Which term represents the total number of possible values of keys in a cryptographic algorithm?

The term that represents the total number of possible values of keys in a cryptographic algorithm is known as key space. In cryptography, the key space is a critical concept that determines the strength of an encryption method. It is calculated as ( 2^{n} ), where ( n ) is the number of bits in the key length. A larger key space means a greater number of potential keys, which enhances the security of the encryption by making it more resistant to brute-force attacks, where an attacker systematically tries every possible key until the correct one is found.

Key range refers to the specific set of values that can be selected from the total key space, but it doesn’t encompass the entire concept of possible keys. Key length indicates the size of the key in bits, which directly relates to the size of the key space, but does not represent the total number of possible keys itself. Key diversity is a term that often describes the variation of keys used across different instances or applications, but it doesn't specifically denote the total number of possible key values in an algorithm. Therefore, the term key space precisely captures the totality of potential key values available within a cryptographic algorithm.