• Tycho Andersen's avatar
    big key: get rid of stack array allocation · a964f395
    Tycho Andersen authored
    We're interested in getting rid of all of the stack allocated arrays in the
    kernel [1]. This patch simply hardcodes the iv length to match that of the
    hardcoded cipher.
    
    [1]: https://lkml.org/lkml/2018/3/7/621
    
    v2: hardcode the length of the nonce to be the GCM AES IV length, and do a
        sanity check in init(), Eric Biggers
    v3: * remember to free big_key_aead when sanity check fails
        * define a constant for big key IV size so it can be changed along side
          the algorithm in the code
    Signed-off-by: default avatarTycho Andersen <tycho@tycho.ws>
    Reviewed-by: default avatarKees Cook <keescook@chromium.org>
    CC: David Howells <dhowells@redhat.com>
    CC: James Morris <jmorris@namei.org>
    CC: "Serge E. Hallyn" <serge@hallyn.com>
    CC: Jason A. Donenfeld <Jason@zx2c4.com>
    CC: Eric Biggers <ebiggers3@gmail.com>
    Signed-off-by: default avatarJames Morris <james.morris@microsoft.com>
    a964f395
big_key.c 10.3 KB