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  3. March 2021

Re: How to validate passwords without storing them anywhere.

Rob,

I agree with Calvin.  Consider using a one-way hash instead of an encrypted word. Each time you receive a password, salt it, then hash it.  If creating the user, store the hashed value.  If checking a password, compare the hashed value to the stored one.

-SK

On 3/17/2021 1:46 PM, Calvin Buckley wrote:
This sample is really concerning without any attention to salting... or
cryptography. Not only is 3DES very busted, it's also not the
appropriate algorithm assuming it's secure. You'd want one-way hashing
(the archetypical example is MD5, but it too is old and busted), plus
salting so someone can't just precompute a bunch of hashes.

Ideally, you'd want password hashing algorithms designed special-
purpose, like bcrypt (disclaimer: I have an ILE port of bcrypt, all
open source). Those are specifically optimized for password hashing by
being expensive to hash, whereas MD5/SHA are designed to be cheap
(because they're designed for general integrity).



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