Mercurial > hg > nginx
changeset 3960:0832a6997227
ECDHE support
patch by Adrian Kotelba
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Wed, 20 Jul 2011 15:42:40 +0000 |
| parents | b1f48fa31e6c |
| children | 4048aa055411 |
| files | src/event/ngx_event_openssl.c src/event/ngx_event_openssl.h src/http/modules/ngx_http_ssl_module.c src/http/modules/ngx_http_ssl_module.h src/mail/ngx_mail_ssl_module.c src/mail/ngx_mail_ssl_module.h |
| diffstat | 6 files changed, 72 insertions(+), 2 deletions(-) [+] |
line wrap: on
line diff
--- a/src/event/ngx_event_openssl.c +++ b/src/event/ngx_event_openssl.c @@ -468,6 +468,45 @@ ngx_ssl_dhparam(ngx_conf_t *cf, ngx_ssl_ return NGX_OK; } +ngx_int_t +ngx_ssl_ecdh_curve(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *name) +{ +#if OPENSSL_VERSION_NUMBER >= 0x0090800fL +#ifndef OPENSSL_NO_ECDH + int nid; + EC_KEY *ecdh; + + /* + * Elliptic-Curve Diffie-Hellman parameters are either "named curves" + * from RFC 4492 section 5.1.1, or explicitely described curves over + * binary fields. OpenSSL only supports the "named curves", which provide + * maximum interoperability. + */ + + nid = OBJ_sn2nid((const char *) name->data); + if (nid == 0) { + ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0, + "Unknown curve name \"%s\"", name->data); + return NGX_ERROR; + } + + ecdh = EC_KEY_new_by_curve_name(nid); + if (ecdh == NULL) { + ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0, + "Unable to create curve \"%s\"", name->data); + return NGX_ERROR; + } + + SSL_CTX_set_tmp_ecdh(ssl->ctx, ecdh); + + SSL_CTX_set_options(ssl->ctx, SSL_OP_SINGLE_ECDH_USE); + + EC_KEY_free(ecdh); +#endif +#endif + + return NGX_OK; +} ngx_int_t ngx_ssl_create_connection(ngx_ssl_t *ssl, ngx_connection_t *c, ngx_uint_t flags)
--- a/src/event/ngx_event_openssl.h +++ b/src/event/ngx_event_openssl.h @@ -101,6 +101,7 @@ ngx_int_t ngx_ssl_client_certificate(ngx ngx_int_t ngx_ssl_crl(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *crl); RSA *ngx_ssl_rsa512_key_callback(SSL *ssl, int is_export, int key_length); ngx_int_t ngx_ssl_dhparam(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *file); +ngx_int_t ngx_ssl_ecdh_curve(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *name); ngx_int_t ngx_ssl_session_cache(ngx_ssl_t *ssl, ngx_str_t *sess_ctx, ssize_t builtin_session_cache, ngx_shm_zone_t *shm_zone, time_t timeout); ngx_int_t ngx_ssl_create_connection(ngx_ssl_t *ssl, ngx_connection_t *c,
