Would 128-bits RC4 algorithm suffice for encrypting the PAN?
The National Institute of Standards and Technology (NIST) is who to look to for guidance in the United States (http://www.nist.gov). Look at their Computer Security Resource Center and their Cryptographic Algorithm Object Registration page (http://csrc.nist.gov/groups/ST/crypt…lgorithms.html) for a list of approved cryptographic algorithms.