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-rw-r--r--security/nss/lib/freebl/aes-x86.c157
1 files changed, 157 insertions, 0 deletions
diff --git a/security/nss/lib/freebl/aes-x86.c b/security/nss/lib/freebl/aes-x86.c
new file mode 100644
index 000000000..830b4782f
--- /dev/null
+++ b/security/nss/lib/freebl/aes-x86.c
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifdef FREEBL_NO_DEPEND
+#include "stubs.h"
+#endif
+#include "rijndael.h"
+#include "secerr.h"
+
+#include <wmmintrin.h> /* aes-ni */
+
+#define EXPAND_KEY128(k, rcon, res) \
+ tmp_key = _mm_aeskeygenassist_si128(k, rcon); \
+ tmp_key = _mm_shuffle_epi32(tmp_key, 0xFF); \
+ tmp = _mm_xor_si128(k, _mm_slli_si128(k, 4)); \
+ tmp = _mm_xor_si128(tmp, _mm_slli_si128(tmp, 4)); \
+ tmp = _mm_xor_si128(tmp, _mm_slli_si128(tmp, 4)); \
+ res = _mm_xor_si128(tmp, tmp_key)
+
+static void
+native_key_expansion128(AESContext *cx, const unsigned char *key)
+{
+ __m128i *keySchedule = cx->keySchedule;
+ pre_align __m128i tmp_key post_align;
+ pre_align __m128i tmp post_align;
+ keySchedule[0] = _mm_loadu_si128((__m128i *)key);
+ EXPAND_KEY128(keySchedule[0], 0x01, keySchedule[1]);
+ EXPAND_KEY128(keySchedule[1], 0x02, keySchedule[2]);
+ EXPAND_KEY128(keySchedule[2], 0x04, keySchedule[3]);
+ EXPAND_KEY128(keySchedule[3], 0x08, keySchedule[4]);
+ EXPAND_KEY128(keySchedule[4], 0x10, keySchedule[5]);
+ EXPAND_KEY128(keySchedule[5], 0x20, keySchedule[6]);
+ EXPAND_KEY128(keySchedule[6], 0x40, keySchedule[7]);
+ EXPAND_KEY128(keySchedule[7], 0x80, keySchedule[8]);
+ EXPAND_KEY128(keySchedule[8], 0x1B, keySchedule[9]);
+ EXPAND_KEY128(keySchedule[9], 0x36, keySchedule[10]);
+}
+
+#define EXPAND_KEY192_PART1(res, k0, kt, rcon) \
+ tmp2 = _mm_slli_si128(k0, 4); \
+ tmp1 = _mm_xor_si128(k0, tmp2); \
+ tmp2 = _mm_slli_si128(tmp2, 4); \
+ tmp1 = _mm_xor_si128(_mm_xor_si128(tmp1, tmp2), _mm_slli_si128(tmp2, 4)); \
+ tmp2 = _mm_aeskeygenassist_si128(kt, rcon); \
+ res = _mm_xor_si128(tmp1, _mm_shuffle_epi32(tmp2, 0x55))
+
+#define EXPAND_KEY192_PART2(res, k1, k2) \
+ tmp2 = _mm_xor_si128(k1, _mm_slli_si128(k1, 4)); \
+ res = _mm_xor_si128(tmp2, _mm_shuffle_epi32(k2, 0xFF))
+
+#define EXPAND_KEY192(k0, res1, res2, res3, carry, rcon1, rcon2) \
+ EXPAND_KEY192_PART1(tmp3, k0, res1, rcon1); \
+ EXPAND_KEY192_PART2(carry, res1, tmp3); \
+ res1 = _mm_castpd_si128(_mm_shuffle_pd(_mm_castsi128_pd(res1), \
+ _mm_castsi128_pd(tmp3), 0)); \
+ res2 = _mm_castpd_si128(_mm_shuffle_pd(_mm_castsi128_pd(tmp3), \
+ _mm_castsi128_pd(carry), 1)); \
+ EXPAND_KEY192_PART1(res3, tmp3, carry, rcon2)
+
+static void
+native_key_expansion192(AESContext *cx, const unsigned char *key)
+{
+ __m128i *keySchedule = cx->keySchedule;
+ pre_align __m128i tmp1 post_align;
+ pre_align __m128i tmp2 post_align;
+ pre_align __m128i tmp3 post_align;
+ pre_align __m128i carry post_align;
+ keySchedule[0] = _mm_loadu_si128((__m128i *)key);
+ keySchedule[1] = _mm_loadu_si128((__m128i *)(key + 16));
