From: Loup Vaillant <loup@loup-vaillant.fr>
Date: Sat, 6 Jan 2018 12:46:05 +0000 (+0100)
Subject: removed useless check
X-Git-Url: https://git.codecow.com/?a=commitdiff_plain;h=85ee8a0bb13f35c26cb5b710dd4796d981c9cae8;p=Monocypher.git

removed useless check

If the public key is not in the curve, the verification will simply
fail.  There is little point verifying the validity of a signing public
key, since you have to trust its origin in the first place.
---

diff --git a/src/monocypher.c b/src/monocypher.c
index b4828f1..334b0cd 100644
--- a/src/monocypher.c
+++ b/src/monocypher.c
@@ -1602,12 +1602,6 @@ void crypto_sign(u8        signature[64],
     crypto_sign_final           (&ctx, signature);
 }
 
-int crypto_check_public_key(const u8 public_key[32])
-{
-    ge A; // wasted result.
-    return ge_frombytes_neg(&A, public_key);
-}
-
 void crypto_check_init(crypto_check_ctx *ctx,
                       const u8 signature[64],
                       const u8 public_key[32])
diff --git a/src/monocypher.h b/src/monocypher.h
index 4014b50..9e2b035 100644
--- a/src/monocypher.h
+++ b/src/monocypher.h
@@ -180,8 +180,6 @@ void crypto_sign(uint8_t        signature [64],
                  const uint8_t  public_key[32], // optional, may be 0
                  const uint8_t *message, size_t message_size);
 
-int crypto_check_public_key(const uint8_t public_key[32]);
-
 // EdDSA check context.  Do not rely on its contents or its size, they
 // may change without notice.
 typedef struct {