Which cipher uses 32 rounds in its encryption process?

Skipjack is the correct choice because this cipher is specifically designed to employ 32 rounds in its encryption process. It was developed by the National Security Agency (NSA) and was used in secure telecommunications under the Clipper chip program. The 32 rounds of processing contribute to Skipjack's strength by applying multiple transformations to the data, making it more resistant to attacks.

In contrast, the other ciphers mentioned have different specifications and numbers of rounds. For example, RC2 and RC6 do not adhere to a fixed number of 32 rounds in their standard implementations. RC2 typically uses a variable number of rounds depending on the key size, and RC6 operates with 20 rounds in its standard form. Chaskey is also not aligned with the 32-round structure, as it is a modern lightweight authenticated cipher that focuses on efficiency rather than a fixed number of rounds for encryption.