Class: Net::SSH::Transport::Kex::DiffieHellmanGroup1SHA1

### Home Classes Methods

### In Files

- lib/net/ssh/transport/kex/diffie_hellman_group1_sha1.rb

### Parent

Object

### Methods

- ::new
- #exchange_keys

### Included Modules

- Net::SSH::Transport::Constants
- Net::SSH::Loggable

### Files

- README.rdoc

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# 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

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