1282 lines
35 KiB
C++
1282 lines
35 KiB
C++
/*
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* SOSEMANUK reference implementation.
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*
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* This code is supposed to run on any conforming C implementation (C90
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* or later). When compiled with the SOSEMANUK_VECTOR macro defined, this
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* is a stand-alone program which outputs detailed test vectors. When
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* compiled with the SOSEMANUK_SPEED macro defined, this is a stand-alone
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* program which performs an implementation speed measure.
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*
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* (c) 2005 X-CRYPT project. This software is provided 'as-is', without
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* any express or implied warranty. In no event will the authors be held
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* liable for any damages arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to no restriction.
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*
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* Technical remarks and questions can be addressed to
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* <thomas.pornin@cryptolog.com>
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef SOSEMANUK_SPEED
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#include <time.h>
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#endif
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#include "sosemanuk.h"
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/* ======================================================================== */
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#ifdef SOSEMANUK_ECRYPT
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/*
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* No local speed testing when using the ECRYPT mode.
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*/
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#undef SOSEMANUK_SPEED
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/*
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* If we are using the ECRYPT API, then we rely on the ECRYPT portability
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* macros and types.
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*/
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#define unum32 u32
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#define T32(x) U32V(x)
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#define decode32le(data) U8TO32_LITTLE(data)
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#define encode32le(dst, val) do { \
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u8 *encode_dst = (dst); \
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u32 encode_val = (val); \
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U32TO8_LITTLE(encode_dst, encode_val); \
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} while (0)
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#define ROTL(x, n) ROTL32(x, n)
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#define INLINE
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#else
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/*
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* 32-bit data decoding, little endian.
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*/
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static INLINE unum32
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decode32le(unsigned char *data)
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{
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#ifdef __i386
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/*
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* On i386, we prefer accessing data directly. Unaligned accesses
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* imply only a one-cycle penalty; even with that penalty, this
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* method is quite faster than the generic one. Note that i486
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* and later may be set in a mode where unaligned access trigger
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* exceptions; but such a mode is not compatible with usual ABI
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* (which require only 4-byte alignment for "double" and "long
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* double", hence operating systems do not set that "alignment
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* check" flag.
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*
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* If this optimized access proves to be a problem, replace the
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* test above by "#if 0".
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*/
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return *(unum32 *)data;
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#else
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return (unum32)data[0]
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| ((unum32)data[1] << 8)
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| ((unum32)data[2] << 16)
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| ((unum32)data[3] << 24);
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#endif
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}
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/*
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* 32-bit data encoding, little-endian.
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*/
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static INLINE void
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encode32le(unsigned char *dst, unum32 val)
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{
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#ifdef __i386__
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/*
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* Optimized version for i386. See comments in decode32le().
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*/
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*(unum32 *)dst = val;
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#else
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dst[0] = val & 0xFF;
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dst[1] = (val >> 8) & 0xFF;
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dst[2] = (val >> 16) & 0xFF;
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dst[3] = (val >> 24) & 0xFF;
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#endif
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}
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/*
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* Left-rotation by n bits (0 < n < 32).
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*/
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#define ROTL(x, n) (T32(((x) << (n)) | T32((x) >> (32 - (n)))))
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#endif
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/* ======================================================================== */
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/*
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* Serpent S-boxes, implemented in bitslice mode. These circuits have
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* been published by Dag Arne Osvik ("Speeding up Serpent", published in
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* the 3rd AES Candidate Conference) and work on five 32-bit registers:
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* the four inputs, and a fifth scratch register. There are meant to be
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* quite fast on Pentium-class processors. These are not the fastest
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* published, but they are "fast enough" and they are unencumbered as
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* far as intellectual property is concerned (note: these are rewritten
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* from the article itself, and hence are not covered by the GPL on
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* Dag's code, which was not used here).
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*
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* The output bits are permuted. Here is the correspondance:
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* S0: 1420
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* S1: 2031
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* S2: 2314
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* S3: 1234
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* S4: 1403
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* S5: 1302
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* S6: 0142
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* S7: 4310
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* (for instance, the output of S0 is in "r1, r4, r2, r0").
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*/
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#define S0(r0, r1, r2, r3, r4) do { \
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r3 ^= r0; r4 = r1; \
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r1 &= r3; r4 ^= r2; \
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r1 ^= r0; r0 |= r3; \
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r0 ^= r4; r4 ^= r3; \
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r3 ^= r2; r2 |= r1; \
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r2 ^= r4; r4 = ~r4; \
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r4 |= r1; r1 ^= r3; \
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r1 ^= r4; r3 |= r0; \
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r1 ^= r3; r4 ^= r3; \
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} while (0)
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#define S1(r0, r1, r2, r3, r4) do { \
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r0 = ~r0; r2 = ~r2; \
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r4 = r0; r0 &= r1; \
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r2 ^= r0; r0 |= r3; \
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r3 ^= r2; r1 ^= r0; \
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r0 ^= r4; r4 |= r1; \
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r1 ^= r3; r2 |= r0; \
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r2 &= r4; r0 ^= r1; \
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r1 &= r2; \
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r1 ^= r0; r0 &= r2; \
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r0 ^= r4; \
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} while (0)
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#define S2(r0, r1, r2, r3, r4) do { \
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r4 = r0; r0 &= r2; \
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r0 ^= r3; r2 ^= r1; \
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r2 ^= r0; r3 |= r4; \
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r3 ^= r1; r4 ^= r2; \
