libssh: wrapper.h Source File

libssh 0.11.1 The SSH library

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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
33extern "C" {
34#endif
35
36enum ssh_kdf_digest {
37 SSH_KDF_SHA1=1,
38 SSH_KDF_SHA256,
39 SSH_KDF_SHA384,
40 SSH_KDF_SHA512
41};
42
43enum 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
53enum ssh_des_e {
54 SSH_3DES,
55 SSH_DES
56};
57
58struct ssh_hmac_struct {
59 const char* name;
60 enum ssh_hmac_e hmac_type;
61 bool etm;
62};
63
64enum ssh_crypto_direction_e {
65 SSH_DIRECTION_IN = 1,
66 SSH_DIRECTION_OUT = 2,
67 SSH_DIRECTION_BOTH = 3,
68};
69
70struct ssh_cipher_struct;
71struct ssh_crypto_struct;
72
73typedef struct ssh_mac_ctx_struct *ssh_mac_ctx;
74MD5CTX md5_init(void);
75void md5_ctx_free(MD5CTX);
76int md5_update(MD5CTX c, const void *data, size_t len);
77int md5_final(unsigned char *md, MD5CTX c);
78
79SHACTX sha1_init(void);
80void sha1_ctx_free(SHACTX);
81int sha1_update(SHACTX c, const void *data, size_t len);
82int sha1_final(unsigned char *md,SHACTX c);
83int sha1(const unsigned char *digest,size_t len, unsigned char *hash);
84
85SHA256CTX sha256_init(void);
86void sha256_ctx_free(SHA256CTX);
87int sha256_update(SHA256CTX c, const void *data, size_t len);
88int sha256_final(unsigned char *md,SHA256CTX c);
89int sha256(const unsigned char *digest, size_t len, unsigned char *hash);
90
91SHA384CTX sha384_init(void);
92void sha384_ctx_free(SHA384CTX);
93int sha384_update(SHA384CTX c, const void *data, size_t len);
94int sha384_final(unsigned char *md,SHA384CTX c);
95int sha384(const unsigned char *digest, size_t len, unsigned char *hash);
96
97SHA512CTX sha512_init(void);
98void sha512_ctx_free(SHA512CTX);
99int sha512_update(SHA512CTX c, const void *data, size_t len);
100int sha512_final(unsigned char *md,SHA512CTX c);
101int sha512(const unsigned char *digest, size_t len, unsigned char *hash);
102
103HMACCTX hmac_init(const void *key,size_t len, enum ssh_hmac_e type);
104int hmac_update(HMACCTX c, const void *data, size_t len);
105int hmac_final(HMACCTX ctx, unsigned char *hashmacbuf, size_t *len);
106size_t hmac_digest_len(enum ssh_hmac_e type);
107
108int 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
113int crypt_set_algorithms_client(ssh_session session);
114int crypt_set_algorithms_server(ssh_session session);
115struct ssh_crypto_struct *crypto_new(void);
116void crypto_free(struct ssh_crypto_struct *crypto);
117
118void ssh_reseed(void);
119int ssh_crypto_init(void);
120void ssh_crypto_finalize(void);
121
122void ssh_cipher_clear(struct ssh_cipher_struct *cipher);
123struct ssh_hmac_struct *ssh_get_hmactab(void);
124struct ssh_cipher_struct *ssh_get_ciphertab(void);
125const char *ssh_hmac_type_to_string(enum ssh_hmac_e hmac_type, bool etm);
126
127#if defined(HAVE_LIBCRYPTO) && OPENSSL_VERSION_NUMBER >= 0x30000000L
128int evp_build_pkey(const char* name, OSSL_PARAM_BLD *param_bld, EVP_PKEY **pkey, int selection);
129int evp_dup_dsa_pkey(const ssh_key key, ssh_key new_key, int demote);
130int evp_dup_rsa_pkey(const ssh_key key, ssh_key new_key, int demote);
131int 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_ */