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authorPeter Grehan <grehan@FreeBSD.org>2021-02-03 09:05:09 +0000
committerPeter Grehan <grehan@FreeBSD.org>2021-02-08 23:36:13 +0000
commit82874dcb3610b1e57fb6b1b9db96ac4996bfa620 (patch)
treef84b208b2216e64dfb937116cc21cc2c678f6d35
parent8cb8d8d998792e9c89516904f4951a060a9f2a49 (diff)
downloadsrc-82874dcb3610b1e57fb6b1b9db96ac4996bfa620.tar.gz
src-82874dcb3610b1e57fb6b1b9db96ac4996bfa620.zip
Always clamp curve25519 keys prior to use.
Approved by: re (gjb) (cherry picked from commit 6136a10e355a7a837edecbccbed04c34b4bc32c9)
-rw-r--r--sys/dev/if_wg/module/curve25519.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/dev/if_wg/module/curve25519.c b/sys/dev/if_wg/module/curve25519.c
index e21d00bd2818..16f0b0337eb6 100644
--- a/sys/dev/if_wg/module/curve25519.c
+++ b/sys/dev/if_wg/module/curve25519.c
@@ -767,6 +767,7 @@ void curve25519_generic(u8 out[CURVE25519_KEY_SIZE],
u8 e[32];
memcpy(e, scalar, 32);
+ curve25519_clamp_secret(e);
/* The following implementation was transcribed to Coq and proven to
* correspond to unary scalar multiplication in affine coordinates given