Austin Blackstone / Mbed 2 deprecated client-lwip-lightswitch-demo-expanded

mbed client lightswitch demo

Dependencies:   mbed Socket lwip-eth lwip-sys lwip

Fork of mbed-client-classic-example-lwip by Austin Blackstone

mbedtls/source/ecjpake.c@11:cada08fc8a70, 2016-06-09 (annotated)

Committer:
mbedAustin
Date:
Thu Jun 09 17:08:36 2016 +0000
Revision:
11:cada08fc8a70
Commit for public Consumption

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbedAustin 11:cada08fc8a70 1 /*
mbedAustin 11:cada08fc8a70 2 * Elliptic curve J-PAKE
mbedAustin 11:cada08fc8a70 3 *
mbedAustin 11:cada08fc8a70 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
mbedAustin 11:cada08fc8a70 5 * SPDX-License-Identifier: Apache-2.0
mbedAustin 11:cada08fc8a70 6 *
mbedAustin 11:cada08fc8a70 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
mbedAustin 11:cada08fc8a70 8 * not use this file except in compliance with the License.
mbedAustin 11:cada08fc8a70 9 * You may obtain a copy of the License at
mbedAustin 11:cada08fc8a70 10 *
mbedAustin 11:cada08fc8a70 11 * http://www.apache.org/licenses/LICENSE-2.0
mbedAustin 11:cada08fc8a70 12 *
mbedAustin 11:cada08fc8a70 13 * Unless required by applicable law or agreed to in writing, software
mbedAustin 11:cada08fc8a70 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
mbedAustin 11:cada08fc8a70 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbedAustin 11:cada08fc8a70 16 * See the License for the specific language governing permissions and
mbedAustin 11:cada08fc8a70 17 * limitations under the License.
mbedAustin 11:cada08fc8a70 18 *
mbedAustin 11:cada08fc8a70 19 * This file is part of mbed TLS (https://tls.mbed.org)
mbedAustin 11:cada08fc8a70 20 */
mbedAustin 11:cada08fc8a70 21
mbedAustin 11:cada08fc8a70 22 /*
mbedAustin 11:cada08fc8a70 23 * References in the code are to the Thread v1.0 Specification,
mbedAustin 11:cada08fc8a70 24 * available to members of the Thread Group http://threadgroup.org/
mbedAustin 11:cada08fc8a70 25 */
mbedAustin 11:cada08fc8a70 26
mbedAustin 11:cada08fc8a70 27 #if !defined(MBEDTLS_CONFIG_FILE)
mbedAustin 11:cada08fc8a70 28 #include "mbedtls/config.h"
mbedAustin 11:cada08fc8a70 29 #else
mbedAustin 11:cada08fc8a70 30 #include MBEDTLS_CONFIG_FILE
mbedAustin 11:cada08fc8a70 31 #endif
mbedAustin 11:cada08fc8a70 32
mbedAustin 11:cada08fc8a70 33 #if defined(MBEDTLS_ECJPAKE_C)
mbedAustin 11:cada08fc8a70 34
mbedAustin 11:cada08fc8a70 35 #include "mbedtls/ecjpake.h"
mbedAustin 11:cada08fc8a70 36
mbedAustin 11:cada08fc8a70 37 #include <string.h>
mbedAustin 11:cada08fc8a70 38
mbedAustin 11:cada08fc8a70 39 /*
mbedAustin 11:cada08fc8a70 40 * Convert a mbedtls_ecjpake_role to identifier string
mbedAustin 11:cada08fc8a70 41 */
mbedAustin 11:cada08fc8a70 42 static const char * const ecjpake_id[] = {
mbedAustin 11:cada08fc8a70 43 "client",
mbedAustin 11:cada08fc8a70 44 "server"
mbedAustin 11:cada08fc8a70 45 };
mbedAustin 11:cada08fc8a70 46
mbedAustin 11:cada08fc8a70 47 #define ID_MINE ( ecjpake_id[ ctx->role ] )
mbedAustin 11:cada08fc8a70 48 #define ID_PEER ( ecjpake_id[ 1 - ctx->role ] )
mbedAustin 11:cada08fc8a70 49
mbedAustin 11:cada08fc8a70 50 /*
mbedAustin 11:cada08fc8a70 51 * Initialize context
mbedAustin 11:cada08fc8a70 52 */
mbedAustin 11:cada08fc8a70 53 void mbedtls_ecjpake_init( mbedtls_ecjpake_context *ctx )
mbedAustin 11:cada08fc8a70 54 {
mbedAustin 11:cada08fc8a70 55 if( ctx == NULL )
mbedAustin 11:cada08fc8a70 56 return;
mbedAustin 11:cada08fc8a70 57
mbedAustin 11:cada08fc8a70 58 ctx->md_info = NULL;
mbedAustin 11:cada08fc8a70 59 mbedtls_ecp_group_init( &ctx->grp );
mbedAustin 11:cada08fc8a70 60 ctx->point_format = MBEDTLS_ECP_PF_UNCOMPRESSED;
mbedAustin 11:cada08fc8a70 61
mbedAustin 11:cada08fc8a70 62 mbedtls_ecp_point_init( &ctx->Xm1 );
mbedAustin 11:cada08fc8a70 63 mbedtls_ecp_point_init( &ctx->Xm2 );
mbedAustin 11:cada08fc8a70 64 mbedtls_ecp_point_init( &ctx->Xp1 );
mbedAustin 11:cada08fc8a70 65 mbedtls_ecp_point_init( &ctx->Xp2 );
mbedAustin 11:cada08fc8a70 66 mbedtls_ecp_point_init( &ctx->Xp );
mbedAustin 11:cada08fc8a70 67
mbedAustin 11:cada08fc8a70 68 mbedtls_mpi_init( &ctx->xm1 );
mbedAustin 11:cada08fc8a70 69 mbedtls_mpi_init( &ctx->xm2 );
mbedAustin 11:cada08fc8a70 70 mbedtls_mpi_init( &ctx->s );
mbedAustin 11:cada08fc8a70 71 }
mbedAustin 11:cada08fc8a70 72
mbedAustin 11:cada08fc8a70 73 /*
mbedAustin 11:cada08fc8a70 74 * Free context
mbedAustin 11:cada08fc8a70 75 */
mbedAustin 11:cada08fc8a70 76 void mbedtls_ecjpake_free( mbedtls_ecjpake_context *ctx )
mbedAustin 11:cada08fc8a70 77 {
mbedAustin 11:cada08fc8a70 78 if( ctx == NULL )
mbedAustin 11:cada08fc8a70 79 return;
mbedAustin 11:cada08fc8a70 80
mbedAustin 11:cada08fc8a70 81 ctx->md_info = NULL;
mbedAustin 11:cada08fc8a70 82 mbedtls_ecp_group_free( &ctx->grp );
mbedAustin 11:cada08fc8a70 83
mbedAustin 11:cada08fc8a70 84 mbedtls_ecp_point_free( &ctx->Xm1 );
mbedAustin 11:cada08fc8a70 85 mbedtls_ecp_point_free( &ctx->Xm2 );
mbedAustin 11:cada08fc8a70 86 mbedtls_ecp_point_free( &ctx->Xp1 );
mbedAustin 11:cada08fc8a70 87 mbedtls_ecp_point_free( &ctx->Xp2 );
mbedAustin 11:cada08fc8a70 88 mbedtls_ecp_point_free( &ctx->Xp );
mbedAustin 11:cada08fc8a70 89
mbedAustin 11:cada08fc8a70 90 mbedtls_mpi_free( &ctx->xm1 );
mbedAustin 11:cada08fc8a70 91 mbedtls_mpi_free( &ctx->xm2 );
mbedAustin 11:cada08fc8a70 92 mbedtls_mpi_free( &ctx->s );
mbedAustin 11:cada08fc8a70 93 }
mbedAustin 11:cada08fc8a70 94
mbedAustin 11:cada08fc8a70 95 /*
mbedAustin 11:cada08fc8a70 96 * Setup context
mbedAustin 11:cada08fc8a70 97 */
mbedAustin 11:cada08fc8a70 98 int mbedtls_ecjpake_setup( mbedtls_ecjpake_context *ctx,
mbedAustin 11:cada08fc8a70 99 mbedtls_ecjpake_role role,
mbedAustin 11:cada08fc8a70 100 mbedtls_md_type_t hash,
mbedAustin 11:cada08fc8a70 101 mbedtls_ecp_group_id curve,
mbedAustin 11:cada08fc8a70 102 const unsigned char *secret,
mbedAustin 11:cada08fc8a70 103 size_t len )
mbedAustin 11:cada08fc8a70 104 {
mbedAustin 11:cada08fc8a70 105 int ret;
mbedAustin 11:cada08fc8a70 106
mbedAustin 11:cada08fc8a70 107 ctx->role = role;
mbedAustin 11:cada08fc8a70 108
mbedAustin 11:cada08fc8a70 109 if( ( ctx->md_info = mbedtls_md_info_from_type( hash ) ) == NULL )
mbedAustin 11:cada08fc8a70 110 return( MBEDTLS_ERR_MD_FEATURE_UNAVAILABLE );
mbedAustin 11:cada08fc8a70 111
mbedAustin 11:cada08fc8a70 112 MBEDTLS_MPI_CHK( mbedtls_ecp_group_load( &ctx->grp, curve ) );
mbedAustin 11:cada08fc8a70 113
mbedAustin 11:cada08fc8a70 114 MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( &ctx->s, secret, len ) );
mbedAustin 11:cada08fc8a70 115
mbedAustin 11:cada08fc8a70 116 cleanup:
mbedAustin 11:cada08fc8a70 117 if( ret != 0 )
mbedAustin 11:cada08fc8a70 118 mbedtls_ecjpake_free( ctx );
mbedAustin 11:cada08fc8a70 119
mbedAustin 11:cada08fc8a70 120 return( ret );
mbedAustin 11:cada08fc8a70 121 }
mbedAustin 11:cada08fc8a70 122
mbedAustin 11:cada08fc8a70 123 /*
mbedAustin 11:cada08fc8a70 124 * Check if context is ready for use
mbedAustin 11:cada08fc8a70 125 */
mbedAustin 11:cada08fc8a70 126 int mbedtls_ecjpake_check( const mbedtls_ecjpake_context *ctx )
mbedAustin 11:cada08fc8a70 127 {
mbedAustin 11:cada08fc8a70 128 if( ctx->md_info == NULL ||
mbedAustin 11:cada08fc8a70 129 ctx->grp.id == MBEDTLS_ECP_DP_NONE ||
mbedAustin 11:cada08fc8a70 130 ctx->s.p == NULL )
mbedAustin 11:cada08fc8a70 131 {
mbedAustin 11:cada08fc8a70 132 return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
mbedAustin 11:cada08fc8a70 133 }
mbedAustin 11:cada08fc8a70 134
mbedAustin 11:cada08fc8a70 135 return( 0 );
mbedAustin 11:cada08fc8a70 136 }
mbedAustin 11:cada08fc8a70 137
mbedAustin 11:cada08fc8a70 138 /*
mbedAustin 11:cada08fc8a70 139 * Write a point plus its length to a buffer
mbedAustin 11:cada08fc8a70 140 */
mbedAustin 11:cada08fc8a70 141 static int ecjpake_write_len_point( unsigned char **p,
mbedAustin 11:cada08fc8a70 142 const unsigned char *end,
mbedAustin 11:cada08fc8a70 143 const mbedtls_ecp_group *grp,
mbedAustin 11:cada08fc8a70 144 const int pf,
mbedAustin 11:cada08fc8a70 145 const mbedtls_ecp_point *P )
mbedAustin 11:cada08fc8a70 146 {
mbedAustin 11:cada08fc8a70 147 int ret;
mbedAustin 11:cada08fc8a70 148 size_t len;
mbedAustin 11:cada08fc8a70 149
