These docs suggest that it has been available (only) since Android 3.0 Honeycomb. By contrast, conversation on discussion boards suggests it was available in 2.3.4 Gingerbread. So, what is the answer ...
Does anyone posses an official or un-official information on which encryption standard is used in Honeycomb "encrypt tablet" option? Is there an information on any hacks or backdoors, placed for law ...