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r1 = r3; r3 |= r4; \
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r3 ^= r0; r0 &= r1; \
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r4 ^= r0; r1 ^= r3; \
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r1 ^= r4; r4 = ~r4; \
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} while (0)
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#define S3(r0, r1, r2, r3, r4) do { \
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r4 = r0; r0 |= r3; \
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r3 ^= r1; r1 &= r4; \
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r4 ^= r2; r2 ^= r3; \
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r3 &= r0; r4 |= r1; \
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r3 ^= r4; r0 ^= r1; \
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r4 &= r0; r1 ^= r3; \
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r4 ^= r2; r1 |= r0; \
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r1 ^= r2; r0 ^= r3; \
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r2 = r1; r1 |= r3; \
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r1 ^= r0; \
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} while (0)
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#define S4(r0, r1, r2, r3, r4) do { \
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r1 ^= r3; r3 = ~r3; \
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r2 ^= r3; r3 ^= r0; \
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r4 = r1; r1 &= r3; \
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r1 ^= r2; r4 ^= r3; \
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r0 ^= r4; r2 &= r4; \
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r2 ^= r0; r0 &= r1; \
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r3 ^= r0; r4 |= r1; \
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r4 ^= r0; r0 |= r3; \
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r0 ^= r2; r2 &= r3; \
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r0 = ~r0; r4 ^= r2; \
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} while (0)
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#define S5(r0, r1, r2, r3, r4) do { \
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r0 ^= r1; r1 ^= r3; \
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r3 = ~r3; r4 = r1; \
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r1 &= r0; r2 ^= r3; \
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r1 ^= r2; r2 |= r4; \
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r4 ^= r3; r3 &= r1; \
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r3 ^= r0; r4 ^= r1; \
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r4 ^= r2; r2 ^= r0; \
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r0 &= r3; r2 = ~r2; \
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r0 ^= r4; r4 |= r3; \
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r2 ^= r4; \
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} while (0)
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#define S6(r0, r1, r2, r3, r4) do { \
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r2 = ~r2; r4 = r3; \
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r3 &= r0; r0 ^= r4; \
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r3 ^= r2; r2 |= r4; \
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r1 ^= r3; r2 ^= r0; \
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r0 |= r1; r2 ^= r1; \
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r4 ^= r0; r0 |= r3; \
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r0 ^= r2; r4 ^= r3; \
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r4 ^= r0; r3 = ~r3; \
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r2 &= r4; \
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r2 ^= r3; \
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} while (0)
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#define S7(r0, r1, r2, r3, r4) do { \
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r4 = r1; r1 |= r2; \
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r1 ^= r3; r4 ^= r2; \
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r2 ^= r1; r3 |= r4; \
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r3 &= r0; r4 ^= r2; \
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r3 ^= r1; r1 |= r4; \
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r1 ^= r0; r0 |= r4; \
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r0 ^= r2; r1 ^= r4; \
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r2 ^= r1; r1 &= r0; \
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r1 ^= r4; r2 = ~r2; \
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r2 |= r0; \
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r4 ^= r2; \
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} while (0)
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/*
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* The Serpent linear transform.
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*/
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#define SERPENT_LT(x0, x1, x2, x3) do { \
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x0 = ROTL(x0, 13); \
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x2 = ROTL(x2, 3); \
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x1 = x1 ^ x0 ^ x2; \
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x3 = x3 ^ x2 ^ T32(x0 << 3); \
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x1 = ROTL(x1, 1); \
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x3 = ROTL(x3, 7); \
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x0 = x0 ^ x1 ^ x3; \
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x2 = x2 ^ x3 ^ T32(x1 << 7); \
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x0 = ROTL(x0, 5); \
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x2 = ROTL(x2, 22); \
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} while (0)
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/* ======================================================================== */
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#ifdef SOSEMANUK_ECRYPT
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void
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ECRYPT_init(void)
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{
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return;
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}
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#endif
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#ifdef SOSEMANUK_ECRYPT
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void
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ECRYPT_keysetup(ECRYPT_ctx *kc, const u8 *key, u32 keysize, u32 ivsize)
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#else
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/* see sosemanuk.h */
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void
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sosemanuk_schedule(sosemanuk_key_context *kc,
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unsigned char *key, size_t key_len)
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#endif
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{
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/*
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* This key schedule is actually a truncated Serpent key schedule.
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* The key-derived words (w_i) are computed within the eight
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* local variables w0 to w7, which are reused again and again.
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*/
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#define SKS(S, o0, o1, o2, o3, d0, d1, d2, d3) do { \
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unum32 r0, r1, r2, r3, r4; \
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r0 = w ## o0; \
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r1 = w ## o1; \
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r2 = w ## o2; \
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r3 = w ## o3; \
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S(r0, r1, r2, r3, r4); \
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kc->sk[i ++] = r ## d0; \
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kc->sk[i ++] = r ## d1; \
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kc->sk[i ++] = r ## d2; \
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kc->sk[i ++] = r ## d3; \
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} while (0)
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#define SKS0 SKS(S0, 4, 5, 6, 7, 1, 4, 2, 0)
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#define SKS1 SKS(S1, 0, 1, 2, 3, 2, 0, 3, 1)
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#define SKS2 SKS(S2, 4, 5, 6, 7, 2, 3, 1, 4)
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#define SKS3 SKS(S3, 0, 1, 2, 3, 1, 2, 3, 4)
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#define SKS4 SKS(S4, 4, 5, 6, 7, 1, 4, 0, 3)
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#define SKS5 SKS(S5, 0, 1, 2, 3, 1, 3, 0, 2)
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#define SKS6 SKS(S6, 4, 5, 6, 7, 0, 1, 4, 2)
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#define SKS7 SKS(S7, 0, 1, 2, 3, 4, 3, 1, 0)
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#define WUP(wi, wi5, wi3, wi1, cc) do { \
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unum32 tt = (wi) ^ (wi5) ^ (wi3) \
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^ (wi1) ^ (0x9E3779B9 ^ (unum32)(cc)); \
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(wi) = ROTL(tt, 11); \
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} while (0)
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#define WUP0(cc) do { \
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WUP(w0, w3, w5, w7, cc); \
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WUP(w1, w4, w6, w0, cc + 1); \
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WUP(w2, w5, w7, w1, cc + 2); \
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WUP(w3, w6, w0, w2, cc + 3); \
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} while (0)
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#define WUP1(cc) do { \
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WUP(w4, w7, w1, w3, cc); \
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WUP(w5, w0, w2, w4, cc + 1); \
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WUP(w6, w1, w3, w5, cc + 2); \
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WUP(w7, w2, w4, w6, cc + 3); \
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} while (0)
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unsigned char wbuf[32];
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register unum32 w0, w1, w2, w3, w4, w5, w6, w7;
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int i = 0;
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#ifdef SOSEMANUK_ECRYPT
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size_t key_len = keysize / 8;
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kc->ivlen = ivsize / 8;
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#endif
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/*
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* The key is copied into the wbuf[] buffer and padded to 256 bits
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* as described in the Serpent specification.
