Change-Id: I408d88d984f9026539c2d1bc2a9608243802c152
* Implements RFC 4226 (HOTP) and RFC 6238 (TOTP) * Adds sha1.c to apps/plugins/lib (orignally tools/hmac-sha1.c) * See manual entry for more information Change-Id: Ia4a4031b29f97361b541e71438aa7f3ea82212f2