--- /dev/null
+/*
+ * 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"
+
+#if BR_AES_X86NI
+
+#if BR_AES_X86NI_GCC
+#include <wmmintrin.h>
+#endif
+
+#if BR_AES_X86NI_MSC
+#include <intrin.h>
+#endif
+
+/* see bearssl_block.h */
+void
+br_aes_x86ni_cbcdec_init(br_aes_x86ni_cbcdec_keys *ctx,
+ const void *key, size_t len)
+{
+ ctx->vtable = &br_aes_x86ni_cbcdec_vtable;
+ ctx->num_rounds = br_aes_x86ni_keysched_dec(ctx->skey.skni, key, len);
+}
+
+/* see bearssl_block.h */
+BR_TARGET("sse2,aes")
+void
+br_aes_x86ni_cbcdec_run(const br_aes_x86ni_cbcdec_keys *ctx,
+ void *iv, void *data, size_t len)
+{
+ unsigned char *buf;
+ unsigned num_rounds;
+ __m128i sk[15], ivx;
+ unsigned u;
+
+ buf = data;
+ ivx = _mm_loadu_si128(iv);
+ num_rounds = ctx->num_rounds;
+ for (u = 0; u <= num_rounds; u ++) {
+ sk[u] = _mm_loadu_si128((void *)(ctx->skey.skni + (u << 4)));
+ }
+ while (len > 0) {
+ __m128i x0, x1, x2, x3, e0, e1, e2, e3;
+
+ x0 = _mm_loadu_si128((void *)(buf + 0));
+ if (len >= 64) {
+ x1 = _mm_loadu_si128((void *)(buf + 16));
+ x2 = _mm_loadu_si128((void *)(buf + 32));
+ x3 = _mm_loadu_si128((void *)(buf + 48));
+ } else {
+ x0 = _mm_loadu_si128((void *)(buf + 0));
+ if (len >= 32) {
+ x1 = _mm_loadu_si128((void *)(buf + 16));
+ if (len >= 48) {
+ x2 = _mm_loadu_si128(
+ (void *)(buf + 32));
+ } else {
+ x2 = x0;
+ }
+ } else {
+ x1 = x0;
+ x2 = x0;
+ }
+ x3 = x0;
+ }
+ e0 = x0;
+ e1 = x1;
+ e2 = x2;
+ e3 = x3;
+ x0 = _mm_xor_si128(x0, sk[0]);
+ x1 = _mm_xor_si128(x1, sk[0]);
+ x2 = _mm_xor_si128(x2, sk[0]);
+ x3 = _mm_xor_si128(x3, sk[0]);
+ x0 = _mm_aesdec_si128(x0, sk[1]);
+ x1 = _mm_aesdec_si128(x1, sk[1]);
+ x2 = _mm_aesdec_si128(x2, sk[1]);
+ x3 = _mm_aesdec_si128(x3, sk[1]);
+ x0 = _mm_aesdec_si128(x0, sk[2]);
+ x1 = _mm_aesdec_si128(x1, sk[2]);
+ x2 = _mm_aesdec_si128(x2, sk[2]);
+ x3 = _mm_aesdec_si128(x3, sk[2]);
+ x0 = _mm_aesdec_si128(x0, sk[3]);
+ x1 = _mm_aesdec_si128(x1, sk[3]);
+ x2 = _mm_aesdec_si128(x2, sk[3]);
+ x3 = _mm_aesdec_si128(x3, sk[3]);
+ x0 = _mm_aesdec_si128(x0, sk[4]);
+ x1 = _mm_aesdec_si128(x1, sk[4]);
+ x2 = _mm_aesdec_si128(x2, sk[4]);
+ x3 = _mm_aesdec_si128(x3, sk[4]);
+ x0 = _mm_aesdec_si128(x0, sk[5]);
+ x1 = _mm_aesdec_si128(x1, sk[5]);
+ x2 = _mm_aesdec_si128(x2, sk[5]);
+ x3 = _mm_aesdec_si128(x3, sk[5]);
+ x0 = _mm_aesdec_si128(x0, sk[6]);
+ x1 = _mm_aesdec_si128(x1, sk[6]);
+ x2 = _mm_aesdec_si128(x2, sk[6]);
+ x3 = _mm_aesdec_si128(x3, sk[6]);
+ x0 = _mm_aesdec_si128(x0, sk[7]);
+ x1 = _mm_aesdec_si128(x1, sk[7]);
+ x2 = _mm_aesdec_si128(x2, sk[7]);
+ x3 = _mm_aesdec_si128(x3, sk[7]);
+ x0 = _mm_aesdec_si128(x0, sk[8]);
+ x1 = _mm_aesdec_si128(x1, sk[8]);
+ x2 = _mm_aesdec_si128(x2, sk[8]);
+ x3 = _mm_aesdec_si128(x3, sk[8]);
+ x0 = _mm_aesdec_si128(x0, sk[9]);
