Make BN_BLINDING internal

RSA is pretty bad. In my most optimistic moments I dream of a world that
stopped using it. That won't happen during my lifetime, unfortunately.
Blinding is one way of making it a little less leaky. Unfortunately this
side-channel leak mitigation leaked out of the library for no good reason.
Let's at least fix that aspect of it.

ok jsing

1 files changed, 1 insertions, 2 deletions

diff --git a/src/lib/libcrypto/rsa/rsa.h b/src/lib/libcrypto/rsa/rsa.h
index ff88240f04..4fcef3a97c 100644
--- a/src/lib/libcrypto/rsa/rsa.h
+++ b/src/lib/libcrypto/rsa/rsa.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: rsa.h,v 1.64 2023/05/05 12:30:40 tb Exp $ */
+/* $OpenBSD: rsa.h,v 1.65 2023/07/28 10:05:16 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -321,7 +321,6 @@ int RSA_verify_ASN1_OCTET_STRING(int type, const unsigned char *m,
 
 int RSA_blinding_on(RSA *rsa, BN_CTX *ctx);
 void RSA_blinding_off(RSA *rsa);
-BN_BLINDING *RSA_setup_blinding(RSA *rsa, BN_CTX *ctx);
 
 int RSA_padding_add_PKCS1_type_1(unsigned char *to, int tlen,
     const unsigned char *f, int fl);