Removed old mbedtls, replacing with submodule.

1 files changed, 0 insertions, 729 deletions

diff --git a/lib/mbedtls-2.27.0/library/ecdh.c b/lib/mbedtls-2.27.0/library/ecdh.c
deleted file mode 100644
index 9dfa868..0000000
--- a/lib/mbedtls-2.27.0/library/ecdh.c
+++ /dev/null
@@ -1,729 +0,0 @@
-/*
- *  Elliptic curve Diffie-Hellman
- *
- *  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:
- *
- * SEC1 http://www.secg.org/index.php?action=secg,docs_secg
- * RFC 4492
- */
-
-#include "common.h"
-
-#if defined(MBEDTLS_ECDH_C)
-
-#include "mbedtls/ecdh.h"
-#include "mbedtls/platform_util.h"
-#include "mbedtls/error.h"
-
-#include <string.h>
-
-/* Parameter validation macros based on platform_util.h */
-#define ECDH_VALIDATE_RET( cond )    \
-    MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_ECP_BAD_INPUT_DATA )
-#define ECDH_VALIDATE( cond )        \
-    MBEDTLS_INTERNAL_VALIDATE( cond )
-
-#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT)
-typedef mbedtls_ecdh_context mbedtls_ecdh_context_mbed;
-#endif
-
-static mbedtls_ecp_group_id mbedtls_ecdh_grp_id(
-    const mbedtls_ecdh_context *ctx )
-{
-#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT)
-    return( ctx->grp.id );
-#else
-    return( ctx->grp_id );
-#endif
-}
-
-int mbedtls_ecdh_can_do( mbedtls_ecp_group_id gid )
-{
-    /* At this time, all groups support ECDH. */
-    (void) gid;
-    return( 1 );
-}
-
-#if !defined(MBEDTLS_ECDH_GEN_PUBLIC_ALT)
-/*
- * Generate public key (restartable version)
- *
- * Note: this internal function relies on its caller preserving the value of
- * the output parameter 'd' across continuation calls. This would not be
- * acceptable for a public function but is OK here as we control call sites.
- */
-static int ecdh_gen_public_restartable( mbedtls_ecp_group *grp,
-                    mbedtls_mpi *d, mbedtls_ecp_point *Q,
-                    int (*f_rng)(void *, unsigned char *, size_t),
-                    void *p_rng,
-                    mbedtls_ecp_restart_ctx *rs_ctx )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-
-    /* If multiplication is in progress, we already generated a privkey */
-#if defined(MBEDTLS_ECP_RESTARTABLE)
-    if( rs_ctx == NULL || rs_ctx->rsm == NULL )
-#endif
-        MBEDTLS_MPI_CHK( mbedtls_ecp_gen_privkey( grp, d, f_rng, p_rng ) );
-
-    MBEDTLS_MPI_CHK( mbedtls_ecp_mul_restartable( grp, Q, d, &grp->G,
-                                                  f_rng, p_rng, rs_ctx ) );
-
-cleanup:
-    return( ret );
-}
-
-/*
- * Generate public key
- */
-int mbedtls_ecdh_gen_public( mbedtls_ecp_group *grp, mbedtls_mpi *d, mbedtls_ecp_point *Q,
-                     int (*f_rng)(void *, unsigned char *, size_t),
-                     void *p_rng )
-{
-    ECDH_VALIDATE_RET( grp != NULL );
-    ECDH_VALIDATE_RET( d != NULL );
-    ECDH_VALIDATE_RET( Q != NULL );
-    ECDH_VALIDATE_RET( f_rng != NULL );
-    return( ecdh_gen_public_restartable( grp, d, Q, f_rng, p_rng, NULL ) );
-}
-#endif /* !MBEDTLS_ECDH_GEN_PUBLIC_ALT */
-
-#if !defined(MBEDTLS_ECDH_COMPUTE_SHARED_ALT)
-/*
- * Compute shared secret (SEC1 3.3.1)
- */
-static int ecdh_compute_shared_restartable( mbedtls_ecp_group *grp,