+ x1 = _mm_aesdec_si128(x1, sk[9]);
+ x2 = _mm_aesdec_si128(x2, sk[9]);
+ x3 = _mm_aesdec_si128(x3, sk[9]);
+ if (num_rounds == 10) {
+ x0 = _mm_aesdeclast_si128(x0, sk[10]);
+ x1 = _mm_aesdeclast_si128(x1, sk[10]);
+ x2 = _mm_aesdeclast_si128(x2, sk[10]);
+ x3 = _mm_aesdeclast_si128(x3, sk[10]);
+ } else if (num_rounds == 12) {
+ x0 = _mm_aesdec_si128(x0, sk[10]);
+ x1 = _mm_aesdec_si128(x1, sk[10]);
+ x2 = _mm_aesdec_si128(x2, sk[10]);
+ x3 = _mm_aesdec_si128(x3, sk[10]);
+ x0 = _mm_aesdec_si128(x0, sk[11]);
+ x1 = _mm_aesdec_si128(x1, sk[11]);
+ x2 = _mm_aesdec_si128(x2, sk[11]);
+ x3 = _mm_aesdec_si128(x3, sk[11]);
+ x0 = _mm_aesdeclast_si128(x0, sk[12]);
+ x1 = _mm_aesdeclast_si128(x1, sk[12]);
+ x2 = _mm_aesdeclast_si128(x2, sk[12]);
+ x3 = _mm_aesdeclast_si128(x3, sk[12]);
+ } else {
+ x0 = _mm_aesdec_si128(x0, sk[10]);
+ x1 = _mm_aesdec_si128(x1, sk[10]);
+ x2 = _mm_aesdec_si128(x2, sk[10]);
+ x3 = _mm_aesdec_si128(x3, sk[10]);
+ x0 = _mm_aesdec_si128(x0, sk[11]);
+ x1 = _mm_aesdec_si128(x1, sk[11]);
+ x2 = _mm_aesdec_si128(x2, sk[11]);
+ x3 = _mm_aesdec_si128(x3, sk[11]);
+ x0 = _mm_aesdec_si128(x0, sk[12]);
+ x1 = _mm_aesdec_si128(x1, sk[12]);
+ x2 = _mm_aesdec_si128(x2, sk[12]);
+ x3 = _mm_aesdec_si128(x3, sk[12]);
+ x0 = _mm_aesdec_si128(x0, sk[13]);
+ x1 = _mm_aesdec_si128(x1, sk[13]);
+ x2 = _mm_aesdec_si128(x2, sk[13]);
+ x3 = _mm_aesdec_si128(x3, sk[13]);
+ x0 = _mm_aesdeclast_si128(x0, sk[14]);
+ x1 = _mm_aesdeclast_si128(x1, sk[14]);
+ x2 = _mm_aesdeclast_si128(x2, sk[14]);
+ x3 = _mm_aesdeclast_si128(x3, sk[14]);
+ }
+ x0 = _mm_xor_si128(x0, ivx);
+ x1 = _mm_xor_si128(x1, e0);
+ x2 = _mm_xor_si128(x2, e1);
+ x3 = _mm_xor_si128(x3, e2);
+ ivx = e3;
+ _mm_storeu_si128((void *)(buf + 0), x0);
+ if (len >= 64) {
+ _mm_storeu_si128((void *)(buf + 16), x1);
+ _mm_storeu_si128((void *)(buf + 32), x2);
+ _mm_storeu_si128((void *)(buf + 48), x3);
+ buf += 64;
+ len -= 64;
+ } else {
+ if (len >= 32) {
+ _mm_storeu_si128((void *)(buf + 16), x1);
+ if (len >= 48) {
+ _mm_storeu_si128(
+ (void *)(buf + 32), x2);
+ }
+ }
+ break;
+ }
+ }
+ _mm_storeu_si128(iv, ivx);
+}
+
+/* see bearssl_block.h */
+const br_block_cbcdec_class br_aes_x86ni_cbcdec_vtable = {
+ sizeof(br_aes_x86ni_cbcdec_keys),
+ 16,
+ 4,
+ (void (*)(const br_block_cbcdec_class **, const void *, size_t))
+ &br_aes_x86ni_cbcdec_init,
+ (void (*)(const br_block_cbcdec_class *const *, void *, void *, size_t))
+ &br_aes_x86ni_cbcdec_run
+};
+
+/* see bearssl_block.h */
+const br_block_cbcdec_class *
+br_aes_x86ni_cbcdec_get_vtable(void)
+{
+ return br_aes_x86ni_supported() ? &br_aes_x86ni_cbcdec_vtable : NULL;
+}
+
+#else
+
+/* see bearssl_block.h */
+const br_block_cbcdec_class *
+br_aes_x86ni_cbcdec_get_vtable(void)
+{
+ return NULL;
+}
+
+#endif
projects / BearSSL / blobdiff