Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.
Two bytes returned by an integrated circuit card after processing any command that signify the success of or errors encountered during said processing.
Source(s):
NIST SP 800-73-4