = 2,
62  SSH_DIRECTION_BOTH = 3,
63 };
64 
65 struct ssh_cipher_struct;
66 struct ssh_crypto_struct;
67 
68 typedef struct ssh_mac_ctx_struct *ssh_mac_ctx;
69 MD5CTX md5_init(void);
70 void md5_ctx_free(MD5CTX);
71 int md5_update(MD5CTX c, const void *data, unsigned long len);
72 int md5_final(unsigned char *md,MD5CTX c);
73 
74 SHACTX sha1_init(void);
75 void sha1_ctx_free(SHACTX);
76 int sha1_update(SHACTX c, const void *data, unsigned long len);
77 int sha1_final(unsigned char *md,SHACTX c);
78 int sha1(const unsigned char *digest,int len,unsigned char *hash);
79 
80 SHA256CTX sha256_init(void);
81 void sha256_ctx_free(SHA256CTX);
82 int sha256_update(SHA256CTX c, const void *data, unsigned long len);
83 int sha256_final(unsigned char *md,SHA256CTX c);
84 int sha256(const unsigned char *digest, int len, unsigned char *hash);
85 
86 SHA384CTX sha384_init(void);
87 void sha384_ctx_free(SHA384CTX);
88 int sha384_update(SHA384CTX c, const void *data, unsigned long len);
89 int sha384_final(unsigned char *md,SHA384CTX c);
90 int sha384(const unsigned char *digest, int len, unsigned char *hash);
91 
92 SHA512CTX sha512_init(void);
93 void sha512_ctx_free(SHA512CTX);
94 int sha512_update(SHA512CTX c, const void *data, unsigned long len);
95 int sha512_final(unsigned char *md,SHA512CTX c);
96 int sha512(const unsigned char *digest, int len, unsigned char *hash);
97 
98 HMACCTX hmac_init(const void *key,int len, enum ssh_hmac_e type);
99 void hmac_update(HMACCTX c, const void *data, unsigned long len);
100 void hmac_final(HMACCTX ctx,unsigned char *hashmacbuf,unsigned int *len);
101 
102 size_t hmac_digest_len(enum ssh_hmac_e type);
103 
104 int ssh_kdf(struct ssh_crypto_struct *crypto,
105  unsigned char *key, size_t key_len,
106  int key_type, unsigned char *output,
107  size_t requested_len);
108 
109 int crypt_set_algorithms_client(ssh_session session);
110 int crypt_set_algorithms_server(ssh_session session);
111 struct ssh_crypto_struct *crypto_new(void);
112 void crypto_free(struct ssh_crypto_struct *crypto);
113 
114 void ssh_reseed(void);
115 int ssh_crypto_init(void);
116 void ssh_crypto_finalize(void);
117 
118 void ssh_cipher_clear(struct ssh_cipher_struct *cipher);
119 struct ssh_hmac_struct *ssh_get_hmactab(void);
120 struct ssh_cipher_struct *ssh_get_ciphertab(void);
121 const char *ssh_hmac_type_to_string(enum ssh_hmac_e hmac_type, bool etm);
122 
123 #endif /* WRAPPER_H_ */
ssh_mac_ctx_struct
Definition: kdf.c:43
ssh_hmac_struct
Definition: wrapper.h:53
ssh_crypto_struct
Definition: crypto.h:104
ssh_cipher_struct
Definition: crypto.h:158
ssh_session_struct
Definition: session.h:120