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author | Adam Harrison <adamdharrison@gmail.com> | 2023-07-06 06:37:41 -0400 |
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committer | Adam Harrison <adamdharrison@gmail.com> | 2023-07-06 06:37:41 -0400 |
commit | 9db10386430479067795bec66bb26343ff176ded (patch) | |
tree | 5ad0cf95abde7cf03afaf8f70af8549d46b09a46 /lib/mbedtls-2.27.0/library/ecjpake.c | |
parent | 57092d80cb07fa1a84873769fa92165426196054 (diff) | |
download | lite-xl-plugin-manager-9db10386430479067795bec66bb26343ff176ded.tar.gz lite-xl-plugin-manager-9db10386430479067795bec66bb26343ff176ded.zip |
Removed old mbedtls, replacing with submodule.
Diffstat (limited to 'lib/mbedtls-2.27.0/library/ecjpake.c')
-rw-r--r-- | lib/mbedtls-2.27.0/library/ecjpake.c | 1146 |
1 files changed, 0 insertions, 1146 deletions
diff --git a/lib/mbedtls-2.27.0/library/ecjpake.c b/lib/mbedtls-2.27.0/library/ecjpake.c deleted file mode 100644 index 464ff51..0000000 --- a/lib/mbedtls-2.27.0/library/ecjpake.c +++ /dev/null @@ -1,1146 +0,0 @@ -/* - * Elliptic curve J-PAKE - * - * Copyright The Mbed TLS Contributors - * SPDX-License-Identifier: Apache-2.0 - * - * Licensed under the Apache License, Version 2.0 (the "License"); you may - * not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT - * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -/* - * References in the code are to the Thread v1.0 Specification, - * available to members of the Thread Group http://threadgroup.org/ - */ - -#include "common.h" - -#if defined(MBEDTLS_ECJPAKE_C) - -#include "mbedtls/ecjpake.h" -#include "mbedtls/platform_util.h" -#include "mbedtls/error.h" - -#include <string.h> - -#if !defined(MBEDTLS_ECJPAKE_ALT) - -/* Parameter validation macros based on platform_util.h */ -#define ECJPAKE_VALIDATE_RET( cond ) \ - MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_ECP_BAD_INPUT_DATA ) -#define ECJPAKE_VALIDATE( cond ) \ - MBEDTLS_INTERNAL_VALIDATE( cond ) - -/* - * Convert a mbedtls_ecjpake_role to identifier string - */ -static const char * const ecjpake_id[] = { - "client", - "server" -}; - -#define ID_MINE ( ecjpake_id[ ctx->role ] ) -#define ID_PEER ( ecjpake_id[ 1 - ctx->role ] ) - -/* - * Initialize context - */ -void mbedtls_ecjpake_init( mbedtls_ecjpake_context *ctx ) -{ - ECJPAKE_VALIDATE( ctx != NULL ); - - ctx->md_info = NULL; - mbedtls_ecp_group_init( &ctx->grp ); - ctx->point_format = MBEDTLS_ECP_PF_UNCOMPRESSED; - - mbedtls_ecp_point_init( &ctx->Xm1 ); - mbedtls_ecp_point_init( &ctx->Xm2 ); - mbedtls_ecp_point_init( &ctx->Xp1 ); - mbedtls_ecp_point_init( &ctx->Xp2 ); - mbedtls_ecp_point_init( &ctx->Xp ); - - mbedtls_mpi_init( &ctx->xm1 ); - mbedtls_mpi_init( &ctx->xm2 ); - mbedtls_mpi_init( &ctx->s ); -} - -/* - * Free context - */ -void mbedtls_ecjpake_free( mbedtls_ecjpake_context *ctx ) -{ - if( ctx == NULL ) - return; - - ctx->md_info = NULL; - mbedtls_ecp_group_free( &ctx->grp ); - - mbedtls_ecp_point_free( &ctx->Xm1 ); - mbedtls_ecp_point_free( &ctx->Xm2 ); - mbedtls_ecp_point_free( &ctx->Xp1 ); - mbedtls_ecp_point_free( &ctx->Xp2 ); - mbedtls_ecp_point_free( &ctx->Xp ); - - mbedtls_mpi_free( &ctx->xm1 ); - mbedtls_mpi_free( &ctx->xm2 ); - mbedtls_mpi_free( &ctx->s ); -} - -/* - * Setup context - */ -int mbedtls_ecjpake_setup( mbedtls_ecjpake_context *ctx, - mbedtls_ecjpake_role role, - mbedtls_md_type_t hash, - mbedtls_ecp_group_id curve, - const unsigned char *secret, - size_t len ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - - ECJPAKE_VALIDATE_RET( ctx != NULL ); - ECJPAKE_VALIDATE_RET( role == MBEDTLS_ECJPAKE_CLIENT || - role == MBEDTLS_ECJPAKE_SERVER ); - ECJPAKE_VALIDATE_RET( secret != NULL || len == 0 ); - - ctx->role = role; - - if( ( ctx->md_info = mbedtls_md_info_from_type( hash ) ) == NULL ) - return( MBEDTLS_ERR_MD_FEATURE_UNAVAILABLE ); - - MBEDTLS_MPI_CHK( mbedtls_ecp_group_load( &ctx->grp, curve ) ); - - MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( &ctx->s, secret, len ) ); - -cleanup: - if( ret != 0 ) - mbedtls_ecjpake_free( ctx ); - - return( ret ); -} - -/* - * Check if context is ready for use - */ -int mbedtls_ecjpake_check( const mbedtls_ecjpake_context *ctx ) -{ - ECJPAKE_VALIDATE_RET( ctx != NULL ); - - if( ctx->md_info == NULL || - ctx->grp.id == MBEDTLS_ECP_DP_NONE || - ctx->s.p == NULL ) - { - return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA ); - } - - return( 0 ); -} - -/* - * Write a point plus its length to