Handshake message processing (TLS client) More...

#include "tls.h"

Functions
error_t	tlsSendClientHello (TlsContext *context)
	Send ClientHello message. More...

error_t	tlsSendClientKeyExchange (TlsContext *context)
	Send ClientKeyExchange message. More...

error_t	tlsFormatClientHello (TlsContext context, TlsClientHello message, size_t *length)
	Format ClientHello message. More...

error_t	tlsFormatClientKeyExchange (TlsContext context, TlsClientKeyExchange message, size_t *length)
	Format ClientKeyExchange message. More...

error_t	tlsParseHelloRequest (TlsContext context, const TlsHelloRequest message, size_t length)
	Parse HelloRequest message. More...

error_t	tlsParseServerHello (TlsContext context, const TlsServerHello message, size_t length)
	Parse ServerHello message. More...

error_t	tlsParseServerKeyExchange (TlsContext context, const TlsServerKeyExchange message, size_t length)
	Parse ServerKeyExchange message. More...

error_t	tlsParseCertificateRequest (TlsContext context, const TlsCertificateRequest message, size_t length)
	Parse CertificateRequest message. More...

error_t	tlsParseServerHelloDone (TlsContext context, const TlsServerHelloDone message, size_t length)
	Parse ServerHelloDone message. More...

error_t	tlsParseNewSessionTicket (TlsContext context, const TlsNewSessionTicket message, size_t length)
	Parse NewSessionTicket message. More...

Detailed Description

Handshake message processing (TLS client)

License

SPDX-License-Identifier: GPL-2.0-or-later

This file is part of CycloneSSL Open.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

Author: Oryx Embedded SARL (www.oryx-embedded.com)

Version: 2.4.4

Definition in file tls_client.h.

Function Documentation

◆ tlsFormatClientHello()

error_t tlsFormatClientHello	(	TlsContext *	context,
		TlsClientHello *	message,
		size_t *	length
	)

Format ClientHello message.

Parameters

[in]	context	Pointer to the TLS context
[out]	message	Buffer where to format the ClientHello message
[out]	length	Length of the resulting ClientHello message

Returns: Error code

Definition at line 312 of file tls_client.c.

◆ tlsFormatClientKeyExchange()

error_t tlsFormatClientKeyExchange	(	TlsContext *	context,
		TlsClientKeyExchange *	message,
		size_t *	length
	)

Format ClientKeyExchange message.

Parameters

[in]	context	Pointer to the TLS context
[out]	message	Buffer where to format the ClientKeyExchange message
[out]	length	Length of the resulting ClientKeyExchange message

Returns: Error code

Definition at line 785 of file tls_client.c.

◆ tlsParseCertificateRequest()

error_t tlsParseCertificateRequest	(	TlsContext *	context,
		const TlsCertificateRequest *	message,
		size_t	length
	)

Parse CertificateRequest message.

A server can optionally request a certificate from the client, if appropriate for the selected cipher suite. This message will immediately follow the ServerKeyExchange message

Parameters

[in]	context	Pointer to the TLS context
[in]	message	Incoming CertificateRequest message to parse
[in]	length	Message length

Returns: Error code

Definition at line 1524 of file tls_client.c.

◆ tlsParseHelloRequest()

error_t tlsParseHelloRequest	(	TlsContext *	context,
		const TlsHelloRequest *	message,
		size_t	length
	)

Parse HelloRequest message.

HelloRequest is a simple notification that the client should begin the negotiation process anew. In response, the client should send a ClientHello message when convenient

Parameters

[in]	context	Pointer to the TLS context
[in]	message	Incoming HelloRequest message to parse
[in]	length	Message length

Returns: Error code

Definition at line 872 of file tls_client.c.

◆ tlsParseNewSessionTicket()

error_t tlsParseNewSessionTicket	(	TlsContext *	context,
		const TlsNewSessionTicket *	message,
		size_t	length
	)

Parse NewSessionTicket message.

This NewSessionTicket message is sent by the server during the TLS handshake before the ChangeCipherSpec message

Parameters

[in]	context	Pointer to the TLS context
[in]	message	Incoming NewSessionTicket message to parse
[in]	length	Message length

Returns: Error code

Definition at line 1914 of file tls_client.c.

◆ tlsParseServerHello()

error_t tlsParseServerHello	(	TlsContext *	context,
		const TlsServerHello *	message,
		size_t	length
	)

Parse ServerHello message.

The server will send this message in response to a ClientHello message when it was able to find an acceptable set of algorithms. If it cannot find such a match, it will respond with a handshake failure alert

Parameters

[in]	context	Pointer to the TLS context
[in]	message	Incoming ServerHello message to parse
[in]	length	Message length

Returns: Error code

Definition at line 957 of file tls_client.c.

◆ tlsParseServerHelloDone()

error_t tlsParseServerHelloDone	(	TlsContext *	context,
		const TlsServerHelloDone *	message,
		size_t	length
	)

Parse ServerHelloDone message.

The ServerHelloDone message is sent by the server to indicate the end of the ServerHello and associated messages. After sending this message, the server will wait for a client response

Parameters

[in]	context	Pointer to the TLS context
[in]	message	Incoming ServerHelloDone message to parse
[in]	length	Message length

Returns: Error code

Definition at line 1828 of file tls_client.c.

◆ tlsParseServerKeyExchange()

error_t tlsParseServerKeyExchange	(	TlsContext *	context,
		const TlsServerKeyExchange *	message,
		size_t	length
	)

Parse ServerKeyExchange message.

The ServerKeyExchange message is sent by the server only when the server Certificate message does not contain enough data to allow the client to exchange a premaster secret

Parameters

[in]	context	Pointer to the TLS context
[in]	message	Incoming ServerKeyExchange message to parse
[in]	length	Message length

Returns: Error code

Definition at line 1365 of file tls_client.c.

◆ tlsSendClientHello()

error_t tlsSendClientHello ( TlsContext * context )

Send ClientHello message.

When a client first connects to a server, it is required to send the ClientHello as its first message. The client can also send a ClientHello in response to a HelloRequest or on its own initiative in order to renegotiate the security parameters in an existing connection

Parameters

[in] context Pointer to the TLS context

Returns: Error code

Definition at line 81 of file tls_client.c.

◆ tlsSendClientKeyExchange()

error_t tlsSendClientKeyExchange ( TlsContext * context )

Send ClientKeyExchange message.

This message is always sent by the client. It must immediately follow the client Certificate message, if it is sent. Otherwise, it must be the first message sent by the client after it receives the ServerHelloDone message

Parameters

[in] context Pointer to the TLS context

Returns: Error code

Definition at line 261 of file tls_client.c.

Functions

Detailed Description

License

Function Documentation

◆ tlsFormatClientHello()

◆ tlsFormatClientKeyExchange()

◆ tlsParseCertificateRequest()

◆ tlsParseHelloRequest()

◆ tlsParseNewSessionTicket()

◆ tlsParseServerHello()

◆ tlsParseServerHelloDone()

◆ tlsParseServerKeyExchange()

◆ tlsSendClientHello()

◆ tlsSendClientKeyExchange()