How many rounds does Camellia use if configured for maximum security?

Camellia is a symmetric key block cipher that can be configured to use different numbers of rounds depending on the desired level of security. When configured for maximum security, Camellia utilizes 24 rounds. This setting helps ensure a high level of encryption strength, making it resistant to various forms of cryptographic attack.

The encryption process involves multiple rounds, each introducing complex transformations and mixing of the input data. The increased number of rounds in the maximum security configuration enhances the diffusion and confusion principles that are fundamental to secure cryptographic algorithms. This is critical in protecting against potential vulnerabilities and ensuring the securely encrypted data remains secure against unauthorized access.

In contrast, fewer rounds, such as 12 or 18, may be sufficient for standard use-cases where performance is prioritized over maximum security, but they do not provide the same level of resilience against cryptanalysis as the maximum security arrangement with 24 rounds.