I'm trying to make certain I'm understanding the purpose behind the Quark algorithm.
There are lots of devices that need secure algorithms but have severe power and processing constraints such as RFIDs (the chips found in everything from clothes to cars) - hence Quark (and other algorithms) were developed. Quark seems to be secure and yet lightweight enough that CPUs are more that capable of hashing them without maxing out.
I've read lots of articles and posts that come up with reasons pro and con re Quark. What I'm wondering about is what makes Quark worthy as an algorithm for a currency? One advantage is that it uses multiple algorithms and the chance of multiple hash functions getting cracked at the same time approaches zero. But why would we really care if more or less electricity is being spent in creating a block? Of course I want my electric costs to be less - the same as anyone else. But more important than my electric costs is knowing that the currency is secure. I would also prefer that mining is distributed across the network (as opposed to ASICs) but again what counts first and foremost is that the system is secure.
That being the case how is an algorithm designed for RFID's able to compete with SHA256?
I'm still struggling with these algorithms so I may be missing something very basic.