mbedAustin 11:cada08fc8a70 150 /* Need at least 4 for length plus 1 for point */
mbedAustin 11:cada08fc8a70 151 if( end < *p || end - *p < 5 )
mbedAustin 11:cada08fc8a70 152 return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL );
mbedAustin 11:cada08fc8a70 153
mbedAustin 11:cada08fc8a70 154 ret = mbedtls_ecp_point_write_binary( grp, P, pf,
mbedAustin 11:cada08fc8a70 155 &len, *p + 4, end - ( *p + 4 ) );
mbedAustin 11:cada08fc8a70 156 if( ret != 0 )
mbedAustin 11:cada08fc8a70 157 return( ret );
mbedAustin 11:cada08fc8a70 158
mbedAustin 11:cada08fc8a70 159 (*p)[0] = (unsigned char)( ( len >> 24 ) & 0xFF );
mbedAustin 11:cada08fc8a70 160 (*p)[1] = (unsigned char)( ( len >> 16 ) & 0xFF );
mbedAustin 11:cada08fc8a70 161 (*p)[2] = (unsigned char)( ( len >> 8 ) & 0xFF );
mbedAustin 11:cada08fc8a70 162 (*p)[3] = (unsigned char)( ( len ) & 0xFF );
mbedAustin 11:cada08fc8a70 163
mbedAustin 11:cada08fc8a70 164 *p += 4 + len;
mbedAustin 11:cada08fc8a70 165
mbedAustin 11:cada08fc8a70 166 return( 0 );
mbedAustin 11:cada08fc8a70 167 }
mbedAustin 11:cada08fc8a70 168
mbedAustin 11:cada08fc8a70 169 /*
mbedAustin 11:cada08fc8a70 170 * Size of the temporary buffer for ecjpake_hash:
mbedAustin 11:cada08fc8a70 171 * 3 EC points plus their length, plus ID and its length (4 + 6 bytes)
mbedAustin 11:cada08fc8a70 172 */
mbedAustin 11:cada08fc8a70 173 #define ECJPAKE_HASH_BUF_LEN ( 3 * ( 4 + MBEDTLS_ECP_MAX_PT_LEN ) + 4 + 6 )
mbedAustin 11:cada08fc8a70 174
mbedAustin 11:cada08fc8a70 175 /*
mbedAustin 11:cada08fc8a70 176 * Compute hash for ZKP (7.4.2.2.2.1)
mbedAustin 11:cada08fc8a70 177 */
mbedAustin 11:cada08fc8a70 178 static int ecjpake_hash( const mbedtls_md_info_t *md_info,
mbedAustin 11:cada08fc8a70 179 const mbedtls_ecp_group *grp,
mbedAustin 11:cada08fc8a70 180 const int pf,
mbedAustin 11:cada08fc8a70 181 const mbedtls_ecp_point *G,
mbedAustin 11:cada08fc8a70 182 const mbedtls_ecp_point *V,
mbedAustin 11:cada08fc8a70 183 const mbedtls_ecp_point *X,
mbedAustin 11:cada08fc8a70 184 const char *id,
mbedAustin 11:cada08fc8a70 185 mbedtls_mpi *h )
mbedAustin 11:cada08fc8a70 186 {
mbedAustin 11:cada08fc8a70 187 int ret;
mbedAustin 11:cada08fc8a70 188 unsigned char buf[ECJPAKE_HASH_BUF_LEN];
mbedAustin 11:cada08fc8a70 189 unsigned char *p = buf;
mbedAustin 11:cada08fc8a70 190 const unsigned char *end = buf + sizeof( buf );
mbedAustin 11:cada08fc8a70 191 const size_t id_len = strlen( id );
mbedAustin 11:cada08fc8a70 192 unsigned char hash[MBEDTLS_MD_MAX_SIZE];
mbedAustin 11:cada08fc8a70 193
mbedAustin 11:cada08fc8a70 194 /* Write things to temporary buffer */
mbedAustin 11:cada08fc8a70 195 MBEDTLS_MPI_CHK( ecjpake_write_len_point( &p, end, grp, pf, G ) );
mbedAustin 11:cada08fc8a70 196 MBEDTLS_MPI_CHK( ecjpake_write_len_point( &p, end, grp, pf, V ) );
mbedAustin 11:cada08fc8a70 197 MBEDTLS_MPI_CHK( ecjpake_write_len_point( &p, end, grp, pf, X ) );
mbedAustin 11:cada08fc8a70 198
mbedAustin 11:cada08fc8a70 199 if( end - p < 4 )
mbedAustin 11:cada08fc8a70 200 return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL );
mbedAustin 11:cada08fc8a70 201
mbedAustin 11:cada08fc8a70 202 *p++ = (unsigned char)( ( id_len >> 24 ) & 0xFF );
mbedAustin 11:cada08fc8a70 203 *p++ = (unsigned char)( ( id_len >> 16 ) & 0xFF );
mbedAustin 11:cada08fc8a70 204 *p++ = (unsigned char)( ( id_len >> 8 ) & 0xFF );
mbedAustin 11:cada08fc8a70 205 *p++ = (unsigned char)( ( id_len ) & 0xFF );
mbedAustin 11:cada08fc8a70 206
mbedAustin 11:cada08fc8a70 207 if( end < p || (size_t)( end - p ) < id_len )
mbedAustin 11:cada08fc8a70 208 return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL );
mbedAustin 11:cada08fc8a70 209
mbedAustin 11:cada08fc8a70 210 memcpy( p, id, id_len );
mbedAustin 11:cada08fc8a70 211 p += id_len;
mbedAustin 11:cada08fc8a70 212
mbedAustin 11:cada08fc8a70 213 /* Compute hash */
mbedAustin 11:cada08fc8a70 214 mbedtls_md( md_info, buf, p - buf, hash );
mbedAustin 11:cada08fc8a70 215
mbedAustin 11:cada08fc8a70 216 /* Turn it into an integer mod n */
mbedAustin 11:cada08fc8a70 217 MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( h, hash,
mbedAustin 11:cada08fc8a70 218 mbedtls_md_get_size( md_info ) ) );
mbedAustin 11:cada08fc8a70 219 MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( h, h, &grp->N ) );
mbedAustin 11:cada08fc8a70 220
mbedAustin 11:cada08fc8a70 221 cleanup:
mbedAustin 11:cada08fc8a70 222 return( ret );
mbedAustin 11:cada08fc8a70 223 }
mbedAustin 11:cada08fc8a70 224
mbedAustin 11:cada08fc8a70 225 /*
mbedAustin 11:cada08fc8a70 226 * Parse a ECShnorrZKP (7.4.2.2.2) and verify it (7.4.2.3.3)
mbedAustin 11:cada08fc8a70 227 */
mbedAustin 11:cada08fc8a70 228 static int ecjpake_zkp_read( const mbedtls_md_info_t *md_info,
mbedAustin 11:cada08fc8a70 229 const mbedtls_ecp_group *grp,
mbedAustin 11:cada08fc8a70 230 const int pf,
mbedAustin 11:cada08fc8a70 231 const mbedtls_ecp_point *G,
mbedAustin 11:cada08fc8a70 232 const mbedtls_ecp_point *X,
mbedAustin 11:cada08fc8a70 233 const char *id,
mbedAustin 11:cada08fc8a70 234 const unsigned char **p,
mbedAustin 11:cada08fc8a70 235 const unsigned char *end )
mbedAustin 11:cada08fc8a70 236 {
mbedAustin 11:cada08fc8a70 237 int ret;
mbedAustin 11:cada08fc8a70 238 mbedtls_ecp_point V, VV;
mbedAustin 11:cada08fc8a70 239 mbedtls_mpi r, h;
mbedAustin 11:cada08fc8a70 240 size_t r_len;
mbedAustin 11:cada08fc8a70 241
mbedAustin 11:cada08fc8a70 242 mbedtls_ecp_point_init( &V );
mbedAustin 11:cada08fc8a70 243 mbedtls_ecp_point_init( &VV );
mbedAustin 11:cada08fc8a70 244 mbedtls_mpi_init( &r );
mbedAustin 11:cada08fc8a70 245 mbedtls_mpi_init( &h );
mbedAustin 11:cada08fc8a70 246
mbedAustin 11:cada08fc8a70 247 /*
mbedAustin 11:cada08fc8a70 248 * struct {
mbedAustin 11:cada08fc8a70 249 * ECPoint V;
mbedAustin 11:cada08fc8a70 250 * opaque r<1..2^8-1>;
mbedAustin 11:cada08fc8a70 251 * } ECSchnorrZKP;
mbedAustin 11:cada08fc8a70 252 */
mbedAustin 11:cada08fc8a70 253 if( end < *p )
mbedAustin 11:cada08fc8a70 254 return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
mbedAustin 11:cada08fc8a70 255
mbedAustin 11:cada08fc8a70 256 MBEDTLS_MPI_CHK( mbedtls_ecp_tls_read_point( grp, &V, p, end - *p ) );
mbedAustin 11:cada08fc8a70 257
mbedAustin 11:cada08fc8a70 258 if( end < *p || (size_t)( end - *p ) < 1 )
mbedAustin 11:cada08fc8a70 259 {
mbedAustin 11:cada08fc8a70 260 ret = MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
mbedAustin 11:cada08fc8a70 261 goto cleanup;
mbedAustin 11:cada08fc8a70 262 }
mbedAustin 11:cada08fc8a70 263
mbedAustin 11:cada08fc8a70 264 r_len = *(*p)++;
mbedAustin 11:cada08fc8a70 265
mbedAustin 11:cada08fc8a70 266 if( end < *p || (size_t)( end - *p ) < r_len )
mbedAustin 11:cada08fc8a70 267 {
mbedAustin 11:cada08fc8a70 268 ret = MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
mbedAustin 11:cada08fc8a70 269 goto cleanup;
mbedAustin 11:cada08fc8a70 270 }
mbedAustin 11:cada08fc8a70 271
mbedAustin 11:cada08fc8a70 272 MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( &r, *p, r_len ) );
mbedAustin 11:cada08fc8a70 273 *p += r_len;
mbedAustin 11:cada08fc8a70 274
mbedAustin 11:cada08fc8a70 275 /*
mbedAustin 11:cada08fc8a70 276 * Verification
mbedAustin 11:cada08fc8a70 277 */
mbedAustin 11:cada08fc8a70 278 MBEDTLS_MPI_CHK( ecjpake_hash( md_info, grp, pf, G, &V, X, id, &h ) );
mbedAustin 11:cada08fc8a70 279 MBEDTLS_MPI_CHK( mbedtls_ecp_muladd( (mbedtls_ecp_group *) grp,
mbedAustin 11:cada08fc8a70 280 &VV, &h, X, &r, G ) );
mbedAustin 11:cada08fc8a70 281
mbedAustin 11:cada08fc8a70 282 if( mbedtls_ecp_point_cmp( &VV, &V ) != 0 )
mbedAustin 11:cada08fc8a70 283 {
mbedAustin 11:cada08fc8a70 284 ret = MBEDTLS_ERR_ECP_VERIFY_FAILED;
mbedAustin 11:cada08fc8a70 285 goto cleanup;
mbedAustin 11:cada08fc8a70 286 }
mbedAustin 11:cada08fc8a70 287
mbedAustin 11:cada08fc8a70 288 cleanup:
mbedAustin 11:cada08fc8a70 289 mbedtls_ecp_point_free( &V );
mbedAustin 11:cada08fc8a70 290 mbedtls_ecp_point_free( &VV );
mbedAustin 11:cada08fc8a70 291 mbedtls_mpi_free( &r );
mbedAustin 11:cada08fc8a70 292 mbedtls_mpi_free( &h );
mbedAustin 11:cada08fc8a70 293
mbedAustin 11:cada08fc8a70 294 return( ret );
mbedAustin 11:cada08fc8a70 295 }
mbedAustin 11:cada08fc8a70 296
mbedAustin 11:cada08fc8a70 297 /*