-                         mbedtls_mpi *z,
-                         const mbedtls_ecp_point *Q, const mbedtls_mpi *d,
-                         int (*f_rng)(void *, unsigned char *, size_t),
-                         void *p_rng,
-                         mbedtls_ecp_restart_ctx *rs_ctx )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    mbedtls_ecp_point P;
-
-    mbedtls_ecp_point_init( &P );
-
-    MBEDTLS_MPI_CHK( mbedtls_ecp_mul_restartable( grp, &P, d, Q,
-                                                  f_rng, p_rng, rs_ctx ) );
-
-    if( mbedtls_ecp_is_zero( &P ) )
-    {
-        ret = MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
-        goto cleanup;
-    }
-
-    MBEDTLS_MPI_CHK( mbedtls_mpi_copy( z, &P.X ) );
-
-cleanup:
-    mbedtls_ecp_point_free( &P );
-
-    return( ret );
-}
-
-/*
- * Compute shared secret (SEC1 3.3.1)
- */
-int mbedtls_ecdh_compute_shared( mbedtls_ecp_group *grp, mbedtls_mpi *z,
-                         const mbedtls_ecp_point *Q, const mbedtls_mpi *d,
-                         int (*f_rng)(void *, unsigned char *, size_t),
-                         void *p_rng )
-{
-    ECDH_VALIDATE_RET( grp != NULL );
-    ECDH_VALIDATE_RET( Q != NULL );
-    ECDH_VALIDATE_RET( d != NULL );
-    ECDH_VALIDATE_RET( z != NULL );
-    return( ecdh_compute_shared_restartable( grp, z, Q, d,
-                                             f_rng, p_rng, NULL ) );
-}
-#endif /* !MBEDTLS_ECDH_COMPUTE_SHARED_ALT */
-
-static void ecdh_init_internal( mbedtls_ecdh_context_mbed *ctx )
-{
-    mbedtls_ecp_group_init( &ctx->grp );
-    mbedtls_mpi_init( &ctx->d  );
-    mbedtls_ecp_point_init( &ctx->Q   );
-    mbedtls_ecp_point_init( &ctx->Qp  );
-    mbedtls_mpi_init( &ctx->z  );
-
-#if defined(MBEDTLS_ECP_RESTARTABLE)
-    mbedtls_ecp_restart_init( &ctx->rs );
-#endif
-}
-
-/*
- * Initialize context
- */
-void mbedtls_ecdh_init( mbedtls_ecdh_context *ctx )
-{
-    ECDH_VALIDATE( ctx != NULL );
-
-#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT)
-    ecdh_init_internal( ctx );
-    mbedtls_ecp_point_init( &ctx->Vi  );
-    mbedtls_ecp_point_init( &ctx->Vf  );
-    mbedtls_mpi_init( &ctx->_d );
-#else
-    memset( ctx, 0, sizeof( mbedtls_ecdh_context ) );
-
-    ctx->var = MBEDTLS_ECDH_VARIANT_NONE;
-#endif
-    ctx->point_format = MBEDTLS_ECP_PF_UNCOMPRESSED;
-#if defined(MBEDTLS_ECP_RESTARTABLE)
-    ctx->restart_enabled = 0;
-#endif
-}
-
-static int ecdh_setup_internal( mbedtls_ecdh_context_mbed *ctx,
-                                mbedtls_ecp_group_id grp_id )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-
-    ret = mbedtls_ecp_group_load( &ctx->grp, grp_id );
-    if( ret != 0 )
-    {
-        return( MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE );
-    }
-
-    return( 0 );
-}
-
-/*
- * Setup context
- */
-int mbedtls_ecdh_setup( mbedtls_ecdh_context *ctx, mbedtls_ecp_group_id grp_id )
-{
-    ECDH_VALIDATE_RET( ctx != NULL );
-
-#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT)
-    return( ecdh_setup_internal( ctx, grp_id ) );
-#else
-    switch( grp_id )
-    {
-#if defined(MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED)
-        case MBEDTLS_ECP_DP_CURVE25519:
-            ctx->point_format = MBEDTLS_ECP_PF_COMPRESSED;
