eessppeelllloo/cryptsetup
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Add backend support for new device-mapper kernel options.

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This patch adds support for using keyring for volume key
and support for new integrity fields for dm-crypt.

Also helpers for searching disk by id.

To be used later.
This commit is contained in:
Milan Broz
2017-09-24 12:00:05 +02:00
parent 894e7b9357
commit c56bdee177
14 changed files with 606 additions and 37 deletions
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34
lib/utils_crypt.c
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@@ -89,6 +89,40 @@ int crypt_parse_hash_integrity_mode(const char *s, char *integrity)
return 0;
}
int crypt_parse_integrity_mode(const char *s, char *integrity,
int *integrity_key_size)
{
int ks = 0, r = 0;
if (!s || !integrity)
return -EINVAL;
// FIXME: do not hardcode it here
/* AEAD modes */
if (!strcmp(s, "aead") ||
!strcmp(s, "poly1305") ||
!strcmp(s, "none")) {
strncpy(integrity, s, MAX_CIPHER_LEN);
ks = 0;
} else if (!strcmp(s, "hmac-sha256")) {
strncpy(integrity, "hmac(sha256)", MAX_CIPHER_LEN);
ks = 32;
} else if (!strcmp(s, "hmac-sha512")) {
ks = 64;
strncpy(integrity, "hmac(sha512)", MAX_CIPHER_LEN);
} else if (!strcmp(s, "cmac-aes")) {
ks = 16;
strncpy(integrity, "cmac(aes)", MAX_CIPHER_LEN);
} else
r = -EINVAL;
if (integrity_key_size)
*integrity_key_size = ks;
return r;
}
int crypt_parse_pbkdf(const char *s, const char **pbkdf)
{
const char *tmp = NULL;