sandbox / mbedtls

mbedtls ported to mbed-classic

Fork of mbedtls by Christopher Haster

source/ecjpake.c@4:bef26f687287, 2016-04-07 (annotated)

Committer:
Brian Daniels
Date:
Thu Apr 07 11:11:18 2016 +0100
Revision:
4:bef26f687287
Parent:
1:24750b9ad5ef 
Adding ported selftest test case

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Christopher Haster 1:24750b9ad5ef 1 /*
Christopher Haster 1:24750b9ad5ef 2 * Elliptic curve J-PAKE
Christopher Haster 1:24750b9ad5ef 3 *
Christopher Haster 1:24750b9ad5ef 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
Christopher Haster 1:24750b9ad5ef 5 * SPDX-License-Identifier: Apache-2.0
Christopher Haster 1:24750b9ad5ef 6 *
Christopher Haster 1:24750b9ad5ef 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
Christopher Haster 1:24750b9ad5ef 8 * not use this file except in compliance with the License.
Christopher Haster 1:24750b9ad5ef 9 * You may obtain a copy of the License at
Christopher Haster 1:24750b9ad5ef 10 *
Christopher Haster 1:24750b9ad5ef 11 * http://www.apache.org/licenses/LICENSE-2.0
Christopher Haster 1:24750b9ad5ef 12 *
Christopher Haster 1:24750b9ad5ef 13 * Unless required by applicable law or agreed to in writing, software
Christopher Haster 1:24750b9ad5ef 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
Christopher Haster 1:24750b9ad5ef 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Christopher Haster 1:24750b9ad5ef 16 * See the License for the specific language governing permissions and
Christopher Haster 1:24750b9ad5ef 17 * limitations under the License.
Christopher Haster 1:24750b9ad5ef 18 *
Christopher Haster 1:24750b9ad5ef 19 * This file is part of mbed TLS (https://tls.mbed.org)
Christopher Haster 1:24750b9ad5ef 20 */
Christopher Haster 1:24750b9ad5ef 21
Christopher Haster 1:24750b9ad5ef 22 /*
Christopher Haster 1:24750b9ad5ef 23 * References in the code are to the Thread v1.0 Specification,
Christopher Haster 1:24750b9ad5ef 24 * available to members of the Thread Group http://threadgroup.org/
Christopher Haster 1:24750b9ad5ef 25 */
Christopher Haster 1:24750b9ad5ef 26
Christopher Haster 1:24750b9ad5ef 27 #if !defined(MBEDTLS_CONFIG_FILE)
Christopher Haster 1:24750b9ad5ef 28 #include "mbedtls/config.h"
Christopher Haster 1:24750b9ad5ef 29 #else
Christopher Haster 1:24750b9ad5ef 30 #include MBEDTLS_CONFIG_FILE
Christopher Haster 1:24750b9ad5ef 31 #endif
Christopher Haster 1:24750b9ad5ef 32
Christopher Haster 1:24750b9ad5ef 33 #if defined(MBEDTLS_ECJPAKE_C)
Christopher Haster 1:24750b9ad5ef 34
Christopher Haster 1:24750b9ad5ef 35 #include "mbedtls/ecjpake.h"
Christopher Haster 1:24750b9ad5ef 36
Christopher Haster 1:24750b9ad5ef 37 #include <string.h>
Christopher Haster 1:24750b9ad5ef 38
Christopher Haster 1:24750b9ad5ef 39 /*
Christopher Haster 1:24750b9ad5ef 40 * Convert a mbedtls_ecjpake_role to identifier string
Christopher Haster 1:24750b9ad5ef 41 */
Christopher Haster 1:24750b9ad5ef 42 static const char * const ecjpake_id[] = {
Christopher Haster 1:24750b9ad5ef 43 "client",
Christopher Haster 1:24750b9ad5ef 44 "server"
Christopher Haster 1:24750b9ad5ef 45 };
Christopher Haster 1:24750b9ad5ef 46
Christopher Haster 1:24750b9ad5ef 47 #define ID_MINE ( ecjpake_id[ ctx->role ] )
Christopher Haster 1:24750b9ad5ef 48 #define ID_PEER ( ecjpake_id[ 1 - ctx->role ] )
Christopher Haster 1:24750b9ad5ef 49
Christopher Haster 1:24750b9ad5ef 50 /*
Christopher Haster 1:24750b9ad5ef 51 * Initialize context
Christopher Haster 1:24750b9ad5ef 52 */
Christopher Haster 1:24750b9ad5ef 53 void mbedtls_ecjpake_init( mbedtls_ecjpake_context *ctx )
Christopher Haster 1:24750b9ad5ef 54 {
Christopher Haster 1:24750b9ad5ef 55 if( ctx == NULL )
Christopher Haster 1:24750b9ad5ef 56 return;
Christopher Haster 1:24750b9ad5ef 57
Christopher Haster 1:24750b9ad5ef 58 ctx->md_info = NULL;
Christopher Haster 1:24750b9ad5ef 59 mbedtls_ecp_group_init( &ctx->grp );
Christopher Haster 1:24750b9ad5ef 60 ctx->point_format = MBEDTLS_ECP_PF_UNCOMPRESSED;
Christopher Haster 1:24750b9ad5ef 61
Christopher Haster 1:24750b9ad5ef 62 mbedtls_ecp_point_init( &ctx->Xm1 );
Christopher Haster 1:24750b9ad5ef 63 mbedtls_ecp_point_init( &ctx->Xm2 );
Christopher Haster 1:24750b9ad5ef 64 mbedtls_ecp_point_init( &ctx->Xp1 );
Christopher Haster 1:24750b9ad5ef 65 mbedtls_ecp_point_init( &ctx->Xp2 );
Christopher Haster 1:24750b9ad5ef 66 mbedtls_ecp_point_init( &ctx->Xp );
Christopher Haster 1:24750b9ad5ef 67
Christopher Haster 1:24750b9ad5ef 68 mbedtls_mpi_init( &ctx->xm1 );
Christopher Haster 1:24750b9ad5ef 69 mbedtls_mpi_init( &ctx->xm2 );
Christopher Haster 1:24750b9ad5ef 70 mbedtls_mpi_init( &ctx->s );
Christopher Haster 1:24750b9ad5ef 71 }
Christopher Haster 1:24750b9ad5ef 72
Christopher Haster 1:24750b9ad5ef 73 /*
Christopher Haster 1:24750b9ad5ef 74 * Free context
Christopher Haster 1:24750b9ad5ef 75 */
Christopher Haster 1:24750b9ad5ef 76 void mbedtls_ecjpake_free( mbedtls_ecjpake_context *ctx )
Christopher Haster 1:24750b9ad5ef 77 {
Christopher Haster 1:24750b9ad5ef 78 if( ctx == NULL )
Christopher Haster 1:24750b9ad5ef 79 return;
Christopher Haster 1:24750b9ad5ef 80
Christopher Haster 1:24750b9ad5ef 81 ctx->md_info = NULL;
Christopher Haster 1:24750b9ad5ef 82 mbedtls_ecp_group_free( &ctx->grp );
Christopher Haster 1:24750b9ad5ef 83
Christopher Haster 1:24750b9ad5ef 84 mbedtls_ecp_point_free( &ctx->Xm1 );
Christopher Haster 1:24750b9ad5ef 85 mbedtls_ecp_point_free( &ctx->Xm2 );
Christopher Haster 1:24750b9ad5ef 86 mbedtls_ecp_point_free( &ctx->Xp1 );
Christopher Haster 1:24750b9ad5ef 87 mbedtls_ecp_point_free( &ctx->Xp2 );
Christopher Haster 1:24750b9ad5ef 88 mbedtls_ecp_point_free( &ctx->Xp );
Christopher Haster 1:24750b9ad5ef 89
Christopher Haster 1:24750b9ad5ef 90 mbedtls_mpi_free( &ctx->xm1 );
Christopher Haster 1:24750b9ad5ef 91 mbedtls_mpi_free( &ctx->xm2 );
Christopher Haster 1:24750b9ad5ef 92 mbedtls_mpi_free( &ctx->s );
Christopher Haster 1:24750b9ad5ef 93 }
Christopher Haster 1:24750b9ad5ef 94
Christopher Haster 1:24750b9ad5ef 95 /*
Christopher Haster 1:24750b9ad5ef 96 * Setup context
Christopher Haster 1:24750b9ad5ef 97 */
Christopher Haster 1:24750b9ad5ef 98 int mbedtls_ecjpake_setup( mbedtls_ecjpake_context *ctx,
Christopher Haster 1:24750b9ad5ef 99 mbedtls_ecjpake_role role,
Christopher Haster 1:24750b9ad5ef 100 mbedtls_md_type_t hash,
Christopher Haster 1:24750b9ad5ef 101 mbedtls_ecp_group_id curve,
Christopher Haster 1:24750b9ad5ef 102 const unsigned char *secret,
Christopher Haster 1:24750b9ad5ef 103 size_t len )
Christopher Haster 1:24750b9ad5ef 104 {
Christopher Haster 1:24750b9ad5ef 105 int ret;
Christopher Haster 1:24750b9ad5ef 106
Christopher Haster 1:24750b9ad5ef 107 ctx->role = role;
Christopher Haster 1:24750b9ad5ef 108
Christopher Haster 1:24750b9ad5ef 109 if( ( ctx->md_info = mbedtls_md_info_from_type( hash ) ) == NULL )
Christopher Haster 1:24750b9ad5ef 110 return( MBEDTLS_ERR_MD_FEATURE_UNAVAILABLE );
Christopher Haster 1:24750b9ad5ef 111
Christopher Haster 1:24750b9ad5ef 112 MBEDTLS_MPI_CHK( mbedtls_ecp_group_load( &ctx->grp, curve ) );
Christopher Haster 1:24750b9ad5ef 113
Christopher Haster 1:24750b9ad5ef 114 MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( &ctx->s, secret, len ) );
Christopher Haster 1:24750b9ad5ef 115
Christopher Haster 1:24750b9ad5ef 116 cleanup:
Christopher Haster 1:24750b9ad5ef 117 if( ret != 0 )
Christopher Haster 1:24750b9ad5ef 118 mbedtls_ecjpake_free( ctx );
Christopher Haster 1:24750b9ad5ef 119
Christopher Haster 1:24750b9ad5ef 120 return( ret );
Christopher Haster 1:24750b9ad5ef 121 }
Christopher Haster 1:24750b9ad5ef 122
Christopher Haster 1:24750b9ad5ef 123 /*
Christopher Haster 1:24750b9ad5ef 124 * Check if context is ready for use
Christopher Haster 1:24750b9ad5ef 125 */
Christopher Haster 1:24750b9ad5ef 126 int mbedtls_ecjpake_check( const mbedtls_ecjpake_context *ctx )
Christopher Haster 1:24750b9ad5ef 127 {
Christopher Haster 1:24750b9ad5ef 128 if( ctx->md_info == NULL ||
Christopher Haster 1:24750b9ad5ef 129 ctx->grp.id == MBEDTLS_ECP_DP_NONE ||
Christopher Haster 1:24750b9ad5ef 130 ctx->s.p == NULL )
Christopher Haster 1:24750b9ad5ef 131 {
Christopher Haster 1:24750b9ad5ef 132 return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
Christopher Haster 1:24750b9ad5ef 133 }
Christopher Haster 1:24750b9ad5ef 134
Christopher Haster 1:24750b9ad5ef 135 return( 0 );
Christopher Haster 1:24750b9ad5ef 136 }
Christopher Haster 1:24750b9ad5ef 137
Christopher Haster 1:24750b9ad5ef 138 /*
Christopher Haster 1:24750b9ad5ef 139 * Write a point plus its length to a buffer
Christopher Haster 1:24750b9ad5ef 140 */
Christopher Haster 1:24750b9ad5ef 141 static int ecjpake_write_len_point( unsigned char **p,
Christopher Haster 1:24750b9ad5ef 142 const unsigned char *end,
Christopher Haster 1:24750b9ad5ef 143 const mbedtls_ecp_group *grp,
Christopher Haster 1:24750b9ad5ef 144 const int pf,
Christopher Haster 1:24750b9ad5ef 145 const mbedtls_ecp_point *P )
Christopher Haster 1:24750b9ad5ef 146 {
Christopher Haster 1:24750b9ad5ef 147 int ret;
Christopher Haster 1:24750b9ad5ef 148 size_t len;
Christopher Haster 1:24750b9ad5ef 149
