Refactor/split ED25519_keypair.

This brings in ED25519_keypair_from_seed() from BoringSSL commit
c034e2d3ce16, which ED25519_keypair then wraps. This reduces differences
between us and BoringSSL.

1 files changed, 4 insertions, 1 deletions

diff --git a/src/lib/libcrypto/curve25519/curve25519_internal.h b/src/lib/libcrypto/curve25519/curve25519_internal.h
index 09d20a4fec..9d2ee9b4d7 100644
--- a/src/lib/libcrypto/curve25519/curve25519_internal.h
+++ b/src/lib/libcrypto/curve25519/curve25519_internal.h
@@ -1,4 +1,4 @@
-/*      $OpenBSD: curve25519_internal.h,v 1.3 2019/05/11 15:55:52 tb Exp $ */
+/*      $OpenBSD: curve25519_internal.h,v 1.4 2022/11/08 17:07:17 jsing Exp $ */
 /*
  * Copyright (c) 2015, Google Inc.
  *
@@ -94,6 +94,9 @@ void x25519_scalar_mult(uint8_t out[32], const uint8_t scalar[32],
 void x25519_scalar_mult_generic(uint8_t out[32], const uint8_t scalar[32],
     const uint8_t point[32]);
 
+void ED25519_keypair_from_seed(uint8_t out_public_key[32],
+    uint8_t out_private_key[64], const uint8_t seed[32]);
+
 __END_HIDDEN_DECLS
 
 #endif  /* HEADER_CURVE25519_INTERNAL_H */