Method: SSHData::Encoding#decode_certificate

Defined in:
lib/ssh_data/encoding.rb

#decode_certificate(raw, offset = 0) ⇒ Object

Decode the fields in a certificate.

raw - Binary String certificate as described by RFC4253 section 6.6. offset - Integer number of bytes into raw at which we should start

reading.

Returns an Array containing a Hash describing the certificate and the Integer number of bytes read.



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# File 'lib/ssh_data/encoding.rb', line 305

def decode_certificate(raw, offset=0)
  total_read = 0

  algo, read = decode_string(raw, offset + total_read)
  total_read += read

  unless key_algo = PUBLIC_KEY_ALGO_BY_CERT_ALGO[algo]
    raise AlgorithmError, "unknown algorithm: #{algo.inspect}"
  end

  data, read = decode_fields(raw, [
    [:nonce,            :string],
    [:public_key,       :public_key, key_algo],
    [:serial,           :uint64],
    [:type,             :uint32],
    [:key_id,           :string],
    [:valid_principals, :list],
    [:valid_after,      :time],
    [:valid_before,     :time],
    [:critical_options, :options],
    [:extensions,       :options],
    [:reserved,         :string],
    [:signature_key,    :string_public_key],
    [:signature,        :string],
  ], offset + total_read)
  total_read += read

  data[:algo] = algo

  [data, total_read]
end