Christopher Haster 1:24750b9ad5ef 150 /* Need at least 4 for length plus 1 for point */
Christopher Haster 1:24750b9ad5ef 151 if( end < *p || end - *p < 5 )
Christopher Haster 1:24750b9ad5ef 152 return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL );
Christopher Haster 1:24750b9ad5ef 153
Christopher Haster 1:24750b9ad5ef 154 ret = mbedtls_ecp_point_write_binary( grp, P, pf,
Christopher Haster 1:24750b9ad5ef 155 &len, *p + 4, end - ( *p + 4 ) );
Christopher Haster 1:24750b9ad5ef 156 if( ret != 0 )
Christopher Haster 1:24750b9ad5ef 157 return( ret );
Christopher Haster 1:24750b9ad5ef 158
Christopher Haster 1:24750b9ad5ef 159 (*p)[0] = (unsigned char)( ( len >> 24 ) & 0xFF );
Christopher Haster 1:24750b9ad5ef 160 (*p)[1] = (unsigned char)( ( len >> 16 ) & 0xFF );
Christopher Haster 1:24750b9ad5ef 161 (*p)[2] = (unsigned char)( ( len >> 8 ) & 0xFF );
Christopher Haster 1:24750b9ad5ef 162 (*p)[3] = (unsigned char)( ( len ) & 0xFF );
Christopher Haster 1:24750b9ad5ef 163
Christopher Haster 1:24750b9ad5ef 164 *p += 4 + len;
Christopher Haster 1:24750b9ad5ef 165
Christopher Haster 1:24750b9ad5ef 166 return( 0 );
Christopher Haster 1:24750b9ad5ef 167 }
Christopher Haster 1:24750b9ad5ef 168
Christopher Haster 1:24750b9ad5ef 169 /*
Christopher Haster 1:24750b9ad5ef 170 * Size of the temporary buffer for ecjpake_hash:
Christopher Haster 1:24750b9ad5ef 171 * 3 EC points plus their length, plus ID and its length (4 + 6 bytes)
Christopher Haster 1:24750b9ad5ef 172 */
Christopher Haster 1:24750b9ad5ef 173 #define ECJPAKE_HASH_BUF_LEN ( 3 * ( 4 + MBEDTLS_ECP_MAX_PT_LEN ) + 4 + 6 )
Christopher Haster 1:24750b9ad5ef 174
Christopher Haster 1:24750b9ad5ef 175 /*
Christopher Haster 1:24750b9ad5ef 176 * Compute hash for ZKP (7.4.2.2.2.1)
Christopher Haster 1:24750b9ad5ef 177 */
Christopher Haster 1:24750b9ad5ef 178 static int ecjpake_hash( const mbedtls_md_info_t *md_info,
Christopher Haster 1:24750b9ad5ef 179 const mbedtls_ecp_group *grp,
Christopher Haster 1:24750b9ad5ef 180 const int pf,
Christopher Haster 1:24750b9ad5ef 181 const mbedtls_ecp_point *G,
Christopher Haster 1:24750b9ad5ef 182 const mbedtls_ecp_point *V,
Christopher Haster 1:24750b9ad5ef 183 const mbedtls_ecp_point *X,
Christopher Haster 1:24750b9ad5ef 184 const char *id,
Christopher Haster 1:24750b9ad5ef 185 mbedtls_mpi *h )
Christopher Haster 1:24750b9ad5ef 186 {
Christopher Haster 1:24750b9ad5ef 187 int ret;
Christopher Haster 1:24750b9ad5ef 188 unsigned char buf[ECJPAKE_HASH_BUF_LEN];
Christopher Haster 1:24750b9ad5ef 189 unsigned char *p = buf;
Christopher Haster 1:24750b9ad5ef 190 const unsigned char *end = buf + sizeof( buf );
Christopher Haster 1:24750b9ad5ef 191 const size_t id_len = strlen( id );
Christopher Haster 1:24750b9ad5ef 192 unsigned char hash[MBEDTLS_MD_MAX_SIZE];
Christopher Haster 1:24750b9ad5ef 193
Christopher Haster 1:24750b9ad5ef 194 /* Write things to temporary buffer */
Christopher Haster 1:24750b9ad5ef 195 MBEDTLS_MPI_CHK( ecjpake_write_len_point( &p, end, grp, pf, G ) );
Christopher Haster 1:24750b9ad5ef 196 MBEDTLS_MPI_CHK( ecjpake_write_len_point( &p, end, grp, pf, V ) );
Christopher Haster 1:24750b9ad5ef 197 MBEDTLS_MPI_CHK( ecjpake_write_len_point( &p, end, grp, pf, X ) );
Christopher Haster 1:24750b9ad5ef 198
Christopher Haster 1:24750b9ad5ef 199 if( end - p < 4 )
Christopher Haster 1:24750b9ad5ef 200 return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL );
Christopher Haster 1:24750b9ad5ef 201
Christopher Haster 1:24750b9ad5ef 202 *p++ = (unsigned char)( ( id_len >> 24 ) & 0xFF );
Christopher Haster 1:24750b9ad5ef 203 *p++ = (unsigned char)( ( id_len >> 16 ) & 0xFF );
Christopher Haster 1:24750b9ad5ef 204 *p++ = (unsigned char)( ( id_len >> 8 ) & 0xFF );
Christopher Haster 1:24750b9ad5ef 205 *p++ = (unsigned char)( ( id_len ) & 0xFF );
Christopher Haster 1:24750b9ad5ef 206
Christopher Haster 1:24750b9ad5ef 207 if( end < p || (size_t)( end - p ) < id_len )
Christopher Haster 1:24750b9ad5ef 208 return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL );
Christopher Haster 1:24750b9ad5ef 209
Christopher Haster 1:24750b9ad5ef 210 memcpy( p, id, id_len );
Christopher Haster 1:24750b9ad5ef 211 p += id_len;
Christopher Haster 1:24750b9ad5ef 212
Christopher Haster 1:24750b9ad5ef 213 /* Compute hash */
Christopher Haster 1:24750b9ad5ef 214 mbedtls_md( md_info, buf, p - buf, hash );
Christopher Haster 1:24750b9ad5ef 215
Christopher Haster 1:24750b9ad5ef 216 /* Turn it into an integer mod n */
Christopher Haster 1:24750b9ad5ef 217 MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( h, hash,
Christopher Haster 1:24750b9ad5ef 218 mbedtls_md_get_size( md_info ) ) );
Christopher Haster 1:24750b9ad5ef 219 MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( h, h, &grp->N ) );
Christopher Haster 1:24750b9ad5ef 220
Christopher Haster 1:24750b9ad5ef 221 cleanup:
Christopher Haster 1:24750b9ad5ef 222 return( ret );
Christopher Haster 1:24750b9ad5ef 223 }
Christopher Haster 1:24750b9ad5ef 224
Christopher Haster 1:24750b9ad5ef 225 /*
Christopher Haster 1:24750b9ad5ef 226 * Parse a ECShnorrZKP (7.4.2.2.2) and verify it (7.4.2.3.3)
Christopher Haster 1:24750b9ad5ef 227 */
Christopher Haster 1:24750b9ad5ef 228 static int ecjpake_zkp_read( const mbedtls_md_info_t *md_info,
Christopher Haster 1:24750b9ad5ef 229 const mbedtls_ecp_group *grp,
Christopher Haster 1:24750b9ad5ef 230 const int pf,
Christopher Haster 1:24750b9ad5ef 231 const mbedtls_ecp_point *G,
Christopher Haster 1:24750b9ad5ef 232 const mbedtls_ecp_point *X,
Christopher Haster 1:24750b9ad5ef 233 const char *id,
Christopher Haster 1:24750b9ad5ef 234 const unsigned char **p,
Christopher Haster 1:24750b9ad5ef 235 const unsigned char *end )
Christopher Haster 1:24750b9ad5ef 236 {
Christopher Haster 1:24750b9ad5ef 237 int ret;
Christopher Haster 1:24750b9ad5ef 238 mbedtls_ecp_point V, VV;
Christopher Haster 1:24750b9ad5ef 239 mbedtls_mpi r, h;
Christopher Haster 1:24750b9ad5ef 240 size_t r_len;
Christopher Haster 1:24750b9ad5ef 241
Christopher Haster 1:24750b9ad5ef 242 mbedtls_ecp_point_init( &V );
Christopher Haster 1:24750b9ad5ef 243 mbedtls_ecp_point_init( &VV );
Christopher Haster 1:24750b9ad5ef 244 mbedtls_mpi_init( &r );
Christopher Haster 1:24750b9ad5ef 245 mbedtls_mpi_init( &h );
Christopher Haster 1:24750b9ad5ef 246
Christopher Haster 1:24750b9ad5ef 247 /*
Christopher Haster 1:24750b9ad5ef 248 * struct {
Christopher Haster 1:24750b9ad5ef 249 * ECPoint V;
Christopher Haster 1:24750b9ad5ef 250 * opaque r<1..2^8-1>;
Christopher Haster 1:24750b9ad5ef 251 * } ECSchnorrZKP;
Christopher Haster 1:24750b9ad5ef 252 */
Christopher Haster 1:24750b9ad5ef 253 if( end < *p )
Christopher Haster 1:24750b9ad5ef 254 return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
Christopher Haster 1:24750b9ad5ef 255
Christopher Haster 1:24750b9ad5ef 256 MBEDTLS_MPI_CHK( mbedtls_ecp_tls_read_point( grp, &V, p, end - *p ) );
Christopher Haster 1:24750b9ad5ef 257
Christopher Haster 1:24750b9ad5ef 258 if( end < *p || (size_t)( end - *p ) < 1 )
Christopher Haster 1:24750b9ad5ef 259 {
Christopher Haster 1:24750b9ad5ef 260 ret = MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
Christopher Haster 1:24750b9ad5ef 261 goto cleanup;
Christopher Haster 1:24750b9ad5ef 262 }
Christopher Haster 1:24750b9ad5ef 263
Christopher Haster 1:24750b9ad5ef 264 r_len = *(*p)++;
Christopher Haster 1:24750b9ad5ef 265
Christopher Haster 1:24750b9ad5ef 266 if( end < *p || (size_t)( end - *p ) < r_len )
Christopher Haster 1:24750b9ad5ef 267 {
Christopher Haster 1:24750b9ad5ef 268 ret = MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
Christopher Haster 1:24750b9ad5ef 269 goto cleanup;
Christopher Haster 1:24750b9ad5ef 270 }
Christopher Haster 1:24750b9ad5ef 271
Christopher Haster 1:24750b9ad5ef 272 MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( &r, *p, r_len ) );
Christopher Haster 1:24750b9ad5ef 273 *p += r_len;
Christopher Haster 1:24750b9ad5ef 274
Christopher Haster 1:24750b9ad5ef 275 /*
Christopher Haster 1:24750b9ad5ef 276 * Verification
Christopher Haster 1:24750b9ad5ef 277 */
Christopher Haster 1:24750b9ad5ef 278 MBEDTLS_MPI_CHK( ecjpake_hash( md_info, grp, pf, G, &V, X, id, &h ) );
Christopher Haster 1:24750b9ad5ef 279 MBEDTLS_MPI_CHK( mbedtls_ecp_muladd( (mbedtls_ecp_group *) grp,
Christopher Haster 1:24750b9ad5ef 280 &VV, &h, X, &r, G ) );
Christopher Haster 1:24750b9ad5ef 281
Christopher Haster 1:24750b9ad5ef 282 if( mbedtls_ecp_point_cmp( &VV, &V ) != 0 )
Christopher Haster 1:24750b9ad5ef 283 {
Christopher Haster 1:24750b9ad5ef 284 ret = MBEDTLS_ERR_ECP_VERIFY_FAILED;
Christopher Haster 1:24750b9ad5ef 285 goto cleanup;
Christopher Haster 1:24750b9ad5ef 286 }
Christopher Haster 1:24750b9ad5ef 287
Christopher Haster 1:24750b9ad5ef 288 cleanup:
Christopher Haster 1:24750b9ad5ef 289 mbedtls_ecp_point_free( &V );
Christopher Haster 1:24750b9ad5ef 290 mbedtls_ecp_point_free( &VV );
Christopher Haster 1:24750b9ad5ef 291 mbedtls_mpi_free( &r );
Christopher Haster 1:24750b9ad5ef 292 mbedtls_mpi_free( &h );
Christopher Haster 1:24750b9ad5ef 293
Christopher Haster 1:24750b9ad5ef 294 return( ret );
Christopher Haster 1:24750b9ad5ef 295 }
Christopher Haster 1:24750b9ad5ef 296
