The two leaders are due to meet in Singapore on 12 June
North Korea has said it may pull out of a summit with US President Donald Trump if the US unilaterally insists it gives up nuclear weapons.
The highly anticipated meeting between Mr Trump and North Korea's Kim Jong-un is due to take place on 12 June.
But in an angry statement, North Korea's vice-foreign minister accused the US of making reckless statements and of harbouring sinister intentions.
His statement pointed the finger at US National Security Adviser John Bolton.
Mr Bolton has suggested that North Korea could follow a Libyan model of nuclear disarmament, a model many analysts say will have alarmed the North considering the fate of the Libyan leadership.
Kim Kye-gwan said in his statement that this was "not an expression of intention to address the issue through dialogue".
"It is essentially a manifestation of awfully sinister move to impose on our dignified state the destiny of Libya or Iraq which had been collapsed due to yielding the whole of their countries to big powers."
"We shed light on the quality of Bolton already in the past, and we do not hide our feeling of repugnance towards him," he added.
This represents a significant statement from an influential figure in the North Korean hierarchy.
The groundbreaking agreement to meet in the first place came about after North Korea said it was committed to denuclearising the Korean peninsula.
Exactly what that would entail has remained unclear, but North Korea has invited foreign media to witness the dismantling of its main nuclear test site later this month.
More at http://www.bbc.com/news/world-asia-44134910