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*/
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if (key_len == 0 || key_len > 32) {
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fprintf(stderr, "invalid key size: %lu\n",
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(unsigned long)key_len);
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exit(EXIT_FAILURE);
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}
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memcpy(wbuf, key, key_len);
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if (key_len < 32) {
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wbuf[key_len] = 0x01;
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if (key_len < 31)
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memset(wbuf + key_len + 1, 0, 31 - key_len);
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}
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#ifdef SOSEMANUK_VECTOR
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{
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size_t u;
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printf("key = ");
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for (u = 0; u < key_len; u ++)
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printf("%02X", key[u]);
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printf("\n");
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}
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#endif
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w0 = decode32le(wbuf);
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w1 = decode32le(wbuf + 4);
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w2 = decode32le(wbuf + 8);
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w3 = decode32le(wbuf + 12);
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w4 = decode32le(wbuf + 16);
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w5 = decode32le(wbuf + 20);
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w6 = decode32le(wbuf + 24);
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w7 = decode32le(wbuf + 28);
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#ifdef SOSEMANUK_VECTOR
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printf(" -> %08lX %08lX %08lX %08lX %08lX %08lX %08lX %08lX\n",
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(unsigned long)w7, (unsigned long)w6,
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(unsigned long)w5, (unsigned long)w4,
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(unsigned long)w3, (unsigned long)w2,
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(unsigned long)w1, (unsigned long)w0);
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#endif
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WUP0(0); SKS3;
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WUP1(4); SKS2;
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WUP0(8); SKS1;
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WUP1(12); SKS0;
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WUP0(16); SKS7;
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WUP1(20); SKS6;
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WUP0(24); SKS5;
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WUP1(28); SKS4;
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WUP0(32); SKS3;
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WUP1(36); SKS2;
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WUP0(40); SKS1;
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WUP1(44); SKS0;
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WUP0(48); SKS7;
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WUP1(52); SKS6;
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WUP0(56); SKS5;
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WUP1(60); SKS4;
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WUP0(64); SKS3;
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WUP1(68); SKS2;
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WUP0(72); SKS1;
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WUP1(76); SKS0;
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WUP0(80); SKS7;
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WUP1(84); SKS6;
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WUP0(88); SKS5;
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WUP1(92); SKS4;
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WUP0(96); SKS3;
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#ifdef SOSEMANUK_VECTOR
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{
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unsigned u;
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for (u = 0; u < 100; u += 4) {
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printf("Serpent24 subkey %2u:"
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" %08lX %08lX %08lX %08lX\n", u / 4,
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(unsigned long)kc->sk[u + 3],
|
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(unsigned long)kc->sk[u + 2],
|
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(unsigned long)kc->sk[u + 1],
|
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(unsigned long)kc->sk[u + 0]);
|
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}
|
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}
|
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#endif
|
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#undef SKS
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#undef SKS0
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#undef SKS1
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#undef SKS2
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#undef SKS3
|
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#undef SKS4
|
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#undef SKS5
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#undef SKS6
|
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#undef SKS7
|
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#undef WUP
|
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#undef WUP0
|
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#undef WUP1
|
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}
|
|
|
|
#ifdef SOSEMANUK_ECRYPT
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void
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ECRYPT_ivsetup(ECRYPT_ctx *ctx, const u8 *iv)
|
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#else
|
|
/* see sosemanuk.h */
|
|
void
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sosemanuk_init(sosemanuk_run_context *rc, sosemanuk_key_context *kc,
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unsigned char *iv, size_t iv_len)
|
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#endif
|
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{
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|
|
|
#ifdef SOSEMANUK_ECRYPT
|
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#define rc ctx
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#define kc ctx
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#define iv_len (ctx->ivlen)
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#endif
|
|
|
|
/*
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|
* The Serpent key addition step.
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|
*/
|
|
#define KA(zc, x0, x1, x2, x3) do { \
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x0 ^= kc->sk[(zc)]; \
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x1 ^= kc->sk[(zc) + 1]; \
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x2 ^= kc->sk[(zc) + 2]; \
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x3 ^= kc->sk[(zc) + 3]; \
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} while (0)
|
|
|
|
/*
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|
* One Serpent round.
|
|
* zc = current subkey counter
|
|
* S = S-box macro for this round
|
|
* i0 to i4 = input register numbers (the fifth is a scratch register)
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|
* o0 to o3 = output register numbers
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|
*/
|
|
#define FSS(zc, S, i0, i1, i2, i3, i4, o0, o1, o2, o3) do { \
|
|
KA(zc, r ## i0, r ## i1, r ## i2, r ## i3); \
|
|
S(r ## i0, r ## i1, r ## i2, r ## i3, r ## i4); \
|
|
SERPENT_LT(r ## o0, r ## o1, r ## o2, r ## o3); \
|
|
} while (0)
|
|
|
|
/*
|
|
* Last Serpent round. Contrary to the "true" Serpent, we keep
|
|
* the linear transformation for that last round.
|
|
*/
|
|
#define FSF(zc, S, i0, i1, i2, i3, i4, o0, o1, o2, o3) do { \
|
|
KA(zc, r ## i0, r ## i1, r ## i2, r ## i3); \
|
|
S(r ## i0, r ## i1, r ## i2, r ## i3, r ## i4); \
|
|
SERPENT_LT(r ## o0, r ## o1, r ## o2, r ## o3); \
|
|
KA(zc + 4, r ## o0, r ## o1, r ## o2, r ## o3); \
|
|
} while (0)
|
|
|
|
register unum32 r0, r1, r2, r3, r4;
|
|
unsigned char ivtmp[16];
|
|
|
|
if (iv_len >= sizeof ivtmp) {
|
|
memcpy(ivtmp, iv, sizeof ivtmp);
|
|
} else {
|
|
if (iv_len > 0)
|
|
memcpy(ivtmp, iv, iv_len);
|
|
memset(ivtmp + iv_len, 0, (sizeof ivtmp) - iv_len);
|
|
}
|
|
|
|
#ifdef SOSEMANUK_VECTOR
|
|
{
|
|
size_t u;
|
|
|
|
printf("IV = ");
|
|
for (u = 0; u < 16; u ++)
|
|
printf("%02X", ivtmp[u]);
|
|
printf("\n");
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Decode IV into four 32-bit words (little-endian).
