Based on this by HKJ, a CR123 is roughly equivalent to 2xAA. So if you find a 2xAA boost driver that can go up to lithium ion voltages (4.2v) then you’re set.
This one looks reasonable but it has strobe.
This one has 4 mode groups but only says it goes up to 3.3v. I’d bet it would survive a 16340 though. Just a guess… If the battery voltage is more than the LED Vf, then it’ll probably be direct drive though.