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-rw-r--r--src/lib/CMakeLists.txt1
-rw-r--r--src/lib/byte_order.h194
-rw-r--r--src/lib/list.c4
-rw-r--r--src/lib/sha3.c323
-rw-r--r--src/lib/sha3.h85
5 files changed, 605 insertions, 2 deletions
diff --git a/src/lib/CMakeLists.txt b/src/lib/CMakeLists.txt
index f5273904..688cf6f5 100644
--- a/src/lib/CMakeLists.txt
+++ b/src/lib/CMakeLists.txt
@@ -38,6 +38,7 @@ set(SOURCE_FILES
lockfile.c
logs.c
nsm.c
+ sha3.c
shm_flow_set.c
shm_rbuff.c
shm_rdrbuff.c
diff --git a/src/lib/byte_order.h b/src/lib/byte_order.h
new file mode 100644
index 00000000..9ee082af
--- /dev/null
+++ b/src/lib/byte_order.h
@@ -0,0 +1,194 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2017
+ *
+ * Byte order routines for SHA3 function
+ *
+ * Dimitri Staessens <dimitri.staessens@intec.ugent.be>
+ *
+ * This implementation is adapted and redistributed from the RHASH
+ * project
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * version 2.1 as published by the Free Software Foundation.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+/*
+ * byte_order.h - byte order related platform dependent routines,
+ *
+ * Copyright: 2008-2012 Aleksey Kravchenko <rhash.admin@gmail.com>
+ *
+ * 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.
+ *
+ * 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. Use this program at your own risk!
+ */
+
+/* byte_order.h */
+#ifndef OUROBOROS_BYTE_ORDER_H
+#define OUROBOROS_BYTE_ORDER_H
+
+#include <stdint.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#ifdef __GLIBC__
+# include <endian.h>
+#endif
+
+/* if x86 compatible cpu */
+#if defined(i386) || defined(__i386__) || defined(__i486__) || \
+ defined(__i586__) || defined(__i686__) || defined(__pentium__) || \
+ defined(__pentiumpro__) || defined(__pentium4__) || \
+ defined(__nocona__) || defined(prescott) || defined(__core2__) || \
+ defined(__k6__) || defined(__k8__) || defined(__athlon__) || \
+ defined(__amd64) || defined(__amd64__) || \
+ defined(__x86_64) || defined(__x86_64__) || defined(_M_IX86) || \
+ defined(_M_AMD64) || defined(_M_IA64) || defined(_M_X64)
+/* detect if x86-64 instruction set is supported */
+# if defined(_LP64) || defined(__LP64__) || defined(__x86_64) || \
+ defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64)
+# define CPU_X64
+# else
+# define CPU_IA32
+# endif
+#endif
+
+/* detect CPU endianness */
+#if (defined(__BYTE_ORDER) && defined(__LITTLE_ENDIAN) && \
+ __BYTE_ORDER == __LITTLE_ENDIAN) || \
+ defined(CPU_IA32) || defined(CPU_X64) || \
+ defined(__ia64) || defined(__ia64__) || defined(__alpha__) || \
+ defined(_M_ALPHA) || defined(vax) || defined(MIPSEL) || \
+ defined(_ARM_) || defined(__arm__)
+#define CPU_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN 0
+#define IS_LITTLE_ENDIAN 1
+#elif (defined(__BYTE_ORDER) && defined(__BIG_ENDIAN) && \
+ __BYTE_ORDER == __BIG_ENDIAN) || \
+ defined(__sparc) || defined(__sparc__) || defined(sparc) || \
+ defined(_ARCH_PPC) || defined(_ARCH_PPC64) || defined(_POWER) || \
+ defined(__POWERPC__) || defined(POWERPC) || defined(__powerpc) || \
+ defined(__powerpc__) || defined(__powerpc64__) || defined(__ppc__) || \
+ defined(__hpux) || defined(_MIPSEB) || defined(mc68000) || \
+ defined(__s390__) || defined(__s390x__) || defined(sel)
+#define CPU_BIG_ENDIAN
+#define IS_BIG_ENDIAN 1
+#define IS_LITTLE_ENDIAN 0
+#else
+# error "Can't detect CPU architecture."
