Method: ActiveSupport::SecurityUtils.secure_compare

Defined in:

lib/active_support/security_utils.rb

.secure_compare(a, b) ⇒ Object

Secure string comparison for strings of variable length.

While a timing attack would not be able to discern the content of a secret compared via secure_compare, it is possible to determine the secret length. This should be considered when using secure_compare to compare weak, short secrets to user input.

# File 'lib/active_support/security_utils.rb', line 33

def secure_compare(a, b)
  a.bytesize == b.bytesize && fixed_length_secure_compare(a, b)
end