Keys of type PVSECRET-AES can also be verified via the pkey IOCTL
PKEY_VERIFYKEY2, but the card and domain fields must be zero, because such
a key does not use a crypto card. Also XTS keys of type PVSRCRET-AES are
not represented by 2 concatenated keys but by just one key of type
PVSECRET-AES. Thus, special handling is required for XTS keys.
Signed-off-by: Ingo Franzki <ifranzki@linux.ibm.com>
Reviewed-by: Jorg Schmidbauer <jschmidb@de.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
Keys of type PVSECRET-AES can not be reenciphered using 'zkey reencipher'
or 'zkey-cryptsetup reencipher'. Reject that with a proper error message.
Signed-off-by: Ingo Franzki <ifranzki@linux.ibm.com>
Reviewed-by: Jorg Schmidbauer <jschmidb@de.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
Ensure that all hyphens in command options and examples are escaped properly.
Signed-off-by: Ingo Franzki <ifranzki@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
To allow better control about the secure AES volume key re-enciphering
with 'zkey-cryptsetup reencipher', add options '--to-new' and '--from-old'
to specify if a re-enciphering from CURRENT to NEW, or OLD to CURRENT master
key registers is to be performed. If these options are not specified, then
it is auto-detected, based on the master key that the secure key is currently
re-enciphered with.
Signed-off-by: Ingo Franzki <ifranzki@linux.ibm.com>
Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
When re-enciphering or setting LUKS2 volume keys using zkey-cryptsetup,
allow to specify the --batch-mode|-q option to suppress confirmation
questions.
Signed-off-by: Ingo Franzki <ifranzki@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
LUKS2 encrypted volumes use Argon2i as default password based key
derivation function (PBKDF). Argon2i is a so-called memory-hard
function. It requires a certain amount of physical memory to make
dictionary attacks more costly.
Unfortunately, when multiple encrypted volumes are unlocked
automatically during system startup via /etc/crypttab, the use of
Argon2i will most likely cause an out-of-memory error in systemd.
To avoid the out-of-memory error, use PBKDF2 instead. Because PAES
uses secure keys as volume keys, the security of the key derivation
function used to derive the key to encrypt the volume key in the LUKS
key slots is of less relevance. Thus it is safe to use a weaker key
derivation function.
Signed-off-by: Ingo Franzki <ifranzki@linux.ibm.com>
Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Make the error message when the CCA library is missing more
user friendly. Also display an URL where the CCA package
can be downloaded.
The CCA library is used for the REENCIPHER commands of
zkey and zkey-cryptsetup and must be installed separately
as part of the IBM CCA Host Libraries and Tools package.
This packages is not provided by the distributors, but must
be downloaded from an IBM web page and installed separately.
Signed-off-by: Ingo Franzki <ifranzki@linux.ibm.com>
Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
