lib: digital signature dependency fix

Randy Dunlap reported build break:

ERROR: "crypto_alloc_shash" [lib/digsig.ko] undefined!
ERROR: "crypto_shash_final" [lib/digsig.ko] undefined!
ERROR: "crypto_shash_update" [lib/digsig.ko] undefined!
ERROR: "crypto_destroy_tfm" [lib/digsig.ko] undefined!

Added CRYPTO dependency and selected SHA1 algorithm.

Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Signed-off-by: James Morris <jmorris@namei.org>

diff --git a/lib/Kconfig b/lib/Kconfig
index 854735d..dbaf19e 100644 (file)
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -304,7 +304,8 @@ config MPILIB_EXTRA
 
 config SIGNATURE
        tristate "In-kernel signature checker"
-       depends on KEYS
+       depends on KEYS && CRYPTO
+       select CRYPTO_SHA1
        select MPILIB
        help
          Digital signature verification. Currently only RSA is supported.