-            ctx->var = MBEDTLS_ECDH_VARIANT_EVEREST;
-            ctx->grp_id = grp_id;
-            return( mbedtls_everest_setup( &ctx->ctx.everest_ecdh, grp_id ) );
-#endif
-        default:
-            ctx->point_format = MBEDTLS_ECP_PF_UNCOMPRESSED;
-            ctx->var = MBEDTLS_ECDH_VARIANT_MBEDTLS_2_0;
-            ctx->grp_id = grp_id;
-            ecdh_init_internal( &ctx->ctx.mbed_ecdh );
-            return( ecdh_setup_internal( &ctx->ctx.mbed_ecdh, grp_id ) );
-    }
-#endif
-}
-
-static void ecdh_free_internal( mbedtls_ecdh_context_mbed *ctx )
-{
-    mbedtls_ecp_group_free( &ctx->grp );
-    mbedtls_mpi_free( &ctx->d  );
-    mbedtls_ecp_point_free( &ctx->Q   );
-    mbedtls_ecp_point_free( &ctx->Qp  );
-    mbedtls_mpi_free( &ctx->z  );
-
-#if defined(MBEDTLS_ECP_RESTARTABLE)
-    mbedtls_ecp_restart_free( &ctx->rs );
-#endif
-}
-
-#if defined(MBEDTLS_ECP_RESTARTABLE)
-/*
- * Enable restartable operations for context
- */
-void mbedtls_ecdh_enable_restart( mbedtls_ecdh_context *ctx )
-{
-    ECDH_VALIDATE( ctx != NULL );
-
-    ctx->restart_enabled = 1;
-}
-#endif
-
-/*
- * Free context
- */
-void mbedtls_ecdh_free( mbedtls_ecdh_context *ctx )
-{
-    if( ctx == NULL )
-        return;
-
-#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT)
-    mbedtls_ecp_point_free( &ctx->Vi );
-    mbedtls_ecp_point_free( &ctx->Vf );
-    mbedtls_mpi_free( &ctx->_d );
-    ecdh_free_internal( ctx );
-#else
-    switch( ctx->var )
-    {
-#if defined(MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED)
-        case MBEDTLS_ECDH_VARIANT_EVEREST:
-            mbedtls_everest_free( &ctx->ctx.everest_ecdh );
-            break;
-#endif
-        case MBEDTLS_ECDH_VARIANT_MBEDTLS_2_0:
-            ecdh_free_internal( &ctx->ctx.mbed_ecdh );
-            break;
-        default:
-            break;
-    }
-
-    ctx->point_format = MBEDTLS_ECP_PF_UNCOMPRESSED;
-    ctx->var = MBEDTLS_ECDH_VARIANT_NONE;
-    ctx->grp_id = MBEDTLS_ECP_DP_NONE;
-#endif
-}
-
-static int ecdh_make_params_internal( mbedtls_ecdh_context_mbed *ctx,
-                                      size_t *olen, int point_format,
-                                      unsigned char *buf, size_t blen,
-                                      int (*f_rng)(void *,
-                                                   unsigned char *,
-                                                   size_t),
-                                      void *p_rng,
-                                      int restart_enabled )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    size_t grp_len, pt_len;
-#if defined(MBEDTLS_ECP_RESTARTABLE)
-    mbedtls_ecp_restart_ctx *rs_ctx = NULL;
-#endif
-
-    if( ctx->grp.pbits == 0 )
-        return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
-
-#if defined(MBEDTLS_ECP_RESTARTABLE)
-    if( restart_enabled )
-        rs_ctx = &ctx->rs;
-#else
-    (void) restart_enabled;
-#endif
-
-
-#if defined(MBEDTLS_ECP_RESTARTABLE)
-    if( ( ret = ecdh_gen_public_restartable( &ctx->grp, &ctx->d, &ctx->Q,
-                                             f_rng, p_rng, rs_ctx ) ) != 0 )
-        return( ret );
-#else
-    if( ( ret = mbedtls_ecdh_gen_public( &ctx->grp, &ctx->d, &ctx->Q,