+#endif
+
+#define IS_ALIGNED_32(p) (0 == (3 & ((const char*)(p) - (const char*)0)))
+#define IS_ALIGNED_64(p) (0 == (7 & ((const char*)(p) - (const char*)0)))
+
+#if defined(__GNUC__)
+#define ALIGN_ATTR(n) __attribute__((aligned (n)))
+#else
+#define ALIGN_ATTR(n) /* nothing */
+#endif
+
+#define I64(x) x##LL
+
+/* convert a hash flag to index */
+#if __GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) /* GCC < 3.4 */
+#define rhash_ctz(x) __builtin_ctz(x)
+#else
+unsigned rhash_ctz(unsigned); /* define as function */
+#endif
+
+#if defined(__GNUC__) && (__GNUC__ >= 4) && \
+ (__GNUC__ > 4 || __GNUC_MINOR__ >= 3)
+/* for GCC >= 4.3 */
+#define bswap_32(x) __builtin_bswap32(x)
+#elif !defined(__STRICT_ANSI__)
+/* general bswap_32 definition */
+static inline uint32_t bswap_32(uint32_t x) {
+ x = ((x << 8) & 0xFF00FF00) | ((x >> 8) & 0x00FF00FF);
+ return (x >> 16) | (x << 16);
+}
+#else
+#define bswap_32(x) ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \
+ (((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24))
+#endif /* bswap_32 */
+
+#if defined(__GNUC__) && (__GNUC__ >= 4) && \
+ (__GNUC__ > 4 || __GNUC_MINOR__ >= 3)
+#define bswap_64(x) __builtin_bswap64(x)
+#elif !defined(__STRICT_ANSI__)
+static inline uint64_t bswap_64(uint64_t x) {
+ union {
+ uint64_t ll;
+ uint32_t l[2];
+ } w, r;
+ w.ll = x;
+ r.l[0] = bswap_32(w.l[1]);
+ r.l[1] = bswap_32(w.l[0]);
+ return r.ll;
+}
+#else
+#error "bswap_64 unsupported"
+#endif
+
+#ifdef CPU_BIG_ENDIAN
+#define be2me_32(x) (x)
+#define be2me_64(x) (x)
+#define le2me_32(x) bswap_32(x)
+#define le2me_64(x) bswap_64(x)
+
+#define be32_copy(to, index, from, length) \
+ memcpy((to) + (index), (from), (length))
+#define le32_copy(to, index, from, length) \
+ rhash_swap_copy_str_to_u32((to), (index), (from), (length))
+#define be64_copy(to, index, from, length) \
+ memcpy((to) + (index), (from), (length))
+#define le64_copy(to, index, from, length) \
+ rhash_swap_copy_str_to_u64((to), (index), (from), (length))
+#define me64_to_be_str(to, from, length) \
+ memcpy((to), (from), (length))
+#define me64_to_le_str(to, from, length) \
+ rhash_swap_copy_u64_to_str((to), (from), (length))
+
+#else /* CPU_BIG_ENDIAN */
+#define be2me_32(x) bswap_32(x)
+#define be2me_64(x) bswap_64(x)
+#define le2me_32(x) (x)
+#define le2me_64(x) (x)
+
+#define be32_copy(to, index, from, length) \
+ rhash_swap_copy_str_to_u32((to), (index), (from), (length))
+#define le32_copy(to, index, from, length) \
+ memcpy((to) + (index), (from), (length))
+#define be64_copy(to, index, from, length) \
+ rhash_swap_copy_str_to_u64((to), (index), (from), (length))
+#define le64_copy(to, index, from, length) \
+ memcpy((to) + (index), (from), (length))
+#define me64_to_be_str(to, from, length) \
+ rhash_swap_copy_u64_to_str((to), (from), (length))
+#define me64_to_le_str(to, from, length) \
+ memcpy((to), (from), (length))
+#endif /* CPU_BIG_ENDIAN */
+
+/* ROTL/ROTR macros rotate a 32/64-bit word left/right by n bits */
+#define ROTL32(dword, n) ((dword) << (n) ^ ((dword) >> (32 - (n))))
+#define ROTR32(dword, n) ((dword) >> (n) ^ ((dword) << (32 - (n))))
+#define ROTL64(qword, n) ((qword) << (n) ^ ((qword) >> (64 - (n))))
+#define ROTR64(qword, n) ((qword) >> (n) ^ ((qword) << (64 - (n))))
+
+#endif /* OUROBOROS_BYTE_ORDER_H */
diff --git a/src/lib/list.c b/src/lib/list.c
index 2c577ea9..908d3b71 100644
--- a/src/lib/list.c
+++ b/src/lib/list.c
@@ -3,8 +3,8 @@
*
* Simple doubly linked list implementation.
