PolarSSL v1.3.8
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Diffie-Hellman-Merkle key exchange. More...
#include "bignum.h"
Go to the source code of this file.
Data Structures | |
struct | dhm_context |
DHM context structure. More... | |
Macros | |
#define | POLARSSL_ERR_DHM_BAD_INPUT_DATA -0x3080 |
Bad input parameters to function. | |
#define | POLARSSL_ERR_DHM_READ_PARAMS_FAILED -0x3100 |
Reading of the DHM parameters failed. | |
#define | POLARSSL_ERR_DHM_MAKE_PARAMS_FAILED -0x3180 |
Making of the DHM parameters failed. | |
#define | POLARSSL_ERR_DHM_READ_PUBLIC_FAILED -0x3200 |
Reading of the public values failed. | |
#define | POLARSSL_ERR_DHM_MAKE_PUBLIC_FAILED -0x3280 |
Making of the public value failed. | |
#define | POLARSSL_ERR_DHM_CALC_SECRET_FAILED -0x3300 |
Calculation of the DHM secret failed. | |
#define | POLARSSL_ERR_DHM_INVALID_FORMAT -0x3380 |
The ASN.1 data is not formatted correctly. | |
#define | POLARSSL_ERR_DHM_MALLOC_FAILED -0x3400 |
Allocation of memory failed. | |
#define | POLARSSL_ERR_DHM_FILE_IO_ERROR -0x3480 |
Read/write of file failed. | |
#define | POLARSSL_DHM_RFC2409_MODP_1024_P |
RFC 2409 defines a number of standardized Diffie-Hellman groups that can be used. | |
#define | POLARSSL_DHM_RFC2409_MODP_1024_G "02" |
#define | POLARSSL_DHM_RFC3526_MODP_2048_P |
#define | POLARSSL_DHM_RFC3526_MODP_2048_G "02" |
#define | POLARSSL_DHM_RFC3526_MODP_3072_P |
#define | POLARSSL_DHM_RFC3526_MODP_3072_G "02" |
#define | POLARSSL_DHM_RFC5114_MODP_1024_P |
#define | POLARSSL_DHM_RFC5114_MODP_1024_G |
#define | POLARSSL_DHM_RFC5114_MODP_2048_P |
#define | POLARSSL_DHM_RFC5114_MODP_2048_G |
Functions | |
void | dhm_init (dhm_context *ctx) |
Initialize DHM context. | |
int | dhm_read_params (dhm_context *ctx, unsigned char **p, const unsigned char *end) |
Parse the ServerKeyExchange parameters. | |
int | dhm_make_params (dhm_context *ctx, int x_size, unsigned char *output, size_t *olen, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng) |
Setup and write the ServerKeyExchange parameters. | |
int | dhm_read_public (dhm_context *ctx, const unsigned char *input, size_t ilen) |
Import the peer's public value G^Y. | |
int | dhm_make_public (dhm_context *ctx, int x_size, unsigned char *output, size_t olen, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng) |
Create own private value X and export G^X. | |
int | dhm_calc_secret (dhm_context *ctx, unsigned char *output, size_t *olen, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng) |
Derive and export the shared secret (G^Y)^X mod P. | |
void | dhm_free (dhm_context *ctx) |
Free and clear the components of a DHM key. | |
int | dhm_parse_dhm (dhm_context *dhm, const unsigned char *dhmin, size_t dhminlen) |
Parse DHM parameters. | |
int | dhm_parse_dhmfile (dhm_context *dhm, const char *path) |
Load and parse DHM parameters. | |
int | dhm_self_test (int verbose) |
Checkup routine. | |
Diffie-Hellman-Merkle key exchange.
Copyright (C) 2006-2013, Brainspark B.V.
This file is part of PolarSSL (http://www.polarssl.org) Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
All rights reserved.
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Definition in file dhm.h.
#define POLARSSL_DHM_RFC2409_MODP_1024_P |
RFC 2409 defines a number of standardized Diffie-Hellman groups that can be used.
RFC 3526 defines a number of standardized Diffie-Hellman groups for IKE. RFC 5114 defines a number of standardized Diffie-Hellman groups that can be used.