mbedAustin 11:cada08fc8a70 298 * Generate ZKP (7.4.2.3.2) and write it as ECSchnorrZKP (7.4.2.2.2)
mbedAustin 11:cada08fc8a70 299 */
mbedAustin 11:cada08fc8a70 300 static int ecjpake_zkp_write( const mbedtls_md_info_t *md_info,
mbedAustin 11:cada08fc8a70 301 const mbedtls_ecp_group *grp,
mbedAustin 11:cada08fc8a70 302 const int pf,
mbedAustin 11:cada08fc8a70 303 const mbedtls_ecp_point *G,
mbedAustin 11:cada08fc8a70 304 const mbedtls_mpi *x,
mbedAustin 11:cada08fc8a70 305 const mbedtls_ecp_point *X,
mbedAustin 11:cada08fc8a70 306 const char *id,
mbedAustin 11:cada08fc8a70 307 unsigned char **p,
mbedAustin 11:cada08fc8a70 308 const unsigned char *end,
mbedAustin 11:cada08fc8a70 309 int (*f_rng)(void *, unsigned char *, size_t),
mbedAustin 11:cada08fc8a70 310 void *p_rng )
mbedAustin 11:cada08fc8a70 311 {
mbedAustin 11:cada08fc8a70 312 int ret;
mbedAustin 11:cada08fc8a70 313 mbedtls_ecp_point V;
mbedAustin 11:cada08fc8a70 314 mbedtls_mpi v;
mbedAustin 11:cada08fc8a70 315 mbedtls_mpi h; /* later recycled to hold r */
mbedAustin 11:cada08fc8a70 316 size_t len;
mbedAustin 11:cada08fc8a70 317
mbedAustin 11:cada08fc8a70 318 if( end < *p )
mbedAustin 11:cada08fc8a70 319 return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL );
mbedAustin 11:cada08fc8a70 320
mbedAustin 11:cada08fc8a70 321 mbedtls_ecp_point_init( &V );
mbedAustin 11:cada08fc8a70 322 mbedtls_mpi_init( &v );
mbedAustin 11:cada08fc8a70 323 mbedtls_mpi_init( &h );
mbedAustin 11:cada08fc8a70 324
mbedAustin 11:cada08fc8a70 325 /* Compute signature */
mbedAustin 11:cada08fc8a70 326 MBEDTLS_MPI_CHK( mbedtls_ecp_gen_keypair_base( (mbedtls_ecp_group *) grp,
mbedAustin 11:cada08fc8a70 327 G, &v, &V, f_rng, p_rng ) );
mbedAustin 11:cada08fc8a70 328 MBEDTLS_MPI_CHK( ecjpake_hash( md_info, grp, pf, G, &V, X, id, &h ) );
mbedAustin 11:cada08fc8a70 329 MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &h, &h, x ) ); /* x*h */
mbedAustin 11:cada08fc8a70 330 MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mpi( &h, &v, &h ) ); /* v - x*h */
mbedAustin 11:cada08fc8a70 331 MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &h, &h, &grp->N ) ); /* r */
mbedAustin 11:cada08fc8a70 332
mbedAustin 11:cada08fc8a70 333 /* Write it out */
mbedAustin 11:cada08fc8a70 334 MBEDTLS_MPI_CHK( mbedtls_ecp_tls_write_point( grp, &V,
mbedAustin 11:cada08fc8a70 335 pf, &len, *p, end - *p ) );
mbedAustin 11:cada08fc8a70 336 *p += len;
mbedAustin 11:cada08fc8a70 337
mbedAustin 11:cada08fc8a70 338 len = mbedtls_mpi_size( &h ); /* actually r */
mbedAustin 11:cada08fc8a70 339 if( end < *p || (size_t)( end - *p ) < 1 + len || len > 255 )
mbedAustin 11:cada08fc8a70 340 {
mbedAustin 11:cada08fc8a70 341 ret = MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL;
mbedAustin 11:cada08fc8a70 342 goto cleanup;
mbedAustin 11:cada08fc8a70 343 }
mbedAustin 11:cada08fc8a70 344
mbedAustin 11:cada08fc8a70 345 *(*p)++ = (unsigned char)( len & 0xFF );
mbedAustin 11:cada08fc8a70 346 MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( &h, *p, len ) ); /* r */
mbedAustin 11:cada08fc8a70 347 *p += len;
mbedAustin 11:cada08fc8a70 348
mbedAustin 11:cada08fc8a70 349 cleanup:
mbedAustin 11:cada08fc8a70 350 mbedtls_ecp_point_free( &V );
mbedAustin 11:cada08fc8a70 351 mbedtls_mpi_free( &v );
mbedAustin 11:cada08fc8a70 352 mbedtls_mpi_free( &h );
mbedAustin 11:cada08fc8a70 353
mbedAustin 11:cada08fc8a70 354 return( ret );
mbedAustin 11:cada08fc8a70 355 }
mbedAustin 11:cada08fc8a70 356
mbedAustin 11:cada08fc8a70 357 /*
mbedAustin 11:cada08fc8a70 358 * Parse a ECJPAKEKeyKP (7.4.2.2.1) and check proof
mbedAustin 11:cada08fc8a70 359 * Output: verified public key X
mbedAustin 11:cada08fc8a70 360 */
mbedAustin 11:cada08fc8a70 361 static int ecjpake_kkp_read( const mbedtls_md_info_t *md_info,
mbedAustin 11:cada08fc8a70 362 const mbedtls_ecp_group *grp,
mbedAustin 11:cada08fc8a70 363 const int pf,
mbedAustin 11:cada08fc8a70 364 const mbedtls_ecp_point *G,
mbedAustin 11:cada08fc8a70 365 mbedtls_ecp_point *X,
mbedAustin 11:cada08fc8a70 366 const char *id,
mbedAustin 11:cada08fc8a70 367 const unsigned char **p,
mbedAustin 11:cada08fc8a70 368 const unsigned char *end )
mbedAustin 11:cada08fc8a70 369 {
mbedAustin 11:cada08fc8a70 370 int ret;
mbedAustin 11:cada08fc8a70 371
mbedAustin 11:cada08fc8a70 372 if( end < *p )
mbedAustin 11:cada08fc8a70 373 return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
mbedAustin 11:cada08fc8a70 374
mbedAustin 11:cada08fc8a70 375 /*
mbedAustin 11:cada08fc8a70 376 * struct {
mbedAustin 11:cada08fc8a70 377 * ECPoint X;
mbedAustin 11:cada08fc8a70 378 * ECSchnorrZKP zkp;
mbedAustin 11:cada08fc8a70 379 * } ECJPAKEKeyKP;
mbedAustin 11:cada08fc8a70 380 */
mbedAustin 11:cada08fc8a70 381 MBEDTLS_MPI_CHK( mbedtls_ecp_tls_read_point( grp, X, p, end - *p ) );
mbedAustin 11:cada08fc8a70 382 if( mbedtls_ecp_is_zero( X ) )
mbedAustin 11:cada08fc8a70 383 {
mbedAustin 11:cada08fc8a70 384 ret = MBEDTLS_ERR_ECP_INVALID_KEY;
mbedAustin 11:cada08fc8a70 385 goto cleanup;
mbedAustin 11:cada08fc8a70 386 }
mbedAustin 11:cada08fc8a70 387
mbedAustin 11:cada08fc8a70 388 MBEDTLS_MPI_CHK( ecjpake_zkp_read( md_info, grp, pf, G, X, id, p, end ) );
mbedAustin 11:cada08fc8a70 389
mbedAustin 11:cada08fc8a70 390 cleanup:
mbedAustin 11:cada08fc8a70 391 return( ret );
mbedAustin 11:cada08fc8a70 392 }
mbedAustin 11:cada08fc8a70 393
mbedAustin 11:cada08fc8a70 394 /*
mbedAustin 11:cada08fc8a70 395 * Generate an ECJPAKEKeyKP
mbedAustin 11:cada08fc8a70 396 * Output: the serialized structure, plus private/public key pair
mbedAustin 11:cada08fc8a70 397 */
mbedAustin 11:cada08fc8a70 398 static int ecjpake_kkp_write( const mbedtls_md_info_t *md_info,
mbedAustin 11:cada08fc8a70 399 const mbedtls_ecp_group *grp,
mbedAustin 11:cada08fc8a70 400 const int pf,
mbedAustin 11:cada08fc8a70 401 const mbedtls_ecp_point *G,
mbedAustin 11:cada08fc8a70 402 mbedtls_mpi *x,
mbedAustin 11:cada08fc8a70 403 mbedtls_ecp_point *X,
mbedAustin 11:cada08fc8a70 404 const char *id,
mbedAustin 11:cada08fc8a70 405 unsigned char **p,
mbedAustin 11:cada08fc8a70 406 const unsigned char *end,
mbedAustin 11:cada08fc8a70 407 int (*f_rng)(void *, unsigned char *, size_t),
mbedAustin 11:cada08fc8a70 408 void *p_rng )
mbedAustin 11:cada08fc8a70 409 {
mbedAustin 11:cada08fc8a70 410 int ret;
mbedAustin 11:cada08fc8a70 411 size_t len;
mbedAustin 11:cada08fc8a70 412
mbedAustin 11:cada08fc8a70 413 if( end < *p )
mbedAustin 11:cada08fc8a70 414 return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL );
mbedAustin 11:cada08fc8a70 415
mbedAustin 11:cada08fc8a70 416 /* Generate key (7.4.2.3.1) and write it out */
mbedAustin 11:cada08fc8a70 417 MBEDTLS_MPI_CHK( mbedtls_ecp_gen_keypair_base( (mbedtls_ecp_group *) grp, G, x, X,
mbedAustin 11:cada08fc8a70 418 f_rng, p_rng ) );
mbedAustin 11:cada08fc8a70 419 MBEDTLS_MPI_CHK( mbedtls_ecp_tls_write_point( grp, X,
mbedAustin 11:cada08fc8a70 420 pf, &len, *p, end - *p ) );
mbedAustin 11:cada08fc8a70 421 *p += len;
mbedAustin 11:cada08fc8a70 422
mbedAustin 11:cada08fc8a70 423 /* Generate and write proof */
mbedAustin 11:cada08fc8a70 424 MBEDTLS_MPI_CHK( ecjpake_zkp_write( md_info, grp, pf, G, x, X, id,
mbedAustin 11:cada08fc8a70 425 p, end, f_rng, p_rng ) );
mbedAustin 11:cada08fc8a70 426
mbedAustin 11:cada08fc8a70 427 cleanup:
mbedAustin 11:cada08fc8a70 428 return( ret );
mbedAustin 11:cada08fc8a70 429 }
mbedAustin 11:cada08fc8a70 430
mbedAustin 11:cada08fc8a70 431 /*
mbedAustin 11:cada08fc8a70 432 * Read a ECJPAKEKeyKPPairList (7.4.2.3) and check proofs
mbedAustin 11:cada08fc8a70 433 * Ouputs: verified peer public keys Xa, Xb
mbedAustin 11:cada08fc8a70 434 */
mbedAustin 11:cada08fc8a70 435 static int ecjpake_kkpp_read( const mbedtls_md_info_t *md_info,
mbedAustin 11:cada08fc8a70 436 const mbedtls_ecp_group *grp,
mbedAustin 11:cada08fc8a70 437 const int pf,
mbedAustin 11:cada08fc8a70 438 const mbedtls_ecp_point *G,
mbedAustin 11:cada08fc8a70 439 mbedtls_ecp_point *Xa,
mbedAustin 11:cada08fc8a70 440 mbedtls_ecp_point *Xb,
mbedAustin 11:cada08fc8a70 441 const char *id,
mbedAustin 11:cada08fc8a70 442 const unsigned char *buf,
mbedAustin 11:cada08fc8a70 443 size_t len )
mbedAustin 11:cada08fc8a70 444 {
mbedAustin 11:cada08fc8a70 445 int ret;
