Module: HrrRbSsh::Transport::MacAlgorithm::Functionable

Included in:
HmacMd5, HmacMd5_96, HmacSha1, HmacSha1_96
Defined in:
lib/hrr_rb_ssh/transport/mac_algorithm/functionable.rb

Instance Method Summary collapse

Instance Method Details

#compute(sequence_number, unencrypted_packet) ⇒ Object 



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# File 'lib/hrr_rb_ssh/transport/mac_algorithm/functionable.rb', line 24

def compute sequence_number, unencrypted_packet
  data = HrrRbSsh::Transport::DataType::Uint32.encode(sequence_number) + unencrypted_packet
  digest = OpenSSL::HMAC.digest self.class::DIGEST, @key, data
  digest[0, digest_length]
end

#digest_length ⇒ Object 



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# File 'lib/hrr_rb_ssh/transport/mac_algorithm/functionable.rb', line 16

def digest_length
  self.class::DIGEST_LENGTH
end

#initialize(key) ⇒ Object 



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# File 'lib/hrr_rb_ssh/transport/mac_algorithm/functionable.rb', line 10

def initialize key
  super

  @key = key
end

#key_length ⇒ Object 



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# File 'lib/hrr_rb_ssh/transport/mac_algorithm/functionable.rb', line 20

def key_length
  self.class::KEY_LENGTH
end