|
|
*/
|
|
r0 = decode32le(ivtmp);
|
|
r1 = decode32le(ivtmp + 4);
|
|
r2 = decode32le(ivtmp + 8);
|
|
r3 = decode32le(ivtmp + 12);
|
|
|
|
#ifdef SOSEMANUK_VECTOR
|
|
printf(" -> %08lX %08lX %08lX %08lX\n",
|
|
(unsigned long)r3, (unsigned long)r2,
|
|
(unsigned long)r1, (unsigned long)r0);
|
|
#endif
|
|
|
|
/*
|
|
* Encrypt IV with Serpent24. Some values are extracted from the
|
|
* output of the twelfth, eighteenth and twenty-fourth rounds.
|
|
*/
|
|
FSS(0, S0, 0, 1, 2, 3, 4, 1, 4, 2, 0);
|
|
FSS(4, S1, 1, 4, 2, 0, 3, 2, 1, 0, 4);
|
|
FSS(8, S2, 2, 1, 0, 4, 3, 0, 4, 1, 3);
|
|
FSS(12, S3, 0, 4, 1, 3, 2, 4, 1, 3, 2);
|
|
FSS(16, S4, 4, 1, 3, 2, 0, 1, 0, 4, 2);
|
|
FSS(20, S5, 1, 0, 4, 2, 3, 0, 2, 1, 4);
|
|
FSS(24, S6, 0, 2, 1, 4, 3, 0, 2, 3, 1);
|
|
FSS(28, S7, 0, 2, 3, 1, 4, 4, 1, 2, 0);
|
|
FSS(32, S0, 4, 1, 2, 0, 3, 1, 3, 2, 4);
|
|
FSS(36, S1, 1, 3, 2, 4, 0, 2, 1, 4, 3);
|
|
FSS(40, S2, 2, 1, 4, 3, 0, 4, 3, 1, 0);
|
|
FSS(44, S3, 4, 3, 1, 0, 2, 3, 1, 0, 2);
|
|
rc->s09 = r3;
|
|
rc->s08 = r1;
|
|
rc->s07 = r0;
|
|
rc->s06 = r2;
|
|
|
|
FSS(48, S4, 3, 1, 0, 2, 4, 1, 4, 3, 2);
|
|
FSS(52, S5, 1, 4, 3, 2, 0, 4, 2, 1, 3);
|
|
FSS(56, S6, 4, 2, 1, 3, 0, 4, 2, 0, 1);
|
|
FSS(60, S7, 4, 2, 0, 1, 3, 3, 1, 2, 4);
|
|
FSS(64, S0, 3, 1, 2, 4, 0, 1, 0, 2, 3);
|
|
FSS(68, S1, 1, 0, 2, 3, 4, 2, 1, 3, 0);
|
|
rc->r1 = r2;
|
|
rc->s04 = r1;
|
|
rc->r2 = r3;
|
|
rc->s05 = r0;
|
|
|
|
FSS(72, S2, 2, 1, 3, 0, 4, 3, 0, 1, 4);
|
|
FSS(76, S3, 3, 0, 1, 4, 2, 0, 1, 4, 2);
|
|
FSS(80, S4, 0, 1, 4, 2, 3, 1, 3, 0, 2);
|
|
FSS(84, S5, 1, 3, 0, 2, 4, 3, 2, 1, 0);
|
|
FSS(88, S6, 3, 2, 1, 0, 4, 3, 2, 4, 1);
|
|
FSF(92, S7, 3, 2, 4, 1, 0, 0, 1, 2, 3);
|
|
rc->s03 = r0;
|
|
rc->s02 = r1;
|
|
rc->s01 = r2;
|
|
rc->s00 = r3;
|
|
|
|
#ifdef SOSEMANUK_VECTOR
|
|
printf("Initial LFSR state:\n");
|
|
printf(" s1 = %08lX\n", (unsigned long)rc->s00);
|
|
printf(" s2 = %08lX\n", (unsigned long)rc->s01);
|
|
printf(" s3 = %08lX\n", (unsigned long)rc->s02);
|
|
printf(" s4 = %08lX\n", (unsigned long)rc->s03);
|
|
printf(" s5 = %08lX\n", (unsigned long)rc->s04);
|
|
printf(" s6 = %08lX\n", (unsigned long)rc->s05);
|
|
printf(" s7 = %08lX\n", (unsigned long)rc->s06);
|
|
printf(" s8 = %08lX\n", (unsigned long)rc->s07);
|
|
printf(" s9 = %08lX\n", (unsigned long)rc->s08);
|
|
printf(" s10 = %08lX\n", (unsigned long)rc->s09);
|
|
printf("Initial FSM state: r1 = %08lX r2 = %08lX\n",
|
|
(unsigned long)rc->r1, (unsigned long)rc->r2);
|
|
#endif
|
|
|
|
#ifndef SOSEMANUK_ECRYPT
|
|
rc->ptr = sizeof rc->buf;
|
|
#endif
|
|
|
|
#undef KA
|
|
#undef FSS
|
|
#undef FSF
|
|
|
|
#ifdef SOSEMANUK_ECRYPT
|
|
#undef rc
|
|
#undef kc
|
|
#undef iv_len
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Multiplication by alpha: alpha * x = T32(x << 8) ^ mul_a[x >> 24]
|
|
*/
|
|
static unum32 mul_a[] = {
|
|
0x00000000, 0xE19FCF13, 0x6B973726, 0x8A08F835,
|
|
0xD6876E4C, 0x3718A15F, 0xBD10596A, 0x5C8F9679,
|
|
0x05A7DC98, 0xE438138B, 0x6E30EBBE, 0x8FAF24AD,
|
|
0xD320B2D4, 0x32BF7DC7, 0xB8B785F2, 0x59284AE1,
|
|
0x0AE71199, 0xEB78DE8A, 0x617026BF, 0x80EFE9AC,
|
|
0xDC607FD5, 0x3DFFB0C6, 0xB7F748F3, 0x566887E0,
|
|
0x0F40CD01, 0xEEDF0212, 0x64D7FA27, 0x85483534,
|
|
0xD9C7A34D, 0x38586C5E, 0xB250946B, 0x53CF5B78,
|
|