mbedAustin 11:cada08fc8a70 446 const unsigned char *p = buf;
mbedAustin 11:cada08fc8a70 447 const unsigned char *end = buf + len;
mbedAustin 11:cada08fc8a70 448
mbedAustin 11:cada08fc8a70 449 /*
mbedAustin 11:cada08fc8a70 450 * struct {
mbedAustin 11:cada08fc8a70 451 * ECJPAKEKeyKP ecjpake_key_kp_pair_list[2];
mbedAustin 11:cada08fc8a70 452 * } ECJPAKEKeyKPPairList;
mbedAustin 11:cada08fc8a70 453 */
mbedAustin 11:cada08fc8a70 454 MBEDTLS_MPI_CHK( ecjpake_kkp_read( md_info, grp, pf, G, Xa, id, &p, end ) );
mbedAustin 11:cada08fc8a70 455 MBEDTLS_MPI_CHK( ecjpake_kkp_read( md_info, grp, pf, G, Xb, id, &p, end ) );
mbedAustin 11:cada08fc8a70 456
mbedAustin 11:cada08fc8a70 457 if( p != end )
mbedAustin 11:cada08fc8a70 458 ret = MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
mbedAustin 11:cada08fc8a70 459
mbedAustin 11:cada08fc8a70 460 cleanup:
mbedAustin 11:cada08fc8a70 461 return( ret );
mbedAustin 11:cada08fc8a70 462 }
mbedAustin 11:cada08fc8a70 463
mbedAustin 11:cada08fc8a70 464 /*
mbedAustin 11:cada08fc8a70 465 * Generate a ECJPAKEKeyKPPairList
mbedAustin 11:cada08fc8a70 466 * Outputs: the serialized structure, plus two private/public key pairs
mbedAustin 11:cada08fc8a70 467 */
mbedAustin 11:cada08fc8a70 468 static int ecjpake_kkpp_write( const mbedtls_md_info_t *md_info,
mbedAustin 11:cada08fc8a70 469 const mbedtls_ecp_group *grp,
mbedAustin 11:cada08fc8a70 470 const int pf,
mbedAustin 11:cada08fc8a70 471 const mbedtls_ecp_point *G,
mbedAustin 11:cada08fc8a70 472 mbedtls_mpi *xm1,
mbedAustin 11:cada08fc8a70 473 mbedtls_ecp_point *Xa,
mbedAustin 11:cada08fc8a70 474 mbedtls_mpi *xm2,
mbedAustin 11:cada08fc8a70 475 mbedtls_ecp_point *Xb,
mbedAustin 11:cada08fc8a70 476 const char *id,
mbedAustin 11:cada08fc8a70 477 unsigned char *buf,
mbedAustin 11:cada08fc8a70 478 size_t len,
mbedAustin 11:cada08fc8a70 479 size_t *olen,
mbedAustin 11:cada08fc8a70 480 int (*f_rng)(void *, unsigned char *, size_t),
mbedAustin 11:cada08fc8a70 481 void *p_rng )
mbedAustin 11:cada08fc8a70 482 {
mbedAustin 11:cada08fc8a70 483 int ret;
mbedAustin 11:cada08fc8a70 484 unsigned char *p = buf;
mbedAustin 11:cada08fc8a70 485 const unsigned char *end = buf + len;
mbedAustin 11:cada08fc8a70 486
mbedAustin 11:cada08fc8a70 487 MBEDTLS_MPI_CHK( ecjpake_kkp_write( md_info, grp, pf, G, xm1, Xa, id,
mbedAustin 11:cada08fc8a70 488 &p, end, f_rng, p_rng ) );
mbedAustin 11:cada08fc8a70 489 MBEDTLS_MPI_CHK( ecjpake_kkp_write( md_info, grp, pf, G, xm2, Xb, id,
mbedAustin 11:cada08fc8a70 490 &p, end, f_rng, p_rng ) );
mbedAustin 11:cada08fc8a70 491
mbedAustin 11:cada08fc8a70 492 *olen = p - buf;
mbedAustin 11:cada08fc8a70 493
mbedAustin 11:cada08fc8a70 494 cleanup:
mbedAustin 11:cada08fc8a70 495 return( ret );
mbedAustin 11:cada08fc8a70 496 }
mbedAustin 11:cada08fc8a70 497
mbedAustin 11:cada08fc8a70 498 /*
mbedAustin 11:cada08fc8a70 499 * Read and process the first round message
mbedAustin 11:cada08fc8a70 500 */
mbedAustin 11:cada08fc8a70 501 int mbedtls_ecjpake_read_round_one( mbedtls_ecjpake_context *ctx,
mbedAustin 11:cada08fc8a70 502 const unsigned char *buf,
mbedAustin 11:cada08fc8a70 503 size_t len )
mbedAustin 11:cada08fc8a70 504 {
mbedAustin 11:cada08fc8a70 505 return( ecjpake_kkpp_read( ctx->md_info, &ctx->grp, ctx->point_format,
mbedAustin 11:cada08fc8a70 506 &ctx->grp.G,
mbedAustin 11:cada08fc8a70 507 &ctx->Xp1, &ctx->Xp2, ID_PEER,
mbedAustin 11:cada08fc8a70 508 buf, len ) );
mbedAustin 11:cada08fc8a70 509 }
mbedAustin 11:cada08fc8a70 510
mbedAustin 11:cada08fc8a70 511 /*
mbedAustin 11:cada08fc8a70 512 * Generate and write the first round message
mbedAustin 11:cada08fc8a70 513 */
mbedAustin 11:cada08fc8a70 514 int mbedtls_ecjpake_write_round_one( mbedtls_ecjpake_context *ctx,
mbedAustin 11:cada08fc8a70 515 unsigned char *buf, size_t len, size_t *olen,
mbedAustin 11:cada08fc8a70 516 int (*f_rng)(void *, unsigned char *, size_t),
mbedAustin 11:cada08fc8a70 517 void *p_rng )
mbedAustin 11:cada08fc8a70 518 {
mbedAustin 11:cada08fc8a70 519 return( ecjpake_kkpp_write( ctx->md_info, &ctx->grp, ctx->point_format,
mbedAustin 11:cada08fc8a70 520 &ctx->grp.G,
mbedAustin 11:cada08fc8a70 521 &ctx->xm1, &ctx->Xm1, &ctx->xm2, &ctx->Xm2,
mbedAustin 11:cada08fc8a70 522 ID_MINE, buf, len, olen, f_rng, p_rng ) );
mbedAustin 11:cada08fc8a70 523 }
mbedAustin 11:cada08fc8a70 524
mbedAustin 11:cada08fc8a70 525 /*
mbedAustin 11:cada08fc8a70 526 * Compute the sum of three points R = A + B + C
mbedAustin 11:cada08fc8a70 527 */
mbedAustin 11:cada08fc8a70 528 static int ecjpake_ecp_add3( mbedtls_ecp_group *grp, mbedtls_ecp_point *R,
mbedAustin 11:cada08fc8a70 529 const mbedtls_ecp_point *A,
mbedAustin 11:cada08fc8a70 530 const mbedtls_ecp_point *B,
mbedAustin 11:cada08fc8a70 531 const mbedtls_ecp_point *C )
mbedAustin 11:cada08fc8a70 532 {
mbedAustin 11:cada08fc8a70 533 int ret;
mbedAustin 11:cada08fc8a70 534 mbedtls_mpi one;
mbedAustin 11:cada08fc8a70 535
mbedAustin 11:cada08fc8a70 536 mbedtls_mpi_init( &one );
mbedAustin 11:cada08fc8a70 537
mbedAustin 11:cada08fc8a70 538 MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &one, 1 ) );
mbedAustin 11:cada08fc8a70 539 MBEDTLS_MPI_CHK( mbedtls_ecp_muladd( grp, R, &one, A, &one, B ) );
mbedAustin 11:cada08fc8a70 540 MBEDTLS_MPI_CHK( mbedtls_ecp_muladd( grp, R, &one, R, &one, C ) );
mbedAustin 11:cada08fc8a70 541
mbedAustin 11:cada08fc8a70 542 cleanup:
mbedAustin 11:cada08fc8a70 543 mbedtls_mpi_free( &one );
mbedAustin 11:cada08fc8a70 544
mbedAustin 11:cada08fc8a70 545 return( ret );
mbedAustin 11:cada08fc8a70 546 }
mbedAustin 11:cada08fc8a70 547
mbedAustin 11:cada08fc8a70 548 /*
mbedAustin 11:cada08fc8a70 549 * Read and process second round message (C: 7.4.2.5, S: 7.4.2.6)
mbedAustin 11:cada08fc8a70 550 */
mbedAustin 11:cada08fc8a70 551 int mbedtls_ecjpake_read_round_two( mbedtls_ecjpake_context *ctx,
mbedAustin 11:cada08fc8a70 552 const unsigned char *buf,
mbedAustin 11:cada08fc8a70 553 size_t len )
mbedAustin 11:cada08fc8a70 554 {
mbedAustin 11:cada08fc8a70 555 int ret;
mbedAustin 11:cada08fc8a70 556 const unsigned char *p = buf;
mbedAustin 11:cada08fc8a70 557 const unsigned char *end = buf + len;
mbedAustin 11:cada08fc8a70 558 mbedtls_ecp_group grp;
mbedAustin 11:cada08fc8a70 559 mbedtls_ecp_point G; /* C: GB, S: GA */
mbedAustin 11:cada08fc8a70 560
mbedAustin 11:cada08fc8a70 561 mbedtls_ecp_group_init( &grp );
mbedAustin 11:cada08fc8a70 562 mbedtls_ecp_point_init( &G );
mbedAustin 11:cada08fc8a70 563
mbedAustin 11:cada08fc8a70 564 /*
mbedAustin 11:cada08fc8a70 565 * Server: GA = X3 + X4 + X1 (7.4.2.6.1)
mbedAustin 11:cada08fc8a70 566 * Client: GB = X1 + X2 + X3 (7.4.2.5.1)
mbedAustin 11:cada08fc8a70 567 * Unified: G = Xm1 + Xm2 + Xp1
mbedAustin 11:cada08fc8a70 568 * We need that before parsing in order to check Xp as we read it
mbedAustin 11:cada08fc8a70 569 */
mbedAustin 11:cada08fc8a70 570 MBEDTLS_MPI_CHK( ecjpake_ecp_add3( &ctx->grp, &G,
mbedAustin 11:cada08fc8a70 571 &ctx->Xm1, &ctx->Xm2, &ctx->Xp1 ) );
mbedAustin 11:cada08fc8a70 572
mbedAustin 11:cada08fc8a70 573 /*
mbedAustin 11:cada08fc8a70 574 * struct {
mbedAustin 11:cada08fc8a70 575 * ECParameters curve_params; // only client reading server msg
mbedAustin 11:cada08fc8a70 576 * ECJPAKEKeyKP ecjpake_key_kp;
mbedAustin 11:cada08fc8a70 577 * } Client/ServerECJPAKEParams;
mbedAustin 11:cada08fc8a70 578 */
mbedAustin 11:cada08fc8a70 579 if( ctx->role == MBEDTLS_ECJPAKE_CLIENT )
mbedAustin 11:cada08fc8a70 580 {
mbedAustin 11:cada08fc8a70 581 MBEDTLS_MPI_CHK( mbedtls_ecp_tls_read_group( &grp, &p, len ) );
mbedAustin 11:cada08fc8a70 582 if( grp.id != ctx->grp.id )
mbedAustin 11:cada08fc8a70 583 {
mbedAustin 11:cada08fc8a70 584 ret = MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE;
mbedAustin 11:cada08fc8a70 585 goto cleanup;
mbedAustin 11:cada08fc8a70 586 }
mbedAustin 11:cada08fc8a70 587 }
mbedAustin 11:cada08fc8a70 588
mbedAustin 11:cada08fc8a70 589 MBEDTLS_MPI_CHK( ecjpake_kkp_read( ctx->md_info, &ctx->grp,
mbedAustin 11:cada08fc8a70 590 ctx->point_format,
mbedAustin 11:cada08fc8a70 591 &G, &ctx->Xp, ID_PEER, &p, end ) );
mbedAustin 11:cada08fc8a70 592
mbedAustin 11:cada08fc8a70 593 if( p != end )
mbedAustin 11:cada08fc8a70 594 {
