Class: CcipherBox::DecryptionEngine
- Inherits:
-
Object
- Object
- CcipherBox::DecryptionEngine
- Includes:
- TR::CondUtils
- Defined in:
- lib/ccipher_box/decryption_engine.rb
Instance Method Summary collapse
- #final ⇒ Object
- #init(output) ⇒ Object
-
#initialize(vault) ⇒ DecryptionEngine
constructor
A new instance of DecryptionEngine.
- #update(data) ⇒ Object
Constructor Details
#initialize(vault) ⇒ DecryptionEngine
Returns a new instance of DecryptionEngine.
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# File 'lib/ccipher_box/decryption_engine.rb', line 7 def initialize(vault) @vault = vault end |
Instance Method Details
#final ⇒ Object
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# File 'lib/ccipher_box/decryption_engine.rb', line 69 def final @dec.decrypt_final if not @dec.nil? end |
#init(output) ⇒ Object
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# File 'lib/ccipher_box/decryption_engine.rb', line 11 def init(output) raise CcipherBox::Error, "Output is mandatory" if output.nil? @output = output @intOut = MemBuf.new end |
#update(data) ⇒ Object
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# File 'lib/ccipher_box/decryption_engine.rb', line 20 def update(data) if @dec.nil? @intOut.write(data) BinStruct.instance.find_struct(@intOut) do |, data| st = BinStruct.instance.struct_from_bin() st.baseMaterial.each do |ebm| begin baseMat = @vault.decrypt(ebm) sk = CcipherFactory::SymKey.from_encoded(st.keyConfig) do |ops| case ops when :password baseMat end end @dec = CcipherFactory::SymKeyCipher.decryptor @dec.output(@output) @dec.key = sk @dec.decrypt_init @dec.(st.cipherConfig) @dec.decrypt_update_cipher(data) if not_empty?(data) break rescue KeyNotRegistered # retry with next key end end raise KeyNotRegistered, "Cannot find any loaded key decrypt this data" if @dec.nil? end else @dec.decrypt_update_cipher(data) end end |