class Net::SSH::Transport::Kex::DiffieHellmanGroup1SHA1

A key-exchange service implementing the “diffie-hellman-group1-sha1” key-exchange algorithm.

Constants

G

The group constant

P_r

The radix in which P_s represents the value of P

P_s

The value of 'P', as a string, in hexadecimal

Attributes

algorithms[R]
connection[R]
data[R]
dh[R]
digester[R]
g[R]
p[R]

Public Class Methods

new(algorithms, connection, data) click to toggle source

Create a new instance of the DiffieHellmanGroup1SHA1 algorithm. The data is a Hash of symbols representing information required by this algorithm, which was acquired during earlier processing.

# File lib/net/ssh/transport/kex/diffie_hellman_group1_sha1.rb, line 42
def initialize(algorithms, connection, data)
  @p = get_p
  @g = get_g

  @digester = OpenSSL::Digest::SHA1
  @algorithms = algorithms
  @connection = connection

  @data = data.dup
  @dh = generate_key
  @logger = @data.delete(:logger)
end

Public Instance Methods

exchange_keys() click to toggle source

Perform the key-exchange for the given session, with the given data. This method will return a hash consisting of the following keys:

  • :session_id

  • :server_key

  • :shared_secret

  • :hashing_algorithm

The caller is expected to be able to understand how to use these deliverables.

# File lib/net/ssh/transport/kex/diffie_hellman_group1_sha1.rb, line 66
def exchange_keys
  result = send_kexinit
  verify_server_key(result[:server_key])
  session_id = verify_signature(result)
  confirm_newkeys

  return { session_id: session_id,
           server_key: result[:server_key],
           shared_secret: result[:shared_secret],
           hashing_algorithm: digester }
end