Christopher Haster 1:24750b9ad5ef 297 /*
Christopher Haster 1:24750b9ad5ef 298 * Generate ZKP (7.4.2.3.2) and write it as ECSchnorrZKP (7.4.2.2.2)
Christopher Haster 1:24750b9ad5ef 299 */
Christopher Haster 1:24750b9ad5ef 300 static int ecjpake_zkp_write( const mbedtls_md_info_t *md_info,
Christopher Haster 1:24750b9ad5ef 301 const mbedtls_ecp_group *grp,
Christopher Haster 1:24750b9ad5ef 302 const int pf,
Christopher Haster 1:24750b9ad5ef 303 const mbedtls_ecp_point *G,
Christopher Haster 1:24750b9ad5ef 304 const mbedtls_mpi *x,
Christopher Haster 1:24750b9ad5ef 305 const mbedtls_ecp_point *X,
Christopher Haster 1:24750b9ad5ef 306 const char *id,
Christopher Haster 1:24750b9ad5ef 307 unsigned char **p,
Christopher Haster 1:24750b9ad5ef 308 const unsigned char *end,
Christopher Haster 1:24750b9ad5ef 309 int (*f_rng)(void *, unsigned char *, size_t),
Christopher Haster 1:24750b9ad5ef 310 void *p_rng )
Christopher Haster 1:24750b9ad5ef 311 {
Christopher Haster 1:24750b9ad5ef 312 int ret;
Christopher Haster 1:24750b9ad5ef 313 mbedtls_ecp_point V;
Christopher Haster 1:24750b9ad5ef 314 mbedtls_mpi v;
Christopher Haster 1:24750b9ad5ef 315 mbedtls_mpi h; /* later recycled to hold r */
Christopher Haster 1:24750b9ad5ef 316 size_t len;
Christopher Haster 1:24750b9ad5ef 317
Christopher Haster 1:24750b9ad5ef 318 if( end < *p )
Christopher Haster 1:24750b9ad5ef 319 return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL );
Christopher Haster 1:24750b9ad5ef 320
Christopher Haster 1:24750b9ad5ef 321 mbedtls_ecp_point_init( &V );
Christopher Haster 1:24750b9ad5ef 322 mbedtls_mpi_init( &v );
Christopher Haster 1:24750b9ad5ef 323 mbedtls_mpi_init( &h );
Christopher Haster 1:24750b9ad5ef 324
Christopher Haster 1:24750b9ad5ef 325 /* Compute signature */
Christopher Haster 1:24750b9ad5ef 326 MBEDTLS_MPI_CHK( mbedtls_ecp_gen_keypair_base( (mbedtls_ecp_group *) grp,
Christopher Haster 1:24750b9ad5ef 327 G, &v, &V, f_rng, p_rng ) );
Christopher Haster 1:24750b9ad5ef 328 MBEDTLS_MPI_CHK( ecjpake_hash( md_info, grp, pf, G, &V, X, id, &h ) );
Christopher Haster 1:24750b9ad5ef 329 MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &h, &h, x ) ); /* x*h */
Christopher Haster 1:24750b9ad5ef 330 MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mpi( &h, &v, &h ) ); /* v - x*h */
Christopher Haster 1:24750b9ad5ef 331 MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &h, &h, &grp->N ) ); /* r */
Christopher Haster 1:24750b9ad5ef 332
Christopher Haster 1:24750b9ad5ef 333 /* Write it out */
Christopher Haster 1:24750b9ad5ef 334 MBEDTLS_MPI_CHK( mbedtls_ecp_tls_write_point( grp, &V,
Christopher Haster 1:24750b9ad5ef 335 pf, &len, *p, end - *p ) );
Christopher Haster 1:24750b9ad5ef 336 *p += len;
Christopher Haster 1:24750b9ad5ef 337
Christopher Haster 1:24750b9ad5ef 338 len = mbedtls_mpi_size( &h ); /* actually r */
Christopher Haster 1:24750b9ad5ef 339 if( end < *p || (size_t)( end - *p ) < 1 + len || len > 255 )
Christopher Haster 1:24750b9ad5ef 340 {
Christopher Haster 1:24750b9ad5ef 341 ret = MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL;
Christopher Haster 1:24750b9ad5ef 342 goto cleanup;
Christopher Haster 1:24750b9ad5ef 343 }
Christopher Haster 1:24750b9ad5ef 344
Christopher Haster 1:24750b9ad5ef 345 *(*p)++ = (unsigned char)( len & 0xFF );
Christopher Haster 1:24750b9ad5ef 346 MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( &h, *p, len ) ); /* r */
Christopher Haster 1:24750b9ad5ef 347 *p += len;
Christopher Haster 1:24750b9ad5ef 348
Christopher Haster 1:24750b9ad5ef 349 cleanup:
Christopher Haster 1:24750b9ad5ef 350 mbedtls_ecp_point_free( &V );
Christopher Haster 1:24750b9ad5ef 351 mbedtls_mpi_free( &v );
Christopher Haster 1:24750b9ad5ef 352 mbedtls_mpi_free( &h );
Christopher Haster 1:24750b9ad5ef 353
Christopher Haster 1:24750b9ad5ef 354 return( ret );
Christopher Haster 1:24750b9ad5ef 355 }
Christopher Haster 1:24750b9ad5ef 356
Christopher Haster 1:24750b9ad5ef 357 /*
Christopher Haster 1:24750b9ad5ef 358 * Parse a ECJPAKEKeyKP (7.4.2.2.1) and check proof
Christopher Haster 1:24750b9ad5ef 359 * Output: verified public key X
Christopher Haster 1:24750b9ad5ef 360 */
Christopher Haster 1:24750b9ad5ef 361 static int ecjpake_kkp_read( const mbedtls_md_info_t *md_info,
Christopher Haster 1:24750b9ad5ef 362 const mbedtls_ecp_group *grp,
Christopher Haster 1:24750b9ad5ef 363 const int pf,
Christopher Haster 1:24750b9ad5ef 364 const mbedtls_ecp_point *G,
Christopher Haster 1:24750b9ad5ef 365 mbedtls_ecp_point *X,
Christopher Haster 1:24750b9ad5ef 366 const char *id,
Christopher Haster 1:24750b9ad5ef 367 const unsigned char **p,
Christopher Haster 1:24750b9ad5ef 368 const unsigned char *end )
Christopher Haster 1:24750b9ad5ef 369 {
Christopher Haster 1:24750b9ad5ef 370 int ret;
Christopher Haster 1:24750b9ad5ef 371
Christopher Haster 1:24750b9ad5ef 372 if( end < *p )
Christopher Haster 1:24750b9ad5ef 373 return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
Christopher Haster 1:24750b9ad5ef 374
Christopher Haster 1:24750b9ad5ef 375 /*
Christopher Haster 1:24750b9ad5ef 376 * struct {
Christopher Haster 1:24750b9ad5ef 377 * ECPoint X;
Christopher Haster 1:24750b9ad5ef 378 * ECSchnorrZKP zkp;
Christopher Haster 1:24750b9ad5ef 379 * } ECJPAKEKeyKP;
Christopher Haster 1:24750b9ad5ef 380 */
Christopher Haster 1:24750b9ad5ef 381 MBEDTLS_MPI_CHK( mbedtls_ecp_tls_read_point( grp, X, p, end - *p ) );
Christopher Haster 1:24750b9ad5ef 382 if( mbedtls_ecp_is_zero( X ) )
Christopher Haster 1:24750b9ad5ef 383 {
Christopher Haster 1:24750b9ad5ef 384 ret = MBEDTLS_ERR_ECP_INVALID_KEY;
Christopher Haster 1:24750b9ad5ef 385 goto cleanup;
Christopher Haster 1:24750b9ad5ef 386 }
Christopher Haster 1:24750b9ad5ef 387
Christopher Haster 1:24750b9ad5ef 388 MBEDTLS_MPI_CHK( ecjpake_zkp_read( md_info, grp, pf, G, X, id, p, end ) );
Christopher Haster 1:24750b9ad5ef 389
Christopher Haster 1:24750b9ad5ef 390 cleanup:
Christopher Haster 1:24750b9ad5ef 391 return( ret );
Christopher Haster 1:24750b9ad5ef 392 }
Christopher Haster 1:24750b9ad5ef 393
Christopher Haster 1:24750b9ad5ef 394 /*
Christopher Haster 1:24750b9ad5ef 395 * Generate an ECJPAKEKeyKP
Christopher Haster 1:24750b9ad5ef 396 * Output: the serialized structure, plus private/public key pair
Christopher Haster 1:24750b9ad5ef 397 */
Christopher Haster 1:24750b9ad5ef 398 static int ecjpake_kkp_write( const mbedtls_md_info_t *md_info,
Christopher Haster 1:24750b9ad5ef 399 const mbedtls_ecp_group *grp,
Christopher Haster 1:24750b9ad5ef 400 const int pf,
Christopher Haster 1:24750b9ad5ef 401 const mbedtls_ecp_point *G,
Christopher Haster 1:24750b9ad5ef 402 mbedtls_mpi *x,
Christopher Haster 1:24750b9ad5ef 403 mbedtls_ecp_point *X,
Christopher Haster 1:24750b9ad5ef 404 const char *id,
Christopher Haster 1:24750b9ad5ef 405 unsigned char **p,
Christopher Haster 1:24750b9ad5ef 406 const unsigned char *end,
Christopher Haster 1:24750b9ad5ef 407 int (*f_rng)(void *, unsigned char *, size_t),
Christopher Haster 1:24750b9ad5ef 408 void *p_rng )
Christopher Haster 1:24750b9ad5ef 409 {
Christopher Haster 1:24750b9ad5ef 410 int ret;
Christopher Haster 1:24750b9ad5ef 411 size_t len;
Christopher Haster 1:24750b9ad5ef 412
Christopher Haster 1:24750b9ad5ef 413 if( end < *p )
Christopher Haster 1:24750b9ad5ef 414 return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL );
Christopher Haster 1:24750b9ad5ef 415
Christopher Haster 1:24750b9ad5ef 416 /* Generate key (7.4.2.3.1) and write it out */
Christopher Haster 1:24750b9ad5ef 417 MBEDTLS_MPI_CHK( mbedtls_ecp_gen_keypair_base( (mbedtls_ecp_group *) grp, G, x, X,
Christopher Haster 1:24750b9ad5ef 418 f_rng, p_rng ) );
Christopher Haster 1:24750b9ad5ef 419 MBEDTLS_MPI_CHK( mbedtls_ecp_tls_write_point( grp, X,
Christopher Haster 1:24750b9ad5ef 420 pf, &len, *p, end - *p ) );
Christopher Haster 1:24750b9ad5ef 421 *p += len;
Christopher Haster 1:24750b9ad5ef 422
Christopher Haster 1:24750b9ad5ef 423 /* Generate and write proof */
Christopher Haster 1:24750b9ad5ef 424 MBEDTLS_MPI_CHK( ecjpake_zkp_write( md_info, grp, pf, G, x, X, id,
Christopher Haster 1:24750b9ad5ef 425 p, end, f_rng, p_rng ) );
Christopher Haster 1:24750b9ad5ef 426
Christopher Haster 1:24750b9ad5ef 427 cleanup:
Christopher Haster 1:24750b9ad5ef 428 return( ret );
Christopher Haster 1:24750b9ad5ef 429 }
Christopher Haster 1:24750b9ad5ef 430
Christopher Haster 1:24750b9ad5ef 431 /*
Christopher Haster 1:24750b9ad5ef 432 * Read a ECJPAKEKeyKPPairList (7.4.2.3) and check proofs
Christopher Haster 1:24750b9ad5ef 433 * Ouputs: verified peer public keys Xa, Xb
Christopher Haster 1:24750b9ad5ef 434 */
Christopher Haster 1:24750b9ad5ef 435 static int ecjpake_kkpp_read( const mbedtls_md_info_t *md_info,
Christopher Haster 1:24750b9ad5ef 436 const mbedtls_ecp_group *grp,
Christopher Haster 1:24750b9ad5ef 437 const int pf,
Christopher Haster 1:24750b9ad5ef 438 const mbedtls_ecp_point *G,
Christopher Haster 1:24750b9ad5ef 439 mbedtls_ecp_point *Xa,
Christopher Haster 1:24750b9ad5ef 440 mbedtls_ecp_point *Xb,
Christopher Haster 1:24750b9ad5ef 441 const char *id,
Christopher Haster 1:24750b9ad5ef 442 const unsigned char *buf,
