Security Analysis of Quantum Obfuscation

Quantum cryptography has developed some fundamental primitives such as quantum one-time pad and quantum IND (indistinguishability)-security. Compared with other terms in quantum cryptography, quantum obfuscation attracts less attention and is still in its infancy due to its difficulty in implementation and application. In this chapter, we provide a positive result of quantum obfuscation. To analyze the obfuscatability of quantum point functions, we introduce the strict definition of a quantum point function and discuss its variants of multiple points and multiple qubits. Furthermore, we discuss the application of quantum obfuscation in quantum zero-knowledge and quantum symmetric encryption.