rsa: check that pointer checksum isn't NULL before using it
The pointer checksum were used before checking that it
isn't NULL. We move the code that use it after the check.
Reported-by: Coverity (CID: 185835)
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/lib/rsa/rsa-verify.c b/lib/rsa/rsa-verify.c
index 9734f6d..287fcc4 100644
--- a/lib/rsa/rsa-verify.c
+++ b/lib/rsa/rsa-verify.c
@@ -295,7 +295,7 @@
#endif
struct checksum_algo *checksum = info->checksum;
struct padding_algo *padding = info->padding;
- int hash_len = checksum->checksum_len;
+ int hash_len;
if (!prop || !sig || !hash || !checksum)
return -EIO;
@@ -315,6 +315,7 @@
}
uint8_t buf[sig_len];
+ hash_len = checksum->checksum_len;
#if !defined(USE_HOSTCC)
ret = uclass_get_device(UCLASS_MOD_EXP, 0, &mod_exp_dev);