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-rw-r--r--lib/crypto/curve25519.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/lib/crypto/curve25519.c b/lib/crypto/curve25519.c
index 0106bebe6900..c03ccdb99434 100644
--- a/lib/crypto/curve25519.c
+++ b/lib/crypto/curve25519.c
@@ -13,6 +13,8 @@
#include <linux/module.h>
#include <linux/init.h>
+bool curve25519_selftest(void);
+
const u8 curve25519_null_point[CURVE25519_KEY_SIZE] __aligned(32) = { 0 };
const u8 curve25519_base_point[CURVE25519_KEY_SIZE] __aligned(32) = { 9 };
@@ -20,6 +22,21 @@ EXPORT_SYMBOL(curve25519_null_point);
EXPORT_SYMBOL(curve25519_base_point);
EXPORT_SYMBOL(curve25519_generic);
+static int __init mod_init(void)
+{
+ if (!IS_ENABLED(CONFIG_CRYPTO_MANAGER_DISABLE_TESTS) &&
+ WARN_ON(!curve25519_selftest()))
+ return -ENODEV;
+ return 0;
+}
+
+static void __exit mod_exit(void)
+{
+}
+
+module_init(mod_init);
+module_exit(mod_exit);
+
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Curve25519 scalar multiplication");
MODULE_AUTHOR("Jason A. Donenfeld <Jason@zx2c4.com>");