libssh: libmbedcrypto.h Source File

libssh 0.10.6 The SSH library

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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
38typedef mbedtls_md_context_t *SHACTX;
39typedef mbedtls_md_context_t *SHA256CTX;
40typedef mbedtls_md_context_t *SHA384CTX;
41typedef mbedtls_md_context_t *SHA512CTX;
42typedef mbedtls_md_context_t *MD5CTX;
43typedef mbedtls_md_context_t *HMACCTX;
44
45#define SHA_DIGEST_LENGTH 20
46#define SHA_DIGEST_LEN SHA_DIGEST_LENGTH
47#define MD5_DIGEST_LEN 16
48#define SHA256_DIGEST_LENGTH 32
49#define SHA256_DIGEST_LEN SHA256_DIGEST_LENGTH
50#define SHA384_DIGEST_LENGTH 48
51#define SHA384_DIGEST_LEN SHA384_DIGEST_LENGTH
52#define SHA512_DIGEST_LENGTH 64
53#define SHA512_DIGEST_LEN SHA512_DIGEST_LENGTH
54
55#ifndef EVP_MAX_MD_SIZE
56#define EVP_MAX_MD_SIZE 64
57#endif
58
59#define EVP_DIGEST_LEN EVP_MAX_MD_SIZE
60
61typedef mbedtls_mpi *bignum;
62typedef const mbedtls_mpi *const_bignum;
63typedef void* bignum_CTX;
64
65/* Constants for curves */
66#define NID_mbedtls_nistp256 0
67#define NID_mbedtls_nistp384 1
68#define NID_mbedtls_nistp521 2
69
70struct mbedtls_ecdsa_sig {
71 bignum r;
72 bignum s;
73};
74
75#ifdef __cplusplus
76extern "C" {
77#endif
78
79bignum ssh_mbedcry_bn_new(void);
80void ssh_mbedcry_bn_free(bignum num);
81unsigned char *ssh_mbedcry_bn2num(const_bignum num, int radix);
82int ssh_mbedcry_rand(bignum rnd, int bits, int top, int bottom);
83int ssh_mbedcry_is_bit_set(bignum num, size_t pos);
84int ssh_mbedcry_rand_range(bignum dest, bignum max);
85int ssh_mbedcry_hex2bn(bignum *dest, char *data);
86
87#define bignum_new() ssh_mbedcry_bn_new()
88#define bignum_safe_free(num) do { \
89 if ((num) != NULL) { \
90 ssh_mbedcry_bn_free(num); \
91 (num)=NULL; \
92 } \
93 } while(0)
94#define bignum_ctx_new() NULL
95#define bignum_ctx_free(num) do {(num) = NULL;} while(0)
96#define bignum_ctx_invalid(ctx) (ctx == NULL?0:1)
97#define bignum_set_word(bn, n) (mbedtls_mpi_lset(bn, n)==0?1:0) /* TODO fix
98 overflow/underflow */
99#define bignum_bin2bn(data, datalen, bn) do { \
100 *(bn) = bignum_new(); \
101 if (*(bn) != NULL) { \
102 mbedtls_mpi_read_binary(*(bn), data, datalen); \
103 } \
104 } while(0)
105#define bignum_bn2dec(num) ssh_mbedcry_bn2num(num, 10)
106#define bignum_dec2bn(data, bn) mbedtls_mpi_read_string(bn, 10, data)
107#define bignum_bn2hex(num, dest) (*dest)=ssh_mbedcry_bn2num(num, 16)
108#define bignum_hex2bn(data, dest) ssh_mbedcry_hex2bn(dest, data)
109#define bignum_rand(rnd, bits) ssh_mbedcry_rand((rnd), (bits), 0, 1)
110#define bignum_rand_range(rnd, max) ssh_mbedcry_rand_range(rnd, max)
111#define bignum_mod_exp(dest, generator, exp, modulo, ctx) \
112 (mbedtls_mpi_exp_mod(dest, generator, exp, modulo, NULL)==0?1:0)
113#define bignum_add(dest, a, b) mbedtls_mpi_add_mpi(dest, a, b)
114#define bignum_sub(dest, a, b) mbedtls_mpi_sub_mpi(dest, a, b)
115#define bignum_mod(dest, a, b, ctx) \
116 (mbedtls_mpi_mod_mpi(dest, a, b) == 0 ? 1 : 0)
117#define bignum_num_bytes(num) mbedtls_mpi_size(num)
118#define bignum_num_bits(num) mbedtls_mpi_bitlen(num)
119#define bignum_is_bit_set(num, bit) ssh_mbedcry_is_bit_set(num, bit)
120#define bignum_bn2bin(num, len, ptr) mbedtls_mpi_write_binary(num, ptr, \
121 mbedtls_mpi_size(num))
122#define bignum_cmp(num1, num2) mbedtls_mpi_cmp_mpi(num1, num2)
123#define bignum_rshift1(dest, src) mbedtls_mpi_copy(dest, src), mbedtls_mpi_shift_r(dest, 1)
124#define bignum_dup(orig, dest) do { \
125 if (*(dest) == NULL) { \
126 *(dest) = bignum_new(); \
127 } \
128 if (*(dest) != NULL) { \
129 mbedtls_mpi_copy(orig, *(dest)); \
130 } \
131 } while(0)
132
133mbedtls_ctr_drbg_context *ssh_get_mbedtls_ctr_drbg_context(void);
134
135int ssh_mbedtls_random(void *where, int len, int strong);
136
137 ssh_string make_ecpoint_string(const mbedtls_ecp_group *g, const
138 mbedtls_ecp_point *p);
139
140#define ssh_fips_mode() false
141
142#ifdef __cplusplus
143}
144#endif
145
146#endif /* HAVE_LIBMBEDCRYPTO */
147#endif /* LIBMBEDCRYPTO_H_ */
ssh_string_struct
Definition string.h:33