Of course they do. It's even in the title.
Socialist Constitution of the Democratic People's Republic of Korea (2016)
Article 1. The Democratic People’s Republic of Korea is an independent socialist State representing the interests of all the Korean people.
Article 12. The State shall adhere to the class line and strengthen the dictatorship of the people’s democracy so as to firmly defend the people’s power and socialist system against all subversive acts of hostile elements at home and abroad.
Article 14. The State shall determinedly conduct the Three-Revolution Red Flag Movement and other mass movements so as to accelerate the building of socialism to the maximum.
Article 19. The Democratic People’s Republic of Korea relies on socialist relations of production and on the foundation of an independent national economy.
Article 29. Socialism is built by the creative labour of the working people. Labour in the Democratic People’s Republic of Korea is independent and creative labour of the working people, freed from exploitation and oppression.
Article 32. The State shall firmly adhere to the principle of properly combining political guidance with economic and technical guidance, the unified guidance of the State with the creativeness of each unit, unitary direction with democracy, and political and moral incentive with material incentive in the guidance and management of the socialist economy.
Article 33. The State shall direct and manage the national economy through the Taean work system, a socialist form of economic management whereby the economy is operated and managed scientifically and rationally on the basis of the collective efforts of the producer masses, and through the system of agricultural guidance whereby agricultural management is conducted by industrial methods.
Article 39. Socialist culture, which is flourishing and developing in the Democratic People’s Republic of Korea, contributes to improving the creative ability of the working people and to meeting their sound cultural and aesthetic demands.
Article 40. The Democratic People’s Republic of Korea shall, by carrying out a thorough cultural revolution, train all the people to be builders of socialism equipped with a profound knowledge of nature and society and a high level of culture and technology, thus making the whole of society intellectual.
Article 41. The Democratic People’s Republic of Korea shall develop a truly people-oriented, revolutionary culture which serves the socialist working people. In building a socialist national culture, the State shall oppose the cultural infiltration of imperialism and any tendency to return to the past, protect its national cultural heritage, and develop it in keeping with the existing socialist situation.
Article 42. The State shall eliminate the way of life inherited from the outmoded society and establish a new socialist way of life in every sphere.
Article 43. The State shall embody the principles of socialist pedagogy so as to raise the rising generation to be steadfast revolutionaries who will fight for society and the people, to be people of the new, Juche type who are knowledgeable, morally sound and physically healthy.
Article 59. The mission of the armed forces of the Democratic People’s Republic of Korea is to defend the leadership of the revolution, to safeguard the interests of the working people, to defend the socialist system and the gains of the revolution, and to protect the freedom, independence and peace of the country from foreign aggression by implementing the Songun-based revolutionary line.
Article 63. In the Democratic People’s Republic of Korea the rights and duties of citizens are based on the collectivist principle: “One for all and all for one.”
Article 64. The State shall effectively guarantee the genuine democratic rights and freedoms as well as the material and cultural well-being of all its citizens. In the Democratic People’s Republic of Korea the rights and freedoms of citizens shall be amplified with the consolidation and development of the socialist system.
Article 80. The Democratic People’s Republic of Korea shall grant the right of asylum to foreign nationals persecuted for struggling for peace and democracy, national independence and socialism or for the freedom of scientific and cultural pursuits.