0x1467229B, 0xF5F8ED88, 0x7FF015BD, 0x9E6FDAAE,
|
|
0xC2E04CD7, 0x237F83C4, 0xA9777BF1, 0x48E8B4E2,
|
|
0x11C0FE03, 0xF05F3110, 0x7A57C925, 0x9BC80636,
|
|
0xC747904F, 0x26D85F5C, 0xACD0A769, 0x4D4F687A,
|
|
0x1E803302, 0xFF1FFC11, 0x75170424, 0x9488CB37,
|
|
0xC8075D4E, 0x2998925D, 0xA3906A68, 0x420FA57B,
|
|
0x1B27EF9A, 0xFAB82089, 0x70B0D8BC, 0x912F17AF,
|
|
0xCDA081D6, 0x2C3F4EC5, 0xA637B6F0, 0x47A879E3,
|
|
0x28CE449F, 0xC9518B8C, 0x435973B9, 0xA2C6BCAA,
|
|
0xFE492AD3, 0x1FD6E5C0, 0x95DE1DF5, 0x7441D2E6,
|
|
0x2D699807, 0xCCF65714, 0x46FEAF21, 0xA7616032,
|
|
0xFBEEF64B, 0x1A713958, 0x9079C16D, 0x71E60E7E,
|
|
0x22295506, 0xC3B69A15, 0x49BE6220, 0xA821AD33,
|
|
0xF4AE3B4A, 0x1531F459, 0x9F390C6C, 0x7EA6C37F,
|
|
0x278E899E, 0xC611468D, 0x4C19BEB8, 0xAD8671AB,
|
|
0xF109E7D2, 0x109628C1, 0x9A9ED0F4, 0x7B011FE7,
|
|
0x3CA96604, 0xDD36A917, 0x573E5122, 0xB6A19E31,
|
|
0xEA2E0848, 0x0BB1C75B, 0x81B93F6E, 0x6026F07D,
|
|
0x390EBA9C, 0xD891758F, 0x52998DBA, 0xB30642A9,
|
|
0xEF89D4D0, 0x0E161BC3, 0x841EE3F6, 0x65812CE5,
|
|
0x364E779D, 0xD7D1B88E, 0x5DD940BB, 0xBC468FA8,
|
|
0xE0C919D1, 0x0156D6C2, 0x8B5E2EF7, 0x6AC1E1E4,
|
|
0x33E9AB05, 0xD2766416, 0x587E9C23, 0xB9E15330,
|
|
0xE56EC549, 0x04F10A5A, 0x8EF9F26F, 0x6F663D7C,
|
|
0x50358897, 0xB1AA4784, 0x3BA2BFB1, 0xDA3D70A2,
|
|
0x86B2E6DB, 0x672D29C8, 0xED25D1FD, 0x0CBA1EEE,
|
|
0x5592540F, 0xB40D9B1C, 0x3E056329, 0xDF9AAC3A,
|
|
0x83153A43, 0x628AF550, 0xE8820D65, 0x091DC276,
|
|
0x5AD2990E, 0xBB4D561D, 0x3145AE28, 0xD0DA613B,
|
|
0x8C55F742, 0x6DCA3851, 0xE7C2C064, 0x065D0F77,
|
|
0x5F754596, 0xBEEA8A85, 0x34E272B0, 0xD57DBDA3,
|
|
0x89F22BDA, 0x686DE4C9, 0xE2651CFC, 0x03FAD3EF,
|
|
0x4452AA0C, 0xA5CD651F, 0x2FC59D2A, 0xCE5A5239,
|
|
0x92D5C440, 0x734A0B53, 0xF942F366, 0x18DD3C75,
|
|
0x41F57694, 0xA06AB987, 0x2A6241B2, 0xCBFD8EA1,
|
|
0x977218D8, 0x76EDD7CB, 0xFCE52FFE, 0x1D7AE0ED,
|
|
0x4EB5BB95, 0xAF2A7486, 0x25228CB3, 0xC4BD43A0,
|
|
0x9832D5D9, 0x79AD1ACA, 0xF3A5E2FF, 0x123A2DEC,
|
|
0x4B12670D, 0xAA8DA81E, 0x2085502B, 0xC11A9F38,
|
|
0x9D950941, 0x7C0AC652, 0xF6023E67, 0x179DF174,
|
|
0x78FBCC08, 0x9964031B, 0x136CFB2E, 0xF2F3343D,
|
|
0xAE7CA244, 0x4FE36D57, 0xC5EB9562, 0x24745A71,
|
|
0x7D5C1090, 0x9CC3DF83, 0x16CB27B6, 0xF754E8A5,
|
|
0xABDB7EDC, 0x4A44B1CF, 0xC04C49FA, 0x21D386E9,
|
|
0x721CDD91, 0x93831282, 0x198BEAB7, 0xF81425A4,
|
|
0xA49BB3DD, 0x45047CCE, 0xCF0C84FB, 0x2E934BE8,
|
|
0x77BB0109, 0x9624CE1A, 0x1C2C362F, 0xFDB3F93C,
|
|
0xA13C6F45, 0x40A3A056, 0xCAAB5863, 0x2B349770,
|
|
0x6C9CEE93, 0x8D032180, 0x070BD9B5, 0xE69416A6,
|
|
0xBA1B80DF, 0x5B844FCC, 0xD18CB7F9, 0x301378EA,
|
|
0x693B320B, 0x88A4FD18, 0x02AC052D, 0xE333CA3E,
|
|
0xBFBC5C47, 0x5E239354, 0xD42B6B61, 0x35B4A472,
|
|
0x667BFF0A, 0x87E43019, 0x0DECC82C, 0xEC73073F,
|
|
0xB0FC9146, 0x51635E55, 0xDB6BA660, 0x3AF46973,
|
|
0x63DC2392, 0x8243EC81, 0x084B14B4, 0xE9D4DBA7,
|
|
0xB55B4DDE, 0x54C482CD, 0xDECC7AF8, 0x3F53B5EB
|
|
};
|
|
|
|
/*
|
|
* Multiplication by 1/alpha: 1/alpha * x = (x >> 8) ^ mul_ia[x & 0xFF]
|
|
*/
|
|
static unum32 mul_ia[] = {
|
|
0x00000000, 0x180F40CD, 0x301E8033, 0x2811C0FE,
|
|
0x603CA966, 0x7833E9AB, 0x50222955, 0x482D6998,
|
|
0xC078FBCC, 0xD877BB01, 0xF0667BFF, 0xE8693B32,
|
|
0xA04452AA, 0xB84B1267, 0x905AD299, 0x88559254,
|
|
