class Devise::CachingKeyGenerator
CachingKeyGenerator
is a wrapper around KeyGenerator
which allows users to avoid re-executing the key generation process when it’s called using the same salt and key_size
Public Class Methods
new(key_generator)
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# File lib/devise/token_generator.rb, line 58 def initialize(key_generator) @key_generator = key_generator @cache_keys = ThreadSafe::Cache.new end
Public Instance Methods
generate_key(salt, key_size=64)
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Returns a derived key suitable for use. The default key_size is chosen to be compatible with the default settings of ActiveSupport::MessageVerifier. i.e. OpenSSL::Digest::SHA1#block_length
# File lib/devise/token_generator.rb, line 66 def generate_key(salt, key_size=64) @cache_keys["#{salt}#{key_size}"] ||= @key_generator.generate_key(salt, key_size) end