Class: OoxmlDecrypt::KeyInfoBase

Inherits:
Object
  • Object
show all
Defined in:
lib/ooxml_decrypt/key_info_base.rb

Direct Known Subclasses

EncryptedKey, KeyData

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(opts) ⇒ KeyInfoBase

Returns a new instance of KeyInfoBase.



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# File 'lib/ooxml_decrypt/key_info_base.rb', line 6

def initialize(opts)
  @block_size = opts.delete(:block_size)
  @hash_algorithm = opts.delete(:hash_algorithm)
  @cipher_algorithm = opts.delete(:cipher_algorithm)
  @key_bits = opts.delete(:key_bits)
  @cipher_chaining = opts.delete(:cipher_chaining)
  @salt = opts.delete(:salt)

  raise "Unknown opts: #{opts.keys.join(',')}" if opts.any?
end

Class Method Details

.opts_from_xml_node(xml_node) ⇒ Object

Parses options that KeyInfoBase knows about from an XML node. (Helper function to be used by initializers in subclasses).

Parameters:

  • xml_node (Nokogiri::XML::Node) 


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# File 'lib/ooxml_decrypt/key_info_base.rb', line 20

def self.opts_from_xml_node(xml_node)
  opts = {
    :block_size => xml_node["blockSize"].to_i,
    :hash_algorithm => xml_node["hashAlgorithm"],
    :cipher_algorithm => xml_node["cipherAlgorithm"],
    :key_bits => xml_node["keyBits"].to_i,
    :cipher_chaining => xml_node["cipherChaining"],
    :salt => xml_node["saltValue"].base64_decode,
  }
end