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23 lines
462 B
23 lines
462 B
/**
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* Author......: See docs/credits.txt
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* License.....: MIT
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*/
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#include "inc_vendor.h"
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#include "inc_types.h"
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#include "inc_platform.h"
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#include "inc_common.h"
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#include "inc_luks_xts.h"
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DECLSPEC void xts_mul2 (PRIVATE_AS u32 *in, PRIVATE_AS u32 *out)
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{
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const u32 c = in[3] >> 31;
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out[3] = (in[3] << 1) | (in[2] >> 31);
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out[2] = (in[2] << 1) | (in[1] >> 31);
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out[1] = (in[1] << 1) | (in[0] >> 31);
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out[0] = (in[0] << 1);
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out[0] ^= c * 0x87;
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}
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