0x29F05F31, 0x31FF1FFC, 0x19EEDF02, 0x01E19FCF,
|
|
0x49CCF657, 0x51C3B69A, 0x79D27664, 0x61DD36A9,
|
|
0xE988A4FD, 0xF187E430, 0xD99624CE, 0xC1996403,
|
|
0x89B40D9B, 0x91BB4D56, 0xB9AA8DA8, 0xA1A5CD65,
|
|
0x5249BE62, 0x4A46FEAF, 0x62573E51, 0x7A587E9C,
|
|
0x32751704, 0x2A7A57C9, 0x026B9737, 0x1A64D7FA,
|
|
0x923145AE, 0x8A3E0563, 0xA22FC59D, 0xBA208550,
|
|
0xF20DECC8, 0xEA02AC05, 0xC2136CFB, 0xDA1C2C36,
|
|
0x7BB9E153, 0x63B6A19E, 0x4BA76160, 0x53A821AD,
|
|
0x1B854835, 0x038A08F8, 0x2B9BC806, 0x339488CB,
|
|
0xBBC11A9F, 0xA3CE5A52, 0x8BDF9AAC, 0x93D0DA61,
|
|
0xDBFDB3F9, 0xC3F2F334, 0xEBE333CA, 0xF3EC7307,
|
|
0xA492D5C4, 0xBC9D9509, 0x948C55F7, 0x8C83153A,
|
|
0xC4AE7CA2, 0xDCA13C6F, 0xF4B0FC91, 0xECBFBC5C,
|
|
0x64EA2E08, 0x7CE56EC5, 0x54F4AE3B, 0x4CFBEEF6,
|
|
0x04D6876E, 0x1CD9C7A3, 0x34C8075D, 0x2CC74790,
|
|
0x8D628AF5, 0x956DCA38, 0xBD7C0AC6, 0xA5734A0B,
|
|
0xED5E2393, 0xF551635E, 0xDD40A3A0, 0xC54FE36D,
|
|
0x4D1A7139, 0x551531F4, 0x7D04F10A, 0x650BB1C7,
|
|
0x2D26D85F, 0x35299892, 0x1D38586C, 0x053718A1,
|
|
0xF6DB6BA6, 0xEED42B6B, 0xC6C5EB95, 0xDECAAB58,
|
|
0x96E7C2C0, 0x8EE8820D, 0xA6F942F3, 0xBEF6023E,
|
|
0x36A3906A, 0x2EACD0A7, 0x06BD1059, 0x1EB25094,
|
|
0x569F390C, 0x4E9079C1, 0x6681B93F, 0x7E8EF9F2,
|
|
0xDF2B3497, 0xC724745A, 0xEF35B4A4, 0xF73AF469,
|
|
0xBF179DF1, 0xA718DD3C, 0x8F091DC2, 0x97065D0F,
|
|
0x1F53CF5B, 0x075C8F96, 0x2F4D4F68, 0x37420FA5,
|
|
0x7F6F663D, 0x676026F0, 0x4F71E60E, 0x577EA6C3,
|
|
0xE18D0321, 0xF98243EC, 0xD1938312, 0xC99CC3DF,
|
|
0x81B1AA47, 0x99BEEA8A, 0xB1AF2A74, 0xA9A06AB9,
|
|
0x21F5F8ED, 0x39FAB820, 0x11EB78DE, 0x09E43813,
|
|
0x41C9518B, 0x59C61146, 0x71D7D1B8, 0x69D89175,
|
|
0xC87D5C10, 0xD0721CDD, 0xF863DC23, 0xE06C9CEE,
|
|
0xA841F576, 0xB04EB5BB, 0x985F7545, 0x80503588,
|
|
0x0805A7DC, 0x100AE711, 0x381B27EF, 0x20146722,
|
|
0x68390EBA, 0x70364E77, 0x58278E89, 0x4028CE44,
|
|
0xB3C4BD43, 0xABCBFD8E, 0x83DA3D70, 0x9BD57DBD,
|
|
0xD3F81425, 0xCBF754E8, 0xE3E69416, 0xFBE9D4DB,
|
|
0x73BC468F, 0x6BB30642, 0x43A2C6BC, 0x5BAD8671,
|
|
0x1380EFE9, 0x0B8FAF24, 0x239E6FDA, 0x3B912F17,
|
|
0x9A34E272, 0x823BA2BF, 0xAA2A6241, 0xB225228C,
|
|
0xFA084B14, 0xE2070BD9, 0xCA16CB27, 0xD2198BEA,
|
|
0x5A4C19BE, 0x42435973, 0x6A52998D, 0x725DD940,
|
|
0x3A70B0D8, 0x227FF015, 0x0A6E30EB, 0x12617026,
|
|
0x451FD6E5, 0x5D109628, 0x750156D6, 0x6D0E161B,
|
|
0x25237F83, 0x3D2C3F4E, 0x153DFFB0, 0x0D32BF7D,
|
|
0x85672D29, 0x9D686DE4, 0xB579AD1A, 0xAD76EDD7,
|
|
0xE55B844F, 0xFD54C482, 0xD545047C, 0xCD4A44B1,
|
|
0x6CEF89D4, 0x74E0C919, 0x5CF109E7, 0x44FE492A,
|
|
0x0CD320B2, 0x14DC607F, 0x3CCDA081, 0x24C2E04C,
|
|
0xAC977218, 0xB49832D5, 0x9C89F22B, 0x8486B2E6,
|
|
0xCCABDB7E, 0xD4A49BB3, 0xFCB55B4D, 0xE4BA1B80,
|
|
0x17566887, 0x0F59284A, 0x2748E8B4, 0x3F47A879,
|
|
0x776AC1E1, 0x6F65812C, 0x477441D2, 0x5F7B011F,
|
|
0xD72E934B, 0xCF21D386, 0xE7301378, 0xFF3F53B5,
|
|
0xB7123A2D, 0xAF1D7AE0, 0x870CBA1E, 0x9F03FAD3,
|
|
0x3EA637B6, 0x26A9777B, 0x0EB8B785, 0x16B7F748,
|
|
0x5E9A9ED0, 0x4695DE1D, 0x6E841EE3, 0x768B5E2E,
|
|
0xFEDECC7A, 0xE6D18CB7, 0xCEC04C49, 0xD6CF0C84,
|
|
0x9EE2651C, 0x86ED25D1, 0xAEFCE52F, 0xB6F3A5E2
|
|
};
|
|
|
|
/*
|
|
* Compute the next block of bits of output stream. This is equivalent
|
|
* to one full rotation of the shift register.
