Formally describe the design principles and internal structures of recent stream cipher constructions.

Analyze the security assumptions and theoretical foundations of modern stream ciphers using mathematical models.

Apply advanced cryptanalytic techniques—such as algebraic attacks, cube attacks, correlation attacks, and distinguishing attacks—to recent cipher designs.

Evaluate the theoretical resistance of stream ciphers against known and emerging attack models.

Interpret cryptanalytic research papers and reproduce theoretical attack methodologies in a formal setting.

Critically assess the security of proposed stream ciphers and formulate potential vulnerabilities or improvements based on theoretical insights.