mirror of
https://github.com/yuzu-emu/mbedtls.git
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201 lines
6.9 KiB
C
201 lines
6.9 KiB
C
/**
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* \file ecjpake.h
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*
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* \brief Elliptic curve J-PAKE
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*
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* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This file is part of mbed TLS (https://tls.mbed.org)
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*/
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#ifndef MBEDTLS_ECJPAKE_H
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#define MBEDTLS_ECJPAKE_H
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#include "ecp.h"
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#include "md.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct
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{
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const mbedtls_md_info_t *md_info; /**< Hash to use */
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mbedtls_ecp_group grp; /**< Elliptic curve */
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mbedtls_ecp_point X1; /**< Public key one */
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mbedtls_ecp_point X2; /**< Public key two */
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mbedtls_ecp_point X3; /**< Public key three */
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mbedtls_ecp_point X4; /**< Public key four */
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mbedtls_ecp_point Xp; /**< Peer's public key (Xs or Xc) */
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mbedtls_mpi xa; /**< Our first secret (x1 or x3) */
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mbedtls_mpi xb; /**< Our second secret (x2 or x4) */
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mbedtls_mpi s; /**< Pre-shared secret */
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} mbedtls_ecjpake_context;
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/*
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* \brief Initialize a context
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* (just makes it ready for setup() or free()).
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*
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* \param ctx context to initialize
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*/
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void mbedtls_ecjpake_init( mbedtls_ecjpake_context *ctx );
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/*
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* \brief Set up a context for use
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*
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* \note Currently the only values for hash/curve allowed by the
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* standard are MBEDTLS_MD_SHA256/MBEDTLS_ECP_DP_SECP256R1.
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*
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* \param ctx context to set up
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* \param hash hash function to use (MBEDTLS_MD_XXX)
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* \param curve elliptic curve identifier (MBEDTLS_ECP_DP_XXX)
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* \param secret shared secret
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* \param len length of the shared secret
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*
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* \return 0 if successfull,
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* a negative error code otherwise
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*/
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int mbedtls_ecjpake_setup( mbedtls_ecjpake_context *ctx,
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mbedtls_md_type_t hash,
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mbedtls_ecp_group_id curve,
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const unsigned char *secret,
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size_t len );
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/*
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* \brief Generate and write contents of ClientHello extension
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* (excluding extension type and length bytes)
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*
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* \param ctx Context to use
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* \param buf Buffer to write the contents to
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* \param len Buffer size
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* \param olen Will be updated with the number of bytes written
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* \param f_rng RNG function
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* \param p_rng RNG parameter
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*
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* \return 0 if successfull,
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* a negative error code otherwise
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*/
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int mbedtls_ecjpake_tls_write_client_ext( mbedtls_ecjpake_context *ctx,
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unsigned char *buf, size_t len, size_t *olen,
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int (*f_rng)(void *, unsigned char *, size_t),
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void *p_rng );
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/*
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* \brief Read and process contents of the ClientHello extension
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* (excluding extension type and length bytes)
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*
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* \param ctx Context to use
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* \param buf Pointer to extension contents
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* \param len Extension length
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*
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* \return 0 if successfull,
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* a negative error code otherwise
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*/
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int mbedtls_ecjpake_tls_read_client_ext( mbedtls_ecjpake_context *ctx,
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const unsigned char *buf,
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size_t len );
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/*
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* \brief Generate and write contents of ServerHello extension
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* (excluding extension type and length bytes)
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*
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* \param ctx Context to use
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* \param buf Buffer to write the contents to
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* \param len Buffer size
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* \param olen Will be updated with the number of bytes written
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* \param f_rng RNG function
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* \param p_rng RNG parameter
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*
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* \return 0 if successfull,
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* a negative error code otherwise
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*/
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int mbedtls_ecjpake_tls_write_server_ext( mbedtls_ecjpake_context *ctx,
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unsigned char *buf, size_t len, size_t *olen,
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int (*f_rng)(void *, unsigned char *, size_t),
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void *p_rng );
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/*
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* \brief Read and process contents of the ServerHello extension
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* (excluding extension type and length bytes)
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*
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* \param ctx Context to use
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* \param buf Pointer to extension contents
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* \param len Extension length
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*
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* \return 0 if successfull,
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* a negative error code otherwise
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*/
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int mbedtls_ecjpake_tls_read_server_ext( mbedtls_ecjpake_context *ctx,
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const unsigned char *buf,
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size_t len );
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/*
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* \brief Generate and write ServerECJPAKEParams
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* (the contents for the ServerKeyExchange)
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*
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* \param ctx Context to use
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* \param buf Buffer to write the contents to
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* \param len Buffer size
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* \param olen Will be updated with the number of bytes written
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* \param f_rng RNG function
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* \param p_rng RNG parameter
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*
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* \return 0 if successfull,
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* a negative error code otherwise
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*/
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int mbedtls_ecjpake_tls_write_server_params( mbedtls_ecjpake_context *ctx,
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unsigned char *buf, size_t len, size_t *olen,
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int (*f_rng)(void *, unsigned char *, size_t),
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void *p_rng );
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/*
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* \brief Read and process ServerECJPAKEParams
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* (the contents for the ServerKeyExchange)
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*
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* \param ctx Context to use
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* \param buf Pointer to the message
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* \param len Message length
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*
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* \return 0 if successfull,
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* a negative error code otherwise
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*/
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int mbedtls_ecjpake_tls_read_server_params( mbedtls_ecjpake_context *ctx,
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const unsigned char *buf,
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size_t len );
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/*
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* \brief Free a context's content
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*
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* \param ctx context to free
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*/
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void mbedtls_ecjpake_free( mbedtls_ecjpake_context *ctx );
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#if defined(MBEDTLS_SELF_TEST)
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/**
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* \brief Checkup routine
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*
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* \return 0 if successful, or 1 if a test failed
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*/
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int mbedtls_ecjpake_self_test( int verbose );
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* ecjpake.h */
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