What is the block size for the RC2 cipher?

The RC2 cipher, which is a symmetric-key block cipher, utilizes a block size of 64 bits. This means that RC2 processes data in blocks of 64 bits at a time, making it suitable for various applications where data needs to be encrypted or decrypted in fixed-size chunks. The design of RC2 includes a variable key size that can range from 8 bits to 128 bits, but its fundamental operation relies on this 64-bit block size, allowing it to encrypt data securely while still maintaining a manageable complexity. Understanding this characteristic of RC2 helps in assessing its suitability for particular cryptographic tasks and its performance in comparison to other ciphers with different block sizes.