mbedAustin 11:cada08fc8a70 595 ret = MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
mbedAustin 11:cada08fc8a70 596 goto cleanup;
mbedAustin 11:cada08fc8a70 597 }
mbedAustin 11:cada08fc8a70 598
mbedAustin 11:cada08fc8a70 599 cleanup:
mbedAustin 11:cada08fc8a70 600 mbedtls_ecp_group_free( &grp );
mbedAustin 11:cada08fc8a70 601 mbedtls_ecp_point_free( &G );
mbedAustin 11:cada08fc8a70 602
mbedAustin 11:cada08fc8a70 603 return( ret );
mbedAustin 11:cada08fc8a70 604 }
mbedAustin 11:cada08fc8a70 605
mbedAustin 11:cada08fc8a70 606 /*
mbedAustin 11:cada08fc8a70 607 * Compute R = +/- X * S mod N, taking care not to leak S
mbedAustin 11:cada08fc8a70 608 */
mbedAustin 11:cada08fc8a70 609 static int ecjpake_mul_secret( mbedtls_mpi *R, int sign,
mbedAustin 11:cada08fc8a70 610 const mbedtls_mpi *X,
mbedAustin 11:cada08fc8a70 611 const mbedtls_mpi *S,
mbedAustin 11:cada08fc8a70 612 const mbedtls_mpi *N,
mbedAustin 11:cada08fc8a70 613 int (*f_rng)(void *, unsigned char *, size_t),
mbedAustin 11:cada08fc8a70 614 void *p_rng )
mbedAustin 11:cada08fc8a70 615 {
mbedAustin 11:cada08fc8a70 616 int ret;
mbedAustin 11:cada08fc8a70 617 mbedtls_mpi b; /* Blinding value, then s + N * blinding */
mbedAustin 11:cada08fc8a70 618
mbedAustin 11:cada08fc8a70 619 mbedtls_mpi_init( &b );
mbedAustin 11:cada08fc8a70 620
mbedAustin 11:cada08fc8a70 621 /* b = s + rnd-128-bit * N */
mbedAustin 11:cada08fc8a70 622 MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( &b, 16, f_rng, p_rng ) );
mbedAustin 11:cada08fc8a70 623 MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &b, &b, N ) );
mbedAustin 11:cada08fc8a70 624 MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( &b, &b, S ) );
mbedAustin 11:cada08fc8a70 625
mbedAustin 11:cada08fc8a70 626 /* R = sign * X * b mod N */
mbedAustin 11:cada08fc8a70 627 MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( R, X, &b ) );
mbedAustin 11:cada08fc8a70 628 R->s *= sign;
mbedAustin 11:cada08fc8a70 629 MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( R, R, N ) );
mbedAustin 11:cada08fc8a70 630
mbedAustin 11:cada08fc8a70 631 cleanup:
mbedAustin 11:cada08fc8a70 632 mbedtls_mpi_free( &b );
mbedAustin 11:cada08fc8a70 633
mbedAustin 11:cada08fc8a70 634 return( ret );
mbedAustin 11:cada08fc8a70 635 }
mbedAustin 11:cada08fc8a70 636
mbedAustin 11:cada08fc8a70 637 /*
mbedAustin 11:cada08fc8a70 638 * Generate and write the second round message (S: 7.4.2.5, C: 7.4.2.6)
mbedAustin 11:cada08fc8a70 639 */
mbedAustin 11:cada08fc8a70 640 int mbedtls_ecjpake_write_round_two( mbedtls_ecjpake_context *ctx,
mbedAustin 11:cada08fc8a70 641 unsigned char *buf, size_t len, size_t *olen,
mbedAustin 11:cada08fc8a70 642 int (*f_rng)(void *, unsigned char *, size_t),
mbedAustin 11:cada08fc8a70 643 void *p_rng )
mbedAustin 11:cada08fc8a70 644 {
mbedAustin 11:cada08fc8a70 645 int ret;
mbedAustin 11:cada08fc8a70 646 mbedtls_ecp_point G; /* C: GA, S: GB */
mbedAustin 11:cada08fc8a70 647 mbedtls_ecp_point Xm; /* C: Xc, S: Xs */
mbedAustin 11:cada08fc8a70 648 mbedtls_mpi xm; /* C: xc, S: xs */
mbedAustin 11:cada08fc8a70 649 unsigned char *p = buf;
mbedAustin 11:cada08fc8a70 650 const unsigned char *end = buf + len;
mbedAustin 11:cada08fc8a70 651 size_t ec_len;
mbedAustin 11:cada08fc8a70 652
mbedAustin 11:cada08fc8a70 653 mbedtls_ecp_point_init( &G );
mbedAustin 11:cada08fc8a70 654 mbedtls_ecp_point_init( &Xm );
mbedAustin 11:cada08fc8a70 655 mbedtls_mpi_init( &xm );
mbedAustin 11:cada08fc8a70 656
mbedAustin 11:cada08fc8a70 657 /*
mbedAustin 11:cada08fc8a70 658 * First generate private/public key pair (S: 7.4.2.5.1, C: 7.4.2.6.1)
mbedAustin 11:cada08fc8a70 659 *
mbedAustin 11:cada08fc8a70 660 * Client: GA = X1 + X3 + X4 | xs = x2 * s | Xc = xc * GA
mbedAustin 11:cada08fc8a70 661 * Server: GB = X3 + X1 + X2 | xs = x4 * s | Xs = xs * GB
mbedAustin 11:cada08fc8a70 662 * Unified: G = Xm1 + Xp1 + Xp2 | xm = xm2 * s | Xm = xm * G
mbedAustin 11:cada08fc8a70 663 */
mbedAustin 11:cada08fc8a70 664 MBEDTLS_MPI_CHK( ecjpake_ecp_add3( &ctx->grp, &G,
mbedAustin 11:cada08fc8a70 665 &ctx->Xp1, &ctx->Xp2, &ctx->Xm1 ) );
mbedAustin 11:cada08fc8a70 666 MBEDTLS_MPI_CHK( ecjpake_mul_secret( &xm, 1, &ctx->xm2, &ctx->s,
mbedAustin 11:cada08fc8a70 667 &ctx->grp.N, f_rng, p_rng ) );
mbedAustin 11:cada08fc8a70 668 MBEDTLS_MPI_CHK( mbedtls_ecp_mul( &ctx->grp, &Xm, &xm, &G, f_rng, p_rng ) );
mbedAustin 11:cada08fc8a70 669
mbedAustin 11:cada08fc8a70 670 /*
mbedAustin 11:cada08fc8a70 671 * Now write things out
mbedAustin 11:cada08fc8a70 672 *
mbedAustin 11:cada08fc8a70 673 * struct {
mbedAustin 11:cada08fc8a70 674 * ECParameters curve_params; // only server writing its message
mbedAustin 11:cada08fc8a70 675 * ECJPAKEKeyKP ecjpake_key_kp;
mbedAustin 11:cada08fc8a70 676 * } Client/ServerECJPAKEParams;
mbedAustin 11:cada08fc8a70 677 */
mbedAustin 11:cada08fc8a70 678 if( ctx->role == MBEDTLS_ECJPAKE_SERVER )
mbedAustin 11:cada08fc8a70 679 {
mbedAustin 11:cada08fc8a70 680 if( end < p )
mbedAustin 11:cada08fc8a70 681 {
mbedAustin 11:cada08fc8a70 682 ret = MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL;
mbedAustin 11:cada08fc8a70 683 goto cleanup;
mbedAustin 11:cada08fc8a70 684 }
mbedAustin 11:cada08fc8a70 685 MBEDTLS_MPI_CHK( mbedtls_ecp_tls_write_group( &ctx->grp, &ec_len,
mbedAustin 11:cada08fc8a70 686 p, end - p ) );
mbedAustin 11:cada08fc8a70 687 p += ec_len;
mbedAustin 11:cada08fc8a70 688 }
mbedAustin 11:cada08fc8a70 689
mbedAustin 11:cada08fc8a70 690 if( end < p )
mbedAustin 11:cada08fc8a70 691 {
mbedAustin 11:cada08fc8a70 692 ret = MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL;
mbedAustin 11:cada08fc8a70 693 goto cleanup;
mbedAustin 11:cada08fc8a70 694 }
mbedAustin 11:cada08fc8a70 695 MBEDTLS_MPI_CHK( mbedtls_ecp_tls_write_point( &ctx->grp, &Xm,
mbedAustin 11:cada08fc8a70 696 ctx->point_format, &ec_len, p, end - p ) );
mbedAustin 11:cada08fc8a70 697 p += ec_len;
mbedAustin 11:cada08fc8a70 698
mbedAustin 11:cada08fc8a70 699 MBEDTLS_MPI_CHK( ecjpake_zkp_write( ctx->md_info, &ctx->grp,
mbedAustin 11:cada08fc8a70 700 ctx->point_format,
mbedAustin 11:cada08fc8a70 701 &G, &xm, &Xm, ID_MINE,
mbedAustin 11:cada08fc8a70 702 &p, end, f_rng, p_rng ) );
mbedAustin 11:cada08fc8a70 703
mbedAustin 11:cada08fc8a70 704 *olen = p - buf;
mbedAustin 11:cada08fc8a70 705
mbedAustin 11:cada08fc8a70 706 cleanup:
mbedAustin 11:cada08fc8a70 707 mbedtls_ecp_point_free( &G );
mbedAustin 11:cada08fc8a70 708 mbedtls_ecp_point_free( &Xm );
mbedAustin 11:cada08fc8a70 709 mbedtls_mpi_free( &xm );
mbedAustin 11:cada08fc8a70 710
mbedAustin 11:cada08fc8a70 711 return( ret );
mbedAustin 11:cada08fc8a70 712 }
mbedAustin 11:cada08fc8a70 713
mbedAustin 11:cada08fc8a70 714 /*
mbedAustin 11:cada08fc8a70 715 * Derive PMS (7.4.2.7 / 7.4.2.8)
mbedAustin 11:cada08fc8a70 716 */
mbedAustin 11:cada08fc8a70 717 int mbedtls_ecjpake_derive_secret( mbedtls_ecjpake_context *ctx,
mbedAustin 11:cada08fc8a70 718 unsigned char *buf, size_t len, size_t *olen,
mbedAustin 11:cada08fc8a70 719 int (*f_rng)(void *, unsigned char *, size_t),
mbedAustin 11:cada08fc8a70 720 void *p_rng )
mbedAustin 11:cada08fc8a70 721 {
mbedAustin 11:cada08fc8a70 722 int ret;
mbedAustin 11:cada08fc8a70 723 mbedtls_ecp_point K;
mbedAustin 11:cada08fc8a70 724 mbedtls_mpi m_xm2_s, one;
mbedAustin 11:cada08fc8a70 725 unsigned char kx[MBEDTLS_ECP_MAX_BYTES];
mbedAustin 11:cada08fc8a70 726 size_t x_bytes;
mbedAustin 11:cada08fc8a70 727
mbedAustin 11:cada08fc8a70 728 *olen = mbedtls_md_get_size( ctx->md_info );
mbedAustin 11:cada08fc8a70 729 if( len < *olen )
mbedAustin 11:cada08fc8a70 730 return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL );
mbedAustin 11:cada08fc8a70 731
mbedAustin 11:cada08fc8a70 732 mbedtls_ecp_point_init( &K );
mbedAustin 11:cada08fc8a70 733 mbedtls_mpi_init( &m_xm2_s );
mbedAustin 11:cada08fc8a70 734 mbedtls_mpi_init( &one );
mbedAustin 11:cada08fc8a70 735
mbedAustin 11:cada08fc8a70 736 MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &one, 1 ) );
mbedAustin 11:cada08fc8a70 737
mbedAustin 11:cada08fc8a70 738 /*
mbedAustin 11:cada08fc8a70 739 * Client: K = ( Xs - X4 * x2 * s ) * x2
mbedAustin 11:cada08fc8a70 740 * Server: K = ( Xc - X2 * x4 * s ) * x4
mbedAustin 11:cada08fc8a70 741 * Unified: K = ( Xp - Xp2 * xm2 * s ) * xm2