|
|
*
|
|
* If SOSEMANUK_SPEED is defined, this function takes an extra parameter
|
|
* "counter". The function then returns the sum of all produced
|
|
* 32-bit words, in an "unum32". That sum prevents the compiler from
|
|
* optimizing out part of the computation.
|
|
*/
|
|
#if defined SOSEMANUK_ECRYPT
|
|
static void
|
|
sosemanuk_internal(ECRYPT_ctx *rc, u8 *dst)
|
|
#elif defined SOSEMANUK_SPEED
|
|
static unum32
|
|
sosemanuk_internal(sosemanuk_run_context *rc, unsigned long counter)
|
|
#else
|
|
static void
|
|
sosemanuk_internal(sosemanuk_run_context *rc)
|
|
#endif
|
|
{
|
|
/*
|
|
* MUL_A(x) computes alpha * x (in F_{2^32}).
|
|
* MUL_G(x) computes 1/alpha * x (in F_{2^32}).
|
|
*/
|
|
#define MUL_A(x) (T32((x) << 8) ^ mul_a[(x) >> 24])
|
|
#define MUL_G(x) (((x) >> 8) ^ mul_ia[(x) & 0xFF])
|
|
|
|
/*
|
|
* This macro computes the special multiplexer, which chooses
|
|
* between "x" and "x xor y", depending on the least significant
|
|
* bit of the control word. We use the C "?:" selection operator
|
|
* (which most compilers know how to optimise) except for Alpha,
|
|
* where the manual sign extension seems to perform equally well
|
|
* with DEC/Compaq/HP compiler, and much better with gcc.
|
|
*/
|
|
#ifdef __alpha
|
|
#define XMUX(c, x, y) ((((signed int)((c) << 31) >> 31) & (y)) ^ (x))
|
|
#else
|
|
#define XMUX(c, x, y) (((c) & 0x1) ? ((x) ^ (y)) : (x))
|
|
#endif
|
|
|
|
/*
|
|
* FSM() updates the finite state machine.
|
|
*/
|
|
#define FSM(x0, x1, x2, x3, x4, x5, x6, x7, x8, x9) do { \
|
|
unum32 tt, or1; \
|
|
tt = XMUX(r1, s ## x1, s ## x8); \
|
|
or1 = r1; \
|
|
r1 = T32(r2 + tt); \
|
|
tt = T32(or1 * 0x54655307); \
|
|
r2 = ROTL(tt, 7); \
|
|
PFSM; \
|
|
} while (0)
|
|
|
|
/*
|
|
* LRU updates the shift register; the dropped value is stored
|
|
* in variable "dd".
|
|
*/
|
|
#define LRU(x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, dd) do { \
|
|
dd = s ## x0; \
|
|
s ## x0 = MUL_A(s ## x0) ^ MUL_G(s ## x3) ^ s ## x9; \
|
|
PLFSR(dd, s ## x1, s ## x2, s ## x3, s ## x4, s ## x5, \
|
|
s ## x6, s ## x7, s ## x8, s ## x9, s ## x0); \
|
|
} while (0)
|
|
|
|
/*
|
|
* CC1 stores into variable "ee" the next intermediate word
|
|
* (combination of the new states of the LFSR and the FSM).
|
|
*/
|
|
#define CC1(x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, ee) do { \
|
|
ee = T32(s ## x9 + r1) ^ r2; \
|
|
PCCVAL(ee); \
|
|
} while (0)
|
|
|
|
/*
|
|
* STEP computes one internal round. "dd" receives the "s_t"
|
|
* value (dropped from the LFSR) and "ee" gets the value computed
|
|
* from the LFSR and FSM.
|
|
*/
|
|
#define STEP(x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, dd, ee) do { \
|
|
FSM(x0, x1, x2, x3, x4, x5, x6, x7, x8, x9); \
|
|
LRU(x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, dd); \
|
|
CC1(x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, ee); \
|
|
} while (0)
|
|
|
|
/*
|
|
* Apply one Serpent round (with the provided S-box macro), XOR
|
|
* the result with the "v" values, and encode the result into
|
|
* the destination buffer, at the provided offset. The "x*"
|
|
* arguments encode the output permutation of the "S" macro.
|
|
*/
|
|
#ifdef SOSEMANUK_SPEED
|
|
|
|
#define SRD(S, x0, x1, x2, x3, ooff) do { \
|
|
S(u0, u1, u2, u3, u4); \
|
|
speed_acc += u ## x0 ^ v0; \
|
|
speed_acc += u ## x1 ^ v1; \
|
|
speed_acc += u ## x2 ^ v2; \
|
|
speed_acc += u ## x3 ^ v3; \
|
|
} while (0)
|
|
|
|
#else
|
|
|
|
#ifdef SOSEMANUK_ECRYPT
|
|
#define OUTWORD_BASE dst
|
|
#else
|
|
#define OUTWORD_BASE (rc->buf)
|
|
#endif
|
|
|
|
#define SRD(S, x0, x1, x2, x3, ooff) do { \
|
|
PSPIN(u0, u1, u2, u3); \
|
|
S(u0, u1, u2, u3, u4); \
|
|
PSPOUT(u ## x0, u ## x1, u ## x2, u ## x3); \
|
|
encode32le(OUTWORD_BASE + ooff, u ## x0 ^ v0); \
|
|
encode32le(OUTWORD_BASE + ooff + 4, u ## x1 ^ v1); \
|
|
encode32le(OUTWORD_BASE + ooff + 8, u ## x2 ^ v2); \
|
|
encode32le(OUTWORD_BASE + ooff + 12, u ## x3 ^ v3); \
|
|
POUT(OUTWORD_BASE + ooff); \
|
|
} while (0)
|
|
|
|
#endif
|
|
|
|
/*
|
|
* Audit code; used for detailed test vectors.
