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Unify low level LUKS2 keyslot unlock and verify code.

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Function is now unused, see later commit
This commit is contained in:
Ondrej Kozina
2019-11-28 15:22:38 +01:00
parent 7316c53b04
commit 3bef291184
1 changed files with 33 additions and 0 deletions
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33
lib/luks2/luks2_keyslot.c
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@@ -310,6 +310,39 @@ int LUKS2_keyslot_area(struct luks2_hdr *hdr,
return 0;
}
static int _open_and_verify(struct crypt_device *cd,
struct luks2_hdr *hdr,
const keyslot_handler *h,
int keyslot,
const char *password,
size_t password_len,
struct volume_key **vk)
{
int r, key_size = LUKS2_get_keyslot_stored_key_size(hdr, keyslot);
if (key_size < 0)
return -EINVAL;
*vk = crypt_alloc_volume_key(key_size, NULL);
if (!*vk)
return -ENOMEM;
r = h->open(cd, keyslot, password, password_len, (*vk)->key, (*vk)->keylength);
if (r < 0)
log_dbg(cd, "Keyslot %d (%s) open failed with %d.", keyslot, h->name, r);
else
r = LUKS2_digest_verify(cd, hdr, *vk, keyslot);
if (r < 0) {
crypt_free_volume_key(*vk);
*vk = NULL;
}
crypt_volume_key_set_id(*vk, r);
return r < 0 ? r : keyslot;
}
static int LUKS2_open_and_verify_by_digest(struct crypt_device *cd,
struct luks2_hdr *hdr,
int keyslot,