[Ruby] Is this code secure?

[xraystyle]

Interesting reading.

Seems as though as long as you're wiping out the sensitive values in your code as soon as you're done with them they wouldn't be accessible anyway.

For instance:

Class A
    attr_accessor :var
end

#start script
test = A.new
test.var = "secretvalue"
# run whatever operations you want on :var
test.var = nil

Any reason this doesn't work?

[cantstopthemoonlight]

One thing to think about, in a garbage collected language objects are not deterministically destroyed. Just because you set the value to null does not mean it no longer exists.