ExpectClientHello

class mtf.network_port.tls.tls_helpers.ExpectClientHello

A class that processes the ClientHello message during a TLS handshake.

This class inherits from ExpectHandshake and is responsible for handling the ClientHello message as defined in the TLS protocol. The ClientHello message is the first message sent by the client to initiate the handshake.

Attributes:

client_ciphers (dict, optional): A dictionary to store the cipher suites

offered by the client.

__init__(client_ciphers=None)

Initializes the ExpectClientHello handler.

Args:

client_ciphers (dict, optional): A dictionary to store the cipher suites

offered by the client. Defaults to None.

process(state: ConnectionState, msg: Message)

Processes the ClientHello message received from the client.

This method asserts that the message is of the expected type and parses the ClientHello message. It extracts and stores the client’s cipher suites and TLS version in the provided state object. Additionally, it updates the handshake messages and hashes within the state.

Args:

state (object): The current state of the TLS connection, which will

be updated based on the parsed ClientHello message.

msg (object): The message object containing the ClientHello data.

Raises:

AssertionError: If the message type does not match the expected

ContentType or HandshakeType.

add_child(child)

Sets the parameter as the child of the node

Returns:

the child node

get_all_siblings()

Return iterator with all siblings of node

Return type:

iterator

is_command()

Flag to tell that the object is a message processor

is_expect()

Flag to tell if the object is a message processor

is_generator()

Flag to tell that the object is not a message generator

is_match(msg)

Check if message is a given type of handshake protocol message