*
- * Sander Vrijders <sander.vrijders@intec.ugent.be>
- * Dimitri Staessense <dimitri.staessens@intec.ugent.be>
+ * Sander Vrijders <sander.vrijders@intec.ugent.be>
+ * Dimitri Staessens <dimitri.staessens@intec.ugent.be>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
diff --git a/src/lib/sha3.c b/src/lib/sha3.c
new file mode 100644
index 00000000..4d9b9b8c
--- /dev/null
+++ b/src/lib/sha3.c
@@ -0,0 +1,323 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2017
+ *
+ * SHA3 algorithm
+ *
+ * This implementation is adapted and redistributed from the RHASH
+ * project
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * version 2.1 as published by the Free Software Foundation.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+/* sha3.c - an implementation of Secure Hash Algorithm 3 (Keccak).
+ * based on the
+ * The Keccak SHA-3 submission. Submission to NIST (Round 3), 2011
+ * by Guido Bertoni, Joan Daemen, Michaël Peeters and Gilles Van Assche
+ *
+ * Copyright: 2013 Aleksey Kravchenko <rhash.admin@gmail.com>
+ *
+ * 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.
+ *
+ * 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. Use this program at your own risk!
+ */
+
+#include <assert.h>
+#include <string.h>
+
+#include "sha3.h"
+#include "byte_order.h"
+
+#define NumberOfRounds 24
+
+/* SHA3 (Keccak) constants for 24 rounds */
+static uint64_t keccak_round_constants[NumberOfRounds] = {
+ I64(0x0000000000000001), I64(0x0000000000008082),
+ I64(0x800000000000808A), I64(0x8000000080008000),
+ I64(0x000000000000808B), I64(0x0000000080000001),
+ I64(0x8000000080008081), I64(0x8000000000008009),
+ I64(0x000000000000008A), I64(0x0000000000000088),
+ I64(0x0000000080008009), I64(0x000000008000000A),
+ I64(0x000000008000808B), I64(0x800000000000008B),
+ I64(0x8000000000008089), I64(0x8000000000008003),
+ I64(0x8000000000008002), I64(0x8000000000000080),
+ I64(0x000000000000800A), I64(0x800000008000000A),
+ I64(0x8000000080008081), I64(0x8000000000008080),
+ I64(0x0000000080000001), I64(0x8000000080008008)
+};
+
+static void rhash_keccak_init(struct sha3_ctx * ctx,
+ unsigned bits)
+{
+ /* NB: The Keccak capacity parameter = bits * 2 */
+ unsigned rate = 1600 - bits * 2;
+
+ memset(ctx, 0, sizeof(struct sha3_ctx));
+ ctx->block_size = rate / 8;
+ assert(rate <= 1600 && (rate % 64) == 0);
+}
+
+void rhash_sha3_224_init(struct sha3_ctx * ctx)
+{
+ rhash_keccak_init(ctx, 224);
+}
+
+void rhash_sha3_256_init(struct sha3_ctx * ctx)
+{
+ rhash_keccak_init(ctx, 256);
+}
+void rhash_sha3_384_init(struct sha3_ctx * ctx)
+{
+ rhash_keccak_init(ctx, 384);
+}
+