Christopher Haster 1:24750b9ad5ef 443 size_t len )
Christopher Haster 1:24750b9ad5ef 444 {
Christopher Haster 1:24750b9ad5ef 445 int ret;
Christopher Haster 1:24750b9ad5ef 446 const unsigned char *p = buf;
Christopher Haster 1:24750b9ad5ef 447 const unsigned char *end = buf + len;
Christopher Haster 1:24750b9ad5ef 448
Christopher Haster 1:24750b9ad5ef 449 /*
Christopher Haster 1:24750b9ad5ef 450 * struct {
Christopher Haster 1:24750b9ad5ef 451 * ECJPAKEKeyKP ecjpake_key_kp_pair_list[2];
Christopher Haster 1:24750b9ad5ef 452 * } ECJPAKEKeyKPPairList;
Christopher Haster 1:24750b9ad5ef 453 */
Christopher Haster 1:24750b9ad5ef 454 MBEDTLS_MPI_CHK( ecjpake_kkp_read( md_info, grp, pf, G, Xa, id, &p, end ) );
Christopher Haster 1:24750b9ad5ef 455 MBEDTLS_MPI_CHK( ecjpake_kkp_read( md_info, grp, pf, G, Xb, id, &p, end ) );
Christopher Haster 1:24750b9ad5ef 456
Christopher Haster 1:24750b9ad5ef 457 if( p != end )
Christopher Haster 1:24750b9ad5ef 458 ret = MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
Christopher Haster 1:24750b9ad5ef 459
Christopher Haster 1:24750b9ad5ef 460 cleanup:
Christopher Haster 1:24750b9ad5ef 461 return( ret );
Christopher Haster 1:24750b9ad5ef 462 }
Christopher Haster 1:24750b9ad5ef 463
Christopher Haster 1:24750b9ad5ef 464 /*
Christopher Haster 1:24750b9ad5ef 465 * Generate a ECJPAKEKeyKPPairList
Christopher Haster 1:24750b9ad5ef 466 * Outputs: the serialized structure, plus two private/public key pairs
Christopher Haster 1:24750b9ad5ef 467 */
Christopher Haster 1:24750b9ad5ef 468 static int ecjpake_kkpp_write( const mbedtls_md_info_t *md_info,
Christopher Haster 1:24750b9ad5ef 469 const mbedtls_ecp_group *grp,
Christopher Haster 1:24750b9ad5ef 470 const int pf,
Christopher Haster 1:24750b9ad5ef 471 const mbedtls_ecp_point *G,
Christopher Haster 1:24750b9ad5ef 472 mbedtls_mpi *xm1,
Christopher Haster 1:24750b9ad5ef 473 mbedtls_ecp_point *Xa,
Christopher Haster 1:24750b9ad5ef 474 mbedtls_mpi *xm2,
Christopher Haster 1:24750b9ad5ef 475 mbedtls_ecp_point *Xb,
Christopher Haster 1:24750b9ad5ef 476 const char *id,
Christopher Haster 1:24750b9ad5ef 477 unsigned char *buf,
Christopher Haster 1:24750b9ad5ef 478 size_t len,
Christopher Haster 1:24750b9ad5ef 479 size_t *olen,
Christopher Haster 1:24750b9ad5ef 480 int (*f_rng)(void *, unsigned char *, size_t),
Christopher Haster 1:24750b9ad5ef 481 void *p_rng )
Christopher Haster 1:24750b9ad5ef 482 {
Christopher Haster 1:24750b9ad5ef 483 int ret;
Christopher Haster 1:24750b9ad5ef 484 unsigned char *p = buf;
Christopher Haster 1:24750b9ad5ef 485 const unsigned char *end = buf + len;
Christopher Haster 1:24750b9ad5ef 486
Christopher Haster 1:24750b9ad5ef 487 MBEDTLS_MPI_CHK( ecjpake_kkp_write( md_info, grp, pf, G, xm1, Xa, id,
Christopher Haster 1:24750b9ad5ef 488 &p, end, f_rng, p_rng ) );
Christopher Haster 1:24750b9ad5ef 489 MBEDTLS_MPI_CHK( ecjpake_kkp_write( md_info, grp, pf, G, xm2, Xb, id,
Christopher Haster 1:24750b9ad5ef 490 &p, end, f_rng, p_rng ) );
Christopher Haster 1:24750b9ad5ef 491
Christopher Haster 1:24750b9ad5ef 492 *olen = p - buf;
Christopher Haster 1:24750b9ad5ef 493
Christopher Haster 1:24750b9ad5ef 494 cleanup:
Christopher Haster 1:24750b9ad5ef 495 return( ret );
Christopher Haster 1:24750b9ad5ef 496 }
Christopher Haster 1:24750b9ad5ef 497
Christopher Haster 1:24750b9ad5ef 498 /*
Christopher Haster 1:24750b9ad5ef 499 * Read and process the first round message
Christopher Haster 1:24750b9ad5ef 500 */
Christopher Haster 1:24750b9ad5ef 501 int mbedtls_ecjpake_read_round_one( mbedtls_ecjpake_context *ctx,
Christopher Haster 1:24750b9ad5ef 502 const unsigned char *buf,
Christopher Haster 1:24750b9ad5ef 503 size_t len )
Christopher Haster 1:24750b9ad5ef 504 {
Christopher Haster 1:24750b9ad5ef 505 return( ecjpake_kkpp_read( ctx->md_info, &ctx->grp, ctx->point_format,
Christopher Haster 1:24750b9ad5ef 506 &ctx->grp.G,
Christopher Haster 1:24750b9ad5ef 507 &ctx->Xp1, &ctx->Xp2, ID_PEER,
Christopher Haster 1:24750b9ad5ef 508 buf, len ) );
Christopher Haster 1:24750b9ad5ef 509 }
Christopher Haster 1:24750b9ad5ef 510
Christopher Haster 1:24750b9ad5ef 511 /*
Christopher Haster 1:24750b9ad5ef 512 * Generate and write the first round message
Christopher Haster 1:24750b9ad5ef 513 */
Christopher Haster 1:24750b9ad5ef 514 int mbedtls_ecjpake_write_round_one( mbedtls_ecjpake_context *ctx,
Christopher Haster 1:24750b9ad5ef 515 unsigned char *buf, size_t len, size_t *olen,
Christopher Haster 1:24750b9ad5ef 516 int (*f_rng)(void *, unsigned char *, size_t),
Christopher Haster 1:24750b9ad5ef 517 void *p_rng )
Christopher Haster 1:24750b9ad5ef 518 {
Christopher Haster 1:24750b9ad5ef 519 return( ecjpake_kkpp_write( ctx->md_info, &ctx->grp, ctx->point_format,
Christopher Haster 1:24750b9ad5ef 520 &ctx->grp.G,
Christopher Haster 1:24750b9ad5ef 521 &ctx->xm1, &ctx->Xm1, &ctx->xm2, &ctx->Xm2,
Christopher Haster 1:24750b9ad5ef 522 ID_MINE, buf, len, olen, f_rng, p_rng ) );
Christopher Haster 1:24750b9ad5ef 523 }
Christopher Haster 1:24750b9ad5ef 524
Christopher Haster 1:24750b9ad5ef 525 /*
Christopher Haster 1:24750b9ad5ef 526 * Compute the sum of three points R = A + B + C
Christopher Haster 1:24750b9ad5ef 527 */
Christopher Haster 1:24750b9ad5ef 528 static int ecjpake_ecp_add3( mbedtls_ecp_group *grp, mbedtls_ecp_point *R,
Christopher Haster 1:24750b9ad5ef 529 const mbedtls_ecp_point *A,
Christopher Haster 1:24750b9ad5ef 530 const mbedtls_ecp_point *B,
Christopher Haster 1:24750b9ad5ef 531 const mbedtls_ecp_point *C )
Christopher Haster 1:24750b9ad5ef 532 {
Christopher Haster 1:24750b9ad5ef 533 int ret;
Christopher Haster 1:24750b9ad5ef 534 mbedtls_mpi one;
Christopher Haster 1:24750b9ad5ef 535
Christopher Haster 1:24750b9ad5ef 536 mbedtls_mpi_init( &one );
Christopher Haster 1:24750b9ad5ef 537
Christopher Haster 1:24750b9ad5ef 538 MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &one, 1 ) );
Christopher Haster 1:24750b9ad5ef 539 MBEDTLS_MPI_CHK( mbedtls_ecp_muladd( grp, R, &one, A, &one, B ) );
Christopher Haster 1:24750b9ad5ef 540 MBEDTLS_MPI_CHK( mbedtls_ecp_muladd( grp, R, &one, R, &one, C ) );
Christopher Haster 1:24750b9ad5ef 541
Christopher Haster 1:24750b9ad5ef 542 cleanup:
Christopher Haster 1:24750b9ad5ef 543 mbedtls_mpi_free( &one );
Christopher Haster 1:24750b9ad5ef 544
Christopher Haster 1:24750b9ad5ef 545 return( ret );
Christopher Haster 1:24750b9ad5ef 546 }
Christopher Haster 1:24750b9ad5ef 547
Christopher Haster 1:24750b9ad5ef 548 /*
Christopher Haster 1:24750b9ad5ef 549 * Read and process second round message (C: 7.4.2.5, S: 7.4.2.6)
Christopher Haster 1:24750b9ad5ef 550 */
Christopher Haster 1:24750b9ad5ef 551 int mbedtls_ecjpake_read_round_two( mbedtls_ecjpake_context *ctx,
Christopher Haster 1:24750b9ad5ef 552 const unsigned char *buf,
Christopher Haster 1:24750b9ad5ef 553 size_t len )
Christopher Haster 1:24750b9ad5ef 554 {
Christopher Haster 1:24750b9ad5ef 555 int ret;
Christopher Haster 1:24750b9ad5ef 556 const unsigned char *p = buf;
Christopher Haster 1:24750b9ad5ef 557 const unsigned char *end = buf + len;
Christopher Haster 1:24750b9ad5ef 558 mbedtls_ecp_group grp;
Christopher Haster 1:24750b9ad5ef 559 mbedtls_ecp_point G; /* C: GB, S: GA */
Christopher Haster 1:24750b9ad5ef 560
Christopher Haster 1:24750b9ad5ef 561 mbedtls_ecp_group_init( &grp );
Christopher Haster 1:24750b9ad5ef 562 mbedtls_ecp_point_init( &G );
Christopher Haster 1:24750b9ad5ef 563
Christopher Haster 1:24750b9ad5ef 564 /*
Christopher Haster 1:24750b9ad5ef 565 * Server: GA = X3 + X4 + X1 (7.4.2.6.1)
Christopher Haster 1:24750b9ad5ef 566 * Client: GB = X1 + X2 + X3 (7.4.2.5.1)
Christopher Haster 1:24750b9ad5ef 567 * Unified: G = Xm1 + Xm2 + Xp1
Christopher Haster 1:24750b9ad5ef 568 * We need that before parsing in order to check Xp as we read it
Christopher Haster 1:24750b9ad5ef 569 */
Christopher Haster 1:24750b9ad5ef 570 MBEDTLS_MPI_CHK( ecjpake_ecp_add3( &ctx->grp, &G,
Christopher Haster 1:24750b9ad5ef 571 &ctx->Xm1, &ctx->Xm2, &ctx->Xp1 ) );
Christopher Haster 1:24750b9ad5ef 572
Christopher Haster 1:24750b9ad5ef 573 /*
Christopher Haster 1:24750b9ad5ef 574 * struct {
Christopher Haster 1:24750b9ad5ef 575 * ECParameters curve_params; // only client reading server msg
Christopher Haster 1:24750b9ad5ef 576 * ECJPAKEKeyKP ecjpake_key_kp;
Christopher Haster 1:24750b9ad5ef 577 * } Client/ServerECJPAKEParams;
Christopher Haster 1:24750b9ad5ef 578 */
Christopher Haster 1:24750b9ad5ef 579 if( ctx->role == MBEDTLS_ECJPAKE_CLIENT )
Christopher Haster 1:24750b9ad5ef 580 {
Christopher Haster 1:24750b9ad5ef 581 MBEDTLS_MPI_CHK( mbedtls_ecp_tls_read_group( &grp, &p, len ) );
Christopher Haster 1:24750b9ad5ef 582 if( grp.id != ctx->grp.id )
Christopher Haster 1:24750b9ad5ef 583 {
Christopher Haster 1:24750b9ad5ef 584 ret = MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE;
Christopher Haster 1:24750b9ad5ef 585 goto cleanup;
Christopher Haster 1:24750b9ad5ef 586 }
Christopher Haster 1:24750b9ad5ef 587 }
Christopher Haster 1:24750b9ad5ef 588
Christopher Haster 1:24750b9ad5ef 589 MBEDTLS_MPI_CHK( ecjpake_kkp_read( ctx->md_info, &ctx->grp,
Christopher Haster 1:24750b9ad5ef 590 ctx->point_format,