mbedAustin 11:cada08fc8a70 742 */
mbedAustin 11:cada08fc8a70 743 MBEDTLS_MPI_CHK( ecjpake_mul_secret( &m_xm2_s, -1, &ctx->xm2, &ctx->s,
mbedAustin 11:cada08fc8a70 744 &ctx->grp.N, f_rng, p_rng ) );
mbedAustin 11:cada08fc8a70 745 MBEDTLS_MPI_CHK( mbedtls_ecp_muladd( &ctx->grp, &K,
mbedAustin 11:cada08fc8a70 746 &one, &ctx->Xp,
mbedAustin 11:cada08fc8a70 747 &m_xm2_s, &ctx->Xp2 ) );
mbedAustin 11:cada08fc8a70 748 MBEDTLS_MPI_CHK( mbedtls_ecp_mul( &ctx->grp, &K, &ctx->xm2, &K,
mbedAustin 11:cada08fc8a70 749 f_rng, p_rng ) );
mbedAustin 11:cada08fc8a70 750
mbedAustin 11:cada08fc8a70 751 /* PMS = SHA-256( K.X ) */
mbedAustin 11:cada08fc8a70 752 x_bytes = ( ctx->grp.pbits + 7 ) / 8;
mbedAustin 11:cada08fc8a70 753 MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( &K.X, kx, x_bytes ) );
mbedAustin 11:cada08fc8a70 754 MBEDTLS_MPI_CHK( mbedtls_md( ctx->md_info, kx, x_bytes, buf ) );
mbedAustin 11:cada08fc8a70 755
mbedAustin 11:cada08fc8a70 756 cleanup:
mbedAustin 11:cada08fc8a70 757 mbedtls_ecp_point_free( &K );
mbedAustin 11:cada08fc8a70 758 mbedtls_mpi_free( &m_xm2_s );
mbedAustin 11:cada08fc8a70 759 mbedtls_mpi_free( &one );
mbedAustin 11:cada08fc8a70 760
mbedAustin 11:cada08fc8a70 761 return( ret );
mbedAustin 11:cada08fc8a70 762 }
mbedAustin 11:cada08fc8a70 763
mbedAustin 11:cada08fc8a70 764 #undef ID_MINE
mbedAustin 11:cada08fc8a70 765 #undef ID_PEER
mbedAustin 11:cada08fc8a70 766
mbedAustin 11:cada08fc8a70 767
mbedAustin 11:cada08fc8a70 768 #if defined(MBEDTLS_SELF_TEST)
mbedAustin 11:cada08fc8a70 769
mbedAustin 11:cada08fc8a70 770 #if defined(MBEDTLS_PLATFORM_C)
mbedAustin 11:cada08fc8a70 771 #include "mbedtls/platform.h"
mbedAustin 11:cada08fc8a70 772 #else
mbedAustin 11:cada08fc8a70 773 #include <stdio.h>
mbedAustin 11:cada08fc8a70 774 #define mbedtls_printf printf
mbedAustin 11:cada08fc8a70 775 #endif
mbedAustin 11:cada08fc8a70 776
mbedAustin 11:cada08fc8a70 777 #if !defined(MBEDTLS_ECP_DP_SECP256R1_ENABLED) || \
mbedAustin 11:cada08fc8a70 778 !defined(MBEDTLS_SHA256_C)
mbedAustin 11:cada08fc8a70 779 int mbedtls_ecjpake_self_test( int verbose )
mbedAustin 11:cada08fc8a70 780 {
mbedAustin 11:cada08fc8a70 781 (void) verbose;
mbedAustin 11:cada08fc8a70 782 return( 0 );
mbedAustin 11:cada08fc8a70 783 }
mbedAustin 11:cada08fc8a70 784 #else
mbedAustin 11:cada08fc8a70 785
mbedAustin 11:cada08fc8a70 786 static const unsigned char ecjpake_test_password[] = {
mbedAustin 11:cada08fc8a70 787 0x74, 0x68, 0x72, 0x65, 0x61, 0x64, 0x6a, 0x70, 0x61, 0x6b, 0x65, 0x74,
mbedAustin 11:cada08fc8a70 788 0x65, 0x73, 0x74
mbedAustin 11:cada08fc8a70 789 };
mbedAustin 11:cada08fc8a70 790
mbedAustin 11:cada08fc8a70 791 static const unsigned char ecjpake_test_x1[] = {
mbedAustin 11:cada08fc8a70 792 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c,
mbedAustin 11:cada08fc8a70 793 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18,
mbedAustin 11:cada08fc8a70 794 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x21
mbedAustin 11:cada08fc8a70 795 };
mbedAustin 11:cada08fc8a70 796
mbedAustin 11:cada08fc8a70 797 static const unsigned char ecjpake_test_x2[] = {
mbedAustin 11:cada08fc8a70 798 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c,
mbedAustin 11:cada08fc8a70 799 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
mbedAustin 11:cada08fc8a70 800 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x81
mbedAustin 11:cada08fc8a70 801 };
mbedAustin 11:cada08fc8a70 802
mbedAustin 11:cada08fc8a70 803 static const unsigned char ecjpake_test_x3[] = {
mbedAustin 11:cada08fc8a70 804 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c,
mbedAustin 11:cada08fc8a70 805 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
mbedAustin 11:cada08fc8a70 806 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x81
mbedAustin 11:cada08fc8a70 807 };
mbedAustin 11:cada08fc8a70 808
mbedAustin 11:cada08fc8a70 809 static const unsigned char ecjpake_test_x4[] = {
mbedAustin 11:cada08fc8a70 810 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc,
mbedAustin 11:cada08fc8a70 811 0xcd, 0xce, 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8,
mbedAustin 11:cada08fc8a70 812 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, 0xe1
mbedAustin 11:cada08fc8a70 813 };
mbedAustin 11:cada08fc8a70 814
mbedAustin 11:cada08fc8a70 815 static const unsigned char ecjpake_test_cli_one[] = {
mbedAustin 11:cada08fc8a70 816 0x41, 0x04, 0xac, 0xcf, 0x01, 0x06, 0xef, 0x85, 0x8f, 0xa2, 0xd9, 0x19,
mbedAustin 11:cada08fc8a70 817 0x33, 0x13, 0x46, 0x80, 0x5a, 0x78, 0xb5, 0x8b, 0xba, 0xd0, 0xb8, 0x44,
mbedAustin 11:cada08fc8a70 818 0xe5, 0xc7, 0x89, 0x28, 0x79, 0x14, 0x61, 0x87, 0xdd, 0x26, 0x66, 0xad,
mbedAustin 11:cada08fc8a70 819 0xa7, 0x81, 0xbb, 0x7f, 0x11, 0x13, 0x72, 0x25, 0x1a, 0x89, 0x10, 0x62,
mbedAustin 11:cada08fc8a70 820 0x1f, 0x63, 0x4d, 0xf1, 0x28, 0xac, 0x48, 0xe3, 0x81, 0xfd, 0x6e, 0xf9,
mbedAustin 11:cada08fc8a70 821 0x06, 0x07, 0x31, 0xf6, 0x94, 0xa4, 0x41, 0x04, 0x1d, 0xd0, 0xbd, 0x5d,
mbedAustin 11:cada08fc8a70 822 0x45, 0x66, 0xc9, 0xbe, 0xd9, 0xce, 0x7d, 0xe7, 0x01, 0xb5, 0xe8, 0x2e,
mbedAustin 11:cada08fc8a70 823 0x08, 0xe8, 0x4b, 0x73, 0x04, 0x66, 0x01, 0x8a, 0xb9, 0x03, 0xc7, 0x9e,
mbedAustin 11:cada08fc8a70 824 0xb9, 0x82, 0x17, 0x22, 0x36, 0xc0, 0xc1, 0x72, 0x8a, 0xe4, 0xbf, 0x73,
mbedAustin 11:cada08fc8a70 825 0x61, 0x0d, 0x34, 0xde, 0x44, 0x24, 0x6e, 0xf3, 0xd9, 0xc0, 0x5a, 0x22,
mbedAustin 11:cada08fc8a70 826 0x36, 0xfb, 0x66, 0xa6, 0x58, 0x3d, 0x74, 0x49, 0x30, 0x8b, 0xab, 0xce,
mbedAustin 11:cada08fc8a70 827 0x20, 0x72, 0xfe, 0x16, 0x66, 0x29, 0x92, 0xe9, 0x23, 0x5c, 0x25, 0x00,
mbedAustin 11:cada08fc8a70 828 0x2f, 0x11, 0xb1, 0x50, 0x87, 0xb8, 0x27, 0x38, 0xe0, 0x3c, 0x94, 0x5b,
mbedAustin 11:cada08fc8a70 829 0xf7, 0xa2, 0x99, 0x5d, 0xda, 0x1e, 0x98, 0x34, 0x58, 0x41, 0x04, 0x7e,
mbedAustin 11:cada08fc8a70 830 0xa6, 0xe3, 0xa4, 0x48, 0x70, 0x37, 0xa9, 0xe0, 0xdb, 0xd7, 0x92, 0x62,
mbedAustin 11:cada08fc8a70 831 0xb2, 0xcc, 0x27, 0x3e, 0x77, 0x99, 0x30, 0xfc, 0x18, 0x40, 0x9a, 0xc5,
mbedAustin 11:cada08fc8a70 832 0x36, 0x1c, 0x5f, 0xe6, 0x69, 0xd7, 0x02, 0xe1, 0x47, 0x79, 0x0a, 0xeb,
mbedAustin 11:cada08fc8a70 833 0x4c, 0xe7, 0xfd, 0x65, 0x75, 0xab, 0x0f, 0x6c, 0x7f, 0xd1, 0xc3, 0x35,
mbedAustin 11:cada08fc8a70 834 0x93, 0x9a, 0xa8, 0x63, 0xba, 0x37, 0xec, 0x91, 0xb7, 0xe3, 0x2b, 0xb0,
mbedAustin 11:cada08fc8a70 835 0x13, 0xbb, 0x2b, 0x41, 0x04, 0xa4, 0x95, 0x58, 0xd3, 0x2e, 0xd1, 0xeb,
mbedAustin 11:cada08fc8a70 836 0xfc, 0x18, 0x16, 0xaf, 0x4f, 0xf0, 0x9b, 0x55, 0xfc, 0xb4, 0xca, 0x47,
mbedAustin 11:cada08fc8a70 837 0xb2, 0xa0, 0x2d, 0x1e, 0x7c, 0xaf, 0x11, 0x79, 0xea, 0x3f, 0xe1, 0x39,
mbedAustin 11:cada08fc8a70 838 0x5b, 0x22, 0xb8, 0x61, 0x96, 0x40, 0x16, 0xfa, 0xba, 0xf7, 0x2c, 0x97,
mbedAustin 11:cada08fc8a70 839 0x56, 0x95, 0xd9, 0x3d, 0x4d, 0xf0, 0xe5, 0x19, 0x7f, 0xe9, 0xf0, 0x40,
mbedAustin 11:cada08fc8a70 840 0x63, 0x4e, 0xd5, 0x97, 0x64, 0x93, 0x77, 0x87, 0xbe, 0x20, 0xbc, 0x4d,
mbedAustin 11:cada08fc8a70 841 0xee, 0xbb, 0xf9, 0xb8, 0xd6, 0x0a, 0x33, 0x5f, 0x04, 0x6c, 0xa3, 0xaa,
mbedAustin 11:cada08fc8a70 842 0x94, 0x1e, 0x45, 0x86, 0x4c, 0x7c, 0xad, 0xef, 0x9c, 0xf7, 0x5b, 0x3d,
mbedAustin 11:cada08fc8a70 843 0x8b, 0x01, 0x0e, 0x44, 0x3e, 0xf0
mbedAustin 11:cada08fc8a70 844 };
mbedAustin 11:cada08fc8a70 845
mbedAustin 11:cada08fc8a70 846 static const unsigned char ecjpake_test_srv_one[] = {
mbedAustin 11:cada08fc8a70 847 0x41, 0x04, 0x7e, 0xa6, 0xe3, 0xa4, 0x48, 0x70, 0x37, 0xa9, 0xe0, 0xdb,
mbedAustin 11:cada08fc8a70 848 0xd7, 0x92, 0x62, 0xb2, 0xcc, 0x27, 0x3e, 0x77, 0x99, 0x30, 0xfc, 0x18,
mbedAustin 11:cada08fc8a70 849 0x40, 0x9a, 0xc5, 0x36, 0x1c, 0x5f, 0xe6, 0x69, 0xd7, 0x02, 0xe1, 0x47,
mbedAustin 11:cada08fc8a70 850 0x79, 0x0a, 0xeb, 0x4c, 0xe7, 0xfd, 0x65, 0x75, 0xab, 0x0f, 0x6c, 0x7f,
mbedAustin 11:cada08fc8a70 851 0xd1, 0xc3, 0x35, 0x93, 0x9a, 0xa8, 0x63, 0xba, 0x37, 0xec, 0x91, 0xb7,
mbedAustin 11:cada08fc8a70 852 0xe3, 0x2b, 0xb0, 0x13, 0xbb, 0x2b, 0x41, 0x04, 0x09, 0xf8, 0x5b, 0x3d,
mbedAustin 11:cada08fc8a70 853 0x20, 0xeb, 0xd7, 0x88, 0x5c, 0xe4, 0x64, 0xc0, 0x8d, 0x05, 0x6d, 0x64,
mbedAustin 11:cada08fc8a70 854 0x28, 0xfe, 0x4d, 0xd9, 0x28, 0x7a, 0xa3, 0x65, 0xf1, 0x31, 0xf4, 0x36,