a buffer - */ -static int ecjpake_write_len_point( unsigned char **p, - const unsigned char *end, - const mbedtls_ecp_group *grp, - const int pf, - const mbedtls_ecp_point *P ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - size_t len; - - /* Need at least 4 for length plus 1 for point */ - if( end < *p || end - *p < 5 ) - return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL ); - - ret = mbedtls_ecp_point_write_binary( grp, P, pf, - &len, *p + 4, end - ( *p + 4 ) ); - if( ret != 0 ) - return( ret ); - - (*p)[0] = (unsigned char)( ( len >> 24 ) & 0xFF ); - (*p)[1] = (unsigned char)( ( len >> 16 ) & 0xFF ); - (*p)[2] = (unsigned char)( ( len >> 8 ) & 0xFF ); - (*p)[3] = (unsigned char)( ( len ) & 0xFF ); - - *p += 4 + len; - - return( 0 ); -} - -/* - * Size of the temporary buffer for ecjpake_hash: - * 3 EC points plus their length, plus ID and its length (4 + 6 bytes) - */ -#define ECJPAKE_HASH_BUF_LEN ( 3 * ( 4 + MBEDTLS_ECP_MAX_PT_LEN ) + 4 + 6 ) - -/* - * Compute hash for ZKP (7.4.2.2.2.1) - */ -static int ecjpake_hash( const mbedtls_md_info_t *md_info, - const mbedtls_ecp_group *grp, - const int pf, - const mbedtls_ecp_point *G, - const mbedtls_ecp_point *V, - const mbedtls_ecp_point *X, - const char *id, - mbedtls_mpi *h ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - unsigned char buf[ECJPAKE_HASH_BUF_LEN]; - unsigned char *p = buf; - const unsigned char *end = buf + sizeof( buf ); - const size_t id_len = strlen( id ); - unsigned char hash[MBEDTLS_MD_MAX_SIZE]; - - /* Write things to temporary buffer */ - MBEDTLS_MPI_CHK( ecjpake_write_len_point( &p, end, grp, pf, G ) ); - MBEDTLS_MPI_CHK( ecjpake_write_len_point( &p, end, grp, pf, V ) ); - MBEDTLS_MPI_CHK( ecjpake_write_len_point( &p, end, grp, pf, X ) ); - - if( end - p < 4 ) - return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL ); - - *p++ = (unsigned char)( ( id_len >> 24 ) & 0xFF ); - *p++ = (unsigned char)( ( id_len >> 16 ) & 0xFF ); - *p++ = (unsigned char)( ( id_len >> 8 ) & 0xFF ); - *p++ = (unsigned char)( ( id_len ) & 0xFF ); - - if( end < p || (size_t)( end - p ) < id_len ) - return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL ); - - memcpy( p, id, id_len ); - p += id_len; - - /* Compute hash */ - MBEDTLS_MPI_CHK( mbedtls_md( md_info, buf, p - buf, hash ) ); - - /* Turn it into an integer mod n */ - MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( h, hash, - mbedtls_md_get_size( md_info ) ) ); - MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( h, h, &grp->N ) ); - -cleanup: - return( ret ); -} - -/* - * Parse a ECShnorrZKP (7.4.2.2.2) and verify it (7.4.2.3.3) - */ -static int ecjpake_zkp_read( const mbedtls_md_info_t *md_info, - const mbedtls_ecp_group *grp, - const int pf, - const mbedtls_ecp_point *G, - const mbedtls_ecp_point *X, - const char *id, - const unsigned char **p, - const unsigned char *end ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - mbedtls_ecp_point V, VV; - mbedtls_mpi r, h; - size_t r_len; - - mbedtls_ecp_point_init( &V ); - mbedtls_ecp_point_init( &VV ); - mbedtls_mpi_init( &r ); - mbedtls_mpi_init( &h ); - - /* - * struct { - * ECPoint V; - * opaque r<1..2^8-1>; - * } ECSchnorrZKP; - */ - if( end < *p ) - return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA ); - - MBEDTLS_MPI_CHK( mbedtls_ecp_tls_read_point( grp, &V, p, end - *p ) ); - - if( end < *p || (size_t)( end - *p ) < 1 ) - { - ret = MBEDTLS_ERR_ECP_BAD_INPUT_DATA; - goto cleanup; - } - - r_len = *(*p)++; - - if( end < *p || (size_t)( end - *p ) < r_len || r_len == 0 ) - { - ret = MBEDTLS_ERR_ECP_BAD_INPUT_DATA; - goto cleanup; - } - - MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( &r, *p, r_len ) ); - *p += r_len; - - /* - * Verification - */ - MBEDTLS_MPI_CHK( ecjpake_hash( md_info, grp, pf, G, &V, X, id, &h ) ); - MBEDTLS_MPI_CHK( mbedtls_ecp_muladd( (mbedtls_ecp_group *) grp, - &VV, &h, X, &r, G ) ); - - if( mbedtls_ecp_point_cmp( &VV, &V ) != 0 ) - { - ret = MBEDTLS_ERR_ECP_VERIFY_FAILED; - goto cleanup; - } - -cleanup: - mbedtls_ecp_point_free( &V ); - mbedtls_ecp_point_free( &VV ); - mbedtls_mpi_free( &r ); - mbedtls_mpi_free( &h ); - - return( ret ); -} - -/* - * Generate ZKP (7.4.2.3.2) and write it as ECSchnorrZKP (7.4.2.2.2) - */ -static int ecjpake_zkp_write( const mbedtls_md_info_t *md_info, - const mbedtls_ecp_group *grp, - const int pf, - const mbedtls_ecp_point *G, - const mbedtls_mpi *x, - const mbedtls_ecp_point *X, - const char *id, - unsigned char **p, - const unsigned char *end, - int (*f_rng)(void *, unsigned char *, size_t), - void *p_rng ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - mbedtls_ecp_point V; - mbedtls_mpi v; - mbedtls_mpi h; /* later recycled to hold r */ - size_t len; - - if( end < *p ) - return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL ); - - mbedtls_ecp_point_init( &V ); - mbedtls_mpi_init( &v ); - mbedtls_mpi_init( &h ); - - /* Compute signature */ - MBEDTLS_MPI_CHK( mbedtls_ecp_gen_keypair_base( (mbedtls_ecp_group *) grp, - G, &v, &V, f_rng, p_rng ) ); - MBEDTLS_MPI_CHK( ecjpake_hash( md_info, grp, pf, G, &V, X, id, &h ) ); - MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &h, &h, x ) ); /* x*h */ - MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mpi( &h, &v, &h ) ); /* v - x*h */ - MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &h, &h, &grp->N ) ); /* r */ - - /* Write it out */ - MBEDTLS_MPI_CHK( mbedtls_ecp_tls_write_point( grp, &V, - pf, &len, *p, end - *p ) ); - *p += len; - - len = mbedtls_mpi_size( &h ); /* actually r */ - if( end < *p || (size_t)( end - *p ) < 1 + len || len > 255 ) - { - ret = MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL; - goto cleanup; - } - - *(*p)++ = (unsigned char)( len & 0xFF ); - MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( &h, *p, len ) ); /* r */ - *p += len; - -cleanup: - mbedtls_ecp_point_free( &V ); - mbedtls_mpi_free( &v ); - mbedtls_mpi_free( &h ); - - return( ret ); -} - -/* - * Parse a ECJPAKEKeyKP (7.4.2.2.1) and check proof - * Output: verified public key X - */ -static int ecjpake_kkp_read( const mbedtls_md_info_t *md_info, - const mbedtls_ecp_group *grp, - const int pf, - const mbedtls_ecp_point *G, - mbedtls_ecp_point *X, - const char *id, - const unsigned char **p, - const unsigned char *end ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - - if( end < *p ) - return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA ); - - /* - * struct { - * ECPoint X; - * ECSchnorrZKP zkp; - * } ECJPAKEKeyKP; - */ - MBEDTLS_MPI_CHK( mbedtls_ecp_tls_read_point( grp, X, p, end - *p ) ); - if( mbedtls_ecp_is_zero( X ) ) - { - ret = MBEDTLS_ERR_ECP_INVALID_KEY; - goto cleanup; - } - - MBEDTLS_MPI_CHK( ecjpake_zkp_read( md_info, grp, pf, G, X, id, p, end ) ); - -cleanup: - return( ret ); -} - -/* - * Generate an ECJPAKEKeyKP - * Output: the serialized structure, plus private/public key pair - */ -static int ecjpake_kkp_write( const mbedtls_md_info_t *md_info, - const mbedtls_ecp_group *grp, - const int pf, - const mbedtls_ecp_point *G, - mbedtls_mpi *x, - mbedtls_ecp_point *X, - const char *id, - unsigned char **p, - const unsigned char *end, - int (*f_rng)(void *, unsigned char *, size_t), - void *p_rng ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - size_t len; - - if( end < *p ) - return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL ); - - /* Generate key (7.4.2.3.1) and write it out */ - MBEDTLS_MPI_CHK( mbedtls_ecp_gen_keypair_base( (mbedtls_ecp_group *) grp, G, x, X, - f_rng, p_rng ) ); - MBEDTLS_MPI_CHK( mbedtls_ecp_tls_write_point( grp, X, - pf, &len, *p, end - *p ) ); - *p += len; - - /* Generate and write proof */ - MBEDTLS_MPI_CHK( ecjpake_zkp_write( md_info, grp, pf, G, x, X, id, - p, end, f_rng, p_rng ) ); - -cleanup: - return( ret ); -} - -/* - * Read a ECJPAKEKeyKPPairList (7.4.2.3) and check proofs - * Ouputs: verified peer public keys Xa, Xb - */ -static int ecjpake_kkpp_read( const mbedtls_md_info_t *md_info, - const mbedtls_ecp_group *grp, - const int pf, - const mbedtls_ecp_point *G, - mbedtls_ecp_point *Xa, - mbedtls_ecp_point *Xb, - const char *id, - const unsigned char *buf, - size_t len ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - const unsigned char *p = buf; - const unsigned char *end = buf + len; - - /* - * struct { - * ECJPAKEKeyKP ecjpake_key_kp_pair_list[2]; - * } ECJPAKEKeyKPPairList; - */ - MBEDTLS_MPI_CHK( ecjpake_kkp_read( md_info, grp, pf, G, Xa, id, &p, end ) ); - MBEDTLS_MPI_CHK( ecjpake_kkp_read( md_info, grp, pf, G, Xb, id, &p, end ) ); - - if( p != end ) - ret = MBEDTLS_ERR_ECP_BAD_INPUT_DATA; - -cleanup: - return( ret ); -} - -/* - * Generate a ECJPAKEKeyKPPairList - * Outputs: the serialized structure, plus two private/public key pairs - */ -static int ecjpake_kkpp_write( const mbedtls_md_info_t *md_info, - const mbedtls_ecp_group *grp, - const int pf, - const mbedtls_ecp_point *G, - mbedtls_mpi *xm1, - mbedtls_ecp_point *Xa, - mbedtls_mpi *xm2, - mbedtls_ecp_point *Xb, - const char *id, - unsigned char *buf, - size_t len, - size_t *olen, - int (*f_rng)(void *, unsigned char *, size_t), - void *p_rng ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - unsigned char *p = buf; - const unsigned char *end = buf + len; - - MBEDTLS_MPI_CHK( ecjpake_kkp_write( md_info, grp, pf, G, xm1, Xa, id, - &p, end, f_rng, p_rng ) ); - MBEDTLS_MPI_CHK( ecjpake_kkp_write( md_info, grp, pf, G, xm2, Xb, id, - &p, end, f_rng, p_rng ) ); - - *olen = p - buf; - -cleanup: - return( ret ); -} - -/* - * Read and process the first round message - */ -int mbedtls_ecjpake_read_round_one( mbedtls_ecjpake_context *ctx, - const unsigned char *buf, - size_t len ) -{ - ECJPAKE_VALIDATE_RET( ctx != NULL ); - ECJPAKE_VALIDATE_RET( buf != NULL ); - - return( ecjpake_kkpp_read( ctx->md_info, &ctx->grp, ctx->point_format, - &ctx->grp.G, - &ctx->Xp1, &ctx->Xp2, ID_PEER, - buf, len ) ); -} - -/* - * Generate and write the first round message - */ -int mbedtls_ecjpake_write_round_one( mbedtls_ecjpake_context *ctx, - unsigned char *buf, size_t len, size_t *olen, - int (*f_rng)(void *, unsigned char *, size_t), - void *p_rng ) -{ - ECJPAKE_VALIDATE_RET( ctx != NULL ); - ECJPAKE_VALIDATE_RET( buf != NULL ); - ECJPAKE_VALIDATE_RET( olen != NULL ); - ECJPAKE_VALIDATE_RET( f_rng != NULL ); - - return( ecjpake_kkpp_write( ctx->md_info, &ctx->grp, ctx->point_format, - &ctx->grp.G, - &ctx->xm1, &ctx->Xm1, &ctx->xm2, &ctx->Xm2, - ID_MINE, buf, len, olen, f_rng, p_rng ) ); -} - -/* - * Compute the sum of three points R = A + B + C - */ -static int ecjpake_ecp_add3( mbedtls_ecp_group *grp, mbedtls_ecp_point *R, - const mbedtls_ecp_point *A, - const mbedtls_ecp_point *B, - const mbedtls_ecp_point *C ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - mbedtls_mpi one; - - mbedtls_mpi_init( &one ); - - MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &one, 1 ) ); - MBEDTLS_MPI_CHK( mbedtls_ecp_muladd( grp, R, &one, A, &one, B ) ); - MBEDTLS_MPI_CHK( mbedtls_ecp_muladd( grp, R, &one, R, &one, C ) ); - -cleanup: - mbedtls_mpi_free( &one ); - - return( ret ); -} - -/* - * Read and process second round message (C: 7.4.2.5, S: 7.4.2.6) - */ -int mbedtls_ecjpake_read_round_two( mbedtls_ecjpake_context *ctx, - const unsigned char *buf, - size_t len ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - const unsigned char *p = buf; - const unsigned char *end = buf + len; - mbedtls_ecp_group grp; - mbedtls_ecp_point G; /* C: GB, S: GA */ - - ECJPAKE_VALIDATE_RET( ctx != NULL ); - ECJPAKE_VALIDATE_RET( buf != NULL ); - - mbedtls_ecp_group_init( &grp ); - mbedtls_ecp_point_init( &G ); - - /* - * Server: GA = X3 + X4 + X1 (7.4.2.6.1) - * Client: GB = X1 + X2 + X3 (7.4.2.5.1) - * Unified: G = Xm1 + Xm2 + Xp1 - * We need that before parsing in order to check Xp as we read it - */ - MBEDTLS_MPI_CHK( ecjpake_ecp_add3( &ctx->grp, &G, - &ctx->Xm1, &ctx->Xm2, &ctx->Xp1 ) ); - - /* - * struct { - * ECParameters curve_params; // only client reading server msg - * ECJPAKEKeyKP ecjpake_key_kp; - * } Client/ServerECJPAKEParams; - */ - if( ctx->role == MBEDTLS_ECJPAKE_CLIENT ) - { - MBEDTLS_MPI_CHK( mbedtls_ecp_tls_read_group( &grp, &p, len ) ); - if( grp.id != ctx->grp.id ) - { - ret = MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE; - goto cleanup; - } - } - - MBEDTLS_MPI_CHK( ecjpake_kkp_read( ctx->md_info, &ctx->grp, - ctx->point_format, - &G, &ctx->Xp, ID_PEER, &p, end ) ); - - if( p != end ) - { - ret = MBEDTLS_ERR_ECP_BAD_INPUT_DATA; - goto cleanup; - } - -cleanup: - mbedtls_ecp_group_free( &grp ); - mbedtls_ecp_point_free( &G ); - - return( ret ); -} - -/* - * Compute R = +/- X * S mod N, taking care not to leak S - */ -static int ecjpake_mul_secret( mbedtls_mpi *R, int sign, - const mbedtls_mpi *X, - const mbedtls_mpi *S, - const mbedtls_mpi *N, - int (*f_rng)(void *, unsigned char *, size_t), - void *p_rng ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - mbedtls_mpi b; /* Blinding value, then s + N * blinding */ - - mbedtls_mpi_init( &b ); - - /* b = s + rnd-128-bit * N */ - MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( &b, 16, f_rng, p_rng ) ); - MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &b, &b, N ) ); - MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( &b, &b, S ) ); - - /* R = sign * X * b mod N */ - MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( R, X, &b ) ); - R->s *= sign; - MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( R, R, N ) ); - -cleanup: - mbedtls_mpi_free( &b ); - - return( ret ); -} - -/* - * Generate and write the second round message (S: 7.4.2.5, C: 7.4.2.6) - */ -int mbedtls_ecjpake_write_round_two( mbedtls_ecjpake_context *ctx, - unsigned char *buf, size_t len, size_t *olen, - int (*f_rng)(void *, unsigned char *, size_t), - void *p_rng ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - mbedtls_ecp_point G; /* C: GA, S: GB */ - mbedtls_ecp_point Xm; /* C: Xc, S: Xs */ - mbedtls_mpi xm; /* C: xc, S: xs */ - unsigned char *p = buf; - const unsigned char *end = buf + len; - size_t ec_len; - - ECJPAKE_VALIDATE_RET( ctx != NULL ); - ECJPAKE_VALIDATE_RET( buf != NULL ); - ECJPAKE_VALIDATE_RET( olen != NULL ); - ECJPAKE_VALIDATE_RET( f_rng != NULL ); - - mbedtls_ecp_point_init( &G ); - mbedtls_ecp_point_init( &Xm ); - mbedtls_mpi_init( &xm ); - - /* - * First generate private/public key pair (S: 7.4.2.5.1, C: 7.4.2.6.1) - * - * Client: GA = X1 + X3 + X4 | xs = x2 * s | Xc = xc * GA - * Server: GB = X3 + X1 + X2 | xs = x4 * s | Xs = xs * GB - * Unified: G = Xm1 + Xp1 + Xp2 | xm = xm2 * s | Xm = xm * G - */ - MBEDTLS_MPI_CHK( ecjpake_ecp_add3( &ctx->grp, &G, - &ctx->Xp1, &ctx->Xp2, &ctx->Xm1 ) ); - MBEDTLS_MPI_CHK( ecjpake_mul_secret( &xm, 1, &ctx->xm2, &ctx->s, - &ctx->grp.N, f_rng, p_rng ) ); - MBEDTLS_MPI_CHK( mbedtls_ecp_mul( &ctx->grp, &Xm, &xm, &G, f_rng, p_rng ) ); - - /* - * Now write things out - * - * struct { - * ECParameters curve_params; // only server writing its message - * ECJPAKEKeyKP ecjpake_key_kp; - * } Client/ServerECJPAKEParams; - */ - if( ctx->role == MBEDTLS_ECJPAKE_SERVER ) - { - if( end < p ) - { - ret = MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL; - goto cleanup; - } - MBEDTLS_MPI_CHK( mbedtls_ecp_tls_write_group( &ctx->grp, &ec_len, - p, end - p ) ); - p += ec_len; - } - - if( end < p ) - { - ret = MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL; - goto cleanup; - } - MBEDTLS_MPI_CHK( mbedtls_ecp_tls_write_point( &ctx->grp, &Xm, - ctx->point_format, &ec_len, p, end - p ) ); - p += ec_len; - - MBEDTLS_MPI_CHK( ecjpake_zkp_write( ctx->md_info, &ctx->grp, - ctx->point_format, - &G, &xm, &Xm, ID_MINE, - &p, end, f_rng, p_rng ) ); - - *olen = p - buf; - -cleanup: - mbedtls_ecp_point_free( &G ); - mbedtls_ecp_point_free( &Xm ); - mbedtls_mpi_free( &xm ); - - return( ret ); -} - -/* - * Derive PMS (7.4.2.7 / 7.4.2.8) - */ -int mbedtls_ecjpake_derive_secret( mbedtls_ecjpake_context *ctx, - unsigned char *buf, size_t len, size_t *olen, - int (*f_rng)(void *, unsigned char *, size_t), - void *p_rng ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - mbedtls_ecp_point K; - mbedtls_mpi m_xm2_s, one; - unsigned char kx[MBEDTLS_ECP_MAX_BYTES]; - size_t x_bytes; - - ECJPAKE_VALIDATE_RET( ctx != NULL ); - ECJPAKE_VALIDATE_RET( buf != NULL ); - ECJPAKE_VALIDATE_RET( olen != NULL ); - ECJPAKE_VALIDATE_RET( f_rng != NULL ); - - *olen = mbedtls_md_get_size( ctx->md_info ); - if( len < *olen ) - return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL ); - - mbedtls_ecp_point_init( &K ); - mbedtls_mpi_init( &m_xm2_s ); - mbedtls_mpi_init( &one ); - - MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &one, 1 ) ); - - /* - * Client: K = ( Xs - X4 * x2 * s ) * x2 - * Server: K = ( Xc - X2 * x4 * s ) * x4 - * Unified: K = ( Xp - Xp2 * xm2 * s ) * xm2 - */ - MBEDTLS_MPI_CHK( ecjpake_mul_secret( &m_xm2_s, -1, &ctx->xm2, &ctx->s, - &ctx->grp.N, f_rng, p_rng ) ); - MBEDTLS_MPI_CHK( mbedtls_ecp_muladd( &ctx->grp, &K, - &one, &ctx->Xp, - &m_xm2_s, &ctx->Xp2 ) ); - MBEDTLS_MPI_CHK( mbedtls_ecp_mul( &ctx->grp, &K, &ctx->xm2, &K, - f_rng, p_rng ) ); - - /* PMS = SHA-256( K.X ) */ - x_bytes = ( ctx->grp.pbits + 7 ) / 8; - MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( &K.X, kx, x_bytes ) ); - MBEDTLS_MPI_CHK( mbedtls_md( ctx->md_info, kx, x_bytes, buf ) ); - -cleanup: - mbedtls_ecp_point_free( &K ); - mbedtls_mpi_free( &m_xm2_s ); - mbedtls_mpi_free( &one ); - - return( ret ); -} - -#undef ID_MINE -#undef ID_PEER - -#endif /* ! MBEDTLS_ECJPAKE_ALT */ - -#if defined(MBEDTLS_SELF_TEST) - -#if defined(MBEDTLS_PLATFORM_C) -#include "mbedtls/platform.h" -#else -#include <stdio.h> -#define mbedtls_printf printf -#endif - -#if !defined(MBEDTLS_ECP_DP_SECP256R1_ENABLED) || \ - !defined(MBEDTLS_SHA256_C) -int mbedtls_ecjpake_self_test( int verbose ) -{ - (void) verbose; - return( 0 ); -} -#else - -static const unsigned