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zkey: Reject re-enciphering of PVSECRET-AES keys

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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>
This commit is contained in:
Ingo Franzki
2024-02-19 11:26:41 +01:00
committed by Steffen Eiden
parent 5276d408fd
commit a8eb2bd4e7
5 changed files with 38 additions and 6 deletions
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zkey/zkey.1
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@@ -266,6 +266,10 @@ command to re-encipher an existing secure key with a new master key.
A secure key must be re-enciphered when the master key of the CCA or EP11
cryptographic adapter changes.
.PP
Keys of type \fBPVSECRET\-AES\fP can not be re-enciphered. These keys do not
use a cryptographic adapter, thus they do not need to be re-enciphered when the
master of a cryptographic adapter changes.
.PP
The CCA cryptographic adapter has three different registers to store
master keys:
.RS 2