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Date:      Thu, 25 Jun 2020 20:18:56 +0000 (UTC)
From:      John Baldwin <jhb@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   svn commit: r362625 - head/sys/opencrypto
Message-ID:  <202006252018.05PKIuwH002706@repo.freebsd.org>

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Author: jhb
Date: Thu Jun 25 20:18:55 2020
New Revision: 362625
URL: https://svnweb.freebsd.org/changeset/base/362625

Log:
  Zero the temporary HMAC key in hmac_init_pad().
  
  Reviewed by:	delphij
  Sponsored by:	Chelsio Communications
  Differential Revision:	https://reviews.freebsd.org/D25436

Modified:
  head/sys/opencrypto/crypto.c

Modified: head/sys/opencrypto/crypto.c
==============================================================================
--- head/sys/opencrypto/crypto.c	Thu Jun 25 20:17:34 2020	(r362624)
+++ head/sys/opencrypto/crypto.c	Thu Jun 25 20:18:55 2020	(r362625)
@@ -444,6 +444,7 @@ hmac_init_pad(struct auth_hash *axf, const char *key, 
 
 	axf->Init(auth_ctx);
 	axf->Update(auth_ctx, hmac_key, axf->blocksize);
+	explicit_bzero(hmac_key, sizeof(hmac_key));
 }
 
 void



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