Searched hist:"161 a438d730dade2ba2b1bf8785f0759aba4ca5f" (Results 1 – 2 of 2) sorted by relevance
| /openbmc/linux/drivers/firmware/efi/ |
| H A D | efi.c | diff 161a438d730dade2ba2b1bf8785f0759aba4ca5f Thu Oct 20 03:39:08 CDT 2022 Ard Biesheuvel <ardb@kernel.org> efi: random: reduce seed size to 32 bytes
We no longer need at least 64 bytes of random seed to permit the early
crng init to complete. The RNG is now based on Blake2s, so reduce the
EFI seed size to the Blake2s hash size, which is sufficient for our
purposes.
While at it, drop the READ_ONCE(), which was supposed to prevent size
from being evaluated after seed was unmapped. However, this cannot
actually happen, so READ_ONCE() is unnecessary here.
Cc: <stable@vger.kernel.org> # v4.14+
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Jason A. Donenfeld <Jason@zx2c4.com>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
|
| /openbmc/linux/include/linux/ |
| H A D | efi.h | diff 161a438d730dade2ba2b1bf8785f0759aba4ca5f Thu Oct 20 03:39:08 CDT 2022 Ard Biesheuvel <ardb@kernel.org> efi: random: reduce seed size to 32 bytes
We no longer need at least 64 bytes of random seed to permit the early
crng init to complete. The RNG is now based on Blake2s, so reduce the
EFI seed size to the Blake2s hash size, which is sufficient for our
purposes.
While at it, drop the READ_ONCE(), which was supposed to prevent size
from being evaluated after seed was unmapped. However, this cannot
actually happen, so READ_ONCE() is unnecessary here.
Cc: <stable@vger.kernel.org> # v4.14+
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Jason A. Donenfeld <Jason@zx2c4.com>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
|