--- a/src/http/modules/ngx_http_ssl_module.c +++ b/src/http/modules/ngx_http_ssl_module.c @@ -13,7 +13,8 @@ typedef ngx_int_t (*ngx_ssl_variable_han ngx_pool_t *pool, ngx_str_t *s); -#define NGX_DEFAULT_CIPHERS "HIGH:!aNULL:!MD5" +#define NGX_DEFAULT_CIPHERS "HIGH:!aNULL:!MD5" +#define NGX_DEFAULT_ECDH_CURVE "prime256v1" static ngx_int_t ngx_http_ssl_static_variable(ngx_http_request_t *r, @@ -78,6 +79,13 @@ static ngx_command_t ngx_http_ssl_comma offsetof(ngx_http_ssl_srv_conf_t, dhparam), NULL }, + { ngx_string("ssl_ecdh_curve"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, + ngx_conf_set_str_slot, + NGX_HTTP_SRV_CONF_OFFSET, + offsetof(ngx_http_ssl_srv_conf_t, ecdh_curve), + NULL }, + { ngx_string("ssl_protocols"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_1MORE, ngx_conf_set_bitmask_slot, @@ -312,6 +320,7 @@ ngx_http_ssl_create_srv_conf(ngx_conf_t * sscf->certificate = { 0, NULL }; * sscf->certificate_key = { 0, NULL }; * sscf->dhparam = { 0, NULL }; + * sscf->ecdh_curve = { 0, NULL }; * sscf->client_certificate = { 0, NULL }; * sscf->crl = { 0, NULL }; * sscf->ciphers = { 0, NULL }; @@ -360,6 +369,9 @@ ngx_http_ssl_merge_srv_conf(ngx_conf_t * ""); ngx_conf_merge_str_value(conf->crl, prev->crl, ""); + ngx_conf_merge_str_value(conf->ecdh_curve, prev->ecdh_curve, + NGX_DEFAULT_ECDH_CURVE); + ngx_conf_merge_str_value(conf->ciphers, prev->ciphers, NGX_DEFAULT_CIPHERS); @@ -471,6 +483,10 @@ ngx_http_ssl_merge_srv_conf(ngx_conf_t * return NGX_CONF_ERROR; } + if (ngx_ssl_ecdh_curve(cf, &conf->ssl, &conf->ecdh_curve) != NGX_OK) { + return NGX_CONF_ERROR; + } + ngx_conf_merge_value(conf->builtin_session_cache, prev->builtin_session_cache, NGX_SSL_NONE_SCACHE);
--- a/src/http/modules/ngx_http_ssl_module.h +++ b/src/http/modules/ngx_http_ssl_module.h @@ -32,6 +32,7 @@ typedef struct { ngx_str_t certificate; ngx_str_t certificate_key; ngx_str_t dhparam; + ngx_str_t ecdh_curve; ngx_str_t client_certificate; ngx_str_t crl;
--- a/src/mail/ngx_mail_ssl_module.c +++ b/src/mail/ngx_mail_ssl_module.c @@ -9,7 +9,8 @@ #include <ngx_mail.h> -#define NGX_DEFAULT_CIPHERS "HIGH:!aNULL:!MD5" +#define NGX_DEFAULT_CIPHERS "HIGH:!aNULL:!MD5" +#define NGX_DEFAULT_ECDH_CURVE "prime256v1" static void *ngx_mail_ssl_create_conf(ngx_conf_t *cf); @@ -77,6 +78,13 @@ static ngx_command_t ngx_mail_ssl_comma offsetof(ngx_mail_ssl_conf_t, dhparam), NULL }, + { ngx_string("ssl_ecdh_curve"), + NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1, + ngx_conf_set_str_slot, + NGX_MAIL_SRV_CONF_OFFSET, + offsetof(ngx_mail_ssl_conf_t, ecdh_curve), + NULL }, + { ngx_string("ssl_protocols"), NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, ngx_conf_set_bitmask_slot, @@ -163,6 +171,7 @@ ngx_mail_ssl_create_conf(ngx_conf_t *cf) * scf->certificate = { 0, NULL }; * scf->certificate_key = { 0, NULL }; * scf->dhparam = { 0, NULL }; + * scf->ecdh_curve = { 0, NULL }; * scf->ciphers = { 0, NULL }; * scf->shm_zone = NULL; */ @@ -204,6 +213,9 @@ ngx_mail_ssl_merge_conf(ngx_conf_t *cf, ngx_conf_merge_str_value(conf->dhparam, prev->dhparam, ""); + ngx_conf_merge_str_value(conf->ecdh_curve, prev->ecdh_curve, + NGX_DEFAULT_ECDH_CURVE); + ngx_conf_merge_str_value(conf->ciphers, prev->ciphers, NGX_DEFAULT_CIPHERS);