Christopher Haster 1:24750b9ad5ef 591 &G, &ctx->Xp, ID_PEER, &p, end ) );
Christopher Haster 1:24750b9ad5ef 592
Christopher Haster 1:24750b9ad5ef 593 if( p != end )
Christopher Haster 1:24750b9ad5ef 594 {
Christopher Haster 1:24750b9ad5ef 595 ret = MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
Christopher Haster 1:24750b9ad5ef 596 goto cleanup;
Christopher Haster 1:24750b9ad5ef 597 }
Christopher Haster 1:24750b9ad5ef 598
Christopher Haster 1:24750b9ad5ef 599 cleanup:
Christopher Haster 1:24750b9ad5ef 600 mbedtls_ecp_group_free( &grp );
Christopher Haster 1:24750b9ad5ef 601 mbedtls_ecp_point_free( &G );
Christopher Haster 1:24750b9ad5ef 602
Christopher Haster 1:24750b9ad5ef 603 return( ret );
Christopher Haster 1:24750b9ad5ef 604 }
Christopher Haster 1:24750b9ad5ef 605
Christopher Haster 1:24750b9ad5ef 606 /*
Christopher Haster 1:24750b9ad5ef 607 * Compute R = +/- X * S mod N, taking care not to leak S
Christopher Haster 1:24750b9ad5ef 608 */
Christopher Haster 1:24750b9ad5ef 609 static int ecjpake_mul_secret( mbedtls_mpi *R, int sign,
Christopher Haster 1:24750b9ad5ef 610 const mbedtls_mpi *X,
Christopher Haster 1:24750b9ad5ef 611 const mbedtls_mpi *S,
Christopher Haster 1:24750b9ad5ef 612 const mbedtls_mpi *N,
Christopher Haster 1:24750b9ad5ef 613 int (*f_rng)(void *, unsigned char *, size_t),
Christopher Haster 1:24750b9ad5ef 614 void *p_rng )
Christopher Haster 1:24750b9ad5ef 615 {
Christopher Haster 1:24750b9ad5ef 616 int ret;
Christopher Haster 1:24750b9ad5ef 617 mbedtls_mpi b; /* Blinding value, then s + N * blinding */
Christopher Haster 1:24750b9ad5ef 618
Christopher Haster 1:24750b9ad5ef 619 mbedtls_mpi_init( &b );
Christopher Haster 1:24750b9ad5ef 620
Christopher Haster 1:24750b9ad5ef 621 /* b = s + rnd-128-bit * N */
Christopher Haster 1:24750b9ad5ef 622 MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( &b, 16, f_rng, p_rng ) );
Christopher Haster 1:24750b9ad5ef 623 MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &b, &b, N ) );
Christopher Haster 1:24750b9ad5ef 624 MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( &b, &b, S ) );
Christopher Haster 1:24750b9ad5ef 625
Christopher Haster 1:24750b9ad5ef 626 /* R = sign * X * b mod N */
Christopher Haster 1:24750b9ad5ef 627 MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( R, X, &b ) );
Christopher Haster 1:24750b9ad5ef 628 R->s *= sign;
Christopher Haster 1:24750b9ad5ef 629 MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( R, R, N ) );
Christopher Haster 1:24750b9ad5ef 630
Christopher Haster 1:24750b9ad5ef 631 cleanup:
Christopher Haster 1:24750b9ad5ef 632 mbedtls_mpi_free( &b );
Christopher Haster 1:24750b9ad5ef 633
Christopher Haster 1:24750b9ad5ef 634 return( ret );
Christopher Haster 1:24750b9ad5ef 635 }
Christopher Haster 1:24750b9ad5ef 636
Christopher Haster 1:24750b9ad5ef 637 /*
Christopher Haster 1:24750b9ad5ef 638 * Generate and write the second round message (S: 7.4.2.5, C: 7.4.2.6)
Christopher Haster 1:24750b9ad5ef 639 */
Christopher Haster 1:24750b9ad5ef 640 int mbedtls_ecjpake_write_round_two( mbedtls_ecjpake_context *ctx,
Christopher Haster 1:24750b9ad5ef 641 unsigned char *buf, size_t len, size_t *olen,
Christopher Haster 1:24750b9ad5ef 642 int (*f_rng)(void *, unsigned char *, size_t),
Christopher Haster 1:24750b9ad5ef 643 void *p_rng )
Christopher Haster 1:24750b9ad5ef 644 {
Christopher Haster 1:24750b9ad5ef 645 int ret;
Christopher Haster 1:24750b9ad5ef 646 mbedtls_ecp_point G; /* C: GA, S: GB */
Christopher Haster 1:24750b9ad5ef 647 mbedtls_ecp_point Xm; /* C: Xc, S: Xs */
Christopher Haster 1:24750b9ad5ef 648 mbedtls_mpi xm; /* C: xc, S: xs */
Christopher Haster 1:24750b9ad5ef 649 unsigned char *p = buf;
Christopher Haster 1:24750b9ad5ef 650 const unsigned char *end = buf + len;
Christopher Haster 1:24750b9ad5ef 651 size_t ec_len;
Christopher Haster 1:24750b9ad5ef 652
Christopher Haster 1:24750b9ad5ef 653 mbedtls_ecp_point_init( &G );
Christopher Haster 1:24750b9ad5ef 654 mbedtls_ecp_point_init( &Xm );
Christopher Haster 1:24750b9ad5ef 655 mbedtls_mpi_init( &xm );
Christopher Haster 1:24750b9ad5ef 656
Christopher Haster 1:24750b9ad5ef 657 /*
Christopher Haster 1:24750b9ad5ef 658 * First generate private/public key pair (S: 7.4.2.5.1, C: 7.4.2.6.1)
Christopher Haster 1:24750b9ad5ef 659 *
Christopher Haster 1:24750b9ad5ef 660 * Client: GA = X1 + X3 + X4 | xs = x2 * s | Xc = xc * GA
Christopher Haster 1:24750b9ad5ef 661 * Server: GB = X3 + X1 + X2 | xs = x4 * s | Xs = xs * GB
Christopher Haster 1:24750b9ad5ef 662 * Unified: G = Xm1 + Xp1 + Xp2 | xm = xm2 * s | Xm = xm * G
Christopher Haster 1:24750b9ad5ef 663 */
Christopher Haster 1:24750b9ad5ef 664 MBEDTLS_MPI_CHK( ecjpake_ecp_add3( &ctx->grp, &G,
Christopher Haster 1:24750b9ad5ef 665 &ctx->Xp1, &ctx->Xp2, &ctx->Xm1 ) );
Christopher Haster 1:24750b9ad5ef 666 MBEDTLS_MPI_CHK( ecjpake_mul_secret( &xm, 1, &ctx->xm2, &ctx->s,
Christopher Haster 1:24750b9ad5ef 667 &ctx->grp.N, f_rng, p_rng ) );
Christopher Haster 1:24750b9ad5ef 668 MBEDTLS_MPI_CHK( mbedtls_ecp_mul( &ctx->grp, &Xm, &xm, &G, f_rng, p_rng ) );
Christopher Haster 1:24750b9ad5ef 669
Christopher Haster 1:24750b9ad5ef 670 /*
Christopher Haster 1:24750b9ad5ef 671 * Now write things out
Christopher Haster 1:24750b9ad5ef 672 *
Christopher Haster 1:24750b9ad5ef 673 * struct {
Christopher Haster 1:24750b9ad5ef 674 * ECParameters curve_params; // only server writing its message
Christopher Haster 1:24750b9ad5ef 675 * ECJPAKEKeyKP ecjpake_key_kp;
Christopher Haster 1:24750b9ad5ef 676 * } Client/ServerECJPAKEParams;
Christopher Haster 1:24750b9ad5ef 677 */
Christopher Haster 1:24750b9ad5ef 678 if( ctx->role == MBEDTLS_ECJPAKE_SERVER )
Christopher Haster 1:24750b9ad5ef 679 {
Christopher Haster 1:24750b9ad5ef 680 if( end < p )
Christopher Haster 1:24750b9ad5ef 681 {
Christopher Haster 1:24750b9ad5ef 682 ret = MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL;
Christopher Haster 1:24750b9ad5ef 683 goto cleanup;
Christopher Haster 1:24750b9ad5ef 684 }
Christopher Haster 1:24750b9ad5ef 685 MBEDTLS_MPI_CHK( mbedtls_ecp_tls_write_group( &ctx->grp, &ec_len,
Christopher Haster 1:24750b9ad5ef 686 p, end - p ) );
Christopher Haster 1:24750b9ad5ef 687 p += ec_len;
Christopher Haster 1:24750b9ad5ef 688 }
Christopher Haster 1:24750b9ad5ef 689
Christopher Haster 1:24750b9ad5ef 690 if( end < p )
Christopher Haster 1:24750b9ad5ef 691 {
Christopher Haster 1:24750b9ad5ef 692 ret = MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL;
Christopher Haster 1:24750b9ad5ef 693 goto cleanup;
Christopher Haster 1:24750b9ad5ef 694 }
Christopher Haster 1:24750b9ad5ef 695 MBEDTLS_MPI_CHK( mbedtls_ecp_tls_write_point( &ctx->grp, &Xm,
Christopher Haster 1:24750b9ad5ef 696 ctx->point_format, &ec_len, p, end - p ) );
Christopher Haster 1:24750b9ad5ef 697 p += ec_len;
Christopher Haster 1:24750b9ad5ef 698
Christopher Haster 1:24750b9ad5ef 699 MBEDTLS_MPI_CHK( ecjpake_zkp_write( ctx->md_info, &ctx->grp,
Christopher Haster 1:24750b9ad5ef 700 ctx->point_format,
Christopher Haster 1:24750b9ad5ef 701 &G, &xm, &Xm, ID_MINE,
Christopher Haster 1:24750b9ad5ef 702 &p, end, f_rng, p_rng ) );
Christopher Haster 1:24750b9ad5ef 703
Christopher Haster 1:24750b9ad5ef 704 *olen = p - buf;
Christopher Haster 1:24750b9ad5ef 705
Christopher Haster 1:24750b9ad5ef 706 cleanup:
Christopher Haster 1:24750b9ad5ef 707 mbedtls_ecp_point_free( &G );
Christopher Haster 1:24750b9ad5ef 708 mbedtls_ecp_point_free( &Xm );
Christopher Haster 1:24750b9ad5ef 709 mbedtls_mpi_free( &xm );
Christopher Haster 1:24750b9ad5ef 710
Christopher Haster 1:24750b9ad5ef 711 return( ret );
Christopher Haster 1:24750b9ad5ef 712 }
Christopher Haster 1:24750b9ad5ef 713
Christopher Haster 1:24750b9ad5ef 714 /*
Christopher Haster 1:24750b9ad5ef 715 * Derive PMS (7.4.2.7 / 7.4.2.8)
Christopher Haster 1:24750b9ad5ef 716 */
Christopher Haster 1:24750b9ad5ef 717 int mbedtls_ecjpake_derive_secret( mbedtls_ecjpake_context *ctx,
Christopher Haster 1:24750b9ad5ef 718 unsigned char *buf, size_t len, size_t *olen,
Christopher Haster 1:24750b9ad5ef 719 int (*f_rng)(void *, unsigned char *, size_t),
Christopher Haster 1:24750b9ad5ef 720 void *p_rng )
Christopher Haster 1:24750b9ad5ef 721 {
Christopher Haster 1:24750b9ad5ef 722 int ret;
Christopher Haster 1:24750b9ad5ef 723 mbedtls_ecp_point K;
Christopher Haster 1:24750b9ad5ef 724 mbedtls_mpi m_xm2_s, one;
Christopher Haster 1:24750b9ad5ef 725 unsigned char kx[MBEDTLS_ECP_MAX_BYTES];
Christopher Haster 1:24750b9ad5ef 726 size_t x_bytes;
Christopher Haster 1:24750b9ad5ef 727
Christopher Haster 1:24750b9ad5ef 728 *olen = mbedtls_md_get_size( ctx->md_info );
Christopher Haster 1:24750b9ad5ef 729 if( len < *olen )
Christopher Haster 1:24750b9ad5ef 730 return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL );
Christopher Haster 1:24750b9ad5ef 731
Christopher Haster 1:24750b9ad5ef 732 mbedtls_ecp_point_init( &K );
Christopher Haster 1:24750b9ad5ef 733 mbedtls_mpi_init( &m_xm2_s );
Christopher Haster 1:24750b9ad5ef 734 mbedtls_mpi_init( &one );
Christopher Haster 1:24750b9ad5ef 735
Christopher Haster 1:24750b9ad5ef 736 MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &one, 1 ) );
