აბსტრაქტი. Ensuring high-quality randomness is a cornerstone of cryptographic security, as it underpins key generation, encryption protocols, and authentication mechanisms. Deterministic Random Bit Generators (DRBGs) play a critical role in providing pseudo-random outputs based on cryptographic techniques. This study explores various DRBGs, including Hash-DRBG, HMAC-DRBG, KHF-DRBG, AES-CTR DRBG, and TDEA-CTR DRBG, assessing their effectiveness within post-quantum cryptography (PQC). While Hash-DRBG and KHF-DRBG offer a balance of computational efficiency and security, HMAC-DRBG and AES-CTR DRBG demonstrate superior resistance to state compromise attacks. The adaptability of DRBGs to PQC depends on factors such as computational overhead, entropy sourcing, and resilience against emerging quantum threats. As cryptographic standards evolve, selecting DRBGs that maintain security and flexibility will be pivotal in safeguarding digital communications against quantum adversaries.