-                                         f_rng, p_rng ) ) != 0 )
-        return( ret );
-#endif /* MBEDTLS_ECP_RESTARTABLE */
-
-    if( ( ret = mbedtls_ecp_tls_write_group( &ctx->grp, &grp_len, buf,
-                                             blen ) ) != 0 )
-        return( ret );
-
-    buf += grp_len;
-    blen -= grp_len;
-
-    if( ( ret = mbedtls_ecp_tls_write_point( &ctx->grp, &ctx->Q, point_format,
-                                             &pt_len, buf, blen ) ) != 0 )
-        return( ret );
-
-    *olen = grp_len + pt_len;
-    return( 0 );
-}
-
-/*
- * Setup and write the ServerKeyExchange parameters (RFC 4492)
- *      struct {
- *          ECParameters    curve_params;
- *          ECPoint         public;
- *      } ServerECDHParams;
- */
-int mbedtls_ecdh_make_params( mbedtls_ecdh_context *ctx, size_t *olen,
-                              unsigned char *buf, size_t blen,
-                              int (*f_rng)(void *, unsigned char *, size_t),
-                              void *p_rng )
-{
-    int restart_enabled = 0;
-    ECDH_VALIDATE_RET( ctx != NULL );
-    ECDH_VALIDATE_RET( olen != NULL );
-    ECDH_VALIDATE_RET( buf != NULL );
-    ECDH_VALIDATE_RET( f_rng != NULL );
-
-#if defined(MBEDTLS_ECP_RESTARTABLE)
-    restart_enabled = ctx->restart_enabled;
-#else
-    (void) restart_enabled;
-#endif
-
-#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT)
-    return( ecdh_make_params_internal( ctx, olen, ctx->point_format, buf, blen,
-                                       f_rng, p_rng, restart_enabled ) );
-#else
-    switch( ctx->var )
-    {
-#if defined(MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED)
-        case MBEDTLS_ECDH_VARIANT_EVEREST:
-            return( mbedtls_everest_make_params( &ctx->ctx.everest_ecdh, olen,
-                                                 buf, blen, f_rng, p_rng ) );
-#endif
-        case MBEDTLS_ECDH_VARIANT_MBEDTLS_2_0:
-            return( ecdh_make_params_internal( &ctx->ctx.mbed_ecdh, olen,
-                                               ctx->point_format, buf, blen,
-                                               f_rng, p_rng,
-                                               restart_enabled ) );
-        default:
-            return MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
-    }
-#endif
-}
-
-static int ecdh_read_params_internal( mbedtls_ecdh_context_mbed *ctx,
-                                      const unsigned char **buf,
-                                      const unsigned char *end )
-{
-    return( mbedtls_ecp_tls_read_point( &ctx->grp, &ctx->Qp, buf,
-                                        end - *buf ) );
-}
-
-/*
- * Read the ServerKeyExhange parameters (RFC 4492)
- *      struct {
- *          ECParameters    curve_params;
- *          ECPoint         public;
- *      } ServerECDHParams;
- */
-int mbedtls_ecdh_read_params( mbedtls_ecdh_context *ctx,
-                              const unsigned char **buf,
-                              const unsigned char *end )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    mbedtls_ecp_group_id grp_id;
-    ECDH_VALIDATE_RET( ctx != NULL );
-    ECDH_VALIDATE_RET( buf != NULL );
