diff -up vsftpd-3.0.2/parseconf.c.ecdh vsftpd-3.0.2/parseconf.c
--- vsftpd-3.0.2/parseconf.c.ecdh 2014-06-04 10:25:36.786735755 +0200
+++ vsftpd-3.0.2/parseconf.c 2014-06-04 10:25:36.812735747 +0200
@@ -176,6 +176,7 @@ parseconf_str_array[] =
{ "rsa_cert_file", &tunable_rsa_cert_file },
{ "dsa_cert_file", &tunable_dsa_cert_file },
{ "dh_param_file", &tunable_dh_param_file },
+ { "ecdh_param_file", &tunable_ecdh_param_file },
{ "ssl_ciphers", &tunable_ssl_ciphers },
{ "rsa_private_key_file", &tunable_rsa_private_key_file },
{ "dsa_private_key_file", &tunable_dsa_private_key_file },
diff -up vsftpd-3.0.2/ssl.c.ecdh vsftpd-3.0.2/ssl.c
--- vsftpd-3.0.2/ssl.c.ecdh 2014-06-04 10:25:36.786735755 +0200
+++ vsftpd-3.0.2/ssl.c 2014-06-04 10:25:36.812735747 +0200
@@ -122,7 +122,7 @@ ssl_init(struct vsf_session* p_sess)
{
die("SSL: could not allocate SSL context");
}
- options = SSL_OP_ALL | SSL_OP_SINGLE_DH_USE;
+ options = SSL_OP_ALL | SSL_OP_SINGLE_DH_USE | SSL_OP_SINGLE_ECDH_USE;
if (!tunable_sslv2)
{
options |= SSL_OP_NO_SSLv2;
@@ -235,6 +235,41 @@ ssl_init(struct vsf_session* p_sess)
SSL_CTX_set_tmp_dh_callback(p_ctx, ssl_tmp_dh_callback);
+ if (tunable_ecdh_param_file)
+ {
+ BIO *bio;
+ int nid;
+ EC_GROUP *ecparams = NULL;
+ EC_KEY *eckey;
+
+ if ((bio = BIO_new_file(tunable_ecdh_param_file, "r")) == NULL)
+ die("SSL: cannot load custom ec params");
+ else
+ {
+ ecparams = PEM_read_bio_ECPKParameters(bio, NULL, NULL, NULL);
+ BIO_free(bio);
+
+ if (ecparams && (nid = EC_GROUP_get_curve_name(ecparams)) &&
+ (eckey = EC_KEY_new_by_curve_name(nid)))
+ {
+ if (!SSL_CTX_set_tmp_ecdh(p_ctx, eckey))
+ die("SSL: setting custom EC params failed");
+ }
+ else
+ {
+ die("SSL: getting ec group or key failed");
+ }
+ }
+ }
+ else
+ {
+#if defined(SSL_CTX_set_ecdh_auto)
+ SSL_CTX_set_ecdh_auto(p_ctx, 1);
+#else
+ SSL_CTX_set_tmp_ecdh(p_ctx, EC_KEY_new_by_curve_name(NID_X9_62_prime256v1));
+#endif
+ }
+
p_sess->p_ssl_ctx = p_ctx;
ssl_inited = 1;
}
diff -up vsftpd-3.0.2/tunables.c.ecdh vsftpd-3.0.2/tunables.c
--- vsftpd-3.0.2/tunables.c.ecdh 2014-06-04 10:25:36.787735755 +0200
+++ vsftpd-3.0.2/tunables.c 2014-06-04 10:25:36.813735747 +0200
@@ -140,6 +140,7 @@ const char* tunable_email_password_file;
const char* tunable_rsa_cert_file;
const char* tunable_dsa_cert_file;
const char* tunable_dh_param_file;
+const char* tunable_ecdh_param_file;
const char* tunable_ssl_ciphers;
const char* tunable_rsa_private_key_file;
const char* tunable_dsa_private_key_file;
@@ -288,7 +289,8 @@ tunables_load_defaults()
&tunable_rsa_cert_file);
install_str_setting(0, &tunable_dsa_cert_file);
install_str_setting(0, &tunable_dh_param_file);
- install_str_setting("AES128-SHA:DES-CBC3-SHA:DHE-RSA-AES256-SHA",
+ install_str_setting(0, &tunable_ecdh_param_file);
+ install_str_setting("AES128-SHA:DES-CBC3-SHA:DHE-RSA-AES256-SHA:ECDHE-RSA-AES128-SHA",
&tunable_ssl_ciphers);
install_str_setting(0, &tunable_rsa_private_key_file);
install_str_setting(0, &tunable_dsa_private_key_file);
diff -up vsftpd-3.0.2/tunables.h.ecdh vsftpd-3.0.2/tunables.h
--- vsftpd-3.0.2/tunables.h.ecdh 2014-06-04 10:25:36.787735755 +0200
+++ vsftpd-3.0.2/tunables.h 2014-06-04 10:25:36.813735747 +0200
@@ -142,6 +142,7 @@ extern const char* tunable_email_passwor
extern const char* tunable_rsa_cert_file;
extern const char* tunable_dsa_cert_file;
extern const char* tunable_dh_param_file;
+extern const char* tunable_ecdh_param_file;
extern const char* tunable_ssl_ciphers;
extern const char* tunable_rsa_private_key_file;
extern const char* tunable_dsa_private_key_file;
diff -up vsftpd-3.0.2/vsftpd.conf.5.ecdh vsftpd-3.0.2/vsftpd.conf.5
--- vsftpd-3.0.2/vsftpd.conf.5.ecdh 2014-06-04 10:25:36.787735755 +0200
+++ vsftpd-3.0.2/vsftpd.conf.5 2014-06-04 10:25:36.813735747 +0200
@@ -890,6 +890,14 @@ ephemeral Diffie-Hellman key exchange in
Default: (none - use built in parameters appropriate for certificate key size)
.TP
+.B ecdh_param_file
+This option specifies the location of custom parameters for ephemeral
+Elliptic Curve Diffie-Hellman (ECDH) key exchange.
+
+Default: (none - use built in parameters, NIST P-256 with OpenSSL 1.0.1 and
+automatically selected curve based on client preferences with OpenSSL 1.0.2
+and later)
+.TP
.B email_password_file
This option can be used to provide an alternate file for usage by the
.BR secure_email_list_enable