Class: CcipherBox::EncKeyConfig

Inherits:
Object
  • Object
show all
Includes:
TR::CondUtils
Defined in:
lib/ccipher_box/enc_key_config.rb

Overview

link between data encryption key name with their respective key configs In a specific configurations, there might be many data encryption key and the key config to derive the data encryption key from a base key is kept here for later rebuild the same key again Only used inside SecureRing

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ EncKeyConfig

Returns a new instance of EncKeyConfig.



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# File 'lib/ccipher_box/enc_key_config.rb', line 15

def initialize
  @keyConfigs = {  }
end

Class Method Details

.from_encoded(seq) ⇒ Object 



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# File 'lib/ccipher_box/enc_key_config.rb', line 60

def self.from_encoded(seq)
 
  ekc = EncKeyConfig.new
  seq.each do |sst|
    st = BinStruct.instance.struct_from_bin(sst)
    case st.oid
    when CBTag.constant_value(:keyConfig)
      ekc.register_config(st.name, st.keyConfig)
    when CBTag.constant_value(:keyConfig_from_base)
      ekc.register_config(st.name, st.keyConfig, st.baseName, st.baseKeyConfig)
    end
  end

  ekc

end

Instance Method Details

#encoded ⇒ Object 



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# File 'lib/ccipher_box/enc_key_config.rb', line 35

def encoded

  configs = []
  @keyConfigs.each do |name, val|

    if not_empty?(val[:base])
      st = BinStruct.instance.struct(:keyConfig_from_base)
      st.name = name
      st.keyConfig = val[:config]
      st.baseName = val[:base]
      st.baseKeyConfig = val[:baseConfig]
    else
      st = BinStruct.instance.struct(:keyConfig)
      st.name = name
      st.keyConfig = val[:config]
    end

    configs << st.encoded

  end

  configs

end

#is_derived_key?(hash) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ccipher_box/enc_key_config.rb', line 31

def is_derived_key?(hash)
  not_empty?(hash[:base])
end

#keyConfigs ⇒ Object 



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# File 'lib/ccipher_box/enc_key_config.rb', line 27

def keyConfigs
  @keyConfigs.freeze
end

#register_config(name, keyConfig) ⇒ Object 



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# File 'lib/ccipher_box/enc_key_config.rb', line 19

def register_config(name, keyConfig)
  @keyConfigs[name] = { config: keyConfig }  
end

#register_derive_config(name, keyConfig, baseName, baseKeyConfig) ⇒ Object 



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# File 'lib/ccipher_box/enc_key_config.rb', line 23

def register_derive_config(name, keyConfig, baseName, baseKeyConfig)
  @keyConfigs[name] = { config: keyConfig, base: baseName, baseConfig: baseKeyConfig } 
end