Questions tagged [hashing]

Mathematica always interprets the input of the Hash function as a string. I would expect this: IntegerString[ Hash[FromDigits["00010966776006953D5567439E5E39F86A0D273BEE", 16], "SHA256"], 16, 64] to give…

Currently Mathematica offers support of a bunch of different hash algorithms. I would like to add my own to the list. In this way I can still use the function Hash[]. This allows me to switch between one of Mathematica's predefined algorithms, say…

I see when people write code on calculating MD5, (even in the documentation), they write like this: IntegerString[Hash[something, "MD5"], 16, 32] But I think that Hash[something, "MD5"] already returns the 128-bit MD5, and I observed that…

Below, I define two expressions X and Y (which arose in the wild!) such that not only Hash[X] == Hash[Y] but Hash[{1}~Join~X] == Hash[{1}~Join~Y] (and similarly for prepending and appending other lists), but X =!= Y (hint: look at the rule for…