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libdevmapper: Support dm-crypt integrity_key_size option

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This patch implement support for setting specific integrity key size
option in dm-crypt, available since dm-crypt version 1.28.0.

This can be used for setting non-standard HMAC key length.

Mostly based on code from Ingo Franzki <ifranzki@linux.ibm.com>
This commit is contained in:
Milan Broz
2024-11-25 10:47:45 +01:00
parent 1bea029cef
commit ff3e2c6a43
12 changed files with 39 additions and 35 deletions
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4
lib/luks2/luks2_json_metadata.c
View File

@@ -2519,7 +2519,7 @@ int LUKS2_assembly_multisegment_dmd(struct crypt_device *cd,
crypt_data_device(cd), vk,
json_segment_get_cipher(jobj),
json_segment_get_iv_offset(jobj),
segment_offset, "none", 0,
segment_offset, "none", 0, 0,
json_segment_get_sector_size(jobj));
if (r) {
log_err(cd, _("Failed to set dm-crypt segment."));
@@ -2715,7 +2715,7 @@ int LUKS2_activate(struct crypt_device *cd,
crypt_key, crypt_get_cipher_spec(cd),
crypt_get_iv_offset(cd), crypt_get_data_offset(cd),
crypt_get_integrity(cd) ?: "none",
crypt_get_integrity_tag_size(cd),
crypt_get_integrity_tag_size(cd), 0, /* FIXME */
crypt_get_sector_size(cd));
} else
r = dm_linear_target_set(&dmd.segment, 0,

3
lib/luks2/luks2_reencrypt.c
View File

@@ -2114,8 +2114,7 @@ static int reencrypt_make_targets(struct crypt_device *cd,
json_segment_get_cipher(jobj),
json_segment_get_iv_offset(jobj),
segment_offset,
"none",
0,
"none", 0, 0,
json_segment_get_sector_size(jobj));
if (r) {
log_err(cd, _("Failed to set dm-crypt segment."));