mbedAustin 11:cada08fc8a70 855 0x0f, 0xf3, 0x86, 0xd8, 0x46, 0x89, 0x8b, 0xc4, 0xb4, 0x15, 0x83, 0xc2,
mbedAustin 11:cada08fc8a70 856 0xa5, 0x19, 0x7f, 0x65, 0xd7, 0x87, 0x42, 0x74, 0x6c, 0x12, 0xa5, 0xec,
mbedAustin 11:cada08fc8a70 857 0x0a, 0x4f, 0xfe, 0x2f, 0x27, 0x0a, 0x75, 0x0a, 0x1d, 0x8f, 0xb5, 0x16,
mbedAustin 11:cada08fc8a70 858 0x20, 0x93, 0x4d, 0x74, 0xeb, 0x43, 0xe5, 0x4d, 0xf4, 0x24, 0xfd, 0x96,
mbedAustin 11:cada08fc8a70 859 0x30, 0x6c, 0x01, 0x17, 0xbf, 0x13, 0x1a, 0xfa, 0xbf, 0x90, 0xa9, 0xd3,
mbedAustin 11:cada08fc8a70 860 0x3d, 0x11, 0x98, 0xd9, 0x05, 0x19, 0x37, 0x35, 0x14, 0x41, 0x04, 0x19,
mbedAustin 11:cada08fc8a70 861 0x0a, 0x07, 0x70, 0x0f, 0xfa, 0x4b, 0xe6, 0xae, 0x1d, 0x79, 0xee, 0x0f,
mbedAustin 11:cada08fc8a70 862 0x06, 0xae, 0xb5, 0x44, 0xcd, 0x5a, 0xdd, 0xaa, 0xbe, 0xdf, 0x70, 0xf8,
mbedAustin 11:cada08fc8a70 863 0x62, 0x33, 0x21, 0x33, 0x2c, 0x54, 0xf3, 0x55, 0xf0, 0xfb, 0xfe, 0xc7,
mbedAustin 11:cada08fc8a70 864 0x83, 0xed, 0x35, 0x9e, 0x5d, 0x0b, 0xf7, 0x37, 0x7a, 0x0f, 0xc4, 0xea,
mbedAustin 11:cada08fc8a70 865 0x7a, 0xce, 0x47, 0x3c, 0x9c, 0x11, 0x2b, 0x41, 0xcc, 0xd4, 0x1a, 0xc5,
mbedAustin 11:cada08fc8a70 866 0x6a, 0x56, 0x12, 0x41, 0x04, 0x36, 0x0a, 0x1c, 0xea, 0x33, 0xfc, 0xe6,
mbedAustin 11:cada08fc8a70 867 0x41, 0x15, 0x64, 0x58, 0xe0, 0xa4, 0xea, 0xc2, 0x19, 0xe9, 0x68, 0x31,
mbedAustin 11:cada08fc8a70 868 0xe6, 0xae, 0xbc, 0x88, 0xb3, 0xf3, 0x75, 0x2f, 0x93, 0xa0, 0x28, 0x1d,
mbedAustin 11:cada08fc8a70 869 0x1b, 0xf1, 0xfb, 0x10, 0x60, 0x51, 0xdb, 0x96, 0x94, 0xa8, 0xd6, 0xe8,
mbedAustin 11:cada08fc8a70 870 0x62, 0xa5, 0xef, 0x13, 0x24, 0xa3, 0xd9, 0xe2, 0x78, 0x94, 0xf1, 0xee,
mbedAustin 11:cada08fc8a70 871 0x4f, 0x7c, 0x59, 0x19, 0x99, 0x65, 0xa8, 0xdd, 0x4a, 0x20, 0x91, 0x84,
mbedAustin 11:cada08fc8a70 872 0x7d, 0x2d, 0x22, 0xdf, 0x3e, 0xe5, 0x5f, 0xaa, 0x2a, 0x3f, 0xb3, 0x3f,
mbedAustin 11:cada08fc8a70 873 0xd2, 0xd1, 0xe0, 0x55, 0xa0, 0x7a, 0x7c, 0x61, 0xec, 0xfb, 0x8d, 0x80,
mbedAustin 11:cada08fc8a70 874 0xec, 0x00, 0xc2, 0xc9, 0xeb, 0x12
mbedAustin 11:cada08fc8a70 875 };
mbedAustin 11:cada08fc8a70 876
mbedAustin 11:cada08fc8a70 877 static const unsigned char ecjpake_test_srv_two[] = {
mbedAustin 11:cada08fc8a70 878 0x03, 0x00, 0x17, 0x41, 0x04, 0x0f, 0xb2, 0x2b, 0x1d, 0x5d, 0x11, 0x23,
mbedAustin 11:cada08fc8a70 879 0xe0, 0xef, 0x9f, 0xeb, 0x9d, 0x8a, 0x2e, 0x59, 0x0a, 0x1f, 0x4d, 0x7c,
mbedAustin 11:cada08fc8a70 880 0xed, 0x2c, 0x2b, 0x06, 0x58, 0x6e, 0x8f, 0x2a, 0x16, 0xd4, 0xeb, 0x2f,
mbedAustin 11:cada08fc8a70 881 0xda, 0x43, 0x28, 0xa2, 0x0b, 0x07, 0xd8, 0xfd, 0x66, 0x76, 0x54, 0xca,
mbedAustin 11:cada08fc8a70 882 0x18, 0xc5, 0x4e, 0x32, 0xa3, 0x33, 0xa0, 0x84, 0x54, 0x51, 0xe9, 0x26,
mbedAustin 11:cada08fc8a70 883 0xee, 0x88, 0x04, 0xfd, 0x7a, 0xf0, 0xaa, 0xa7, 0xa6, 0x41, 0x04, 0x55,
mbedAustin 11:cada08fc8a70 884 0x16, 0xea, 0x3e, 0x54, 0xa0, 0xd5, 0xd8, 0xb2, 0xce, 0x78, 0x6b, 0x38,
mbedAustin 11:cada08fc8a70 885 0xd3, 0x83, 0x37, 0x00, 0x29, 0xa5, 0xdb, 0xe4, 0x45, 0x9c, 0x9d, 0xd6,
mbedAustin 11:cada08fc8a70 886 0x01, 0xb4, 0x08, 0xa2, 0x4a, 0xe6, 0x46, 0x5c, 0x8a, 0xc9, 0x05, 0xb9,
mbedAustin 11:cada08fc8a70 887 0xeb, 0x03, 0xb5, 0xd3, 0x69, 0x1c, 0x13, 0x9e, 0xf8, 0x3f, 0x1c, 0xd4,
mbedAustin 11:cada08fc8a70 888 0x20, 0x0f, 0x6c, 0x9c, 0xd4, 0xec, 0x39, 0x22, 0x18, 0xa5, 0x9e, 0xd2,
mbedAustin 11:cada08fc8a70 889 0x43, 0xd3, 0xc8, 0x20, 0xff, 0x72, 0x4a, 0x9a, 0x70, 0xb8, 0x8c, 0xb8,
mbedAustin 11:cada08fc8a70 890 0x6f, 0x20, 0xb4, 0x34, 0xc6, 0x86, 0x5a, 0xa1, 0xcd, 0x79, 0x06, 0xdd,
mbedAustin 11:cada08fc8a70 891 0x7c, 0x9b, 0xce, 0x35, 0x25, 0xf5, 0x08, 0x27, 0x6f, 0x26, 0x83, 0x6c
mbedAustin 11:cada08fc8a70 892 };
mbedAustin 11:cada08fc8a70 893
mbedAustin 11:cada08fc8a70 894 static const unsigned char ecjpake_test_cli_two[] = {
mbedAustin 11:cada08fc8a70 895 0x41, 0x04, 0x69, 0xd5, 0x4e, 0xe8, 0x5e, 0x90, 0xce, 0x3f, 0x12, 0x46,
mbedAustin 11:cada08fc8a70 896 0x74, 0x2d, 0xe5, 0x07, 0xe9, 0x39, 0xe8, 0x1d, 0x1d, 0xc1, 0xc5, 0xcb,
mbedAustin 11:cada08fc8a70 897 0x98, 0x8b, 0x58, 0xc3, 0x10, 0xc9, 0xfd, 0xd9, 0x52, 0x4d, 0x93, 0x72,
mbedAustin 11:cada08fc8a70 898 0x0b, 0x45, 0x54, 0x1c, 0x83, 0xee, 0x88, 0x41, 0x19, 0x1d, 0xa7, 0xce,
mbedAustin 11:cada08fc8a70 899 0xd8, 0x6e, 0x33, 0x12, 0xd4, 0x36, 0x23, 0xc1, 0xd6, 0x3e, 0x74, 0x98,
mbedAustin 11:cada08fc8a70 900 0x9a, 0xba, 0x4a, 0xff, 0xd1, 0xee, 0x41, 0x04, 0x07, 0x7e, 0x8c, 0x31,
mbedAustin 11:cada08fc8a70 901 0xe2, 0x0e, 0x6b, 0xed, 0xb7, 0x60, 0xc1, 0x35, 0x93, 0xe6, 0x9f, 0x15,
mbedAustin 11:cada08fc8a70 902 0xbe, 0x85, 0xc2, 0x7d, 0x68, 0xcd, 0x09, 0xcc, 0xb8, 0xc4, 0x18, 0x36,
mbedAustin 11:cada08fc8a70 903 0x08, 0x91, 0x7c, 0x5c, 0x3d, 0x40, 0x9f, 0xac, 0x39, 0xfe, 0xfe, 0xe8,
mbedAustin 11:cada08fc8a70 904 0x2f, 0x72, 0x92, 0xd3, 0x6f, 0x0d, 0x23, 0xe0, 0x55, 0x91, 0x3f, 0x45,
mbedAustin 11:cada08fc8a70 905 0xa5, 0x2b, 0x85, 0xdd, 0x8a, 0x20, 0x52, 0xe9, 0xe1, 0x29, 0xbb, 0x4d,
mbedAustin 11:cada08fc8a70 906 0x20, 0x0f, 0x01, 0x1f, 0x19, 0x48, 0x35, 0x35, 0xa6, 0xe8, 0x9a, 0x58,
mbedAustin 11:cada08fc8a70 907 0x0c, 0x9b, 0x00, 0x03, 0xba, 0xf2, 0x14, 0x62, 0xec, 0xe9, 0x1a, 0x82,
mbedAustin 11:cada08fc8a70 908 0xcc, 0x38, 0xdb, 0xdc, 0xae, 0x60, 0xd9, 0xc5, 0x4c
mbedAustin 11:cada08fc8a70 909 };
mbedAustin 11:cada08fc8a70 910
mbedAustin 11:cada08fc8a70 911 static const unsigned char ecjpake_test_pms[] = {
mbedAustin 11:cada08fc8a70 912 0xf3, 0xd4, 0x7f, 0x59, 0x98, 0x44, 0xdb, 0x92, 0xa5, 0x69, 0xbb, 0xe7,
mbedAustin 11:cada08fc8a70 913 0x98, 0x1e, 0x39, 0xd9, 0x31, 0xfd, 0x74, 0x3b, 0xf2, 0x2e, 0x98, 0xf9,
mbedAustin 11:cada08fc8a70 914 0xb4, 0x38, 0xf7, 0x19, 0xd3, 0xc4, 0xf3, 0x51
mbedAustin 11:cada08fc8a70 915 };
mbedAustin 11:cada08fc8a70 916
mbedAustin 11:cada08fc8a70 917 /* Load my private keys and generate the correponding public keys */
mbedAustin 11:cada08fc8a70 918 static int ecjpake_test_load( mbedtls_ecjpake_context *ctx,
mbedAustin 11:cada08fc8a70 919 const unsigned char *xm1, size_t len1,
mbedAustin 11:cada08fc8a70 920 const unsigned char *xm2, size_t len2 )
mbedAustin 11:cada08fc8a70 921 {
mbedAustin 11:cada08fc8a70 922 int ret;
mbedAustin 11:cada08fc8a70 923
mbedAustin 11:cada08fc8a70 924 MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( &ctx->xm1, xm1, len1 ) );
mbedAustin 11:cada08fc8a70 925 MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( &ctx->xm2, xm2, len2 ) );
mbedAustin 11:cada08fc8a70 926 MBEDTLS_MPI_CHK( mbedtls_ecp_mul( &ctx->grp, &ctx->Xm1, &ctx->xm1,
mbedAustin 11:cada08fc8a70 927 &ctx->grp.G, NULL, NULL ) );
mbedAustin 11:cada08fc8a70 928 MBEDTLS_MPI_CHK( mbedtls_ecp_mul( &ctx->grp, &ctx->Xm2, &ctx->xm2,
mbedAustin 11:cada08fc8a70 929 &ctx->grp.G, NULL, NULL ) );
mbedAustin 11:cada08fc8a70 930
mbedAustin 11:cada08fc8a70 931 cleanup:
mbedAustin 11:cada08fc8a70 932 return( ret );
mbedAustin 11:cada08fc8a70 933 }
mbedAustin 11:cada08fc8a70 934
mbedAustin 11:cada08fc8a70 935 /* For tests we don't need a secure RNG;
mbedAustin 11:cada08fc8a70 936 * use the LGC from Numerical Recipes for simplicity */
mbedAustin 11:cada08fc8a70 937 static int ecjpake_lgc( void *p, unsigned char *out, size_t len )
mbedAustin 11:cada08fc8a70 938 {
mbedAustin 11:cada08fc8a70 939 static uint32_t x = 42;
mbedAustin 11:cada08fc8a70 940 (void) p;
mbedAustin 11:cada08fc8a70 941
mbedAustin 11:cada08fc8a70 942 while( len > 0 )
mbedAustin 11:cada08fc8a70 943 {
mbedAustin 11:cada08fc8a70 944 size_t use_len = len > 4 ? 4 : len;
mbedAustin 11:cada08fc8a70 945 x = 1664525 * x + 1013904223;
mbedAustin 11:cada08fc8a70 946 memcpy( out, &x, use_len );
mbedAustin 11:cada08fc8a70 947 out += use_len;
mbedAustin 11:cada08fc8a70 948 len -= use_len;
mbedAustin 11:cada08fc8a70 949 }
mbedAustin 11:cada08fc8a70 950
mbedAustin 11:cada08fc8a70 951 return( 0 );
mbedAustin 11:cada08fc8a70 952 }
mbedAustin 11:cada08fc8a70 953
mbedAustin 11:cada08fc8a70 954 #define TEST_ASSERT( x ) \
mbedAustin 11:cada08fc8a70 955 do { \
mbedAustin 11:cada08fc8a70 956 if( x ) \
mbedAustin 11:cada08fc8a70 957 ret = 0; \
mbedAustin 11:cada08fc8a70 958 else \
mbedAustin 11:cada08fc8a70 959 { \
mbedAustin 11:cada08fc8a70 960 ret = 1; \
mbedAustin 11:cada08fc8a70 961 goto cleanup; \
mbedAustin 11:cada08fc8a70 962 } \
