1 files changed, 143 insertions, 0 deletions
diff --git a/src/spdk/intel-ipsec-mb/des_key.c b/src/spdk/intel-ipsec-mb/des_key.c
new file mode 100644
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+++ b/src/spdk/intel-ipsec-mb/des_key.c
@@ -0,0 +1,143 @@
+/*******************************************************************************
+  Copyright (c) 2017-2018, Intel Corporation
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+      * Redistributions of source code must retain the above copyright notice,
+        this list of conditions and the following disclaimer.
+      * 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.
+      * Neither the name of Intel Corporation nor the names of its contributors
+        may be used to endorse or promote products derived from this software
+        without specific prior written permission.
+
+  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 OWNER 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 <stdlib.h>
+#include <stdint.h>
+
+#include "intel-ipsec-mb.h"
+#include "des.h"
+#include "des_utils.h"
+
+/**
+ * @brief Rotates 28-bit word
+ *
+ * Roll right of 28-bit word - used in 28-bit subkey operations
+ *
+ * @param val 28-bit word to be rotated
+ * @param nshift number of bits to rotate by
+ *
+ * @return val rotated by nshift bits
+ */
+__forceinline
+uint32_t rotate28(const uint32_t val, const unsigned nshift)
+{
+        const uint32_t mask = (UINT32_C(1) << 28) - UINT32_C(1);
+
+        IMB_ASSERT(nshift <= 28);
+        return ((val >> nshift) & mask) |
+                ((val << (28 - nshift)) & mask);
+}
+
+/**
+ * @brief Expands 8 groups of 6bits into 8 groups of 8bits
+ *
+ * @param in a 48-bit word including 8 groups of 6bits
+ *
+ * @return 64-bit word with 8 groups of 8bits
+ */
+__forceinline
+uint64_t expand_8x6_to_8x8(const uint64_t in)
+{
+        return (((in >> (6 * 0)) & UINT64_C(63)) << (8 * 0)) |
+                (((in >> (6 * 1)) & UINT64_C(63)) << (8 * 1)) |
+                (((in >> (6 * 2)) & UINT64_C(63)) << (8 * 2)) |
+                (((in >> (6 * 3)) & UINT64_C(63)) << (8 * 3)) |
+                (((in >> (6 * 4)) & UINT64_C(63)) << (8 * 4)) |
+                (((in >> (6 * 5)) & UINT64_C(63)) << (8 * 5)) |
+                (((in >> (6 * 6)) & UINT64_C(63)) << (8 * 6)) |
+                (((in >> (6 * 7)) & UINT64_C(63)) << (8 * 7));
+}
+
+static const uint8_t pc1c_table_fips46_3[28] = {
+        57, 49, 41, 33, 25, 17,  9,
+        1,  58, 50, 42, 34, 26, 18,
+        10,  2, 59, 51, 43, 35, 27,
+        19, 11,  3, 60, 52, 44, 36
+};
+
+static const uint8_t pc1d_table_fips46_3[28] = {
+        63, 55, 47, 39, 31, 23, 15,
+         7, 62, 54, 46, 38, 30, 22,
+        14,  6, 61, 53, 45, 37, 29,
+        21, 13,  5, 28, 20, 12, 4
+};
+
+static const uint8_t pc2_table_fips46_3[48] = {
+        14, 17, 11, 24,  1,  5,
+         3, 28, 15,  6, 21, 10,
+        23, 19, 12,  4, 26,  8,
+        16,  7, 27, 20, 13,  2,
+        41, 52, 31, 37, 47, 55,
+        30, 40, 51, 45, 33, 48,
+        44, 49, 39, 56, 34, 53,
+        46, 42, 50, 36, 29, 32
+};
+
+static const uint8_t shift_tab_fips46_3[16] = {
+        1, 1, 2, 2, 2, 2, 2, 2,
+        1, 2, 2, 2, 2, 2, 2, 1
+};
+
+int des_key_schedule(uint64_t *ks, const void *key)
+{
+        uint64_t c, d;
+        uint64_t t = 0;
+        int n;
+
+        if (key == NULL || ks == NULL)
+                return -1;
+
+        /* KEY: 56 bits but spread across 64 bits
+         * - MSB per byte used for parity
+         * - load_and_convert loads the key and swaps bits in bytes
+         *   so that bit numbers are more suitable for LE machine and
+         *   FIPS46-3 DES tables
+         */
+        t = load64_reflect(key);
+
+        /* PC1
+         * - built from the KEY, PC1 permute tables skip KEY parity bits
+         * - c & d are both 28 bits
+         */
+        c = permute_64b(t, pc1c_table_fips46_3, IMB_DIM(pc1c_table_fips46_3));
+        d = permute_64b(t, pc1d_table_fips46_3, IMB_DIM(pc1d_table_fips46_3));
+
+        /* KS rounds */
+        for (n = 0; n < 16; n++) {
+                c = rotate28((uint32_t)c, (unsigned) shift_tab_fips46_3[n]);
+                d = rotate28((uint32_t)d, (unsigned) shift_tab_fips46_3[n]);
+
+                /* PC2 */
+                t = permute_64b(c | (d << 28), pc2_table_fips46_3,
+                                IMB_DIM(pc2_table_fips46_3));
+
+                /* store KS as 6 bits per byte and keep LE */
+                ks[n] = expand_8x6_to_8x8(t);
+        }
+
+        return 0;
+}