#define CRYPT_LOOPAES "LOOPAES"
/** dm-verity mode */
#define CRYPT_VERITY "VERITY"
+/** TCRYPT (TrueCrypt-compatible) mode */
+#define CRYPT_TCRYPT "TCRYPT"
/**
* Get device type
uint32_t flags; /**< CRYPT_VERITY* flags */
};
+/**
+ *
+ * Structure used as parameter for TCRYPT device type
+ *
+ * @see crypt_format
+ *
+ */
+/** Include legacy modes ehn scannig for header*/
+#define CRYPT_TCRYPT_LEGACY_MODES (1 << 0)
+/** Try to load hidden header (describing hidden device) */
+#define CRYPT_TCRYPT_HIDDEN_HEADER (1 << 1)
+/** Try to load backup header */
+#define CRYPT_TCRYPT_BACKUP_HEADER (1 << 2)
+
+struct crypt_params_tcrypt {
+ const char *passphrase; /**< passphrase to unlock header (input only) */
+ size_t passphrase_size; /**< passphrase size (input only) */
+ const char **keyfiles; /**< keyfile paths to unlock header (input only) */
+ unsigned int keyfiles_count;/**< keyfiles count (input only) */
+ const char *hash_name; /**< hash function for PBKDF */
+ const char *cipher; /**< cipher chain c1[-c2[-c3]] */
+ const char *mode; /**< cipher block mode */
+ size_t key_size; /**< key size in bytes (the whole chain) */
+ uint32_t flags; /**< CRYPT_TCRYPT* flags */
+};
+
/** @} */
/**
size_t new_passphrase_size);
/**
- * Get number of keyslots supported for device type.
+ * Change defined key slot using provided passphrase
*
- * @param type crypt device type
+ * @pre @e cd contains initialized and formatted LUKS device context
*
- * @return slot count or negative errno otherwise if device
- * doesn't not support keyslots.
+ * @param cd crypt device handle
+ * @param keyslot_old old keyslot or @e CRYPT_ANY_SLOT
+ * @param keyslot_new new keyslot (can be the same as old)
+ * @param passphrase passphrase used to unlock volume key, @e NULL for query
+ * @param passphrase_size size of passphrase (binary data)
+ * @param new_passphrase passphrase for new keyslot, @e NULL for query
+ * @param new_passphrase_size size of @e new_passphrase (binary data)
+ *
+ * @return allocated key slot number or negative errno otherwise.
+ *
+ * @note This function is just internal implementation of luksChange
+ * command to avoid reading of volume key outside libcryptsetup boundary
+ * in FIPS mode.
*/
-int crypt_keyslot_max(const char *type);
+int crypt_keyslot_change_by_passphrase(struct crypt_device *cd,
+ int keyslot_old,
+ int keyslot_new,
+ const char *passphrase,
+ size_t passphrase_size,
+ const char *new_passphrase,
+ size_t new_passphrase_size);
/**
* Add key slot using provided key file path
* @note For VERITY the volume key means root hash required for activation.
* Because kernel dm-verity is always read only, you have to provide
* CRYPT_ACTIVATE_READONLY flag always.
+ * @note For TCRYPT the volume key should be always NULL and because master
+ * key from decrypted header is used instead.
*/
int crypt_activate_by_volume_key(struct crypt_device *cd,
const char *name,
* @param passphrase_size size of @e passphrase
*
* @return unlocked key slot number or negative errno otherwise.
+ *
+ * @note For TCRYPT cipher chain is the volume key concatenated
+ * for all ciphers in chain.
*/
int crypt_volume_key_get(struct crypt_device *cd,
int keyslot,
int crypt_dump(struct crypt_device *cd);
/**
+ * Informational benchmark for ciphers
+ *
+ * @param cd crypt device handle
+ * @param cipher (e.g. "aes")
+ * @param cipher_mode (e.g. "xts"), IV generator is ignored
+ * @param volume_key_size size of volume key in bytes
+ * @param iv_size size of IV in bytes
+ * @param buffer_size size of encryption buffer in bytes used in test
+ * @param encryption_mbs measured encryption speed in MiB/s
+ * @param decryption_mbs measured decryption speed in MiB/s
+ *
+ * @return @e 0 on success or negative errno value otherwise.
+ */
+int crypt_benchmark(struct crypt_device *cd,
+ const char *cipher,
+ const char *cipher_mode,
+ size_t volume_key_size,
+ size_t iv_size,
+ size_t buffer_size,
+ double *encryption_mbs,
+ double *decryption_mbs);
+
+int crypt_benchmark_kdf(struct crypt_device *cd,
+ const char *kdf,
+ const char *hash,
+ const char *password,
+ size_t password_size,
+ const char *salt,
+ size_t salt_size,
+ uint64_t *iterations_sec);
+
+/**
* Get cipher used in device
*
* @param cd crypt device handle
/** @} */
/**
+ * Get number of keyslots supported for device type.
+ *
+ * @param type crypt device type
+ *
+ * @return slot count or negative errno otherwise if device
+ * doesn't not support keyslots.
+ */
+int crypt_keyslot_max(const char *type);
+
+/**
+ * Get keyslot area pointers (relative to metadata device)
+ *
+ * @param cd crypt device handle
+ * @param keyslot keyslot number
+ * @param offset offset on metadata device (in bytes)
+ * @param length length of keyslot area (in bytes)
+ *
+ * @return @e 0 on success or negative errno value otherwise.
+ *
+ */
+int crypt_keyslot_area(struct crypt_device *cd,
+ int keyslot,
+ uint64_t *offset,
+ uint64_t *length);
+
+/**
* Backup header and keyslots to file
*
* @param cd crypt device handle
projects / platform / upstream / cryptsetup.git / blobdiff