>>508492519 (OP)TLDR missiles, magnetic sea mines, torpedo boats, fast attack patrols. You don't need to mine the whole thing, just heavily mine the 2 mile inbound or outbound deep water channels
Key Dimensions:
Total width of the Strait: ~33 nautical miles (about 61 kilometers or 38 miles) at its narrowest point.
Deepwater navigable channels:
The strait has two deepwater shipping lanes, one inbound and one outbound, each about 2 miles (3.2 km) wide.
These lanes are separated by a 2-mile-wide buffer zone.
So, how wide is the navigable portion?
Total width of deepwater lanes + buffer = 6 nautical miles (~11 km or 7 miles).