char ecjpake_test_password[] = { - 0x74, 0x68, 0x72, 0x65, 0x61, 0x64, 0x6a, 0x70, 0x61, 0x6b, 0x65, 0x74, - 0x65, 0x73, 0x74 -}; - -#if !defined(MBEDTLS_ECJPAKE_ALT) - -static const unsigned char ecjpake_test_x1[] = { - 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, - 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, - 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x21 -}; - -static const unsigned char ecjpake_test_x2[] = { - 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, - 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, - 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x81 -}; - -static const unsigned char ecjpake_test_x3[] = { - 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, - 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, - 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x81 -}; - -static const unsigned char ecjpake_test_x4[] = { - 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, - 0xcd, 0xce, 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, - 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, 0xe1 -}; - -static const unsigned char ecjpake_test_cli_one[] = { - 0x41, 0x04, 0xac, 0xcf, 0x01, 0x06, 0xef, 0x85, 0x8f, 0xa2, 0xd9, 0x19, - 0x33, 0x13, 0x46, 0x80, 0x5a, 0x78, 0xb5, 0x8b, 0xba, 0xd0, 0xb8, 0x44, - 0xe5, 0xc7, 0x89, 0x28, 0x79, 0x14, 0x61, 0x87, 0xdd, 0x26, 0x66, 0xad, - 0xa7, 0x81, 0xbb, 0x7f, 0x11, 0x13, 0x72, 0x25, 0x1a, 0x89, 0x10, 0x62, - 0x1f, 0x63, 0x4d, 0xf1, 0x28, 0xac, 0x48, 0xe3, 0x81, 0xfd, 0x6e, 0xf9, - 0x06, 0x07, 0x31, 0xf6, 0x94, 0xa4, 0x41, 0x04, 0x1d, 0xd0, 0xbd, 0x5d, - 0x45, 0x66, 0xc9, 0xbe, 0xd9, 0xce, 0x7d, 0xe7, 0x01, 0xb5, 0xe8, 0x2e, - 0x08, 0xe8, 0x4b, 0x73, 0x04, 0x66, 0x01, 0x8a, 0xb9, 0x03, 0xc7, 0x9e, - 0xb9, 0x82, 0x17, 0x22, 0x36, 0xc0, 0xc1, 0x72, 0x8a, 0xe4, 0xbf, 0x73, - 0x61, 0x0d, 0x34, 0xde, 0x44, 0x24, 0x6e, 0xf3, 0xd9, 0xc0, 0x5a, 0x22, - 0x36, 0xfb, 0x66, 0xa6, 0x58, 0x3d, 0x74, 0x49, 0x30, 0x8b, 0xab, 0xce, - 0x20, 0x72, 0xfe, 0x16, 0x66, 0x29, 0x92, 0xe9, 0x23, 0x5c, 0x25, 0x00, - 0x2f, 0x11, 0xb1, 0x50, 0x87, 0xb8, 0x27, 0x38, 0xe0, 0x3c, 0x94, 0x5b, - 0xf7, 0xa2, 0x99, 0x5d, 0xda, 0x1e, 0x98, 0x34, 0x58, 0x41, 0x04, 0x7e, - 0xa6, 0xe3, 0xa4, 0x48, 0x70, 0x37, 0xa9, 0xe0, 0xdb, 0xd7, 0x92, 0x62, - 0xb2, 0xcc, 0x27, 0x3e, 0x77, 0x99, 0x30, 0xfc, 0x18, 0x40, 0x9a, 0xc5, - 0x36, 0x1c, 0x5f, 0xe6, 0x69, 0xd7, 0x02, 0xe1, 0x47, 0x79, 0x0a, 0xeb, - 0x4c, 0xe7, 0xfd, 0x65, 0x75, 0xab, 0x0f, 0x6c, 0x7f, 0xd1, 0xc3, 0x35, - 0x93, 0x9a, 0xa8, 0x63, 0xba, 0x37, 0xec, 0x91, 0xb7, 0xe3, 0x2b, 0xb0, - 0x13, 0xbb, 0x2b, 0x41, 0x04, 0xa4, 0x95, 0x58, 0xd3, 0x2e, 0xd1, 0xeb, - 0xfc, 0x18, 0x16, 0xaf, 0x4f, 0xf0, 0x9b, 0x55, 0xfc, 0xb4, 0xca, 0x47, - 0xb2, 0xa0, 0x2d, 0x1e, 0x7c, 0xaf, 0x11, 0x79, 0xea, 0x3f, 0xe1, 0x39, - 0x5b, 0x22, 0xb8, 0x61, 0x96, 0x40, 0x16, 0xfa, 0xba, 0xf7, 0x2c, 0x97, - 0x56, 0x95, 0xd9, 0x3d, 0x4d, 0xf0, 0xe5, 0x19, 0x7f, 0xe9, 0xf0, 0x40, - 0x63, 0x4e, 0xd5, 0x97, 0x64, 0x93, 0x77, 0x87, 0xbe, 0x20, 0xbc, 0x4d, - 0xee, 0xbb, 0xf9, 0xb8, 0xd6, 0x0a, 0x33, 0x5f, 0x04, 0x6c, 0xa3, 0xaa, - 0x94, 0x1e, 0x45, 0x86, 0x4c, 0x7c, 0xad, 0xef, 0x9c, 0xf7, 0x5b, 0x3d, - 0x8b, 0x01, 0x0e, 0x44, 0x3e, 0xf0 -}; - -static const unsigned char ecjpake_test_srv_one[] = { - 0x41, 0x04, 0x7e, 0xa6, 0xe3, 0xa4, 0x48, 0x70, 0x37, 0xa9, 0xe0, 0xdb, - 0xd7, 0x92, 0x62, 0xb2, 0xcc, 0x27, 0x3e, 0x77, 0x99, 0x30, 0xfc, 0x18, - 0x40, 0x9a, 0xc5, 0x36, 0x1c, 0x5f, 0xe6, 0x69, 0xd7, 0x02, 0xe1, 0x47, - 0x79, 0x0a, 0xeb, 0x4c, 0xe7, 0xfd, 0x65, 0x75, 0xab, 0x0f, 0x6c, 0x7f, - 0xd1, 0xc3, 0x35, 0x93, 0x9a, 0xa8, 0x63, 0xba, 0x37, 0xec, 0x91, 0xb7, - 0xe3, 0x2b, 0xb0, 0x13, 0xbb, 0x2b, 0x41, 0x04, 0x09, 0xf8, 0x5b, 0x3d, - 0x20, 0xeb, 0xd7, 0x88, 0x5c, 0xe4, 0x64, 0xc0, 0x8d, 0x05, 0x6d, 0x64, - 0x28, 0xfe, 0x4d, 0xd9, 0x28, 0x7a, 0xa3, 0x65, 0xf1, 0x31, 0xf4, 0x36, - 0x0f, 0xf3, 0x86, 0xd8, 0x46, 0x89, 0x8b, 0xc4, 0xb4, 0x15, 0x83, 0xc2, - 0xa5, 0x19, 0x7f, 0x65, 0xd7, 0x87, 0x42, 0x74, 0x6c, 0x12, 0xa5, 0xec, - 0x0a, 0x4f, 0xfe, 0x2f, 0x27, 0x0a, 0x75, 0x0a, 0x1d, 0x8f, 0xb5, 0x16, - 0x20, 0x93, 0x4d, 0x74, 0xeb, 0x43, 0xe5, 0x4d, 0xf4, 0x24, 0xfd, 0x96, - 0x30, 0x6c, 0x01, 0x17, 0xbf, 0x13, 0x1a, 0xfa, 0xbf, 0x90, 0xa9, 0xd3, - 0x3d, 0x11, 0x98, 0xd9, 0x05, 0x19, 0x37, 0x35, 0x14, 0x41, 0x04, 0x19, - 0x0a, 0x07, 0x70, 0x0f, 0xfa, 0x4b, 0xe6, 0xae, 0x1d, 0x79, 0xee, 0x0f, - 0x06, 0xae, 0xb5, 0x44, 0xcd, 0x5a, 0xdd, 0xaa, 0xbe, 0xdf, 0x70, 0xf8, - 0x62, 0x33, 0x21, 