75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
/*
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* TLS 1.3 functionality shared between client and server
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*
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* Copyright The Mbed TLS Contributors
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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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#include "common.h"
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#if defined(MBEDTLS_SSL_TLS_C)
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#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
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#include "mbedtls/error.h"
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#include "ssl_misc.h"
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int mbedtls_ssl_start_handshake_msg( mbedtls_ssl_context *ssl,
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unsigned hs_type,
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unsigned char **buf,
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size_t *buflen )
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{
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*buf = ssl->out_msg + 4;
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*buflen = MBEDTLS_SSL_OUT_CONTENT_LEN - 4;
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ssl->out_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE;
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ssl->out_msg[0] = hs_type;
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return( 0 );
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}
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int mbedtls_ssl_finish_handshake_msg( mbedtls_ssl_context *ssl,
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size_t buf_len,
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size_t msg_len )
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{
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int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
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((void) buf_len);
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ssl->out_msglen = msg_len + 4;
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MBEDTLS_SSL_PROC_CHK( mbedtls_ssl_write_handshake_msg_ext, ( ssl, 0 ) );
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cleanup:
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return( ret );
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}
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void mbedtls_ssl_add_hs_hdr_to_checksum( mbedtls_ssl_context *ssl,
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unsigned hs_type,
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size_t total_hs_len )
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{
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unsigned char hs_hdr[4];
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/* Build HS header for checksum update. */
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hs_hdr[0] = hs_type;
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hs_hdr[1] = (unsigned char)( total_hs_len >> 16 );
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hs_hdr[2] = (unsigned char)( total_hs_len >> 8 );
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hs_hdr[3] = (unsigned char)( total_hs_len >> 0 );
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ssl->handshake->update_checksum( ssl, hs_hdr, sizeof( hs_hdr ) );
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}
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#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
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#endif /* MBEDTLS_SSL_TLS_C */
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