diff options
Diffstat (limited to 'crypto/block-luks.c')
| -rw-r--r-- | crypto/block-luks.c | 44 |
1 files changed, 21 insertions, 23 deletions
diff --git a/crypto/block-luks.c b/crypto/block-luks.c index 25f8a9f1c4..9e59a791a6 100644 --- a/crypto/block-luks.c +++ b/crypto/block-luks.c @@ -419,7 +419,6 @@ qcrypto_block_luks_load_key(QCryptoBlock *block, QCryptoCipherAlgorithm ivcipheralg, QCryptoHashAlgorithm ivhash, uint8_t *masterkey, - size_t masterkeylen, QCryptoBlockReadFunc readfunc, void *opaque, Error **errp) @@ -438,9 +437,9 @@ qcrypto_block_luks_load_key(QCryptoBlock *block, return 0; } - splitkeylen = masterkeylen * slot->stripes; + splitkeylen = luks->header.master_key_len * slot->stripes; splitkey = g_new0(uint8_t, splitkeylen); - possiblekey = g_new0(uint8_t, masterkeylen); + possiblekey = g_new0(uint8_t, luks->header.master_key_len); /* * The user password is used to generate a (possible) @@ -453,7 +452,7 @@ qcrypto_block_luks_load_key(QCryptoBlock *block, (const uint8_t *)password, strlen(password), slot->salt, QCRYPTO_BLOCK_LUKS_SALT_LEN, slot->iterations, - possiblekey, masterkeylen, + possiblekey, luks->header.master_key_len, errp) < 0) { return -1; } @@ -478,7 +477,7 @@ qcrypto_block_luks_load_key(QCryptoBlock *block, /* Setup the cipher/ivgen that we'll use to try to decrypt * the split master key material */ cipher = qcrypto_cipher_new(cipheralg, ciphermode, - possiblekey, masterkeylen, + possiblekey, luks->header.master_key_len, errp); if (!cipher) { return -1; @@ -489,7 +488,7 @@ qcrypto_block_luks_load_key(QCryptoBlock *block, ivgen = qcrypto_ivgen_new(ivalg, ivcipheralg, ivhash, - possiblekey, masterkeylen, + possiblekey, luks->header.master_key_len, errp); if (!ivgen) { return -1; @@ -519,7 +518,7 @@ qcrypto_block_luks_load_key(QCryptoBlock *block, * it back together to get the actual master key. */ if (qcrypto_afsplit_decode(hash, - masterkeylen, + luks->header.master_key_len, slot->stripes, splitkey, masterkey, @@ -537,11 +536,13 @@ qcrypto_block_luks_load_key(QCryptoBlock *block, * header */ if (qcrypto_pbkdf2(hash, - masterkey, masterkeylen, + masterkey, + luks->header.master_key_len, luks->header.master_key_salt, QCRYPTO_BLOCK_LUKS_SALT_LEN, luks->header.master_key_iterations, - keydigest, G_N_ELEMENTS(keydigest), + keydigest, + G_N_ELEMENTS(keydigest), errp) < 0) { return -1; } @@ -574,8 +575,7 @@ qcrypto_block_luks_find_key(QCryptoBlock *block, QCryptoIVGenAlgorithm ivalg, QCryptoCipherAlgorithm ivcipheralg, QCryptoHashAlgorithm ivhash, - uint8_t **masterkey, - size_t *masterkeylen, + uint8_t *masterkey, QCryptoBlockReadFunc readfunc, void *opaque, Error **errp) @@ -584,9 +584,6 @@ qcrypto_block_luks_find_key(QCryptoBlock *block, size_t i; int rv; - *masterkey = g_new0(uint8_t, luks->header.master_key_len); - *masterkeylen = luks->header.master_key_len; - for (i = 0; i < QCRYPTO_BLOCK_LUKS_NUM_KEY_SLOTS; i++) { rv = qcrypto_block_luks_load_key(block, &luks->header.key_slots[i], @@ -597,8 +594,7 @@ qcrypto_block_luks_find_key(QCryptoBlock *block, ivalg, ivcipheralg, ivhash, - *masterkey, - *masterkeylen, + masterkey, readfunc, opaque, errp); @@ -613,9 +609,6 @@ qcrypto_block_luks_find_key(QCryptoBlock *block, error_setg(errp, "Invalid password, cannot unlock any keyslot"); error: - g_free(*masterkey); - *masterkey = NULL; - *masterkeylen = 0; return -1; } @@ -636,7 +629,6 @@ qcrypto_block_luks_open(QCryptoBlock *block, size_t i; ssize_t rv; g_autofree uint8_t *masterkey = NULL; - size_t masterkeylen; char *ivgen_name, *ivhash_name; QCryptoCipherMode ciphermode; QCryptoCipherAlgorithm cipheralg; @@ -802,6 +794,9 @@ qcrypto_block_luks_open(QCryptoBlock *block, /* Try to find which key slot our password is valid for * and unlock the master key from that slot. */ + + masterkey = g_new0(uint8_t, luks->header.master_key_len); + if (qcrypto_block_luks_find_key(block, password, cipheralg, ciphermode, @@ -809,7 +804,7 @@ qcrypto_block_luks_open(QCryptoBlock *block, ivalg, ivcipheralg, ivhash, - &masterkey, &masterkeylen, + masterkey, readfunc, opaque, errp) < 0) { ret = -EACCES; @@ -825,7 +820,8 @@ qcrypto_block_luks_open(QCryptoBlock *block, block->ivgen = qcrypto_ivgen_new(ivalg, ivcipheralg, ivhash, - masterkey, masterkeylen, + masterkey, + luks->header.master_key_len, errp); if (!block->ivgen) { ret = -ENOTSUP; @@ -833,7 +829,9 @@ qcrypto_block_luks_open(QCryptoBlock *block, } ret = qcrypto_block_init_cipher(block, cipheralg, ciphermode, - masterkey, masterkeylen, n_threads, + masterkey, + luks->header.master_key_len, + n_threads, errp); if (ret < 0) { ret = -ENOTSUP; |