libssh 0.9.5 The SSH library

libmbedcrypto.h
1/*
2 * This file is part of the SSH Library
3 *
4 * Copyright (c) 2017 Sartura d.o.o.
5 *
6 * Author: Juraj Vijtiuk <juraj.vijtiuk@sartura.hr>
7 *
8 * The SSH Library is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU Lesser General Public License as published by
10 * the Free Software Foundation; either version 2.1 of the License, or (at your
11 * option) any later version.
12 *
13 * The SSH Library is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
16 * License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public License
19 * along with the SSH Library; see the file COPYING. If not, write to
20 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
21 * MA 02111-1307, USA.
22 */
23
24#ifndef LIBMBEDCRYPTO_H_
25#define LIBMBEDCRYPTO_H_
26
27#include "config.h"
28
29#ifdef HAVE_LIBMBEDCRYPTO
30
31#include <mbedtls/md.h>
32#include <mbedtls/bignum.h>
33#include <mbedtls/pk.h>
34#include <mbedtls/cipher.h>
35#include <mbedtls/entropy.h>
36#include <mbedtls/ctr_drbg.h>
37
38 typedef mbedtls_md_context_t *SHACTX;
39 typedef mbedtls_md_context_t *SHA256CTX;
40 typedef mbedtls_md_context_t *SHA384CTX;
41 typedef mbedtls_md_context_t *SHA512CTX;
42 typedef mbedtls_md_context_t *MD5CTX;
43 typedef mbedtls_md_context_t *HMACCTX;
44 typedef mbedtls_md_context_t *EVPCTX;
45
46#define SHA_DIGEST_LENGTH 20
47#define SHA_DIGEST_LEN SHA_DIGEST_LENGTH
48#define MD5_DIGEST_LEN 16
49#define SHA256_DIGEST_LENGTH 32
50#define SHA256_DIGEST_LEN SHA256_DIGEST_LENGTH
51#define SHA384_DIGEST_LENGTH 48
52#define SHA384_DIGEST_LEN SHA384_DIGEST_LENGTH
53#define SHA512_DIGEST_LENGTH 64
54#define SHA512_DIGEST_LEN SHA512_DIGEST_LENGTH
55
56#ifndef EVP_MAX_MD_SIZE
57#define EVP_MAX_MD_SIZE 64
58#endif
59
60#define EVP_DIGEST_LEN EVP_MAX_MD_SIZE
61
62 typedef mbedtls_mpi *bignum;
63 typedef const mbedtls_mpi *const_bignum;
64 typedef void* bignum_CTX;
65
66/* Constants for curves */
67#define NID_mbedtls_nistp256 0
68#define NID_mbedtls_nistp384 1
69#define NID_mbedtls_nistp521 2
70
71 struct mbedtls_ecdsa_sig {
72 bignum r;
73 bignum s;
74};
75
76bignum ssh_mbedcry_bn_new(void);
77 void ssh_mbedcry_bn_free(bignum num);
78 unsigned char *ssh_mbedcry_bn2num(const_bignum num, int radix);
79 int ssh_mbedcry_rand(bignum rnd, int bits, int top, int bottom);
80 int ssh_mbedcry_is_bit_set(bignum num, size_t pos);
81 int ssh_mbedcry_rand_range(bignum dest, bignum max);
82 int ssh_mbedcry_hex2bn(bignum *dest, char *data);
83
84#define bignum_new() ssh_mbedcry_bn_new()
85#define bignum_safe_free(num) do { \
86 if ((num) != NULL) { \
87 ssh_mbedcry_bn_free(num); \
88 (num)=NULL; \
89 } \
90 } while(0)
91#define bignum_ctx_new() NULL
92#define bignum_ctx_free(num) do {(num) = NULL;} while(0)
93#define bignum_ctx_invalid(ctx) (ctx == NULL?0:1)
94#define bignum_set_word(bn, n) (mbedtls_mpi_lset(bn, n)==0?1:0) /* TODO fix
95 overflow/underflow */
96#define bignum_bin2bn(data, datalen, bn) do { \
97 *(bn) = bignum_new(); \
98 if (*(bn) != NULL) { \
99 mbedtls_mpi_read_binary(*(bn), data, datalen); \
100 } \
101 } while(0)
102#define bignum_bn2dec(num) ssh_mbedcry_bn2num(num, 10)
103#define bignum_dec2bn(data, bn) mbedtls_mpi_read_string(bn, 10, data)
104#define bignum_bn2hex(num, dest) (*dest)=ssh_mbedcry_bn2num(num, 16)
105#define bignum_hex2bn(data, dest) ssh_mbedcry_hex2bn(dest, data)
106#define bignum_rand(rnd, bits) ssh_mbedcry_rand((rnd), (bits), 0, 1)
107#define bignum_rand_range(rnd, max) ssh_mbedcry_rand_range(rnd, max)
108#define bignum_mod_exp(dest, generator, exp, modulo, ctx) \
109 (mbedtls_mpi_exp_mod(dest, generator, exp, modulo, NULL)==0?1:0)
110#define bignum_add(dest, a, b) mbedtls_mpi_add_mpi(dest, a, b)
111#define bignum_sub(dest, a, b) mbedtls_mpi_sub_mpi(dest, a, b)
112#define bignum_mod(dest, a, b, ctx) \
113 (mbedtls_mpi_mod_mpi(dest, a, b) == 0 ? 1 : 0)
114#define bignum_num_bytes(num) mbedtls_mpi_size(num)
115#define bignum_num_bits(num) mbedtls_mpi_bitlen(num)
116#define bignum_is_bit_set(num, bit) ssh_mbedcry_is_bit_set(num, bit)
117#define bignum_bn2bin(num, len, ptr) mbedtls_mpi_write_binary(num, ptr, \
118 mbedtls_mpi_size(num))
119#define bignum_cmp(num1, num2) mbedtls_mpi_cmp_mpi(num1, num2)
120#define bignum_rshift1(dest, src) mbedtls_mpi_copy(dest, src), mbedtls_mpi_shift_r(dest, 1)
121#define bignum_dup(orig, dest) do { \
122 if (*(dest) == NULL) { \
123 *(dest) = bignum_new(); \
124 } \
125 if (*(dest) != NULL) { \
126 mbedtls_mpi_copy(orig, *(dest)); \
127 } \
128 } while(0)
129
130mbedtls_ctr_drbg_context *ssh_get_mbedtls_ctr_drbg_context(void);
131
132 int ssh_mbedtls_random(void *where, int len, int strong);
133
134 ssh_string make_ecpoint_string(const mbedtls_ecp_group *g, const
135 mbedtls_ecp_point *p);
136
137#define ssh_fips_mode() false
138
139#endif /* HAVE_LIBMBEDCRYPTO */
140#endif /* LIBMBEDCRYPTO_H_ */
ssh_string_struct
Definition: string.h:29