-    ECDH_VALIDATE_RET( *buf != NULL );
-    ECDH_VALIDATE_RET( end != NULL );
-
-    if( ( ret = mbedtls_ecp_tls_read_group_id( &grp_id, buf, end - *buf ) )
-            != 0 )
-        return( ret );
-
-    if( ( ret = mbedtls_ecdh_setup( ctx, grp_id ) ) != 0 )
-        return( ret );
-
-#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT)
-    return( ecdh_read_params_internal( ctx, buf, end ) );
-#else
-    switch( ctx->var )
-    {
-#if defined(MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED)
-        case MBEDTLS_ECDH_VARIANT_EVEREST:
-            return( mbedtls_everest_read_params( &ctx->ctx.everest_ecdh,
-                                                 buf, end) );
-#endif
-        case MBEDTLS_ECDH_VARIANT_MBEDTLS_2_0:
-            return( ecdh_read_params_internal( &ctx->ctx.mbed_ecdh,
-                                               buf, end ) );
-        default:
-            return MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
-    }
-#endif
-}
-
-static int ecdh_get_params_internal( mbedtls_ecdh_context_mbed *ctx,
-                                     const mbedtls_ecp_keypair *key,
-                                     mbedtls_ecdh_side side )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-
-    /* If it's not our key, just import the public part as Qp */
-    if( side == MBEDTLS_ECDH_THEIRS )
-        return( mbedtls_ecp_copy( &ctx->Qp, &key->Q ) );
-
-    /* Our key: import public (as Q) and private parts */
-    if( side != MBEDTLS_ECDH_OURS )
-        return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
-
-    if( ( ret = mbedtls_ecp_copy( &ctx->Q, &key->Q ) ) != 0 ||
-        ( ret = mbedtls_mpi_copy( &ctx->d, &key->d ) ) != 0 )
-        return( ret );
-
-    return( 0 );
-}
-
-/*
- * Get parameters from a keypair
- */
-int mbedtls_ecdh_get_params( mbedtls_ecdh_context *ctx,
-                             const mbedtls_ecp_keypair *key,
-                             mbedtls_ecdh_side side )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    ECDH_VALIDATE_RET( ctx != NULL );
-    ECDH_VALIDATE_RET( key != NULL );
-    ECDH_VALIDATE_RET( side == MBEDTLS_ECDH_OURS ||
-                       side == MBEDTLS_ECDH_THEIRS );
-
-    if( mbedtls_ecdh_grp_id( ctx ) == MBEDTLS_ECP_DP_NONE )
-    {
-        /* This is the first call to get_params(). Set up the context
-         * for use with the group. */
-        if( ( ret = mbedtls_ecdh_setup( ctx, key->grp.id ) ) != 0 )
-            return( ret );
-    }
-    else
-    {
-        /* This is not the first call to get_params(). Check that the
-         * current key's group is the same as the context's, which was set
-         * from the first key's group. */
-        if( mbedtls_ecdh_grp_id( ctx ) != key->grp.id )
-            return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
-    }
-
-#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT)
-    return( ecdh_get_params_internal( ctx, key, side ) );
-#else
-    switch( ctx->var )
-    {
-#if defined(MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED)
-        case MBEDTLS_ECDH_VARIANT_EVEREST:
-        {
-            mbedtls_everest_ecdh_side s = side == MBEDTLS_ECDH_OURS ?