Some are included here for convenience.
Included are: RFC 2409 6.2. 1024-bit MODP Group (Second Oakley Group) RFC 3526 3. 2048-bit MODP Group RFC 3526 4. 3072-bit MODP Group RFC 5114 2.1. 1024-bit MODP Group with 160-bit Prime Order Subgroup RFC 5114 2.2. 2048-bit MODP Group with 224-bit Prime Order Subgroup
#define POLARSSL_DHM_RFC3526_MODP_2048_P |
#define POLARSSL_DHM_RFC3526_MODP_3072_P |
#define POLARSSL_DHM_RFC5114_MODP_1024_G |
#define POLARSSL_DHM_RFC5114_MODP_1024_P |
#define POLARSSL_DHM_RFC5114_MODP_2048_G |
#define POLARSSL_DHM_RFC5114_MODP_2048_P |
#define POLARSSL_ERR_DHM_BAD_INPUT_DATA -0x3080 |
#define POLARSSL_ERR_DHM_CALC_SECRET_FAILED -0x3300 |
#define POLARSSL_ERR_DHM_FILE_IO_ERROR -0x3480 |
#define POLARSSL_ERR_DHM_INVALID_FORMAT -0x3380 |
#define POLARSSL_ERR_DHM_MAKE_PARAMS_FAILED -0x3180 |
#define POLARSSL_ERR_DHM_MAKE_PUBLIC_FAILED -0x3280 |
#define POLARSSL_ERR_DHM_MALLOC_FAILED -0x3400 |
#define POLARSSL_ERR_DHM_READ_PARAMS_FAILED -0x3100 |
#define POLARSSL_ERR_DHM_READ_PUBLIC_FAILED -0x3200 |
int dhm_calc_secret | ( | dhm_context * | ctx, |
unsigned char * | output, | ||
size_t * | olen, | ||
int(*)(void *, unsigned char *, size_t) | f_rng, | ||
void * | p_rng | ||
) |
Derive and export the shared secret (G^Y)^X mod P.
ctx | DHM context |
output | destination buffer |
olen | on entry, must hold the size of the destination buffer on exit, holds the actual number of bytes written |
f_rng | RNG function, for blinding purposes |
p_rng | RNG parameter |
void dhm_free | ( | dhm_context * | ctx | ) |
Free and clear the components of a DHM key.
ctx | DHM context to free and clear |
void dhm_init | ( | dhm_context * | ctx | ) |
Initialize DHM context.
ctx | DHM context to be initialized |
int dhm_make_params | ( | dhm_context * | ctx, |
int | x_size, | ||
unsigned char * | output, | ||
size_t * | olen, | ||
int(*)(void *, unsigned char *, size_t) | f_rng, | ||
void * | p_rng | ||
) |
Setup and write the ServerKeyExchange parameters.
ctx | DHM context |
x_size | private value size in bytes |
output | destination buffer |
olen | number of chars written |
f_rng | RNG function |
p_rng | RNG parameter |
int dhm_make_public | ( | dhm_context * | ctx, |
int | x_size, | ||
unsigned char * | output, | ||
size_t | olen, | ||
int(*)(void *, unsigned char *, size_t) | f_rng, | ||
void * | p_rng | ||
) |
Create own private value X and export G^X.
ctx | DHM context |
x_size | private value size in bytes |
output | destination buffer |
olen | must be equal to ctx->P.len |
f_rng | RNG function |
p_rng | RNG parameter |
int dhm_read_params | ( | dhm_context * | ctx, |
unsigned char ** | p, | ||
const unsigned char * | end | ||
) |
Parse the ServerKeyExchange parameters.
ctx | DHM context |
p | &(start of input buffer) |
end | end of buffer |
int dhm_read_public | ( | dhm_context * | ctx, |
const unsigned char * | input, | ||
size_t | ilen | ||
) |
Import the peer's public value G^Y.
ctx | DHM context |
input | input buffer |
ilen | size of buffer |
int dhm_self_test | ( | int | verbose | ) |
Checkup routine.