+void rhash_sha3_512_init(struct sha3_ctx * ctx)
+{
+ rhash_keccak_init(ctx, 512);
+}
+
+static void keccak_theta(uint64_t * A)
+{
+ unsigned int x;
+ uint64_t C[5];
+ uint64_t D[5];
+
+ for (x = 0; x < 5; x++)
+ C[x] = A[x] ^ A[x + 5] ^ A[x + 10] ^ A[x + 15] ^ A[x + 20];
+
+ D[0] = ROTL64(C[1], 1) ^ C[4];
+ D[1] = ROTL64(C[2], 1) ^ C[0];
+ D[2] = ROTL64(C[3], 1) ^ C[1];
+ D[3] = ROTL64(C[4], 1) ^ C[2];
+ D[4] = ROTL64(C[0], 1) ^ C[3];
+
+ for (x = 0; x < 5; x++) {
+ A[x] ^= D[x];
+ A[x + 5] ^= D[x];
+ A[x + 10] ^= D[x];
+ A[x + 15] ^= D[x];
+ A[x + 20] ^= D[x];
+ }
+}
+
+static void keccak_pi(uint64_t * A)
+{
+ uint64_t A1;
+ A1 = A[1];
+ A[ 1] = A[ 6];
+ A[ 6] = A[ 9];
+ A[ 9] = A[22];
+ A[22] = A[14];
+ A[14] = A[20];
+ A[20] = A[ 2];
+ A[ 2] = A[12];
+ A[12] = A[13];
+ A[13] = A[19];
+ A[19] = A[23];
+ A[23] = A[15];
+ A[15] = A[ 4];
+ A[ 4] = A[24];
+ A[24] = A[21];
+ A[21] = A[ 8];
+ A[ 8] = A[16];
+ A[16] = A[ 5];
+ A[ 5] = A[ 3];
+ A[ 3] = A[18];
+ A[18] = A[17];
+ A[17] = A[11];
+ A[11] = A[ 7];
+ A[ 7] = A[10];
+ A[10] = A1;
+ /* note: A[ 0] is left as is */
+}
+
+static void keccak_chi(uint64_t * A)
+{
+ int i;
+ for (i = 0; i < 25; i += 5) {
+ uint64_t A0 = A[0 + i];
+ uint64_t A1 = A[1 + i];
+ A[0 + i] ^= ~A1 & A[2 + i];
+ A[1 + i] ^= ~A[2 + i] & A[3 + i];
+ A[2 + i] ^= ~A[3 + i] & A[4 + i];
+ A[3 + i] ^= ~A[4 + i] & A0;
+ A[4 + i] ^= ~A0 & A1;
+ }
+}
+
+static void rhash_sha3_permutation(uint64_t * state)
+{
+ int round;
+ for (round = 0; round < NumberOfRounds; round++) {
+ keccak_theta(state);
+ /* apply Keccak rho() transformation */
+ state[ 1] = ROTL64(state[ 1], 1);
+ state[ 2] = ROTL64(state[ 2], 62);
+ state[ 3] = ROTL64(state[ 3], 28);
+ state[ 4] = ROTL64(state[ 4], 27);
+ state[ 5] = ROTL64(state[ 5], 36);
+ state[ 6] = ROTL64(state[ 6], 44);
+ state[ 7] = ROTL64(state[ 7], 6);
+ state[ 8] = ROTL64(state[ 8], 55);
+ state[ 9] = ROTL64(state[ 9], 20);
+ state[10] = ROTL64(state[10], 3);
+ state[11] = ROTL64(state[11], 10);
+ state[12] = ROTL64(state[12], 43);
+ state[13] = ROTL64(state[13], 25);
+ state[14] = ROTL64(state[14], 39);
+ state[15] = ROTL64(state[15], 41);
+ state[16] = ROTL64(state[16], 45);
+ state[17] = ROTL64(state[17], 15);
+ state[18] = ROTL64(state[18], 21);
+ state[19] = ROTL64(state[19], 8);
+ state[20] = ROTL64(state[20], 18);
+ state[21] = ROTL64(state[21], 2);
+ state[22] = ROTL64(state[22], 61);
+ state[23] = ROTL64(state[23], 56);
+ state[24] = ROTL64(state[24], 14);
+
+ keccak_pi(state);
+ keccak_chi(state);
+
+ /* apply iota(state, round) */
+ *state ^= keccak_round_constants[round];
+ }
+}
+
+static void rhash_sha3_process_block(uint64_t hash[25],
