class NetworkClipboard::AESConnection
Attributes
remote_client_id[R]
socket[R]
Public Class Methods
new(config,socket)
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# File lib/network_clipboard/connection.rb, line 19 def initialize(config,socket) @socket = socket @encryptor = OpenSSL::Cipher::AES.new(128, :CBC) @encryptor.encrypt @encryptor.key = config.secret @decryptor = OpenSSL::Cipher::AES.new(128, :CBC) @decryptor.decrypt @decryptor.key = config.secret handshake(config.client_id) end
Public Instance Methods
close_read()
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# File lib/network_clipboard/connection.rb, line 68 def close_read @socket.close_read end
close_write()
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# File lib/network_clipboard/connection.rb, line 72 def close_write @socket.close_write end
handshake(client_id)
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# File lib/network_clipboard/connection.rb, line 33 def handshake(client_id) iv = @encryptor.random_iv @socket.send([iv.size].pack('N'),0) @socket.send(iv,0) iv_size = @socket.read(4).unpack('N')[0] @decryptor.iv = @socket.read(iv_size) # Verify it all worked. send(HANDSHAKE_STRING) raise HandshakeException unless receive == HANDSHAKE_STRING send(client_id) @remote_client_id = receive end
receive()
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# File lib/network_clipboard/connection.rb, line 55 def receive() size_bits = @socket.read(4) if size_bits.nil? and @socket.eof? raise DisconnectedError end ciphertext_size = size_bits.unpack('N')[0] ciphertext = @socket.read(ciphertext_size) plaintext = @decryptor.update(ciphertext) + @decryptor.final @decryptor.reset return plaintext end
send(new_content)
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# File lib/network_clipboard/connection.rb, line 48 def send(new_content) ciphertext = @encryptor.update(new_content) + @encryptor.final @socket.send([ciphertext.size].pack('N'),0) @socket.send(ciphertext,0) @encryptor.reset end