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Provide more specific examples of keyring restrictions as applied to
X.509 signature chain verification.
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
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This creates a new section in the security development index for kernel
keys, and adjusts for ReST markup.
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Add a restrict_link_by_key_or_keyring_chain link restriction that
searches for signing keys in the destination keyring in addition to the
signing key or keyring designated when the destination keyring was
created. Userspace enables this behavior by including the "chain" option
in the keyring restriction:
keyctl(KEYCTL_RESTRICT_KEYRING, keyring, "asymmetric",
"key_or_keyring:<signing key>:chain");
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
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Adds restrict_link_by_signature_keyring(), which uses the restrict_key
member of the provided destination_keyring data structure as the
key or keyring to search for signing keys.
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
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Look up asymmetric keyring restriction information using the key-type
lookup_restrict hook.
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
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Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Merge the type-specific data with the payload data into one four-word chunk
as it seems pointless to keep them separate.
Use user_key_payload() for accessing the payloads of overloaded
user-defined keys.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: linux-cifs@vger.kernel.org
cc: ecryptfs@vger.kernel.org
cc: linux-ext4@vger.kernel.org
cc: linux-f2fs-devel@lists.sourceforge.net
cc: linux-nfs@vger.kernel.org
cc: ceph-devel@vger.kernel.org
cc: linux-ima-devel@lists.sourceforge.net
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In-source documentation for the asymmetric key type. This will be located in:
Documentation/crypto/asymmetric-keys.txt
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Mat Martineau
Kees Cook
Andrea Gelmini
David Howells