38 lines
1.4 KiB
C
38 lines
1.4 KiB
C
/* PowerPC optimization for ChaCha20.
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Copyright (C) 2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <stdbool.h>
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#include <ldsodefs.h>
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unsigned int __chacha20_power8_blocks4 (uint32_t *state, uint8_t *dst,
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const uint8_t *src, size_t nblks)
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attribute_hidden;
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static void
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chacha20_crypt (uint32_t *state, uint8_t *dst,
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const uint8_t *src, size_t bytes)
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{
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_Static_assert (CHACHA20_BUFSIZE % 4 == 0,
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"CHACHA20_BUFSIZE not multiple of 4");
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_Static_assert (CHACHA20_BUFSIZE >= CHACHA20_BLOCK_SIZE * 4,
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"CHACHA20_BUFSIZE < CHACHA20_BLOCK_SIZE * 4");
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__chacha20_power8_blocks4 (state, dst, src,
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CHACHA20_BUFSIZE / CHACHA20_BLOCK_SIZE);
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}
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