userpref: Use RSA_generate_key_ex() in favor of deprecated RSA_generate_key()

The RSA_generate_key function has been deprecated in OpenSSL
in favour of the newer function RSA_generate_key_ex.

RSA_generate_key_ex with its current interface has been
part of OpenSSL starting from version 0.9.8 (July 2005).

1 files changed, 10 insertions, 2 deletions

diff --git a/common/userpref.c b/common/userpref.c
index e9b47dc..8af4cdf 100644
--- a/common/userpref.c
+++ b/common/userpref.c
@@ -690,8 +690,16 @@ static userpref_error_t userpref_device_record_gen_keys_and_cert(const char* udi
 
         debug_info("generating keys and certificates");
 #ifdef HAVE_OPENSSL
-        RSA* root_keypair = RSA_generate_key(2048, 65537, NULL, NULL);
-        RSA* host_keypair = RSA_generate_key(2048, 65537, NULL, NULL);
+        BIGNUM *e = BN_new();
+        RSA* root_keypair = RSA_new();
+        RSA* host_keypair = RSA_new();
+
+        BN_set_word(e, 65537);
+
+        RSA_generate_key_ex(root_keypair, 2048, e, NULL);
+        RSA_generate_key_ex(host_keypair, 2048, e, NULL);
+
+        BN_free(e);
 
         EVP_PKEY* root_pkey = EVP_PKEY_new();
         EVP_PKEY_assign_RSA(root_pkey, root_keypair);