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/* nettle, low-level cryptographics library
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* Copyright (C) 2013 Niels Möller
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* The nettle library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or (at your
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* option) any later version.
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* The nettle library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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* License for more details.
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* You should have received a copy of the GNU Lesser General Public License
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* along with the nettle library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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_umac_nh (const uint32_t *key, unsigned length, const uint8_t *msg)
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assert (length <= 1024);
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assert (length % 32 == 0);
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for (y = 0; length > 0; length -= 32, msg += 32, key += 8)
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a = LE_READ_UINT32 (msg) + key[0];
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b = LE_READ_UINT32 (msg + 16) + key[4];
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y += (uint64_t) a * b;
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a = LE_READ_UINT32 (msg + 4) + key[1];
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b = LE_READ_UINT32 (msg + 20) + key[5];
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y += (uint64_t) a * b;
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a = LE_READ_UINT32 (msg + 8) + key[2];
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b = LE_READ_UINT32 (msg + 24) + key[6];
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y += (uint64_t) a * b;
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a = LE_READ_UINT32 (msg + 12) + key[3];
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b = LE_READ_UINT32 (msg + 28) + key[7];
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y += (uint64_t) a * b;