module HrrRbSsh::Transport::MacAlgorithm::Functionable

Public Class Methods

new(key, logger: nil) click to toggle source
# File lib/hrr_rb_ssh/transport/mac_algorithm/functionable.rb, line 12
def initialize key, logger: nil
  self.logger = logger
  @key = key
end

Public Instance Methods

compute(sequence_number, unencrypted_packet) click to toggle source
# File lib/hrr_rb_ssh/transport/mac_algorithm/functionable.rb, line 25
def compute sequence_number, unencrypted_packet
  data = DataType::Uint32.encode(sequence_number) + unencrypted_packet
  digest = OpenSSL::HMAC.digest self.class::DIGEST, @key, data
  digest[0, digest_length]
end
digest_length() click to toggle source
# File lib/hrr_rb_ssh/transport/mac_algorithm/functionable.rb, line 17
def digest_length
  self.class::DIGEST_LENGTH
end
key_length() click to toggle source
# File lib/hrr_rb_ssh/transport/mac_algorithm/functionable.rb, line 21
def key_length
  self.class::KEY_LENGTH
end