0x33, 0x2c, 0x54, 0xf3, 0x55, 0xf0, 0xfb, 0xfe, 0xc7, - 0x83, 0xed, 0x35, 0x9e, 0x5d, 0x0b, 0xf7, 0x37, 0x7a, 0x0f, 0xc4, 0xea, - 0x7a, 0xce, 0x47, 0x3c, 0x9c, 0x11, 0x2b, 0x41, 0xcc, 0xd4, 0x1a, 0xc5, - 0x6a, 0x56, 0x12, 0x41, 0x04, 0x36, 0x0a, 0x1c, 0xea, 0x33, 0xfc, 0xe6, - 0x41, 0x15, 0x64, 0x58, 0xe0, 0xa4, 0xea, 0xc2, 0x19, 0xe9, 0x68, 0x31, - 0xe6, 0xae, 0xbc, 0x88, 0xb3, 0xf3, 0x75, 0x2f, 0x93, 0xa0, 0x28, 0x1d, - 0x1b, 0xf1, 0xfb, 0x10, 0x60, 0x51, 0xdb, 0x96, 0x94, 0xa8, 0xd6, 0xe8, - 0x62, 0xa5, 0xef, 0x13, 0x24, 0xa3, 0xd9, 0xe2, 0x78, 0x94, 0xf1, 0xee, - 0x4f, 0x7c, 0x59, 0x19, 0x99, 0x65, 0xa8, 0xdd, 0x4a, 0x20, 0x91, 0x84, - 0x7d, 0x2d, 0x22, 0xdf, 0x3e, 0xe5, 0x5f, 0xaa, 0x2a, 0x3f, 0xb3, 0x3f, - 0xd2, 0xd1, 0xe0, 0x55, 0xa0, 0x7a, 0x7c, 0x61, 0xec, 0xfb, 0x8d, 0x80, - 0xec, 0x00, 0xc2, 0xc9, 0xeb, 0x12 -}; - -static const unsigned char ecjpake_test_srv_two[] = { - 0x03, 0x00, 0x17, 0x41, 0x04, 0x0f, 0xb2, 0x2b, 0x1d, 0x5d, 0x11, 0x23, - 0xe0, 0xef, 0x9f, 0xeb, 0x9d, 0x8a, 0x2e, 0x59, 0x0a, 0x1f, 0x4d, 0x7c, - 0xed, 0x2c, 0x2b, 0x06, 0x58, 0x6e, 0x8f, 0x2a, 0x16, 0xd4, 0xeb, 0x2f, - 0xda, 0x43, 0x28, 0xa2, 0x0b, 0x07, 0xd8, 0xfd, 0x66, 0x76, 0x54, 0xca, - 0x18, 0xc5, 0x4e, 0x32, 0xa3, 0x33, 0xa0, 0x84, 0x54, 0x51, 0xe9, 0x26, - 0xee, 0x88, 0x04, 0xfd, 0x7a, 0xf0, 0xaa, 0xa7, 0xa6, 0x41, 0x04, 0x55, - 0x16, 0xea, 0x3e, 0x54, 0xa0, 0xd5, 0xd8, 0xb2, 0xce, 0x78, 0x6b, 0x38, - 0xd3, 0x83, 0x37, 0x00, 0x29, 0xa5, 0xdb, 0xe4, 0x45, 0x9c, 0x9d, 0xd6, - 0x01, 0xb4, 0x08, 0xa2, 0x4a, 0xe6, 0x46, 0x5c, 0x8a, 0xc9, 0x05, 0xb9, - 0xeb, 0x03, 0xb5, 0xd3, 0x69, 0x1c, 0x13, 0x9e, 0xf8, 0x3f, 0x1c, 0xd4, - 0x20, 0x0f, 0x6c, 0x9c, 0xd4, 0xec, 0x39, 0x22, 0x18, 0xa5, 0x9e, 0xd2, - 0x43, 0xd3, 0xc8, 0x20, 0xff, 0x72, 0x4a, 0x9a, 0x70, 0xb8, 0x8c, 0xb8, - 0x6f, 0x20, 0xb4, 0x34, 0xc6, 0x86, 0x5a, 0xa1, 0xcd, 0x79, 0x06, 0xdd, - 0x7c, 0x9b, 0xce, 0x35, 0x25, 0xf5, 0x08, 0x27, 0x6f, 0x26, 0x83, 0x6c -}; - -static const unsigned char ecjpake_test_cli_two[] = { - 0x41, 0x04, 0x69, 0xd5, 0x4e, 0xe8, 0x5e, 0x90, 0xce, 0x3f, 0x12, 0x46, - 0x74, 0x2d, 0xe5, 0x07, 0xe9, 0x39, 0xe8, 0x1d, 0x1d, 0xc1, 0xc5, 0xcb, - 0x98, 0x8b, 0x58, 0xc3, 0x10, 0xc9, 0xfd, 0xd9, 0x52, 0x4d, 0x93, 0x72, - 0x0b, 0x45, 0x54, 0x1c, 0x83, 0xee, 0x88, 0x41, 0x19, 0x1d, 0xa7, 0xce, - 0xd8, 0x6e, 0x33, 0x12, 0xd4, 0x36, 0x23, 0xc1, 0xd6, 0x3e, 0x74, 0x98, - 0x9a, 0xba, 0x4a, 0xff, 0xd1, 0xee, 0x41, 0x04, 0x07, 0x7e, 0x8c, 0x31, - 0xe2, 0x0e, 0x6b, 0xed, 0xb7, 0x60, 0xc1, 0x35, 0x93, 0xe6, 0x9f, 0x15, - 0xbe, 0x85, 0xc2, 0x7d, 0x68, 0xcd, 0x09, 0xcc, 0xb8, 0xc4, 0x18, 0x36, - 0x08, 0x91, 0x7c, 0x5c, 0x3d, 0x40, 0x9f, 0xac, 0x39, 0xfe, 0xfe, 0xe8, - 0x2f, 0x72, 0x92, 0xd3, 0x6f, 0x0d, 0x23, 0xe0, 0x55, 0x91, 0x3f, 0x45, - 0xa5, 0x2b, 0x85, 0xdd, 0x8a, 0x20, 0x52, 0xe9, 0xe1, 0x29, 0xbb, 0x4d, - 0x20, 0x0f, 0x01, 0x1f, 0x19, 0x48, 0x35, 0x35, 0xa6, 0xe8, 0x9a, 0x58, - 0x0c, 0x9b, 0x00, 0x03, 0xba, 0xf2, 0x14, 0x62, 0xec, 0xe9, 0x1a, 0x82, - 0xcc, 0x38, 0xdb, 0xdc, 0xae, 0x60, 0xd9, 0xc5, 0x4c -}; - -static const unsigned char ecjpake_test_pms[] = { - 0xf3, 0xd4, 0x7f, 0x59, 0x98, 0x44, 0xdb, 0x92, 0xa5, 0x69, 0xbb, 0xe7, - 0x98, 0x1e, 0x39, 0xd9, 0x31, 0xfd, 0x74, 0x3b, 0xf2, 0x2e, 0x98, 0xf9, - 0xb4, 0x38, 0xf7, 0x19, 0xd3, 0xc4, 0xf3, 0x51 -}; - -/* Load my private keys and generate the corresponding public keys */ -static int ecjpake_test_load( mbedtls_ecjpake_context *ctx, - const unsigned char *xm1, size_t len1, - const unsigned char *xm2, size_t len2 ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - - MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( &ctx->xm1, xm1, len1 ) ); - MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( &ctx->xm2, xm2, len2 ) ); - MBEDTLS_MPI_CHK( mbedtls_ecp_mul( &ctx->grp, &ctx->Xm1, &ctx->xm1, - &ctx->grp.G, NULL, NULL ) ); - MBEDTLS_MPI_CHK( mbedtls_ecp_mul( &ctx->grp, &ctx->Xm2, &ctx->xm2, - &ctx->grp.G, NULL, NULL ) ); - -cleanup: - return( ret ); -} - -#endif /* ! MBEDTLS_ECJPAKE_ALT */ - -/* For tests we don't need a secure RNG; - * use the LGC from Numerical Recipes for simplicity */ -static int ecjpake_lgc( void *p, unsigned char *out, size_t len ) -{ - static uint32_t x = 42; - (void) p; - - while( len > 0 ) - { - size_t use_len = len > 4 ? 