On Tue, 2013-09-10 at 17:44 -0400, Vivek Goyal wrote: > Currently digital signature verification code assumes that it can be > used only with 3 keyrings. IMA, EVM and MODULE keyring. Provide another > variant where one can pass in a pointer to keyring (struct key *), and > integrity code can try to find key in that keyring and verify signature. > > This will be useful at two places. > > - elf binary loader can use system keyring and call into integrity > subsystem for signature verification. > - In later patches I am extending keyctl() to allow signature of > a user buffer against specified keyring. That logic can make use > of this code too. > > Signed-off-by: Vivek Goyal <vgoyal at redhat.com> My original thought was to use the system keyring, in lieu of having the multiple keyrings. Unfortunately, the scope of a key's usage needs to be limited, which can not be done safely with a single keyring. Mimi
