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Check user provided correct passphrase before initializing decryption.

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It would fail later anyway (due to wrong passphrase provided) but
it's better to stop sooner.
This commit is contained in:
Ondrej Kozina
2022-06-17 11:34:48 +02:00
parent b84132c140
commit f3a46b8e93
1 changed files with 23 additions and 3 deletions
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26
src/utils_reencrypt.c
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@@ -48,6 +48,24 @@ static void _set_reencryption_flags(uint32_t *flags)
*flags |= CRYPT_REENCRYPT_RESUME_ONLY;
}
static int reencrypt_check_passphrase(struct crypt_device *cd,
int keyslot,
const char *passphrase,
size_t passphrase_len)
{
int r;
assert(cd);
r = crypt_activate_by_passphrase(cd, NULL, keyslot,
passphrase, passphrase_len, 0);
check_signal(&r);
tools_passphrase_msg(r);
tools_keyslot_msg(r, UNLOCKED);
return r;
}
static int set_keyslot_params(struct crypt_device *cd, int keyslot)
{
const char *cipher;
@@ -238,19 +256,16 @@ static int reencrypt_luks2_load(struct crypt_device *cd, const char *data_device
if (r < 0)
goto out;
if (!ARG_SET(OPT_FORCE_OFFLINE_REENCRYPT_ID))
r = reencrypt_get_active_name(cd, data_device, &active_name);
if (r >= 0)
r = crypt_reencrypt_init_by_passphrase(cd, active_name, password,
passwordLen, ARG_INT32(OPT_KEY_SLOT_ID),
ARG_INT32(OPT_KEY_SLOT_ID), NULL, NULL, &params);
out:
free(hash);
crypt_safe_free(password);
free(active_name);
return r;
}
@@ -615,12 +630,17 @@ static int decrypt_luks2_init(struct crypt_device *cd, const char *data_device)
if (r < 0)
return r;
r = reencrypt_check_passphrase(cd, ARG_INT32(OPT_KEY_SLOT_ID), password, passwordLen);
if (r < 0)
goto out;
if (!ARG_SET(OPT_FORCE_OFFLINE_REENCRYPT_ID) && !ARG_SET(OPT_INIT_ONLY_ID))
r = reencrypt_get_active_name(cd, data_device, &active_name);
if (r >= 0)
r = crypt_reencrypt_init_by_passphrase(cd, active_name, password,
passwordLen, ARG_INT32(OPT_KEY_SLOT_ID), CRYPT_ANY_SLOT, NULL, NULL, &params);
out:
free(active_name);
crypt_safe_free(password);
return r;