4 : len; - x = 1664525 * x + 1013904223; - memcpy( out, &x, use_len ); - out += use_len; - len -= use_len; - } - - return( 0 ); -} - -#define TEST_ASSERT( x ) \ - do { \ - if( x ) \ - ret = 0; \ - else \ - { \ - ret = 1; \ - goto cleanup; \ - } \ - } while( 0 ) - -/* - * Checkup routine - */ -int mbedtls_ecjpake_self_test( int verbose ) -{ - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - mbedtls_ecjpake_context cli; - mbedtls_ecjpake_context srv; - unsigned char buf[512], pms[32]; - size_t len, pmslen; - - mbedtls_ecjpake_init( &cli ); - mbedtls_ecjpake_init( &srv ); - - if( verbose != 0 ) - mbedtls_printf( " ECJPAKE test #0 (setup): " ); - - TEST_ASSERT( mbedtls_ecjpake_setup( &cli, MBEDTLS_ECJPAKE_CLIENT, - MBEDTLS_MD_SHA256, MBEDTLS_ECP_DP_SECP256R1, - ecjpake_test_password, - sizeof( ecjpake_test_password ) ) == 0 ); - - TEST_ASSERT( mbedtls_ecjpake_setup( &srv, MBEDTLS_ECJPAKE_SERVER, - MBEDTLS_MD_SHA256, MBEDTLS_ECP_DP_SECP256R1, - ecjpake_test_password, - sizeof( ecjpake_test_password ) ) == 0 ); - - if( verbose != 0 ) - mbedtls_printf( "passed\n" ); - - if( verbose != 0 ) - mbedtls_printf( " ECJPAKE test #1 (random handshake): " ); - - TEST_ASSERT( mbedtls_ecjpake_write_round_one( &cli, - buf, sizeof( buf ), &len, ecjpake_lgc, NULL ) == 0 ); - - TEST_ASSERT( mbedtls_ecjpake_read_round_one( &srv, buf, len ) == 0 ); - - TEST_ASSERT( mbedtls_ecjpake_write_round_one( &srv, - buf, sizeof( buf ), &len, ecjpake_lgc, NULL ) == 0 ); - - TEST_ASSERT( mbedtls_ecjpake_read_round_one( &cli, buf, len ) == 0 ); - - TEST_ASSERT( mbedtls_ecjpake_write_round_two( &srv, - buf, sizeof( buf ), &len, ecjpake_lgc, NULL ) == 0 ); - - TEST_ASSERT( mbedtls_ecjpake_read_round_two( &cli, buf, len ) == 0 ); - - TEST_ASSERT( mbedtls_ecjpake_derive_secret( &cli, - pms, sizeof( pms ), &pmslen, ecjpake_lgc, NULL ) == 0 ); - - TEST_ASSERT( mbedtls_ecjpake_write_round_two( &cli, - buf, sizeof( buf ), &len, ecjpake_lgc, NULL ) == 0 ); - - TEST_ASSERT( mbedtls_ecjpake_read_round_two( &srv, buf, len ) == 0 ); - - TEST_ASSERT( mbedtls_ecjpake_derive_secret( &srv, - buf, sizeof( buf ), &len, ecjpake_lgc, NULL ) == 0 ); - - TEST_ASSERT( len == pmslen ); - TEST_ASSERT( memcmp( buf, pms, len ) == 0 ); - - if( verbose != 0 ) - mbedtls_printf( "passed\n" ); - -#if !defined(MBEDTLS_ECJPAKE_ALT) - /* 'reference handshake' tests can only be run against implementations - * for which we have 100% control over how the random ephemeral keys - * are generated. This is only the case for the internal mbed TLS - * implementation, so these tests are skipped in case the internal - * implementation is swapped out for an alternative one. */ - if( verbose != 0 ) - mbedtls_printf( " ECJPAKE test #2 (reference handshake): " ); - - /* Simulate generation of round one */ - MBEDTLS_MPI_CHK( ecjpake_test_load( &cli, - ecjpake_test_x1, sizeof( ecjpake_test_x1 ), - ecjpake_test_x2, sizeof( ecjpake_test_x2 ) ) ); - - MBEDTLS_MPI_CHK( ecjpake_test_load( &srv, - ecjpake_test_x3, sizeof( ecjpake_test_x3 ), - ecjpake_test_x4, sizeof( ecjpake_test_x4 ) ) ); - - /* Read round one */ - TEST_ASSERT( mbedtls_ecjpake_read_round_one( &srv, - ecjpake_test_cli_one, - sizeof( ecjpake_test_cli_one ) ) == 0 ); - - TEST_ASSERT( mbedtls_ecjpake_read_round_one( &cli, - ecjpake_test_srv_one, - sizeof( ecjpake_test_srv_one ) ) == 0 ); - - /* Skip generation of round two, read round two */ - TEST_ASSERT( mbedtls_ecjpake_read_round_two( &cli, - ecjpake_test_srv_two, - sizeof( ecjpake_test_srv_two ) ) == 0 ); - - TEST_ASSERT( mbedtls_ecjpake_read_round_two( &srv, - ecjpake_test_cli_two, - sizeof( ecjpake_test_cli_two ) ) == 0 ); - - /* Server derives PMS */ - TEST_ASSERT( mbedtls_ecjpake_derive_secret( &srv, - buf, sizeof( buf ), &len, ecjpake_lgc, NULL ) == 0 ); - - TEST_ASSERT( len == sizeof( ecjpake_test_pms ) ); - TEST_ASSERT( memcmp( buf, ecjpake_test_pms, len ) == 0 ); - - memset( buf, 0, len ); /* Avoid interferences with next step */ - - /* Client derives PMS */ - TEST_ASSERT( mbedtls_ecjpake_derive_secret( &cli, - buf, sizeof( buf ), &len, ecjpake_lgc, NULL ) == 0 ); - - TEST_ASSERT( len == sizeof( ecjpake_test_pms ) ); - TEST_ASSERT( memcmp( buf, ecjpake_test_pms, len ) == 0 ); - - if( verbose != 0 ) - mbedtls_printf( "passed\n" ); -#endif /* ! MBEDTLS_ECJPAKE_ALT */ - -cleanup: - mbedtls_ecjpake_free( &cli ); - mbedtls_ecjpake_free( &srv ); - - if( ret != 0 ) - { - if( verbose != 0 ) - mbedtls_printf( "failed\n" ); - - ret = 1; - } - - if( verbose != 0 ) - mbedtls_printf( "\n" ); - - return( ret ); -} - -#undef TEST_ASSERT - -#endif /* MBEDTLS_ECP_DP_SECP256R1_ENABLED && MBEDTLS_SHA256_C */ - -#endif /* MBEDTLS_SELF_TEST */ - -#endif /* MBEDTLS_ECJPAKE_C */ |