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-rw-r--r--src/crypto/mac/ghash/pclmulqdq/ghash_pclmulqdq.c61
1 files changed, 61 insertions, 0 deletions
diff --git a/src/crypto/mac/ghash/pclmulqdq/ghash_pclmulqdq.c b/src/crypto/mac/ghash/pclmulqdq/ghash_pclmulqdq.c
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+++ b/src/crypto/mac/ghash/pclmulqdq/ghash_pclmulqdq.c
@@ -0,0 +1,61 @@
+/*
+ Copyright (c) 2012-2013, Matthias Schiffer <mschiffer@universe-factory.net>
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ 1. Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation
+ and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+#include "ghash_pclmulqdq.h"
+#include "../../../../cpuid.h"
+
+
+static bool ghash_available(void) {
+ static const uint64_t REQ = CPUID_FXSR|CPUID_SSSE3|CPUID_PCLMULQDQ;
+
+ return ((fastd_cpuid()&REQ) == REQ);
+}
+
+static fastd_mac_context_t* ghash_initialize(fastd_context_t *ctx UNUSED) {
+ return NULL;
+}
+
+static void ghash_free_state(fastd_context_t *ctx UNUSED, fastd_mac_state_t *state) {
+ if (state) {
+ secure_memzero(state, sizeof(*state));
+ free(state);
+ }
+}
+
+static void ghash_free(fastd_context_t *ctx UNUSED, fastd_mac_context_t *mctx UNUSED) {
+}
+
+const fastd_mac_t fastd_mac_ghash_pclmulqdq = {
+ .available = ghash_available,
+
+ .initialize = ghash_initialize,
+ .init_state = fastd_ghash_pclmulqdq_init_state,
+
+ .hash = fastd_ghash_pclmulqdq_hash,
+
+ .free_state = ghash_free_state,
+ .free = ghash_free,
+};