/* =================================================================== * * Copyright (c) 2014, Legrandin * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. 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. * * 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 HOLDER 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 "pycrypto_common.h" #define F_ROUNDS 10 #define MAX_DIGEST_BYTES 32 #define MAX_KEY_BYTES 32 #define BLAKE2_WORD_SIZE 32 #define G_R1 16 #define G_R2 12 #define G_R3 8 #define G_R4 7 typedef uint32_t blake2_word; static const uint32_t iv[8] = { 0x6A09E667, 0xBB67AE85, 0x3C6EF372, 0xA54FF53A, 0x510E527F, 0x9B05688C, 0x1F83D9AB, 0x5BE0CD19 }; static void byteswap(uint32_t *v) { union { uint32_t w; uint8_t b[4]; } x, y; x.w = *v; y.b[0] = x.b[3]; y.b[1] = x.b[2]; y.b[2] = x.b[1]; y.b[3] = x.b[0]; *v = y.w; } #define blake2_init blake2s_init #define blake2_copy blake2s_copy #define blake2_destroy blake2s_destroy #define blake2_digest blake2s_digest #define blake2_update blake2s_update FAKE_INIT(BLAKE2s) #include "blake2.c"