```ruby
module Nexpose
  # SharedSecret class for pairing engines
  class SharedSecret
    attr_accessor :key_string
    attr_accessor :ttl

    def initialize(console, time_to_live)
      uri = "/data/admin/global/shared-secret?time-to-live=#{time_to_live}"
      json = AJAX.put(console, uri)
      from_json(json)
    end

    def self.from_json(json)
      new.tap do |shared_secret|
        shared_secret.key_string = json['keyString']
        shared_secret.ttl = json['timeToLiveInSeconds']
      end
    end

    def delete(console)
      uri = "/data/admin/global/remove-shared-secret?key-string=#{key_string}"
      AJAX.delete(console, uri)
    end

    def ==(other)
      return false unless self.class == other.class
      return false unless key_string.upcase == other.key_string.upcase

      true
    end
    alias_method :eql?, :==
  end
end
```

Update after testing with cucumber
user
```ruby
module Nexpose
  # SharedSecret class for pairing engines
  class SharedSecret < APIObject
    attr_reader :key_string
    attr_reader :ttl

    def initialize(console, time_to_live)
      uri = "/data/admin/global/shared-secret?time-to-live=#{time_to_live}"
      json = JSON.parse(AJAX.put(console, uri))
      self.from_json(json)
    end

    def from_json(json)
      @key_string = json['keyString']
      @ttl = json['timeToLiveInSeconds']
    end

    def delete(console)
      uri = "/data/admin/global/remove-shared-secret?key-string=#{key_string}"
      AJAX.delete(console, uri)
    end

    def ==(other)
      return false unless self.class == other.class
      return false unless key_string.upcase == other.key_string.upcase

      true
    end
    alias_method :eql?, :==
  end
end
```
assistant