No, I think backdoor is the appropriate term, not least of all because the first sentence of the Wikipedia entry you linked identifies the Clipper chip as such.

No, I think backdoor is the appropriate term, not least of all because the first sentence of the Wikipedia entry you linked identifies the Clipper chip as such. As long as we're nitpicking word choice, the word allegory does not apply here. An allegory is an intentional narrative device employed by an author or artist. Two things you find to be similar does not constitute an allegory. The link you identify is pretty tenuous. With the Clipper chip, the government wanted access to live communications, not information about the infrastructure the communications were passing through. That is not the case with the recent EO.