Assume that you are using a cryptographic hash algorithm to create password hashes. The hash algorithm produces output or signatures that are $2^{256}$ bits in length. Assume that a user creates a password using $6$ characters that include upper and lower case alphabetic characters, numbers, and special characters such as $!$@#$\%$ etc. If an attacker only knows that the password is six characters what is the smallest number of attempts it would take before a brute force attack is guaranteed to crack the password?

$2^{128}$

$2^{256}$

$2^{256}+1$

$2^6$

${52}^6$

${95}^6$

$6^{95}$

$95!$

None of the above