1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
#!/usr/bin/env ruby
$: << '../lib'
$: << '.'
#require 'gssapi/heimdal'
require 'gssapi'
require 'gss_iov_helpers'
require 'base64'
require 'socket'
class GssIovClient
include GssIOVHelpers
def initialize
@host = 'example.org'
@service = 'host'
@sock = TCPSocket.new(@host, 8082)
@gss = GSSAPI::Simple.new(@host, @service)
end
def run
handshake
begin
print "> "
msg = STDIN.gets.chomp
emsg = iov_encrypt(msg)
@sock.write("#{emsg.last}\n")
end while msg != 'exit'
@sock.close
end
private
def handshake
tok = @gss.init_context
stok = Base64.strict_encode64(tok)
@sock.write("#{stok}\n") # send initial token
stok = @sock.gets.chomp # get back continuation token
ctx = @gss.init_context(Base64.strict_decode64(stok.chomp)) # complete security context
puts "Connection #{(ctx ? 'succeeded' : 'failed')}"
end
# Encrypt message
def msg_enc(msg)
emsg = @gss.wrap_message(msg)
Base64.strict_encode64(emsg)
end
end
cli = GssIovClient.new
cli.run
|