Christopher Haster 1:24750b9ad5ef 737
Christopher Haster 1:24750b9ad5ef 738 /*
Christopher Haster 1:24750b9ad5ef 739 * Client: K = ( Xs - X4 * x2 * s ) * x2
Christopher Haster 1:24750b9ad5ef 740 * Server: K = ( Xc - X2 * x4 * s ) * x4
Christopher Haster 1:24750b9ad5ef 741 * Unified: K = ( Xp - Xp2 * xm2 * s ) * xm2
Christopher Haster 1:24750b9ad5ef 742 */
Christopher Haster 1:24750b9ad5ef 743 MBEDTLS_MPI_CHK( ecjpake_mul_secret( &m_xm2_s, -1, &ctx->xm2, &ctx->s,
Christopher Haster 1:24750b9ad5ef 744 &ctx->grp.N, f_rng, p_rng ) );
Christopher Haster 1:24750b9ad5ef 745 MBEDTLS_MPI_CHK( mbedtls_ecp_muladd( &ctx->grp, &K,
Christopher Haster 1:24750b9ad5ef 746 &one, &ctx->Xp,
Christopher Haster 1:24750b9ad5ef 747 &m_xm2_s, &ctx->Xp2 ) );
Christopher Haster 1:24750b9ad5ef 748 MBEDTLS_MPI_CHK( mbedtls_ecp_mul( &ctx->grp, &K, &ctx->xm2, &K,
Christopher Haster 1:24750b9ad5ef 749 f_rng, p_rng ) );
Christopher Haster 1:24750b9ad5ef 750
Christopher Haster 1:24750b9ad5ef 751 /* PMS = SHA-256( K.X ) */
Christopher Haster 1:24750b9ad5ef 752 x_bytes = ( ctx->grp.pbits + 7 ) / 8;
Christopher Haster 1:24750b9ad5ef 753 MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( &K.X, kx, x_bytes ) );
Christopher Haster 1:24750b9ad5ef 754 MBEDTLS_MPI_CHK( mbedtls_md( ctx->md_info, kx, x_bytes, buf ) );
Christopher Haster 1:24750b9ad5ef 755
Christopher Haster 1:24750b9ad5ef 756 cleanup:
Christopher Haster 1:24750b9ad5ef 757 mbedtls_ecp_point_free( &K );
Christopher Haster 1:24750b9ad5ef 758 mbedtls_mpi_free( &m_xm2_s );
Christopher Haster 1:24750b9ad5ef 759 mbedtls_mpi_free( &one );
Christopher Haster 1:24750b9ad5ef 760
Christopher Haster 1:24750b9ad5ef 761 return( ret );
Christopher Haster 1:24750b9ad5ef 762 }
Christopher Haster 1:24750b9ad5ef 763
Christopher Haster 1:24750b9ad5ef 764 #undef ID_MINE
Christopher Haster 1:24750b9ad5ef 765 #undef ID_PEER
Christopher Haster 1:24750b9ad5ef 766
Christopher Haster 1:24750b9ad5ef 767
Christopher Haster 1:24750b9ad5ef 768 #if defined(MBEDTLS_SELF_TEST)
Christopher Haster 1:24750b9ad5ef 769
Christopher Haster 1:24750b9ad5ef 770 #if defined(MBEDTLS_PLATFORM_C)
Christopher Haster 1:24750b9ad5ef 771 #include "mbedtls/platform.h"
Christopher Haster 1:24750b9ad5ef 772 #else
Christopher Haster 1:24750b9ad5ef 773 #include <stdio.h>
Christopher Haster 1:24750b9ad5ef 774 #define mbedtls_printf printf
Christopher Haster 1:24750b9ad5ef 775 #endif
Christopher Haster 1:24750b9ad5ef 776
Christopher Haster 1:24750b9ad5ef 777 #if !defined(MBEDTLS_ECP_DP_SECP256R1_ENABLED) || \
Christopher Haster 1:24750b9ad5ef 778 !defined(MBEDTLS_SHA256_C)
Christopher Haster 1:24750b9ad5ef 779 int mbedtls_ecjpake_self_test( int verbose )
Christopher Haster 1:24750b9ad5ef 780 {
Christopher Haster 1:24750b9ad5ef 781 (void) verbose;
Christopher Haster 1:24750b9ad5ef 782 return( 0 );
Christopher Haster 1:24750b9ad5ef 783 }
Christopher Haster 1:24750b9ad5ef 784 #else
Christopher Haster 1:24750b9ad5ef 785
Christopher Haster 1:24750b9ad5ef 786 static const unsigned char ecjpake_test_password[] = {
Christopher Haster 1:24750b9ad5ef 787 0x74, 0x68, 0x72, 0x65, 0x61, 0x64, 0x6a, 0x70, 0x61, 0x6b, 0x65, 0x74,
Christopher Haster 1:24750b9ad5ef 788 0x65, 0x73, 0x74
Christopher Haster 1:24750b9ad5ef 789 };
Christopher Haster 1:24750b9ad5ef 790
Christopher Haster 1:24750b9ad5ef 791 static const unsigned char ecjpake_test_x1[] = {
Christopher Haster 1:24750b9ad5ef 792 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c,
Christopher Haster 1:24750b9ad5ef 793 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18,
Christopher Haster 1:24750b9ad5ef 794 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x21
Christopher Haster 1:24750b9ad5ef 795 };
Christopher Haster 1:24750b9ad5ef 796
Christopher Haster 1:24750b9ad5ef 797 static const unsigned char ecjpake_test_x2[] = {
Christopher Haster 1:24750b9ad5ef 798 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c,
Christopher Haster 1:24750b9ad5ef 799 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
Christopher Haster 1:24750b9ad5ef 800 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x81
Christopher Haster 1:24750b9ad5ef 801 };
Christopher Haster 1:24750b9ad5ef 802
Christopher Haster 1:24750b9ad5ef 803 static const unsigned char ecjpake_test_x3[] = {
Christopher Haster 1:24750b9ad5ef 804 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c,
Christopher Haster 1:24750b9ad5ef 805 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
Christopher Haster 1:24750b9ad5ef 806 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x81
Christopher Haster 1:24750b9ad5ef 807 };
Christopher Haster 1:24750b9ad5ef 808
Christopher Haster 1:24750b9ad5ef 809 static const unsigned char ecjpake_test_x4[] = {
Christopher Haster 1:24750b9ad5ef 810 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc,
Christopher Haster 1:24750b9ad5ef 811 0xcd, 0xce, 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8,
Christopher Haster 1:24750b9ad5ef 812 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, 0xe1
Christopher Haster 1:24750b9ad5ef 813 };
Christopher Haster 1:24750b9ad5ef 814
Christopher Haster 1:24750b9ad5ef 815 static const unsigned char ecjpake_test_cli_one[] = {
Christopher Haster 1:24750b9ad5ef 816 0x41, 0x04, 0xac, 0xcf, 0x01, 0x06, 0xef, 0x85, 0x8f, 0xa2, 0xd9, 0x19,
Christopher Haster 1:24750b9ad5ef 817 0x33, 0x13, 0x46, 0x80, 0x5a, 0x78, 0xb5, 0x8b, 0xba, 0xd0, 0xb8, 0x44,
Christopher Haster 1:24750b9ad5ef 818 0xe5, 0xc7, 0x89, 0x28, 0x79, 0x14, 0x61, 0x87, 0xdd, 0x26, 0x66, 0xad,
Christopher Haster 1:24750b9ad5ef 819 0xa7, 0x81, 0xbb, 0x7f, 0x11, 0x13, 0x72, 0x25, 0x1a, 0x89, 0x10, 0x62,
Christopher Haster 1:24750b9ad5ef 820 0x1f, 0x63, 0x4d, 0xf1, 0x28, 0xac, 0x48, 0xe3, 0x81, 0xfd, 0x6e, 0xf9,
Christopher Haster 1:24750b9ad5ef 821 0x06, 0x07, 0x31, 0xf6, 0x94, 0xa4, 0x41, 0x04, 0x1d, 0xd0, 0xbd, 0x5d,
Christopher Haster 1:24750b9ad5ef 822 0x45, 0x66, 0xc9, 0xbe, 0xd9, 0xce, 0x7d, 0xe7, 0x01, 0xb5, 0xe8, 0x2e,
Christopher Haster 1:24750b9ad5ef 823 0x08, 0xe8, 0x4b, 0x73, 0x04, 0x66, 0x01, 0x8a, 0xb9, 0x03, 0xc7, 0x9e,
Christopher Haster 1:24750b9ad5ef 824 0xb9, 0x82, 0x17, 0x22, 0x36, 0xc0, 0xc1, 0x72, 0x8a, 0xe4, 0xbf, 0x73,
Christopher Haster 1:24750b9ad5ef 825 0x61, 0x0d, 0x34, 0xde, 0x44, 0x24, 0x6e, 0xf3, 0xd9, 0xc0, 0x5a, 0x22,
Christopher Haster 1:24750b9ad5ef 826 0x36, 0xfb, 0x66, 0xa6, 0x58, 0x3d, 0x74, 0x49, 0x30, 0x8b, 0xab, 0xce,
Christopher Haster 1:24750b9ad5ef 827 0x20, 0x72, 0xfe, 0x16, 0x66, 0x29, 0x92, 0xe9, 0x23, 0x5c, 0x25, 0x00,
Christopher Haster 1:24750b9ad5ef 828 0x2f, 0x11, 0xb1, 0x50, 0x87, 0xb8, 0x27, 0x38, 0xe0, 0x3c, 0x94, 0x5b,
Christopher Haster 1:24750b9ad5ef 829 0xf7, 0xa2, 0x99, 0x5d, 0xda, 0x1e, 0x98, 0x34, 0x58, 0x41, 0x04, 0x7e,
Christopher Haster 1:24750b9ad5ef 830 0xa6, 0xe3, 0xa4, 0x48, 0x70, 0x37, 0xa9, 0xe0, 0xdb, 0xd7, 0x92, 0x62,
Christopher Haster 1:24750b9ad5ef 831 0xb2, 0xcc, 0x27, 0x3e, 0x77, 0x99, 0x30, 0xfc, 0x18, 0x40, 0x9a, 0xc5,
Christopher Haster 1:24750b9ad5ef 832 0x36, 0x1c, 0x5f, 0xe6, 0x69, 0xd7, 0x02, 0xe1, 0x47, 0x79, 0x0a, 0xeb,
Christopher Haster 1:24750b9ad5ef 833 0x4c, 0xe7, 0xfd, 0x65, 0x75, 0xab, 0x0f, 0x6c, 0x7f, 0xd1, 0xc3, 0x35,
Christopher Haster 1:24750b9ad5ef 834 0x93, 0x9a, 0xa8, 0x63, 0xba, 0x37, 0xec, 0x91, 0xb7, 0xe3, 0x2b, 0xb0,
Christopher Haster 1:24750b9ad5ef 835 0x13, 0xbb, 0x2b, 0x41, 0x04, 0xa4, 0x95, 0x58, 0xd3, 0x2e, 0xd1, 0xeb,
Christopher Haster 1:24750b9ad5ef 836 0xfc, 0x18, 0x16, 0xaf, 0x4f, 0xf0, 0x9b, 0x55, 0xfc, 0xb4, 0xca, 0x47,
Christopher Haster 1:24750b9ad5ef 837 0xb2, 0xa0, 0x2d, 0x1e, 0x7c, 0xaf, 0x11, 0x79, 0xea, 0x3f, 0xe1, 0x39,
Christopher Haster 1:24750b9ad5ef 838 0x5b, 0x22, 0xb8, 0x61, 0x96, 0x40, 0x16, 0xfa, 0xba, 0xf7, 0x2c, 0x97,
Christopher Haster 1:24750b9ad5ef 839 0x56, 0x95, 0xd9, 0x3d, 0x4d, 0xf0, 0xe5, 0x19, 0x7f, 0xe9, 0xf0, 0x40,
Christopher Haster 1:24750b9ad5ef 840 0x63, 0x4e, 0xd5, 0x97, 0x64, 0x93, 0x77, 0x87, 0xbe, 0x20, 0xbc, 0x4d,
Christopher Haster 1:24750b9ad5ef 841 0xee, 0xbb, 0xf9, 0xb8, 0xd6, 0x0a, 0x33, 0x5f, 0x04, 0x6c, 0xa3, 0xaa,
Christopher Haster 1:24750b9ad5ef 842 0x94, 0x1e, 0x45, 0x86, 0x4c, 0x7c, 0xad, 0xef, 0x9c, 0xf7, 0x5b, 0x3d,
Christopher Haster 1:24750b9ad5ef 843 0x8b, 0x01, 0x0e, 0x44, 0x3e, 0xf0
Christopher Haster 1:24750b9ad5ef 844 };
Christopher Haster 1:24750b9ad5ef 845
Christopher Haster 1:24750b9ad5ef 846 static const unsigned char ecjpake_test_srv_one[] = {
Christopher Haster 1:24750b9ad5ef 847 0x41, 0x04, 0x7e, 0xa6, 0xe3, 0xa4, 0x48, 0x70, 0x37, 0xa9, 0xe0, 0xdb,
Christopher Haster 1:24750b9ad5ef 848 0xd7, 0x92, 0x62, 0xb2, 0xcc, 0x27, 0x3e, 0x77, 0x99, 0x30, 0xfc, 0x18,
Christopher Haster 1:24750b9ad5ef 849 0x40, 0x9a, 0xc5, 0x36, 0x1c, 0x5f, 0xe6, 0x69, 0xd7, 0x02, 0xe1, 0x47,
Christopher Haster 1:24750b9ad5ef 850 0x79, 0x0a, 0xeb, 0x4c, 0xe7, 0xfd, 0x65, 0x75, 0xab, 0x0f, 0x6c, 0x7f,
Christopher Haster 1:24750b9ad5ef 851 0xd1, 0xc3, 0x35, 0x93, 0x9a, 0xa8, 0x63, 0xba, 0x37, 0xec, 0x91, 0xb7,
Christopher Haster 1:24750b9ad5ef 852 0xe3, 0x2b, 0xb0, 0x13, 0xbb, 0x2b, 0x41, 0x04, 0x09, 0xf8, 0x5b, 0x3d,
Christopher Haster 1:24750b9ad5ef 853 0x20, 0xeb, 0xd7, 0x88, 0x5c, 0xe4, 0x64, 0xc0, 0x8d, 0x05, 0x6d, 0x64,
