path: root/arch/s390/include/uapi/asm/pkey.h
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authorIngo Franzki <ifranzki@linux.ibm.com>2018-08-23 10:06:26 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2018-10-09 11:21:38 +0200
commita45a5c7d36a53646094c2ba4970777a20ec0ec42 (patch)
treee31f212b548141d0fd3b1240674b0417eb28d9cc /arch/s390/include/uapi/asm/pkey.h
parents390/zcrypt: add ap_adapter_mask sysfs attribute (diff)
s390/pkey: Introduce new API for random protected key generation
This patch introduces a new ioctl API and in-kernel API to generate a random protected key. The protected key is generated in a way that the effective clear key is never exposed in clear. Both APIs are described in detail in the header files arch/s390/include/asm/pkey.h and arch/s390/include/uapi/asm/pkey.h. Signed-off-by: Ingo Franzki <ifranzki@linux.ibm.com> Reviewed-by: Harald Freudenberger <freude@linux.ibm.com> Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/uapi/asm/pkey.h')
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/s390/include/uapi/asm/pkey.h b/arch/s390/include/uapi/asm/pkey.h
index 6f84a53c3270..10a7bc7c5fa9 100644
--- a/arch/s390/include/uapi/asm/pkey.h
+++ b/arch/s390/include/uapi/asm/pkey.h
@@ -129,4 +129,14 @@ struct pkey_verifykey {
#define PKEY_VERIFY_ATTR_AES 0x00000001 /* key is an AES key */
#define PKEY_VERIFY_ATTR_OLD_MKVP 0x00000100 /* key has old MKVP value */
+ * Generate (AES) random protected key.
+ */
+struct pkey_genprotk {
+ __u32 keytype; /* in: key type to generate */
+ struct pkey_protkey protkey; /* out: the protected key */
+#define PKEY_GENPROTK _IOWR(PKEY_IOCTL_MAGIC, 0x08, struct pkey_genprotk)
#endif /* _UAPI_PKEY_H */