Added AES+GHASH implementation using AES-NI opcodes; also ARM-Thumb assembly for...

[BearSSL] / src / ssl / ssl_engine_default_aesgcm.c

diff --git a/src/ssl/ssl_engine_default_aesgcm.c b/src/ssl/ssl_engine_default_aesgcm.c
new file mode 100644 (file)
index 0000000..9968342
--- /dev/null
+++ b/src/ssl/ssl_engine_default_aesgcm.c
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2017 Thomas Pornin <pornin@bolet.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining 
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be 
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "inner.h"
+
+/* see bearssl_ssl.h */
+void
+br_ssl_engine_set_default_aes_gcm(br_ssl_engine_context *cc)
+{
+#if BR_AES_X86NI
+       const br_block_ctr_class *ictr;
+       br_ghash ighash;
+#endif
+
+       br_ssl_engine_set_gcm(cc,
+               &br_sslrec_in_gcm_vtable,
+               &br_sslrec_out_gcm_vtable);
+#if BR_AES_X86NI
+       ictr = br_aes_x86ni_ctr_get_vtable();
+       if (ictr != NULL) {
+               br_ssl_engine_set_aes_ctr(cc, ictr);
+       } else {
+#if BR_64
+               br_ssl_engine_set_aes_ctr(cc, &br_aes_ct64_ctr_vtable);
+#else
+               br_ssl_engine_set_aes_ctr(cc, &br_aes_ct_ctr_vtable);
+#endif
+       }
+#else
+#if BR_64
+       br_ssl_engine_set_aes_ctr(cc, &br_aes_ct64_ctr_vtable);
+#else
+       br_ssl_engine_set_aes_ctr(cc, &br_aes_ct_ctr_vtable);
+#endif
+#endif
+#if BR_AES_X86NI
+       ighash = br_ghash_pclmul_get();
+       if (ighash != 0) {
+               br_ssl_engine_set_ghash(cc, ighash);
+               return;
+       }
+#endif
+#if BR_LOMUL
+       br_ssl_engine_set_ghash(cc, &br_ghash_ctmul32);
+#elif BR_64
+       br_ssl_engine_set_ghash(cc, &br_ghash_ctmul64);
+#else
+       br_ssl_engine_set_ghash(cc, &br_ghash_ctmul);
+#endif
+}