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Are there any front-running approaches to using server-generated hashes to encapsulate patient condition in a concise manner while maximizing security?

For example, a system to represent current med profile in a hash that can be used to check for contraindications without revealing the specific component prescriptions?

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Do you know of any comparable system from any other field? I can't imagine a system that can check for contraindications unless it knows the specific component prescriptions. –  Mike Schenk Oct 13 '11 at 5:04
    
So you want to do the following. I'm allergic to medicine A, and medicine B. You want a system that returns a hash, and with that hash you can check for a specific contraindication. So you can check for medicine A only, without revealing I'm allergic to medicine B too? –  Timo Willemsen Oct 13 '11 at 7:01
    
I'm wholly confused why you want to consider this. Cryptographic hashing is mostly used when you only want to verify an input data for uniqueness, such as finding duplicate files or checking that a password is valid without having to store them (because there is no valid case for knowing the password, you only want to verify it). Perhaps you aim to restrict display of medications unless there is an alert? What circumstance would one ever be in a position to view some but not all medications prescribed? –  Jeff Ferland Oct 17 '11 at 19:11
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migrated to security.stackexchange.com by jonsca May 1 '12 at 11:12

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