79 lines
3.8 KiB
Diff
79 lines
3.8 KiB
Diff
From 24eef4e6cc9bde4b96d72fbd5b438d774f1ce66a Mon Sep 17 00:00:00 2001
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From: Ingo Franzki <ifranzki@linux.ibm.com>
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Date: Tue, 5 Mar 2024 08:28:40 +0100
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Subject: [PATCH] integritysetup: Add support for hmac-sha512
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Currently the only supported integrity algorithm using HMAC is 'hmac-sha256'.
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Add 'hmac-sha512' to the list of supported algorithms as well.
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(cherry picked from commit 7bf1cfe3b20037f3732d8854833b00f6a3511d95)
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Resolves: RHEL-50213
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---
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man/integritytab.xml | 6 +++---
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src/integritysetup/integrity-util.c | 2 +-
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src/integritysetup/integrity-util.h | 1 +
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src/integritysetup/integritysetup.c | 2 ++
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4 files changed, 7 insertions(+), 4 deletions(-)
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diff --git a/man/integritytab.xml b/man/integritytab.xml
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index 44f0a55929..2c48d2960f 100644
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--- a/man/integritytab.xml
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+++ b/man/integritytab.xml
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@@ -55,8 +55,8 @@
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<para>The third field if present contains an absolute filename path to a key file or a <literal>-</literal>
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to specify none. When the filename is present, the "integrity-algorithm" defaults to <literal>hmac-sha256</literal>
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- with the key length derived from the number of bytes in the key file. At this time the only supported integrity algorithm
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- when using key file is hmac-sha256. The maximum size of the key file is 4096 bytes.
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+ with the key length derived from the number of bytes in the key file. At this time the only supported integrity algorithms
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+ when using key file are hmac-sha256 and hmac-sha512. The maximum size of the key file is 4096 bytes.
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</para>
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<para>The fourth field, if present, is a comma-delimited list of options or a <literal>-</literal> to specify none. The following options are
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@@ -101,7 +101,7 @@
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</varlistentry>
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<varlistentry>
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- <term><option>integrity-algorithm=[crc32c|crc32|sha1|sha256|hmac-sha256]</option></term>
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+ <term><option>integrity-algorithm=[crc32c|crc32|sha1|sha256|hmac-sha256|hmac-sha512]</option></term>
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<listitem><para>
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The algorithm used for integrity checking. The default is crc32c. Must match option used during format.
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diff --git a/src/integritysetup/integrity-util.c b/src/integritysetup/integrity-util.c
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index 410133b377..934e97fa5e 100644
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--- a/src/integritysetup/integrity-util.c
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+++ b/src/integritysetup/integrity-util.c
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@@ -7,7 +7,7 @@
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#include "percent-util.h"
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static int supported_integrity_algorithm(char *user_supplied) {
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- if (!STR_IN_SET(user_supplied, "crc32", "crc32c", "sha1", "sha256", "hmac-sha256"))
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+ if (!STR_IN_SET(user_supplied, "crc32", "crc32c", "sha1", "sha256", "hmac-sha256", "hmac-sha512"))
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return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unsupported integrity algorithm (%s)", user_supplied);
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return 0;
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}
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diff --git a/src/integritysetup/integrity-util.h b/src/integritysetup/integrity-util.h
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index 359d2556a4..f701b59273 100644
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--- a/src/integritysetup/integrity-util.h
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+++ b/src/integritysetup/integrity-util.h
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@@ -15,4 +15,5 @@ int parse_integrity_options(
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char **ret_integrity_alg);
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#define DM_HMAC_256 "hmac(sha256)"
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+#define DM_HMAC_512 "hmac(sha512)"
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#define DM_MAX_KEY_SIZE 4096 /* Maximum size of key allowed for dm-integrity */
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diff --git a/src/integritysetup/integritysetup.c b/src/integritysetup/integritysetup.c
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index a602886cb3..674131ed54 100644
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--- a/src/integritysetup/integritysetup.c
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+++ b/src/integritysetup/integritysetup.c
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@@ -80,6 +80,8 @@ static const char *integrity_algorithm_select(const void *key_file_buf) {
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if (arg_integrity_algorithm) {
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if (streq("hmac-sha256", arg_integrity_algorithm))
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return DM_HMAC_256;
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+ if (streq("hmac-sha512", arg_integrity_algorithm))
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+ return DM_HMAC_512;
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return arg_integrity_algorithm;
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} else if (key_file_buf)
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return DM_HMAC_256;
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