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-rw-r--r--Documentation/security/keys/core.rst8
1 files changed, 6 insertions, 2 deletions
diff --git a/Documentation/security/keys/core.rst b/Documentation/security/keys/core.rst
index d9b0b859018b..9367d0fe4a02 100644
--- a/Documentation/security/keys/core.rst
+++ b/Documentation/security/keys/core.rst
@@ -920,10 +920,14 @@ The keyctl syscall functions are:
long keyctl(KEYCTL_PKEY_QUERY,
key_serial_t key_id, unsigned long reserved,
+ const char *params,
struct keyctl_pkey_query *info);
- Get information about an asymmetric key. The information is returned in
- the keyctl_pkey_query struct::
+ Get information about an asymmetric key. Specific algorithms and
+ encodings may be queried by using the ``params`` argument. This is a
+ string containing a space- or tab-separated string of key-value pairs.
+ Currently supported keys include ``enc`` and ``hash``. The information
+ is returned in the keyctl_pkey_query struct::
__u32 supported_ops;
__u32 key_size;