-                                                   MBEDTLS_EVEREST_ECDH_OURS :
-                                                   MBEDTLS_EVEREST_ECDH_THEIRS;
-            return( mbedtls_everest_get_params( &ctx->ctx.everest_ecdh,
-                                                key, s) );
-        }
-#endif
-        case MBEDTLS_ECDH_VARIANT_MBEDTLS_2_0:
-            return( ecdh_get_params_internal( &ctx->ctx.mbed_ecdh,
-                                              key, side ) );
-        default:
-            return MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
-    }
-#endif
-}
-
-static int ecdh_make_public_internal( mbedtls_ecdh_context_mbed *ctx,
-                                      size_t *olen, int point_format,
-                                      unsigned char *buf, size_t blen,
-                                      int (*f_rng)(void *,
-                                                   unsigned char *,
-                                                   size_t),
-                                      void *p_rng,
-                                      int restart_enabled )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-#if defined(MBEDTLS_ECP_RESTARTABLE)
-    mbedtls_ecp_restart_ctx *rs_ctx = NULL;
-#endif
-
-    if( ctx->grp.pbits == 0 )
-        return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
-
-#if defined(MBEDTLS_ECP_RESTARTABLE)
-    if( restart_enabled )
-        rs_ctx = &ctx->rs;
-#else
-    (void) restart_enabled;
-#endif
-
-#if defined(MBEDTLS_ECP_RESTARTABLE)
-    if( ( ret = ecdh_gen_public_restartable( &ctx->grp, &ctx->d, &ctx->Q,
-                                             f_rng, p_rng, rs_ctx ) ) != 0 )
-        return( ret );
-#else
-    if( ( ret = mbedtls_ecdh_gen_public( &ctx->grp, &ctx->d, &ctx->Q,
-                                         f_rng, p_rng ) ) != 0 )
-        return( ret );
-#endif /* MBEDTLS_ECP_RESTARTABLE */
-
-    return mbedtls_ecp_tls_write_point( &ctx->grp, &ctx->Q, point_format, olen,
-                                        buf, blen );
-}
-
-/*
- * Setup and export the client public value
- */
-int mbedtls_ecdh_make_public( mbedtls_ecdh_context *ctx, size_t *olen,
-                              unsigned char *buf, size_t blen,
-                              int (*f_rng)(void *, unsigned char *, size_t),
-                              void *p_rng )
-{
-    int restart_enabled = 0;
-    ECDH_VALIDATE_RET( ctx != NULL );
-    ECDH_VALIDATE_RET( olen != NULL );
-    ECDH_VALIDATE_RET( buf != NULL );
-    ECDH_VALIDATE_RET( f_rng != NULL );
-
-#if defined(MBEDTLS_ECP_RESTARTABLE)
-    restart_enabled = ctx->restart_enabled;
-#endif
-
-#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT)
-    return( ecdh_make_public_internal( ctx, olen, ctx->point_format, buf, blen,
-                                       f_rng, p_rng, restart_enabled ) );
-#else
-    switch( ctx->var )
-    {
-#if defined(MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED)
-        case MBEDTLS_ECDH_VARIANT_EVEREST:
-            return( mbedtls_everest_make_public( &ctx->ctx.everest_ecdh, olen,
-                                                 buf, blen, f_rng, p_rng ) );
-#endif
-        case MBEDTLS_ECDH_VARIANT_MBEDTLS_2_0:
-            return( ecdh_make_public_internal( &ctx->ctx.mbed_ecdh, olen,
-                                               ctx->point_format, buf, blen,
-                                               f_rng, p_rng,
-                                               restart_enabled ) );
-        default:
-            return MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
-    }
-#endif
-}
-
-static int ecdh_read_public_internal( mbedtls_ecdh_context_mbed *ctx,
-                                      const unsigned char *buf, size_t blen )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    const unsigned char *p = buf;
-
-    if( ( ret = mbedtls_ecp_tls_read_point( &ctx->grp, &ctx->Qp, &p,
-                                            blen ) ) != 0 )
-        return( ret );
-
-    if( (size_t)( p - buf ) != blen )
-        return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
-
-    return( 0 );
-}
-
-/*
- * Parse and import the client's public value
- */