Christopher Haster 1:24750b9ad5ef 854 0x28, 0xfe, 0x4d, 0xd9, 0x28, 0x7a, 0xa3, 0x65, 0xf1, 0x31, 0xf4, 0x36,
Christopher Haster 1:24750b9ad5ef 855 0x0f, 0xf3, 0x86, 0xd8, 0x46, 0x89, 0x8b, 0xc4, 0xb4, 0x15, 0x83, 0xc2,
Christopher Haster 1:24750b9ad5ef 856 0xa5, 0x19, 0x7f, 0x65, 0xd7, 0x87, 0x42, 0x74, 0x6c, 0x12, 0xa5, 0xec,
Christopher Haster 1:24750b9ad5ef 857 0x0a, 0x4f, 0xfe, 0x2f, 0x27, 0x0a, 0x75, 0x0a, 0x1d, 0x8f, 0xb5, 0x16,
Christopher Haster 1:24750b9ad5ef 858 0x20, 0x93, 0x4d, 0x74, 0xeb, 0x43, 0xe5, 0x4d, 0xf4, 0x24, 0xfd, 0x96,
Christopher Haster 1:24750b9ad5ef 859 0x30, 0x6c, 0x01, 0x17, 0xbf, 0x13, 0x1a, 0xfa, 0xbf, 0x90, 0xa9, 0xd3,
Christopher Haster 1:24750b9ad5ef 860 0x3d, 0x11, 0x98, 0xd9, 0x05, 0x19, 0x37, 0x35, 0x14, 0x41, 0x04, 0x19,
Christopher Haster 1:24750b9ad5ef 861 0x0a, 0x07, 0x70, 0x0f, 0xfa, 0x4b, 0xe6, 0xae, 0x1d, 0x79, 0xee, 0x0f,
Christopher Haster 1:24750b9ad5ef 862 0x06, 0xae, 0xb5, 0x44, 0xcd, 0x5a, 0xdd, 0xaa, 0xbe, 0xdf, 0x70, 0xf8,
Christopher Haster 1:24750b9ad5ef 863 0x62, 0x33, 0x21, 0x33, 0x2c, 0x54, 0xf3, 0x55, 0xf0, 0xfb, 0xfe, 0xc7,
Christopher Haster 1:24750b9ad5ef 864 0x83, 0xed, 0x35, 0x9e, 0x5d, 0x0b, 0xf7, 0x37, 0x7a, 0x0f, 0xc4, 0xea,
Christopher Haster 1:24750b9ad5ef 865 0x7a, 0xce, 0x47, 0x3c, 0x9c, 0x11, 0x2b, 0x41, 0xcc, 0xd4, 0x1a, 0xc5,
Christopher Haster 1:24750b9ad5ef 866 0x6a, 0x56, 0x12, 0x41, 0x04, 0x36, 0x0a, 0x1c, 0xea, 0x33, 0xfc, 0xe6,
Christopher Haster 1:24750b9ad5ef 867 0x41, 0x15, 0x64, 0x58, 0xe0, 0xa4, 0xea, 0xc2, 0x19, 0xe9, 0x68, 0x31,
Christopher Haster 1:24750b9ad5ef 868 0xe6, 0xae, 0xbc, 0x88, 0xb3, 0xf3, 0x75, 0x2f, 0x93, 0xa0, 0x28, 0x1d,
Christopher Haster 1:24750b9ad5ef 869 0x1b, 0xf1, 0xfb, 0x10, 0x60, 0x51, 0xdb, 0x96, 0x94, 0xa8, 0xd6, 0xe8,
Christopher Haster 1:24750b9ad5ef 870 0x62, 0xa5, 0xef, 0x13, 0x24, 0xa3, 0xd9, 0xe2, 0x78, 0x94, 0xf1, 0xee,
Christopher Haster 1:24750b9ad5ef 871 0x4f, 0x7c, 0x59, 0x19, 0x99, 0x65, 0xa8, 0xdd, 0x4a, 0x20, 0x91, 0x84,
Christopher Haster 1:24750b9ad5ef 872 0x7d, 0x2d, 0x22, 0xdf, 0x3e, 0xe5, 0x5f, 0xaa, 0x2a, 0x3f, 0xb3, 0x3f,
Christopher Haster 1:24750b9ad5ef 873 0xd2, 0xd1, 0xe0, 0x55, 0xa0, 0x7a, 0x7c, 0x61, 0xec, 0xfb, 0x8d, 0x80,
Christopher Haster 1:24750b9ad5ef 874 0xec, 0x00, 0xc2, 0xc9, 0xeb, 0x12
Christopher Haster 1:24750b9ad5ef 875 };
Christopher Haster 1:24750b9ad5ef 876
Christopher Haster 1:24750b9ad5ef 877 static const unsigned char ecjpake_test_srv_two[] = {
Christopher Haster 1:24750b9ad5ef 878 0x03, 0x00, 0x17, 0x41, 0x04, 0x0f, 0xb2, 0x2b, 0x1d, 0x5d, 0x11, 0x23,
Christopher Haster 1:24750b9ad5ef 879 0xe0, 0xef, 0x9f, 0xeb, 0x9d, 0x8a, 0x2e, 0x59, 0x0a, 0x1f, 0x4d, 0x7c,
Christopher Haster 1:24750b9ad5ef 880 0xed, 0x2c, 0x2b, 0x06, 0x58, 0x6e, 0x8f, 0x2a, 0x16, 0xd4, 0xeb, 0x2f,
Christopher Haster 1:24750b9ad5ef 881 0xda, 0x43, 0x28, 0xa2, 0x0b, 0x07, 0xd8, 0xfd, 0x66, 0x76, 0x54, 0xca,
Christopher Haster 1:24750b9ad5ef 882 0x18, 0xc5, 0x4e, 0x32, 0xa3, 0x33, 0xa0, 0x84, 0x54, 0x51, 0xe9, 0x26,
Christopher Haster 1:24750b9ad5ef 883 0xee, 0x88, 0x04, 0xfd, 0x7a, 0xf0, 0xaa, 0xa7, 0xa6, 0x41, 0x04, 0x55,
Christopher Haster 1:24750b9ad5ef 884 0x16, 0xea, 0x3e, 0x54, 0xa0, 0xd5, 0xd8, 0xb2, 0xce, 0x78, 0x6b, 0x38,
Christopher Haster 1:24750b9ad5ef 885 0xd3, 0x83, 0x37, 0x00, 0x29, 0xa5, 0xdb, 0xe4, 0x45, 0x9c, 0x9d, 0xd6,
Christopher Haster 1:24750b9ad5ef 886 0x01, 0xb4, 0x08, 0xa2, 0x4a, 0xe6, 0x46, 0x5c, 0x8a, 0xc9, 0x05, 0xb9,
Christopher Haster 1:24750b9ad5ef 887 0xeb, 0x03, 0xb5, 0xd3, 0x69, 0x1c, 0x13, 0x9e, 0xf8, 0x3f, 0x1c, 0xd4,
Christopher Haster 1:24750b9ad5ef 888 0x20, 0x0f, 0x6c, 0x9c, 0xd4, 0xec, 0x39, 0x22, 0x18, 0xa5, 0x9e, 0xd2,
Christopher Haster 1:24750b9ad5ef 889 0x43, 0xd3, 0xc8, 0x20, 0xff, 0x72, 0x4a, 0x9a, 0x70, 0xb8, 0x8c, 0xb8,
Christopher Haster 1:24750b9ad5ef 890 0x6f, 0x20, 0xb4, 0x34, 0xc6, 0x86, 0x5a, 0xa1, 0xcd, 0x79, 0x06, 0xdd,
Christopher Haster 1:24750b9ad5ef 891 0x7c, 0x9b, 0xce, 0x35, 0x25, 0xf5, 0x08, 0x27, 0x6f, 0x26, 0x83, 0x6c
Christopher Haster 1:24750b9ad5ef 892 };
Christopher Haster 1:24750b9ad5ef 893
Christopher Haster 1:24750b9ad5ef 894 static const unsigned char ecjpake_test_cli_two[] = {
Christopher Haster 1:24750b9ad5ef 895 0x41, 0x04, 0x69, 0xd5, 0x4e, 0xe8, 0x5e, 0x90, 0xce, 0x3f, 0x12, 0x46,
Christopher Haster 1:24750b9ad5ef 896 0x74, 0x2d, 0xe5, 0x07, 0xe9, 0x39, 0xe8, 0x1d, 0x1d, 0xc1, 0xc5, 0xcb,
Christopher Haster 1:24750b9ad5ef 897 0x98, 0x8b, 0x58, 0xc3, 0x10, 0xc9, 0xfd, 0xd9, 0x52, 0x4d, 0x93, 0x72,
Christopher Haster 1:24750b9ad5ef 898 0x0b, 0x45, 0x54, 0x1c, 0x83, 0xee, 0x88, 0x41, 0x19, 0x1d, 0xa7, 0xce,
Christopher Haster 1:24750b9ad5ef 899 0xd8, 0x6e, 0x33, 0x12, 0xd4, 0x36, 0x23, 0xc1, 0xd6, 0x3e, 0x74, 0x98,
Christopher Haster 1:24750b9ad5ef 900 0x9a, 0xba, 0x4a, 0xff, 0xd1, 0xee, 0x41, 0x04, 0x07, 0x7e, 0x8c, 0x31,
Christopher Haster 1:24750b9ad5ef 901 0xe2, 0x0e, 0x6b, 0xed, 0xb7, 0x60, 0xc1, 0x35, 0x93, 0xe6, 0x9f, 0x15,
Christopher Haster 1:24750b9ad5ef 902 0xbe, 0x85, 0xc2, 0x7d, 0x68, 0xcd, 0x09, 0xcc, 0xb8, 0xc4, 0x18, 0x36,
Christopher Haster 1:24750b9ad5ef 903 0x08, 0x91, 0x7c, 0x5c, 0x3d, 0x40, 0x9f, 0xac, 0x39, 0xfe, 0xfe, 0xe8,
Christopher Haster 1:24750b9ad5ef 904 0x2f, 0x72, 0x92, 0xd3, 0x6f, 0x0d, 0x23, 0xe0, 0x55, 0x91, 0x3f, 0x45,
Christopher Haster 1:24750b9ad5ef 905 0xa5, 0x2b, 0x85, 0xdd, 0x8a, 0x20, 0x52, 0xe9, 0xe1, 0x29, 0xbb, 0x4d,
Christopher Haster 1:24750b9ad5ef 906 0x20, 0x0f, 0x01, 0x1f, 0x19, 0x48, 0x35, 0x35, 0xa6, 0xe8, 0x9a, 0x58,
Christopher Haster 1:24750b9ad5ef 907 0x0c, 0x9b, 0x00, 0x03, 0xba, 0xf2, 0x14, 0x62, 0xec, 0xe9, 0x1a, 0x82,
Christopher Haster 1:24750b9ad5ef 908 0xcc, 0x38, 0xdb, 0xdc, 0xae, 0x60, 0xd9, 0xc5, 0x4c
Christopher Haster 1:24750b9ad5ef 909 };
Christopher Haster 1:24750b9ad5ef 910
Christopher Haster 1:24750b9ad5ef 911 static const unsigned char ecjpake_test_pms[] = {
Christopher Haster 1:24750b9ad5ef 912 0xf3, 0xd4, 0x7f, 0x59, 0x98, 0x44, 0xdb, 0x92, 0xa5, 0x69, 0xbb, 0xe7,
Christopher Haster 1:24750b9ad5ef 913 0x98, 0x1e, 0x39, 0xd9, 0x31, 0xfd, 0x74, 0x3b, 0xf2, 0x2e, 0x98, 0xf9,
Christopher Haster 1:24750b9ad5ef 914 0xb4, 0x38, 0xf7, 0x19, 0xd3, 0xc4, 0xf3, 0x51
Christopher Haster 1:24750b9ad5ef 915 };
Christopher Haster 1:24750b9ad5ef 916
Christopher Haster 1:24750b9ad5ef 917 /* Load my private keys and generate the correponding public keys */
Christopher Haster 1:24750b9ad5ef 918 static int ecjpake_test_load( mbedtls_ecjpake_context *ctx,
Christopher Haster 1:24750b9ad5ef 919 const unsigned char *xm1, size_t len1,
Christopher Haster 1:24750b9ad5ef 920 const unsigned char *xm2, size_t len2 )
Christopher Haster 1:24750b9ad5ef 921 {
Christopher Haster 1:24750b9ad5ef 922 int ret;
Christopher Haster 1:24750b9ad5ef 923
Christopher Haster 1:24750b9ad5ef 924 MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( &ctx->xm1, xm1, len1 ) );
Christopher Haster 1:24750b9ad5ef 925 MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( &ctx->xm2, xm2, len2 ) );
Christopher Haster 1:24750b9ad5ef 926 MBEDTLS_MPI_CHK( mbedtls_ecp_mul( &ctx->grp, &ctx->Xm1, &ctx->xm1,
Christopher Haster 1:24750b9ad5ef 927 &ctx->grp.G, NULL, NULL ) );
Christopher Haster 1:24750b9ad5ef 928 MBEDTLS_MPI_CHK( mbedtls_ecp_mul( &ctx->grp, &ctx->Xm2, &ctx->xm2,
Christopher Haster 1:24750b9ad5ef 929 &ctx->grp.G, NULL, NULL ) );
Christopher Haster 1:24750b9ad5ef 930
Christopher Haster 1:24750b9ad5ef 931 cleanup:
Christopher Haster 1:24750b9ad5ef 932 return( ret );
Christopher Haster 1:24750b9ad5ef 933 }
Christopher Haster 1:24750b9ad5ef 934
Christopher Haster 1:24750b9ad5ef 935 /* For tests we don't need a secure RNG;
Christopher Haster 1:24750b9ad5ef 936 * use the LGC from Numerical Recipes for simplicity */
Christopher Haster 1:24750b9ad5ef 937 static int ecjpake_lgc( void *p, unsigned char *out, size_t len )
Christopher Haster 1:24750b9ad5ef 938 {
Christopher Haster 1:24750b9ad5ef 939 static uint32_t x = 42;
Christopher Haster 1:24750b9ad5ef 940 (void) p;
Christopher Haster 1:24750b9ad5ef 941
Christopher Haster 1:24750b9ad5ef 942 while( len > 0 )
Christopher Haster 1:24750b9ad5ef 943 {
Christopher Haster 1:24750b9ad5ef 944 size_t use_len = len > 4 ? 4 : len;
Christopher Haster 1:24750b9ad5ef 945 x = 1664525 * x + 1013904223;
Christopher Haster 1:24750b9ad5ef 946 memcpy( out, &x, use_len );
Christopher Haster 1:24750b9ad5ef 947 out += use_len;
Christopher Haster 1:24750b9ad5ef 948 len -= use_len;
Christopher Haster 1:24750b9ad5ef 949 }
Christopher Haster 1:24750b9ad5ef 950
Christopher Haster 1:24750b9ad5ef 951 return( 0 );
Christopher Haster 1:24750b9ad5ef 952 }
Christopher Haster 1:24750b9ad5ef 953
Christopher Haster 1:24750b9ad5ef 954 #define TEST_ASSERT( x ) \
Christopher Haster 1:24750b9ad5ef 955 do { \
Christopher Haster 1:24750b9ad5ef 956 if( x ) \
Christopher Haster 1:24750b9ad5ef 957 ret = 0; \
Christopher Haster 1:24750b9ad5ef 958 else \
Christopher Haster 1:24750b9ad5ef 959 { \
Christopher Haster 1:24750b9ad5ef 960 ret = 1; \
Christopher Haster 1:24750b9ad5ef 961 goto cleanup; \
Christopher Haster 1:24750b9ad5ef 962 } \
Christopher Haster 1:24750b9ad5ef 963 } while( 0 )
