Index: doc/tls.html
==================================================================
--- doc/tls.html
+++ doc/tls.html
@@ -456,10 +456,11 @@
 	(default) or as a binary value with <em>-bin</em> option. Using
 	<em>-chan</em> option, a stacked channel is created and data read
 	from the channel is used to calculate a message digest with the result
 	returned with the last read operation before EOF. Use <em>-key</em> to
 	specify the key and return a Hashed Message Authentication Code (HMAC).
+	To salt a password, append or prepend the salt text to the password.
 	Type can be any OpenSSL supported hash algorithm including: <b>md4</b>,
 	<b>md5</b>, <b>sha1</b>, <b>sha256</b>, <b>sha512</b>, <b>sha3-256</b>,
 	etc. See <b>tls::digests</b> command for a full list.</dd>
 
     <dt><a name="tls::digests"><strong>tls::digests</strong></a></dt>

Index: generic/tlsDigest.c
==================================================================
--- generic/tlsDigest.c
+++ generic/tlsDigest.c
@@ -1,5 +1,6 @@
+
 /*
  * Digest Command and Stacked Transform Channel
  *
  * Copyright (C) 2023 Brian O'Hagan
  *

Index: tests/ciphers.test
==================================================================
--- tests/ciphers.test
+++ tests/ciphers.test
@@ -224,11 +224,11 @@
 
 test Digest_HMAC-10.2 {file} -body {
 	tls::digest md5 -key "Example key" -file md_data.dat
     } -result {901DA6E6976A71650C77443C37FF9C7F}
 
-test Digest_HMAC-10.3 {channel} -constraint {knownBug} -body {
+test Digest_HMAC-10.3 {channel} -constraints {knownBug} -body {
 	read_chan md5 md_data.dat -key "Example key"
     } -result {901DA6E6976A71650C77443C37FF9C7F}
 
 test Digest_HMAC-10.4 {data bin} -body {
 	string toupper [binary encode hex [tls::digest md5 -bin -key "Example key" -data "Example string for message digest tests."]]