-int mbedtls_ecdh_read_public( mbedtls_ecdh_context *ctx,
-                              const unsigned char *buf, size_t blen )
-{
-    ECDH_VALIDATE_RET( ctx != NULL );
-    ECDH_VALIDATE_RET( buf != NULL );
-
-#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT)
-    return( ecdh_read_public_internal( ctx, buf, blen ) );
-#else
-    switch( ctx->var )
-    {
-#if defined(MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED)
-        case MBEDTLS_ECDH_VARIANT_EVEREST:
-            return( mbedtls_everest_read_public( &ctx->ctx.everest_ecdh,
-                                                 buf, blen ) );
-#endif
-        case MBEDTLS_ECDH_VARIANT_MBEDTLS_2_0:
-            return( ecdh_read_public_internal( &ctx->ctx.mbed_ecdh,
-                                                       buf, blen ) );
-        default:
-            return MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
-    }
-#endif
-}
-
-static int ecdh_calc_secret_internal( mbedtls_ecdh_context_mbed *ctx,
-                                      size_t *olen, unsigned char *buf,
-                                      size_t blen,
-                                      int (*f_rng)(void *,
-                                                   unsigned char *,
-                                                   size_t),
-                                      void *p_rng,
-                                      int restart_enabled )
-{
-    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-#if defined(MBEDTLS_ECP_RESTARTABLE)
-    mbedtls_ecp_restart_ctx *rs_ctx = NULL;
-#endif
-
-    if( ctx == NULL || ctx->grp.pbits == 0 )
-        return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
-
-#if defined(MBEDTLS_ECP_RESTARTABLE)
-    if( restart_enabled )
-        rs_ctx = &ctx->rs;
-#else
-    (void) restart_enabled;
-#endif
-
-#if defined(MBEDTLS_ECP_RESTARTABLE)
-    if( ( ret = ecdh_compute_shared_restartable( &ctx->grp, &ctx->z, &ctx->Qp,
-                                                 &ctx->d, f_rng, p_rng,
-                                                 rs_ctx ) ) != 0 )
-    {
-        return( ret );
-    }
-#else
-    if( ( ret = mbedtls_ecdh_compute_shared( &ctx->grp, &ctx->z, &ctx->Qp,
-                                             &ctx->d, f_rng, p_rng ) ) != 0 )
-    {
-        return( ret );
-    }
-#endif /* MBEDTLS_ECP_RESTARTABLE */
-
-    if( mbedtls_mpi_size( &ctx->z ) > blen )
-        return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
-
-    *olen = ctx->grp.pbits / 8 + ( ( ctx->grp.pbits % 8 ) != 0 );
-
-    if( mbedtls_ecp_get_type( &ctx->grp ) == MBEDTLS_ECP_TYPE_MONTGOMERY )
-        return mbedtls_mpi_write_binary_le( &ctx->z, buf, *olen );
-
-    return mbedtls_mpi_write_binary( &ctx->z, buf, *olen );
-}
-
-/*
- * Derive and export the shared secret
- */
-int mbedtls_ecdh_calc_secret( mbedtls_ecdh_context *ctx, size_t *olen,
-                              unsigned char *buf, size_t blen,
-                              int (*f_rng)(void *, unsigned char *, size_t),
-                              void *p_rng )
-{
-    int restart_enabled = 0;
-    ECDH_VALIDATE_RET( ctx != NULL );
-    ECDH_VALIDATE_RET( olen != NULL );
-    ECDH_VALIDATE_RET( buf != NULL );
-
-#if defined(MBEDTLS_ECP_RESTARTABLE)
-    restart_enabled = ctx->restart_enabled;
-#endif
-
-#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT)
-    return( ecdh_calc_secret_internal( ctx, olen, buf, blen, f_rng, p_rng,
-                                       restart_enabled ) );
-#else
-    switch( ctx->var )
-    {
-#if defined(MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED)
-        case MBEDTLS_ECDH_VARIANT_EVEREST:
-            return( mbedtls_everest_calc_secret( &ctx->ctx.everest_ecdh, olen,
-                                                 buf, blen, f_rng, p_rng ) );
-#endif
-        case MBEDTLS_ECDH_VARIANT_MBEDTLS_2_0:
-            return( ecdh_calc_secret_internal( &ctx->ctx.mbed_ecdh, olen, buf,
-                                               blen, f_rng, p_rng,
-                                               restart_enabled ) );
-        default:
-            return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
-    }
-#endif
-}
-
-#endif /* MBEDTLS_ECDH_C */