On 8/31/2017 8:36 PM, John Abreau wrote: > Has anyone published research into using multiple hashes to address this, > to determine if two files with different contents could have both identical > MD5 hashes and identical SHA1 or SHA256 hashes? And other mechanisms, yes: https://github.com/sahib/rmlint/blob/master/docs/cautions.rst -- Rich P.