.\" Copyright (c) (2012,2015,2017,2019,2020) Apple Inc. All rights reserved. .\" .\" corecrypto is licensed under Apple Inc.’s Internal Use License Agreement (which .\" is contained in the License.txt file distributed with corecrypto) and only to .\" people who accept that license. IMPORTANT: Any license rights granted to you by .\" Apple Inc. (if any) are limited to internal use within your organization only on .\" devices and computers you own or control, for the sole purpose of verifying the .\" security characteristics and correct functioning of the Apple Software. You may .\" not, directly or indirectly, redistribute the Apple Software or any portions thereof. .Dd February 2, 2012 .Dt hmacfiletool 1 .Os Darwin .Sh NAME .Nm hmacfiletool .Nd Calculates integrity HMACs and stores them in the binary .Sh DESCRIPTION Calculates the expected HMAC of the code segments of the supplied module, and replaces a placeholder value with the calculated HMAC. This HMAC is used by .Ar cc_fips_test during the POST integrity checks in .Ar launchd , the .Ar kernel , and the .Ar SEP .