+ EXPAND_KEY192(keySchedule[0], keySchedule[1], keySchedule[2],
+ keySchedule[3], carry, 0x1, 0x2);
+ EXPAND_KEY192_PART2(keySchedule[4], carry, keySchedule[3]);
+ EXPAND_KEY192(keySchedule[3], keySchedule[4], keySchedule[5],
+ keySchedule[6], carry, 0x4, 0x8);
+ EXPAND_KEY192_PART2(keySchedule[7], carry, keySchedule[6]);
+ EXPAND_KEY192(keySchedule[6], keySchedule[7], keySchedule[8],
+ keySchedule[9], carry, 0x10, 0x20);
+ EXPAND_KEY192_PART2(keySchedule[10], carry, keySchedule[9]);
+ EXPAND_KEY192(keySchedule[9], keySchedule[10], keySchedule[11],
+ keySchedule[12], carry, 0x40, 0x80);
+}
+
+#define EXPAND_KEY256_PART(res, rconx, k1x, k2x, X) \
+ tmp_key = _mm_shuffle_epi32(_mm_aeskeygenassist_si128(k2x, rconx), X); \
+ tmp2 = _mm_slli_si128(k1x, 4); \
+ tmp1 = _mm_xor_si128(k1x, tmp2); \
+ tmp2 = _mm_slli_si128(tmp2, 4); \
+ tmp1 = _mm_xor_si128(_mm_xor_si128(tmp1, tmp2), _mm_slli_si128(tmp2, 4)); \
+ res = _mm_xor_si128(tmp1, tmp_key);
+
+#define EXPAND_KEY256(res1, res2, k1, k2, rcon) \
+ EXPAND_KEY256_PART(res1, rcon, k1, k2, 0xFF); \
+ EXPAND_KEY256_PART(res2, 0x00, k2, res1, 0xAA)
+
+static void
+native_key_expansion256(AESContext *cx, const unsigned char *key)
+{
+ __m128i *keySchedule = cx->keySchedule;
+ pre_align __m128i tmp_key post_align;
+ pre_align __m128i tmp1 post_align;
+ pre_align __m128i tmp2 post_align;
+ keySchedule[0] = _mm_loadu_si128((__m128i *)key);
+ keySchedule[1] = _mm_loadu_si128((__m128i *)(key + 16));
+ EXPAND_KEY256(keySchedule[2], keySchedule[3], keySchedule[0],
+ keySchedule[1], 0x01);
+ EXPAND_KEY256(keySchedule[4], keySchedule[5], keySchedule[2],
+ keySchedule[3], 0x02);
+ EXPAND_KEY256(keySchedule[6], keySchedule[7], keySchedule[4],
+ keySchedule[5], 0x04);
+ EXPAND_KEY256(keySchedule[8], keySchedule[9], keySchedule[6],
+ keySchedule[7], 0x08);
+ EXPAND_KEY256(keySchedule[10], keySchedule[11], keySchedule[8],
+ keySchedule[9], 0x10);
+ EXPAND_KEY256(keySchedule[12], keySchedule[13], keySchedule[10],
+ keySchedule[11], 0x20);
+ EXPAND_KEY256_PART(keySchedule[14], 0x40, keySchedule[12],
+ keySchedule[13], 0xFF);
+}
+
+/*
+ * AES key expansion using aes-ni instructions.
+ */
+void
+rijndael_native_key_expansion(AESContext *cx, const unsigned char *key,
+ unsigned int Nk)
+{
+ switch (Nk) {
+ case 4:
+ native_key_expansion128(cx, key);
+ return;
+ case 6:
+ native_key_expansion192(cx, key);
+ return;
+ case 8:
+ native_key_expansion256(cx, key);
+ return;
+ default:
+ /* This shouldn't happen (checked by the caller). */
+ return;
+ }
+}
+
+void
+rijndael_native_encryptBlock(AESContext *cx,
+ unsigned char *output,
+ const unsigned char *input)
+{
+ int i;
+ pre_align __m128i m post_align = _mm_loadu_si128((__m128i *)input);
+ m = _mm_xor_si128(m, cx->keySchedule[0]);
+ for (i = 1; i < cx->Nr; ++i) {
+ m = _mm_aesenc_si128(m, cx->keySchedule[i]);
+ }
+ m = _mm_aesenclast_si128(m, cx->keySchedule[cx->Nr]);
+ _mm_storeu_si128((__m128i *)output, m);
+}