For backwards compatibility, Chef implements decryption/deserialization for older encrypted data bag item formats in addition to the current version. Each decryption/deserialization strategy is implemented as a class in this namespace. For convenience the factory method +Decryptor.for()+ can be used to create an instance of the appropriate strategy for the given encrypted data bag value.
Detects the encrypted data bag item format version and instantiates a decryptor object for that version. Call for_decrypted_item on the resulting object to decrypt and deserialize it.
# File lib/chef/encrypted_data_bag_item.rb, line 74 def self.for(encrypted_value, key) case format_version_of(encrypted_value) when 1 Version1Decryptor.new(encrypted_value, key) when 0 Version0Decryptor.new(encrypted_value, key) else raise UnsupportedEncryptedDataBagItemFormat, "This version of chef does not support encrypted data bag item format version '#{format_version}'" end end
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