Modify sigalgs extension processing for TLS 1.3.

- Make a separate sigalgs list for TLS 1.3 including only modern
  algorithm choices which we use when the handshake will not negotiate
  TLS 1.2
- Modify the legacy sigalgs for TLS 1.2 to include the RSA PSS algorithms as
  mandated by RFC8446 when the handshake will permit negotiation of TLS 1.2
ok jsing@ tb@

1 files changed, 3 insertions, 1 deletions

diff --git a/src/lib/libssl/ssl_sigalgs.h b/src/lib/libssl/ssl_sigalgs.h
index 5ae595835b..8ea4df9e31 100644
--- a/src/lib/libssl/ssl_sigalgs.h
+++ b/src/lib/libssl/ssl_sigalgs.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssl_sigalgs.h,v 1.8 2018/11/16 02:41:16 beck Exp $ */
+/* $OpenBSD: ssl_sigalgs.h,v 1.9 2019/01/23 16:46:04 beck Exp $ */
 /*
  * Copyright (c) 2018, Bob Beck <beck@openbsd.org>
  *
@@ -71,6 +71,8 @@ struct ssl_sigalg{
 
 extern uint16_t tls12_sigalgs[];
 extern size_t tls12_sigalgs_len;
+extern uint16_t tls13_sigalgs[];
+extern size_t tls13_sigalgs_len;
 
 const struct ssl_sigalg *ssl_sigalg_lookup(uint16_t sigalg);
 const struct ssl_sigalg *ssl_sigalg(uint16_t sigalg, uint16_t *values, size_t len);