j = json.loads(JSONDATA)
data = dict([(v['key'], v['hash'])for v in j['hashmap']])
{
'assessment': '6d3f4796275bb54c21a33b82f399cc6d',
'bulletinFamily': '601892ece72be3be2f57266ca2354792',
'cpe': 'a173072793578541ea04b7baa0323592',
'cvelist': 'ab861885dbe02d09a3a2208dd9731d62',
'cvss': '3c236091754d2db00c1c42f811b3ada4',
...
}