Class: CyberplatPKI::Document

Inherits:
Object
  • Object
show all
Defined in:
lib/cyberplat_pki/document.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Document

Returns a new instance of Document.



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# File 'lib/cyberplat_pki/document.rb', line 9

def initialize
  @engine = nil
  @type = nil
  @subject = nil
  @ca = nil
  @body = nil
  @signature = nil
  @unknown1 = nil
end

Instance Attribute Details

#body ⇒ Object

Returns the value of attribute body.



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# File 'lib/cyberplat_pki/document.rb', line 7

def body
  @body
end

#ca ⇒ Object

Returns the value of attribute ca.



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# File 'lib/cyberplat_pki/document.rb', line 7

def ca
  @ca
end

#data_length ⇒ Object

Returns the value of attribute data_length.



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# File 'lib/cyberplat_pki/document.rb', line 7

def data_length
  @data_length
end

#engine ⇒ Object

Returns the value of attribute engine.



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# File 'lib/cyberplat_pki/document.rb', line 7

def engine
  @engine
end

#signature ⇒ Object

Returns the value of attribute signature.



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# File 'lib/cyberplat_pki/document.rb', line 7

def signature
  @signature
end

#subject ⇒ Object

Returns the value of attribute subject.



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# File 'lib/cyberplat_pki/document.rb', line 7

def subject
  @subject
end

#type ⇒ Object

Returns the value of attribute type.



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# File 'lib/cyberplat_pki/document.rb', line 7

def type
  @type
end

Class Method Details

.decode64(data) ⇒ Object 



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# File 'lib/cyberplat_pki/document.rb', line 57

def self.decode64(data)
  lines = data.split "\r\n"

  data = ""
  crc = nil

  lines.each do |line|
    if line[0] == '='
      crc, = "\0".concat(Base64.decode64(line[1..-1])).unpack('N')
    else
      data << line
    end
  end

  data = Base64.decode64 data

  if !crc.nil?
    calculated_crc = Digest::CRC24.checksum data

    raise "CyberplatPKI: CRYPT_ERR_RADIX_DECODE (invalid data checksum)" if calculated_crc != crc
  end

  data
end

.encode64(data) ⇒ Object 



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# File 'lib/cyberplat_pki/document.rb', line 47

def self.encode64(data)
  encoded = Base64.encode64(data).gsub /\n/, "\r\n"

  crc = Digest::CRC24.checksum data

  encoded << "=#{Base64.encode64([ crc ].pack("N")[1..-1])[0..-2]}"

  encoded
end

.load(source) ⇒ Object 



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# File 'lib/cyberplat_pki/document.rb', line 19

def self.load(source)
  source = source.sub /^[ \t\n\r]*/, ''

  io = StringIO.new source, "rb"
  io.extend DocumentIORoutines

  documents = []

  until io.eof?
    begin
      documents << io.read_document
    rescue EOFError => e
      raise "CyberplatPKI: CRYPT_ERR_INVALID_FORMAT (unexpected end of document)"
    end
  end

  documents
end

.save(documents) ⇒ Object 



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# File 'lib/cyberplat_pki/document.rb', line 38

def self.save(documents)
  io = StringIO.new '', "wb"
  io.extend DocumentIORoutines

  documents.each { |document| io.write_document document }

  io.string[0...-2] # Strip trailing CRLF of last document
end