+ const uint64_t * block,
+ size_t block_size)
+{
+ /* expanded loop */
+ hash[ 0] ^= le2me_64(block[ 0]);
+ hash[ 1] ^= le2me_64(block[ 1]);
+ hash[ 2] ^= le2me_64(block[ 2]);
+ hash[ 3] ^= le2me_64(block[ 3]);
+ hash[ 4] ^= le2me_64(block[ 4]);
+ hash[ 5] ^= le2me_64(block[ 5]);
+ hash[ 6] ^= le2me_64(block[ 6]);
+ hash[ 7] ^= le2me_64(block[ 7]);
+ hash[ 8] ^= le2me_64(block[ 8]);
+ /* if not sha3-512 */
+ if (block_size > 72) {
+ hash[ 9] ^= le2me_64(block[ 9]);
+ hash[10] ^= le2me_64(block[10]);
+ hash[11] ^= le2me_64(block[11]);
+ hash[12] ^= le2me_64(block[12]);
+ /* if not sha3-384 */
+ if (block_size > 104) {
+ hash[13] ^= le2me_64(block[13]);
+ hash[14] ^= le2me_64(block[14]);
+ hash[15] ^= le2me_64(block[15]);
+ hash[16] ^= le2me_64(block[16]);
+ /* if not sha3-256 */
+ if (block_size > 136) {
+ hash[17] ^= le2me_64(block[17]);
+#ifdef FULL_SHA3_FAMILY_SUPPORT
+ /* if not sha3-224 */
+ if (block_size > 144) {
+ hash[18] ^= le2me_64(block[18]);
+ hash[19] ^= le2me_64(block[19]);
+ hash[20] ^= le2me_64(block[20]);
+ hash[21] ^= le2me_64(block[21]);
+ hash[22] ^= le2me_64(block[22]);
+ hash[23] ^= le2me_64(block[23]);
+ hash[24] ^= le2me_64(block[24]);
+ }
+#endif
+ }
+ }
+ }
+ /* make a permutation of the hash */
+ rhash_sha3_permutation(hash);
+}
+
+#define SHA3_FINALIZED 0x80000000
+
+void rhash_sha3_update(struct sha3_ctx * ctx,
+ const uint8_t * msg,
+ size_t size)
+{
+ size_t idx = (size_t) ctx->rest;
+ size_t block_size = (size_t) ctx->block_size;
+
+ if (ctx->rest & SHA3_FINALIZED) return;
+ ctx->rest = (unsigned) ((ctx->rest + size) % block_size);
+
+ /* fill partial block */
+ if (idx) {
+ size_t left = block_size - idx;
+ memcpy((uint8_t *) ctx->message + idx, msg,
+ (size < left ? size : left));
+ if (size < left) return;
+
+ /* process partial block */
+ rhash_sha3_process_block(ctx->hash, ctx->message, block_size);
+ msg += left;
+ size -= left;
+ }
+
+ while (size >= block_size) {
+ uint64_t * aligned_message_block;
+ if (IS_ALIGNED_64(msg)) {
+ /*
+ * the most common case is processing of an already
+ * aligned message without copying it
+ */
+ aligned_message_block = (uint64_t *) msg;
+ } else {
+ memcpy(ctx->message, msg, block_size);
+ aligned_message_block = ctx->message;
+ }
+
+ rhash_sha3_process_block(ctx->hash, aligned_message_block,
+ block_size);
+ msg += block_size;
+ size -= block_size;
+ }
+
+ if (size)
+ memcpy(ctx->message, msg, size);
+}
+
+void rhash_sha3_final(struct sha3_ctx * ctx,
+ uint8_t * res)
+{
+ size_t digest_length = 100 - ctx->block_size / 2;
+ const size_t block_size = ctx->block_size;
+
+ if (!(ctx->rest & SHA3_FINALIZED)) {
