New upstream version 3.1.1

include/speck.h

@@ -0,0 +1,142 @@
+/**
+ * (C) 2007-22 - ntop.org and contributors
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not see see <http://www.gnu.org/licenses/>
+ *
+ */
+
+
+// cipher SPECK -- 128 bit block size -- 128 and 256 bit key size -- CTR mode
+// taken from (and modified: removed pure crypto-stream generation and seperated key expansion)
+// https://github.com/nsacyber/simon-speck-supercop/blob/master/crypto_stream/speck128256ctr/
+
+
+#ifndef SPECK_H
+#define SPECK_H
+
+
+#include <stdint.h>
+#include <stdlib.h>
+
+#include "portable_endian.h"
+
+
+#define u32 uint32_t
+#define u64 uint64_t
+
+#define N2N_SPECK_IVEC_SIZE     16
+#define SPECK_KEY_BYTES       (256/8)
+
+
+#if defined (__AVX512F__) // AVX512 support -----------------------------------------------------------------------
+
+
+#include <immintrin.h>
+#include <string.h>    /* memcpy() */
+
+#define u512 __m512i
+
+#define SPECK_ALIGNED_CTX       64
+
+typedef struct {
+    u512 rk[34];
+    u64 key[34];
+    u32 keysize;
+} speck_context_t;
+
+
+#elif defined (__AVX2__) // AVX2 support --------------------------------------------------------------------------
+
+
+#include <immintrin.h>
+
+#define u256 __m256i
+
+#define SPECK_ALIGNED_CTX       32
+
+typedef struct {
+    u256 rk[34];
+    u64 key[34];
+    u32 keysize;
+} speck_context_t;
+
+
+#elif defined (__SSE2__) // SSE support ---------------------------------------------------------------------------
+
+
+#include <immintrin.h>
+
+#define u128 __m128i
+
+#define SPECK_ALIGNED_CTX       16
+#define SPECK_CTX_BYVAL          1
+
+typedef struct {
+    u128 rk[34];
+    u64 key[34];
+    u32 keysize;
+} speck_context_t;
+
+
+#elif defined (__ARM_NEON) && defined (SPECK_ARM_NEON)      // NEON support ---------------------------------------
+
+
+#include <arm_neon.h>
+
+#define u128 uint64x2_t
+
+typedef struct {
+    u128 rk[34];
+    u64 key[34];
+    u32 keysize;
+} speck_context_t;
+
+
+#else // plain C --------------------------------------------------------------------------------------------------
+
+
+typedef struct {
+    u64 key[34];
+    u32 keysize;
+} speck_context_t;
+
+
+#endif // ---------------------------------------------------------------------------------------------------------
+
+
+int speck_ctr (unsigned char *out, const unsigned char *in, unsigned long long inlen,
+               const unsigned char *n,
+               speck_context_t *ctx);
+
+int speck_init (speck_context_t **ctx, const unsigned char *k, int keysize);
+
+int speck_deinit (speck_context_t *ctx);
+
+
+// ----------------------------------------------------------------------------------------------------------------
+// ----------------------------------------------------------------------------------------------------------------
+
+
+// cipher SPECK -- 128 bit block size -- 128 bit key size -- ECB mode
+// follows endianess rules as used in official implementation guide and NOT as in original 2013 cipher presentation
+// used for IV in header encryption (one block) and challenge encryption (user/password)
+// for now: just plain C -- probably no need for AVX, SSE, NEON
+
+
+int speck_128_decrypt (unsigned char *inout, speck_context_t *ctx);
+
+int speck_128_encrypt (unsigned char *inout, speck_context_t *ctx);
+
+
+#endif // SPECK_H