From 3c527d55f906e6970d17c4cab6db90ae9e013235 Mon Sep 17 00:00:00 2001
From: Damien Miller <djm@mindrot.org>
Date: Fri, 24 Mar 2023 15:23:05 +1100
Subject: [PATCH] Allow building with BoringSSL

---
 openbsd-compat/openssl-compat.h | 9 +++++++++
 sshkey.c                        | 6 ++++++
 2 files changed, 15 insertions(+)

diff --git a/openbsd-compat/openssl-compat.h b/openbsd-compat/openssl-compat.h
index d0dd2c345..f6796b3ba 100644
--- a/openbsd-compat/openssl-compat.h
+++ b/openbsd-compat/openssl-compat.h
@@ -55,6 +55,15 @@ void ssh_libcrypto_init(void);
 # endif
 #endif
 
+#ifdef OPENSSL_IS_BORINGSSL
+/*
+ * BoringSSL (rightly) got rid of the BN_FLG_CONSTTIME flag, along with
+ * the entire BN_set_flags() interface.
+ * https://boringssl.googlesource.com/boringssl/+/0a211dfe9
+ */
+# define BN_set_flags(a, b)
+#endif
+
 #ifndef HAVE_EVP_CIPHER_CTX_GET_IV
 # ifdef HAVE_EVP_CIPHER_CTX_GET_UPDATED_IV
 #  define EVP_CIPHER_CTX_get_iv EVP_CIPHER_CTX_get_updated_iv
diff --git a/sshkey.c b/sshkey.c
index 43712253d..82af3184e 100644
--- a/sshkey.c
+++ b/sshkey.c
@@ -3342,16 +3342,22 @@ translate_libcrypto_error(unsigned long pem_err)
 	case ERR_LIB_PEM:
 		switch (pem_reason) {
 		case PEM_R_BAD_PASSWORD_READ:
+#ifdef PEM_R_PROBLEMS_GETTING_PASSWORD
 		case PEM_R_PROBLEMS_GETTING_PASSWORD:
+#endif
+#ifdef PEM_R_BAD_DECRYPT
 		case PEM_R_BAD_DECRYPT:
+#endif
 			return SSH_ERR_KEY_WRONG_PASSPHRASE;
 		default:
 			return SSH_ERR_INVALID_FORMAT;
 		}
 	case ERR_LIB_EVP:
 		switch (pem_reason) {
+#ifdef EVP_R_BAD_DECRYPT
 		case EVP_R_BAD_DECRYPT:
 			return SSH_ERR_KEY_WRONG_PASSPHRASE;
+#endif
 #ifdef EVP_R_BN_DECODE_ERROR
 		case EVP_R_BN_DECODE_ERROR:
 #endif