Christopher Haster 1:24750b9ad5ef 964
Christopher Haster 1:24750b9ad5ef 965 /*
Christopher Haster 1:24750b9ad5ef 966 * Checkup routine
Christopher Haster 1:24750b9ad5ef 967 */
Christopher Haster 1:24750b9ad5ef 968 int mbedtls_ecjpake_self_test( int verbose )
Christopher Haster 1:24750b9ad5ef 969 {
Christopher Haster 1:24750b9ad5ef 970 int ret;
Christopher Haster 1:24750b9ad5ef 971 mbedtls_ecjpake_context cli;
Christopher Haster 1:24750b9ad5ef 972 mbedtls_ecjpake_context srv;
Christopher Haster 1:24750b9ad5ef 973 unsigned char buf[512], pms[32];
Christopher Haster 1:24750b9ad5ef 974 size_t len, pmslen;
Christopher Haster 1:24750b9ad5ef 975
Christopher Haster 1:24750b9ad5ef 976 mbedtls_ecjpake_init( &cli );
Christopher Haster 1:24750b9ad5ef 977 mbedtls_ecjpake_init( &srv );
Christopher Haster 1:24750b9ad5ef 978
Christopher Haster 1:24750b9ad5ef 979 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 980 mbedtls_printf( " ECJPAKE test #0 (setup): " );
Christopher Haster 1:24750b9ad5ef 981
Christopher Haster 1:24750b9ad5ef 982 TEST_ASSERT( mbedtls_ecjpake_setup( &cli, MBEDTLS_ECJPAKE_CLIENT,
Christopher Haster 1:24750b9ad5ef 983 MBEDTLS_MD_SHA256, MBEDTLS_ECP_DP_SECP256R1,
Christopher Haster 1:24750b9ad5ef 984 ecjpake_test_password,
Christopher Haster 1:24750b9ad5ef 985 sizeof( ecjpake_test_password ) ) == 0 );
Christopher Haster 1:24750b9ad5ef 986
Christopher Haster 1:24750b9ad5ef 987 TEST_ASSERT( mbedtls_ecjpake_setup( &srv, MBEDTLS_ECJPAKE_SERVER,
Christopher Haster 1:24750b9ad5ef 988 MBEDTLS_MD_SHA256, MBEDTLS_ECP_DP_SECP256R1,
Christopher Haster 1:24750b9ad5ef 989 ecjpake_test_password,
Christopher Haster 1:24750b9ad5ef 990 sizeof( ecjpake_test_password ) ) == 0 );
Christopher Haster 1:24750b9ad5ef 991
Christopher Haster 1:24750b9ad5ef 992 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 993 mbedtls_printf( "passed\n" );
Christopher Haster 1:24750b9ad5ef 994
Christopher Haster 1:24750b9ad5ef 995 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 996 mbedtls_printf( " ECJPAKE test #1 (random handshake): " );
Christopher Haster 1:24750b9ad5ef 997
Christopher Haster 1:24750b9ad5ef 998 TEST_ASSERT( mbedtls_ecjpake_write_round_one( &cli,
Christopher Haster 1:24750b9ad5ef 999 buf, sizeof( buf ), &len, ecjpake_lgc, NULL ) == 0 );
Christopher Haster 1:24750b9ad5ef 1000
Christopher Haster 1:24750b9ad5ef 1001 TEST_ASSERT( mbedtls_ecjpake_read_round_one( &srv, buf, len ) == 0 );
Christopher Haster 1:24750b9ad5ef 1002
Christopher Haster 1:24750b9ad5ef 1003 TEST_ASSERT( mbedtls_ecjpake_write_round_one( &srv,
Christopher Haster 1:24750b9ad5ef 1004 buf, sizeof( buf ), &len, ecjpake_lgc, NULL ) == 0 );
Christopher Haster 1:24750b9ad5ef 1005
Christopher Haster 1:24750b9ad5ef 1006 TEST_ASSERT( mbedtls_ecjpake_read_round_one( &cli, buf, len ) == 0 );
Christopher Haster 1:24750b9ad5ef 1007
Christopher Haster 1:24750b9ad5ef 1008 TEST_ASSERT( mbedtls_ecjpake_write_round_two( &srv,
Christopher Haster 1:24750b9ad5ef 1009 buf, sizeof( buf ), &len, ecjpake_lgc, NULL ) == 0 );
Christopher Haster 1:24750b9ad5ef 1010
Christopher Haster 1:24750b9ad5ef 1011 TEST_ASSERT( mbedtls_ecjpake_read_round_two( &cli, buf, len ) == 0 );
Christopher Haster 1:24750b9ad5ef 1012
Christopher Haster 1:24750b9ad5ef 1013 TEST_ASSERT( mbedtls_ecjpake_derive_secret( &cli,
Christopher Haster 1:24750b9ad5ef 1014 pms, sizeof( pms ), &pmslen, ecjpake_lgc, NULL ) == 0 );
Christopher Haster 1:24750b9ad5ef 1015
Christopher Haster 1:24750b9ad5ef 1016 TEST_ASSERT( mbedtls_ecjpake_write_round_two( &cli,
Christopher Haster 1:24750b9ad5ef 1017 buf, sizeof( buf ), &len, ecjpake_lgc, NULL ) == 0 );
Christopher Haster 1:24750b9ad5ef 1018
Christopher Haster 1:24750b9ad5ef 1019 TEST_ASSERT( mbedtls_ecjpake_read_round_two( &srv, buf, len ) == 0 );
Christopher Haster 1:24750b9ad5ef 1020
Christopher Haster 1:24750b9ad5ef 1021 TEST_ASSERT( mbedtls_ecjpake_derive_secret( &srv,
Christopher Haster 1:24750b9ad5ef 1022 buf, sizeof( buf ), &len, ecjpake_lgc, NULL ) == 0 );
Christopher Haster 1:24750b9ad5ef 1023
Christopher Haster 1:24750b9ad5ef 1024 TEST_ASSERT( len == pmslen );
Christopher Haster 1:24750b9ad5ef 1025 TEST_ASSERT( memcmp( buf, pms, len ) == 0 );
Christopher Haster 1:24750b9ad5ef 1026
Christopher Haster 1:24750b9ad5ef 1027 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 1028 mbedtls_printf( "passed\n" );
Christopher Haster 1:24750b9ad5ef 1029
Christopher Haster 1:24750b9ad5ef 1030 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 1031 mbedtls_printf( " ECJPAKE test #2 (reference handshake): " );
Christopher Haster 1:24750b9ad5ef 1032
Christopher Haster 1:24750b9ad5ef 1033 /* Simulate generation of round one */
Christopher Haster 1:24750b9ad5ef 1034 MBEDTLS_MPI_CHK( ecjpake_test_load( &cli,
Christopher Haster 1:24750b9ad5ef 1035 ecjpake_test_x1, sizeof( ecjpake_test_x1 ),
Christopher Haster 1:24750b9ad5ef 1036 ecjpake_test_x2, sizeof( ecjpake_test_x2 ) ) );
Christopher Haster 1:24750b9ad5ef 1037
Christopher Haster 1:24750b9ad5ef 1038 MBEDTLS_MPI_CHK( ecjpake_test_load( &srv,
Christopher Haster 1:24750b9ad5ef 1039 ecjpake_test_x3, sizeof( ecjpake_test_x3 ),
Christopher Haster 1:24750b9ad5ef 1040 ecjpake_test_x4, sizeof( ecjpake_test_x4 ) ) );
Christopher Haster 1:24750b9ad5ef 1041
Christopher Haster 1:24750b9ad5ef 1042 /* Read round one */
Christopher Haster 1:24750b9ad5ef 1043 TEST_ASSERT( mbedtls_ecjpake_read_round_one( &srv,
Christopher Haster 1:24750b9ad5ef 1044 ecjpake_test_cli_one,
Christopher Haster 1:24750b9ad5ef 1045 sizeof( ecjpake_test_cli_one ) ) == 0 );
Christopher Haster 1:24750b9ad5ef 1046
Christopher Haster 1:24750b9ad5ef 1047 TEST_ASSERT( mbedtls_ecjpake_read_round_one( &cli,
Christopher Haster 1:24750b9ad5ef 1048 ecjpake_test_srv_one,
Christopher Haster 1:24750b9ad5ef 1049 sizeof( ecjpake_test_srv_one ) ) == 0 );
Christopher Haster 1:24750b9ad5ef 1050
Christopher Haster 1:24750b9ad5ef 1051 /* Skip generation of round two, read round two */
Christopher Haster 1:24750b9ad5ef 1052 TEST_ASSERT( mbedtls_ecjpake_read_round_two( &cli,
Christopher Haster 1:24750b9ad5ef 1053 ecjpake_test_srv_two,
Christopher Haster 1:24750b9ad5ef 1054 sizeof( ecjpake_test_srv_two ) ) == 0 );
Christopher Haster 1:24750b9ad5ef 1055
Christopher Haster 1:24750b9ad5ef 1056 TEST_ASSERT( mbedtls_ecjpake_read_round_two( &srv,
Christopher Haster 1:24750b9ad5ef 1057 ecjpake_test_cli_two,
Christopher Haster 1:24750b9ad5ef 1058 sizeof( ecjpake_test_cli_two ) ) == 0 );
Christopher Haster 1:24750b9ad5ef 1059
Christopher Haster 1:24750b9ad5ef 1060 /* Server derives PMS */
Christopher Haster 1:24750b9ad5ef 1061 TEST_ASSERT( mbedtls_ecjpake_derive_secret( &srv,
Christopher Haster 1:24750b9ad5ef 1062 buf, sizeof( buf ), &len, ecjpake_lgc, NULL ) == 0 );
Christopher Haster 1:24750b9ad5ef 1063
Christopher Haster 1:24750b9ad5ef 1064 TEST_ASSERT( len == sizeof( ecjpake_test_pms ) );
Christopher Haster 1:24750b9ad5ef 1065 TEST_ASSERT( memcmp( buf, ecjpake_test_pms, len ) == 0 );
Christopher Haster 1:24750b9ad5ef 1066
Christopher Haster 1:24750b9ad5ef 1067 memset( buf, 0, len ); /* Avoid interferences with next step */
Christopher Haster 1:24750b9ad5ef 1068
Christopher Haster 1:24750b9ad5ef 1069 /* Client derives PMS */
Christopher Haster 1:24750b9ad5ef 1070 TEST_ASSERT( mbedtls_ecjpake_derive_secret( &cli,
Christopher Haster 1:24750b9ad5ef 1071 buf, sizeof( buf ), &len, ecjpake_lgc, NULL ) == 0 );
Christopher Haster 1:24750b9ad5ef 1072
Christopher Haster 1:24750b9ad5ef 1073 TEST_ASSERT( len == sizeof( ecjpake_test_pms ) );
Christopher Haster 1:24750b9ad5ef 1074 TEST_ASSERT( memcmp( buf, ecjpake_test_pms, len ) == 0 );
Christopher Haster 1:24750b9ad5ef 1075
Christopher Haster 1:24750b9ad5ef 1076 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 1077 mbedtls_printf( "passed\n" );
Christopher Haster 1:24750b9ad5ef 1078
Christopher Haster 1:24750b9ad5ef 1079 cleanup:
Christopher Haster 1:24750b9ad5ef 1080 mbedtls_ecjpake_free( &cli );
Christopher Haster 1:24750b9ad5ef 1081 mbedtls_ecjpake_free( &srv );
Christopher Haster 1:24750b9ad5ef 1082
Christopher Haster 1:24750b9ad5ef 1083 if( ret != 0 )
Christopher Haster 1:24750b9ad5ef 1084 {
Christopher Haster 1:24750b9ad5ef 1085 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 1086 mbedtls_printf( "failed\n" );
Christopher Haster 1:24750b9ad5ef 1087
Christopher Haster 1:24750b9ad5ef 1088 ret = 1;
Christopher Haster 1:24750b9ad5ef 1089 }
Christopher Haster 1:24750b9ad5ef 1090
Christopher Haster 1:24750b9ad5ef 1091 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 1092 mbedtls_printf( "\n" );
Christopher Haster 1:24750b9ad5ef 1093
Christopher Haster 1:24750b9ad5ef 1094 return( ret );
Christopher Haster 1:24750b9ad5ef 1095 }
Christopher Haster 1:24750b9ad5ef 1096
Christopher Haster 1:24750b9ad5ef 1097 #undef TEST_ASSERT
Christopher Haster 1:24750b9ad5ef 1098
Christopher Haster 1:24750b9ad5ef 1099 #endif /* MBEDTLS_ECP_DP_SECP256R1_ENABLED && MBEDTLS_SHA256_C */
Christopher Haster 1:24750b9ad5ef 1100
Christopher Haster 1:24750b9ad5ef 1101 #endif /* MBEDTLS_SELF_TEST */
Christopher Haster 1:24750b9ad5ef 1102
Christopher Haster 1:24750b9ad5ef 1103 #endif /* MBEDTLS_ECJPAKE_C */