A website developer is working on a new e-commerce website and has asked an information security expert for the most appropriate way to store credit card numbers to create an easy reordering process.
Which of the following methods would BEST accomplish this goal?
A . Salting the magnetic strip information
B . Encrypting the credit card information in transit.
C . Hashing the credit card numbers upon entry.
D . Tokenizing the credit cards in the database
Answer: C