diff options
Diffstat (limited to 'man/cryptsetup-open.8.adoc')
-rw-r--r-- | man/cryptsetup-open.8.adoc | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/man/cryptsetup-open.8.adoc b/man/cryptsetup-open.8.adoc new file mode 100644 index 0000000..5e8e7a6 --- /dev/null +++ b/man/cryptsetup-open.8.adoc @@ -0,0 +1,165 @@ += cryptsetup-open(8) +:doctype: manpage +:manmanual: Maintenance Commands +:mansource: cryptsetup {release-version} +:man-linkstyle: pass:[blue R < >] +:COMMON_OPTIONS: +:ACTION_OPEN: + +== Name + +cryptsetup-open, cryptsetup-create, cryptsetup-plainOpen, cryptsetup-luksOpen, cryptsetup-loopaesOpen, cryptsetup-tcryptOpen, cryptsetup-bitlkOpen, cryptsetup-fvault2Open - open an encrypted device and create a mapping with a specified name + +== SYNOPSIS + +*cryptsetup _open_ --type <device_type> [<options>] <device> <name>* + +== DESCRIPTION +Opens (creates a mapping with) <name> backed by device <device>. + +Device type can be _plain_, _luks_ (default), _luks1_, _luks2_, +_loopaes_ or _tcrypt_. + +For backward compatibility there are *open* command aliases: + +*create* (argument-order <name> <device>): open --type plain + +*plainOpen*: open --type plain + +*luksOpen*: open --type luks + +*loopaesOpen*: open --type loopaes + +*tcryptOpen*: open --type tcrypt + +*bitlkOpen*: open --type bitlk + +*<options>* are type specific and are described below for individual +device types. For *create*, the order of the <name> and <device> options +is inverted for historical reasons, all other aliases use the standard +*<device> <name>* order. + +=== PLAIN +*open --type plain <device> <name>* + +plainOpen <device> <name> (*old syntax*) + +create <name> <device> (*OBSOLETE syntax*) + +Opens (creates a mapping with) <name> backed by device <device>. + +*<options>* can be [--hash, --cipher, --verify-passphrase, --sector-size, +--key-file, --keyfile-size, --keyfile-offset, --key-size, --offset, +--skip, --device-size, --size, --readonly, --shared, --allow-discards, +--refresh, --timeout, --verify-passphrase, --iv-large-sectors]. + +Example: 'cryptsetup open --type plain /dev/sda10 e1' maps the raw +encrypted device /dev/sda10 to the mapped (decrypted) device +/dev/mapper/e1, which can then be mounted, fsck-ed or have a filesystem +created on it. + +=== LUKS +*open <device> <name>* + +open --type <luks1|luks2> <device> <name> (*explicit version request*) + +luksOpen <device> <name> (*old syntax*) + +Opens the LUKS device <device> and sets up a mapping <name> after +successful verification of the supplied passphrase. + +First, the passphrase is searched in LUKS2 tokens unprotected by PIN. +If such token does not exist (or fails to unlock keyslot) and +also the passphrase is not supplied via --key-file, the command +prompts for passphrase interactively. + +If there is valid LUKS2 token but it requires PIN to unlock assigned keyslot, +it is not used unless one of following options is added: --token-only, +--token-type where type matches desired PIN protected token or --token-id with id +matching PIN protected token. + +*<options>* can be [--key-file, --keyfile-offset, --keyfile-size, +--readonly, --test-passphrase, --allow-discards, --header, --key-slot, +--volume-key-file, --token-id, --token-only, --token-type, +--disable-external-tokens, --disable-keyring, --disable-locks, --type, +--refresh, --serialize-memory-hard-pbkdf, --unbound, --tries, --timeout, +--verify-passphrase, --persistent]. + +=== loopAES +*open --type loopaes <device> <name> --key-file <keyfile>* + +loopaesOpen <device> <name> --key-file <keyfile> (*old syntax*) + +Opens the loop-AES <device> and sets up a mapping <name>. + +If the key file is encrypted with GnuPG, then you have to use +--key-file=- and decrypt it before use, e.g., like this: + +gpg --decrypt <keyfile> | cryptsetup loopaesOpen --key-file=- <device> +<name> + +*WARNING:* The loop-AES extension cannot use the direct input of the key +file on the real terminal because the keys are separated by end-of-line and +only part of the multi-key file would be read. + +If you need it in script, just use the pipe redirection: + +echo $keyfile | cryptsetup loopaesOpen --key-file=- <device> <name> + +Use *--keyfile-size* to specify the proper key length if needed. + +Use *--offset* to specify device offset. Note that the units need to be +specified in number of 512 byte sectors. + +Use *--skip* to specify the IV offset. If the original device used an +offset and but did not use it in IV sector calculations, you have to +explicitly use *--skip 0* in addition to the offset parameter. + +Use *--hash* to override the default hash function for passphrase +hashing (otherwise it is detected according to key size). + +*<options>* can be [--cipher, --key-file, --keyfile-size, --keyfile-offset, +--key-size, --offset, --skip, --hash, --readonly, --allow-discards, --refresh]. + +=== TrueCrypt and VeraCrypt +*open --type tcrypt <device> <name>* + +tcryptOpen <device> <name> (*old syntax*) + +Opens the TCRYPT (TrueCrypt and VeraCrypt compatible) <device> and sets +up a mapping <name>. + +*<options>* can be [--key-file, --tcrypt-hidden, --tcrypt-system, +--tcrypt-backup, --readonly, --test-passphrase, --allow-discards, +--veracrypt (ignored), --disable-veracrypt, --veracrypt-pim, +--veracrypt-query-pim, --header, +--cipher, --hash, --tries, --timeout, --verify-passphrase]. + +The keyfile parameter allows a combination of file content with the +passphrase and can be repeated. Note that using keyfiles is compatible +with TCRYPT and is different from LUKS keyfile logic. + +If *--cipher* or *--hash* options are used, only cipher chains or PBKDF2 +variants with the specified hash algorithms are checked. This could +speed up unlocking the device (but also it reveals some information +about the container). + +If you use *--header* in combination with hidden or system options, the +header file must contain specific headers on the same positions as the +original encrypted container. + +*WARNING:* Option *--allow-discards* cannot be combined with option +*--tcrypt-hidden*. For normal mapping, it can cause the *destruction of +hidden volume* (hidden volume appears as unused space for outer volume +so this space can be discarded). + +=== BitLocker +*open --type bitlk <device> <name>* + +bitlkOpen <device> <name> (*old syntax*) + +Opens the BITLK (a BitLocker compatible) <device> and sets up a mapping +<name>. + +*<options>* can be [--key-file, --keyfile-offset, --keyfile-size, --key-size, +--readonly, --test-passphrase, --allow-discards --volume-key-file, --tries, +--timeout, --verify-passphrase]. + +=== FileVault2 +*open --type fvault2 <device> <name>* + +fvault2Open <device> <name> (*old syntax*) + +Opens the FVAULT2 (a FileVault2 compatible) <device> and sets up a mapping +<name>. + +*<options>* can be [--key-file, --keyfile-offset, --keyfile-size, --key-size, +--readonly, --test-passphrase, --allow-discards --volume-key-file, --tries, +--timeout, --verify-passphrase]. + +include::man/common_options.adoc[] +include::man/common_footer.adoc[] |