Messages in this thread Patch in this message | | | From | Masami Hiramatsu <> | Subject | [PATCH 2/3] random: rng-seed source is utf-8 | Date | Fri, 14 Feb 2020 15:10:27 +0900 |
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From: Mark Salyzyn <salyzyn@android.com>
commit 428826f5358c922dc378830a1717b682c0823160 ("fdt: add support for rng-seed") makes the assumption that the data in rng-seed is binary, when it is typically constructed of utf-8 characters which has a bitness of roughly 6 to give appropriate credit due for the entropy.
Fixes: 428826f5358c ("fdt: add support for rng-seed") Signed-off-by: Mark Salyzyn <salyzyn@android.com> Cc: linux-kernel@vger.kernel.org Cc: kernel-team@android.com Cc: Kees Cook <keescook@chromium.org> Cc: Theodore Y. Ts'o <tytso@mit.edu> --- drivers/char/random.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/char/random.c b/drivers/char/random.c index c7f9584de2c8..ee21a6a584b1 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -2306,7 +2306,7 @@ EXPORT_SYMBOL_GPL(add_hwgenerator_randomness); void add_bootloader_randomness(const void *buf, unsigned int size) { if (IS_ENABLED(CONFIG_RANDOM_TRUST_BOOTLOADER)) - add_hwgenerator_randomness(buf, size, size * 8); + add_hwgenerator_randomness(buf, size, size * 6); else add_device_randomness(buf, size); }
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