> Since this argument only takes into account commodity hardware and not instruction set improvements (e.g., ARM 8 specifies a SHA-1 instruction), [...] the nee

> Since this argument only takes into account commodity hardware and not instruction set improvements (e.g., ARM 8 specifies a SHA-1 instruction), [...] the need to transition from SHA-1 for collision resistance functions is probably more urgent than this back-of-the-envelope analysis suggests. So the ARM 8 SHA-1 instruction contributes to making itself obsolete? :-)