mbedAustin 11:cada08fc8a70 963 } while( 0 )
mbedAustin 11:cada08fc8a70 964
mbedAustin 11:cada08fc8a70 965 /*
mbedAustin 11:cada08fc8a70 966 * Checkup routine
mbedAustin 11:cada08fc8a70 967 */
mbedAustin 11:cada08fc8a70 968 int mbedtls_ecjpake_self_test( int verbose )
mbedAustin 11:cada08fc8a70 969 {
mbedAustin 11:cada08fc8a70 970 int ret;
mbedAustin 11:cada08fc8a70 971 mbedtls_ecjpake_context cli;
mbedAustin 11:cada08fc8a70 972 mbedtls_ecjpake_context srv;
mbedAustin 11:cada08fc8a70 973 unsigned char buf[512], pms[32];
mbedAustin 11:cada08fc8a70 974 size_t len, pmslen;
mbedAustin 11:cada08fc8a70 975
mbedAustin 11:cada08fc8a70 976 mbedtls_ecjpake_init( &cli );
mbedAustin 11:cada08fc8a70 977 mbedtls_ecjpake_init( &srv );
mbedAustin 11:cada08fc8a70 978
mbedAustin 11:cada08fc8a70 979 if( verbose != 0 )
mbedAustin 11:cada08fc8a70 980 mbedtls_printf( " ECJPAKE test #0 (setup): " );
mbedAustin 11:cada08fc8a70 981
mbedAustin 11:cada08fc8a70 982 TEST_ASSERT( mbedtls_ecjpake_setup( &cli, MBEDTLS_ECJPAKE_CLIENT,
mbedAustin 11:cada08fc8a70 983 MBEDTLS_MD_SHA256, MBEDTLS_ECP_DP_SECP256R1,
mbedAustin 11:cada08fc8a70 984 ecjpake_test_password,
mbedAustin 11:cada08fc8a70 985 sizeof( ecjpake_test_password ) ) == 0 );
mbedAustin 11:cada08fc8a70 986
mbedAustin 11:cada08fc8a70 987 TEST_ASSERT( mbedtls_ecjpake_setup( &srv, MBEDTLS_ECJPAKE_SERVER,
mbedAustin 11:cada08fc8a70 988 MBEDTLS_MD_SHA256, MBEDTLS_ECP_DP_SECP256R1,
mbedAustin 11:cada08fc8a70 989 ecjpake_test_password,
mbedAustin 11:cada08fc8a70 990 sizeof( ecjpake_test_password ) ) == 0 );
mbedAustin 11:cada08fc8a70 991
mbedAustin 11:cada08fc8a70 992 if( verbose != 0 )
mbedAustin 11:cada08fc8a70 993 mbedtls_printf( "passed\n" );
mbedAustin 11:cada08fc8a70 994
mbedAustin 11:cada08fc8a70 995 if( verbose != 0 )
mbedAustin 11:cada08fc8a70 996 mbedtls_printf( " ECJPAKE test #1 (random handshake): " );
mbedAustin 11:cada08fc8a70 997
mbedAustin 11:cada08fc8a70 998 TEST_ASSERT( mbedtls_ecjpake_write_round_one( &cli,
mbedAustin 11:cada08fc8a70 999 buf, sizeof( buf ), &len, ecjpake_lgc, NULL ) == 0 );
mbedAustin 11:cada08fc8a70 1000
mbedAustin 11:cada08fc8a70 1001 TEST_ASSERT( mbedtls_ecjpake_read_round_one( &srv, buf, len ) == 0 );
mbedAustin 11:cada08fc8a70 1002
mbedAustin 11:cada08fc8a70 1003 TEST_ASSERT( mbedtls_ecjpake_write_round_one( &srv,
mbedAustin 11:cada08fc8a70 1004 buf, sizeof( buf ), &len, ecjpake_lgc, NULL ) == 0 );
mbedAustin 11:cada08fc8a70 1005
mbedAustin 11:cada08fc8a70 1006 TEST_ASSERT( mbedtls_ecjpake_read_round_one( &cli, buf, len ) == 0 );
mbedAustin 11:cada08fc8a70 1007
mbedAustin 11:cada08fc8a70 1008 TEST_ASSERT( mbedtls_ecjpake_write_round_two( &srv,
mbedAustin 11:cada08fc8a70 1009 buf, sizeof( buf ), &len, ecjpake_lgc, NULL ) == 0 );
mbedAustin 11:cada08fc8a70 1010
mbedAustin 11:cada08fc8a70 1011 TEST_ASSERT( mbedtls_ecjpake_read_round_two( &cli, buf, len ) == 0 );
mbedAustin 11:cada08fc8a70 1012
mbedAustin 11:cada08fc8a70 1013 TEST_ASSERT( mbedtls_ecjpake_derive_secret( &cli,
mbedAustin 11:cada08fc8a70 1014 pms, sizeof( pms ), &pmslen, ecjpake_lgc, NULL ) == 0 );
mbedAustin 11:cada08fc8a70 1015
mbedAustin 11:cada08fc8a70 1016 TEST_ASSERT( mbedtls_ecjpake_write_round_two( &cli,
mbedAustin 11:cada08fc8a70 1017 buf, sizeof( buf ), &len, ecjpake_lgc, NULL ) == 0 );
mbedAustin 11:cada08fc8a70 1018
mbedAustin 11:cada08fc8a70 1019 TEST_ASSERT( mbedtls_ecjpake_read_round_two( &srv, buf, len ) == 0 );
mbedAustin 11:cada08fc8a70 1020
mbedAustin 11:cada08fc8a70 1021 TEST_ASSERT( mbedtls_ecjpake_derive_secret( &srv,
mbedAustin 11:cada08fc8a70 1022 buf, sizeof( buf ), &len, ecjpake_lgc, NULL ) == 0 );
mbedAustin 11:cada08fc8a70 1023
mbedAustin 11:cada08fc8a70 1024 TEST_ASSERT( len == pmslen );
mbedAustin 11:cada08fc8a70 1025 TEST_ASSERT( memcmp( buf, pms, len ) == 0 );
mbedAustin 11:cada08fc8a70 1026
mbedAustin 11:cada08fc8a70 1027 if( verbose != 0 )
mbedAustin 11:cada08fc8a70 1028 mbedtls_printf( "passed\n" );
mbedAustin 11:cada08fc8a70 1029
mbedAustin 11:cada08fc8a70 1030 if( verbose != 0 )
mbedAustin 11:cada08fc8a70 1031 mbedtls_printf( " ECJPAKE test #2 (reference handshake): " );
mbedAustin 11:cada08fc8a70 1032
mbedAustin 11:cada08fc8a70 1033 /* Simulate generation of round one */
mbedAustin 11:cada08fc8a70 1034 MBEDTLS_MPI_CHK( ecjpake_test_load( &cli,
mbedAustin 11:cada08fc8a70 1035 ecjpake_test_x1, sizeof( ecjpake_test_x1 ),
mbedAustin 11:cada08fc8a70 1036 ecjpake_test_x2, sizeof( ecjpake_test_x2 ) ) );
mbedAustin 11:cada08fc8a70 1037
mbedAustin 11:cada08fc8a70 1038 MBEDTLS_MPI_CHK( ecjpake_test_load( &srv,
mbedAustin 11:cada08fc8a70 1039 ecjpake_test_x3, sizeof( ecjpake_test_x3 ),
mbedAustin 11:cada08fc8a70 1040 ecjpake_test_x4, sizeof( ecjpake_test_x4 ) ) );
mbedAustin 11:cada08fc8a70 1041
mbedAustin 11:cada08fc8a70 1042 /* Read round one */
mbedAustin 11:cada08fc8a70 1043 TEST_ASSERT( mbedtls_ecjpake_read_round_one( &srv,
mbedAustin 11:cada08fc8a70 1044 ecjpake_test_cli_one,
mbedAustin 11:cada08fc8a70 1045 sizeof( ecjpake_test_cli_one ) ) == 0 );
mbedAustin 11:cada08fc8a70 1046
mbedAustin 11:cada08fc8a70 1047 TEST_ASSERT( mbedtls_ecjpake_read_round_one( &cli,
mbedAustin 11:cada08fc8a70 1048 ecjpake_test_srv_one,
mbedAustin 11:cada08fc8a70 1049 sizeof( ecjpake_test_srv_one ) ) == 0 );
mbedAustin 11:cada08fc8a70 1050
mbedAustin 11:cada08fc8a70 1051 /* Skip generation of round two, read round two */
mbedAustin 11:cada08fc8a70 1052 TEST_ASSERT( mbedtls_ecjpake_read_round_two( &cli,
mbedAustin 11:cada08fc8a70 1053 ecjpake_test_srv_two,
mbedAustin 11:cada08fc8a70 1054 sizeof( ecjpake_test_srv_two ) ) == 0 );
mbedAustin 11:cada08fc8a70 1055
mbedAustin 11:cada08fc8a70 1056 TEST_ASSERT( mbedtls_ecjpake_read_round_two( &srv,
mbedAustin 11:cada08fc8a70 1057 ecjpake_test_cli_two,
mbedAustin 11:cada08fc8a70 1058 sizeof( ecjpake_test_cli_two ) ) == 0 );
mbedAustin 11:cada08fc8a70 1059
mbedAustin 11:cada08fc8a70 1060 /* Server derives PMS */
mbedAustin 11:cada08fc8a70 1061 TEST_ASSERT( mbedtls_ecjpake_derive_secret( &srv,
mbedAustin 11:cada08fc8a70 1062 buf, sizeof( buf ), &len, ecjpake_lgc, NULL ) == 0 );
mbedAustin 11:cada08fc8a70 1063
mbedAustin 11:cada08fc8a70 1064 TEST_ASSERT( len == sizeof( ecjpake_test_pms ) );
mbedAustin 11:cada08fc8a70 1065 TEST_ASSERT( memcmp( buf, ecjpake_test_pms, len ) == 0 );
mbedAustin 11:cada08fc8a70 1066
mbedAustin 11:cada08fc8a70 1067 memset( buf, 0, len ); /* Avoid interferences with next step */
mbedAustin 11:cada08fc8a70 1068
mbedAustin 11:cada08fc8a70 1069 /* Client derives PMS */
mbedAustin 11:cada08fc8a70 1070 TEST_ASSERT( mbedtls_ecjpake_derive_secret( &cli,
mbedAustin 11:cada08fc8a70 1071 buf, sizeof( buf ), &len, ecjpake_lgc, NULL ) == 0 );
mbedAustin 11:cada08fc8a70 1072
mbedAustin 11:cada08fc8a70 1073 TEST_ASSERT( len == sizeof( ecjpake_test_pms ) );
mbedAustin 11:cada08fc8a70 1074 TEST_ASSERT( memcmp( buf, ecjpake_test_pms, len ) == 0 );
mbedAustin 11:cada08fc8a70 1075
mbedAustin 11:cada08fc8a70 1076 if( verbose != 0 )
mbedAustin 11:cada08fc8a70 1077 mbedtls_printf( "passed\n" );
mbedAustin 11:cada08fc8a70 1078
mbedAustin 11:cada08fc8a70 1079 cleanup:
mbedAustin 11:cada08fc8a70 1080 mbedtls_ecjpake_free( &cli );
mbedAustin 11:cada08fc8a70 1081 mbedtls_ecjpake_free( &srv );
mbedAustin 11:cada08fc8a70 1082
mbedAustin 11:cada08fc8a70 1083 if( ret != 0 )
mbedAustin 11:cada08fc8a70 1084 {
mbedAustin 11:cada08fc8a70 1085 if( verbose != 0 )
mbedAustin 11:cada08fc8a70 1086 mbedtls_printf( "failed\n" );
mbedAustin 11:cada08fc8a70 1087
mbedAustin 11:cada08fc8a70 1088 ret = 1;
mbedAustin 11:cada08fc8a70 1089 }
mbedAustin 11:cada08fc8a70 1090
mbedAustin 11:cada08fc8a70 1091 if( verbose != 0 )
mbedAustin 11:cada08fc8a70 1092 mbedtls_printf( "\n" );
mbedAustin 11:cada08fc8a70 1093
mbedAustin 11:cada08fc8a70 1094 return( ret );
mbedAustin 11:cada08fc8a70 1095 }
mbedAustin 11:cada08fc8a70 1096
mbedAustin 11:cada08fc8a70 1097 #undef TEST_ASSERT
mbedAustin 11:cada08fc8a70 1098
mbedAustin 11:cada08fc8a70 1099 #endif /* MBEDTLS_ECP_DP_SECP256R1_ENABLED && MBEDTLS_SHA256_C */
mbedAustin 11:cada08fc8a70 1100
mbedAustin 11:cada08fc8a70 1101 #endif /* MBEDTLS_SELF_TEST */
mbedAustin 11:cada08fc8a70 1102
mbedAustin 11:cada08fc8a70 1103 #endif /* MBEDTLS_ECJPAKE_C */