+ /* clear the rest of the data queue */
+ memset((uint8_t *) ctx->message + ctx->rest, 0,
+ block_size - ctx->rest);
+ ((uint8_t *) ctx->message)[ctx->rest] |= 0x06;
+ ((uint8_t *) ctx->message)[block_size - 1] |= 0x80;
+
+ /* process final block */
+ rhash_sha3_process_block(ctx->hash, ctx->message, block_size);
+ ctx->rest = SHA3_FINALIZED;
+ }
+
+ assert(block_size > digest_length);
+
+ if (res != NULL)
+ me64_to_le_str(res, ctx->hash, digest_length);
+}
diff --git a/src/lib/sha3.h b/src/lib/sha3.h
new file mode 100644
index 00000000..413228a2
--- /dev/null
+++ b/src/lib/sha3.h
@@ -0,0 +1,85 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2017
+ *
+ * SHA3 algorithm
+ *
+ * Dimitri Staessens <dimitri.staessens@intec.ugent.be>
+ *
+ * This implementation is adapted and redistributed from the RHASH
+ * project implementation of the sha3 algorithm
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * version 2.1 as published by the Free Software Foundation.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ * -- original license
+ *
+ * sha3.c - an implementation of Secure Hash Algorithm 3 (Keccak).
+ * based on the
+ * The Keccak SHA-3 submission. Submission to NIST (Round 3), 2011
+ * by Guido Bertoni, Joan Daemen, Michaël Peeters and Gilles Van Assche
+ *
+ * Copyright: 2013 Aleksey Kravchenko <rhash.admin@gmail.com>
+ *
+ * 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.
+ *
+ * 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. Use this program at your own risk!
+ */
+
+#ifndef OUROBOROS_LIB_SHA3_H
+#define OUROBOROS_LIB_SHA3_H
+
+#include <unistd.h>
+#include <stdint.h>
+
+#define sha3_224_hash_size 28
+#define sha3_256_hash_size 32
+#define sha3_384_hash_size 48
+#define sha3_512_hash_size 64
+#define sha3_max_permutation_size 25
+#define sha3_max_rate_in_qwords 24
+
+struct sha3_ctx {
+ /* 1600 bits algorithm hashing state */
+ uint64_t hash[sha3_max_permutation_size];
+ /* 1536-bit buffer for leftovers */
+ uint64_t message[sha3_max_rate_in_qwords];
+ /* count of bytes in the message[] buffer */
+ unsigned rest;
+ /* size of a message block processed at once */
+ unsigned block_size;
+};
+
+void rhash_sha3_224_init(struct sha3_ctx * ctx);
+
+void rhash_sha3_256_init(struct sha3_ctx * ctx);
+
+void rhash_sha3_384_init(struct sha3_ctx * ctx);
+
+void rhash_sha3_512_init(struct sha3_ctx * ctx);
+
+void rhash_sha3_update(struct sha3_ctx * ctx,
+ const uint8_t * msg,
+ size_t size);
+
+void rhash_sha3_final(struct sha3_ctx * ctx,
+ uint8_t * res);
+
+#endif /* OUROBOROS_LIB_SHA3_H */
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