|
|
*/
|
|
#ifdef SOSEMANUK_VECTOR
|
|
|
|
#define PFSM do { \
|
|
printf("New FSM state: r1 = %08lX r2 = %08lX\n", \
|
|
(unsigned long)r1, (unsigned long)r2); \
|
|
} while (0)
|
|
|
|
#define PLFSR(dd, x1, x2, x3, x4, x5, x6, x7, x8, x9, x0) do { \
|
|
printf("New LFSR state:\n"); \
|
|
printf(" dropped (s_t): %08lX\n", (unsigned long)dd); \
|
|
printf(" s_t+1 = %08lX\n", (unsigned long)x1); \
|
|
printf(" s_t+2 = %08lX\n", (unsigned long)x2); \
|
|
printf(" s_t+3 = %08lX\n", (unsigned long)x3); \
|
|
printf(" s_t+4 = %08lX\n", (unsigned long)x4); \
|
|
printf(" s_t+5 = %08lX\n", (unsigned long)x5); \
|
|
printf(" s_t+6 = %08lX\n", (unsigned long)x6); \
|
|
printf(" s_t+7 = %08lX\n", (unsigned long)x7); \
|
|
printf(" s_t+8 = %08lX\n", (unsigned long)x8); \
|
|
printf(" s_t+9 = %08lX\n", (unsigned long)x9); \
|
|
printf(" s_t+10 = %08lX\n", (unsigned long)x0); \
|
|
} while (0)
|
|
|
|
#define PCCVAL(ee) do { \
|
|
printf("Intermediate output: %08lX\n", (unsigned long)ee); \
|
|
} while (0)
|
|
|
|
#define PSPIN(x0, x1, x2, x3) do { \
|
|
printf("Serpent1 input: %08lX %08lX %08lX %08lX\n", \
|
|
(unsigned long)x3, (unsigned long)x2, \
|
|
(unsigned long)x1, (unsigned long)x0); \
|
|
} while (0)
|
|
|
|
#define PSPOUT(x0, x1, x2, x3) do { \
|
|
printf("Serpent1 output: %08lX %08lX %08lX %08lX\n", \
|
|
(unsigned long)x3, (unsigned long)x2, \
|
|
(unsigned long)x1, (unsigned long)x0); \
|
|
} while (0)
|
|
|
|
#define POUT(buf) do { \
|
|
size_t j; \
|
|
printf("Stream output: "); \
|
|
for (j = 0; j < 16; j ++) \
|
|
printf("%02X", (buf)[j]); \
|
|
printf("\n"); \
|
|
} while (0)
|
|
|
|
#else
|
|
|
|
#define PFSM (void)0
|
|
#define PLFSR(dd, x1, x2, x3, x4, x5, x6, x7, x8, x9, x0) (void)0
|
|
#define PCCVAL(ee) (void)0
|
|
#define PSPIN(x0, x1, x2, x3) (void)0
|
|
#define PSPOUT(x0, x1, x2, x3) (void)0
|
|
#define POUT(buf) (void)0
|
|
|
|
#endif
|
|
|
|
unum32 s00 = rc->s00;
|
|
unum32 s01 = rc->s01;
|
|
unum32 s02 = rc->s02;
|
|
unum32 s03 = rc->s03;
|
|
unum32 s04 = rc->s04;
|
|
unum32 s05 = rc->s05;
|
|
unum32 s06 = rc->s06;
|
|
unum32 s07 = rc->s07;
|
|
unum32 s08 = rc->s08;
|
|
unum32 s09 = rc->s09;
|
|
unum32 r1 = rc->r1;
|
|
unum32 r2 = rc->r2;
|
|
unum32 u0, u1, u2, u3, u4;
|
|
unum32 v0, v1, v2, v3;
|
|
#ifdef SOSEMANUK_SPEED
|
|
unum32 speed_acc = 0;
|
|
#endif
|
|
|
|
#ifdef SOSEMANUK_SPEED
|
|
while (counter -- > 0) {
|
|
#endif
|
|
|
|
STEP(00, 01, 02, 03, 04, 05, 06, 07, 08, 09, v0, u0);
|
|
STEP(01, 02, 03, 04, 05, 06, 07, 08, 09, 00, v1, u1);
|
|
STEP(02, 03, 04, 05, 06, 07, 08, 09, 00, 01, v2, u2);
|
|
STEP(03, 04, 05, 06, 07, 08, 09, 00, 01, 02, v3, u3);
|
|
SRD(S2, 2, 3, 1, 4, 0);
|
|
STEP(04, 05, 06, 07, 08, 09, 00, 01, 02, 03, v0, u0);
|
|
STEP(05, 06, 07, 08, 09, 00, 01, 02, 03, 04, v1, u1);
|
|
STEP(06, 07, 08, 09, 00, 01, 02, 03, 04, 05, v2, u2);
|
|
STEP(07, 08, 09, 00, 01, 02, 03, 04, 05, 06, v3, u3);
|
|
SRD(S2, 2, 3, 1, 4, 16);
|
|
STEP(08, 09, 00, 01, 02, 03, 04, 05, 06, 07, v0, u0);
|
|
STEP(09, 00, 01, 02, 03, 04, 05, 06, 07, 08, v1, u1);
|
|
STEP(00, 01, 02, 03, 04, 05, 06, 07, 08, 09, v2, u2);
|
|
STEP(01, 02, 03, 04, 05, 06, 07, 08, 09, 00, v3, u3);
|
|
SRD(S2, 2, 3, 1, 4, 32);
|
|
STEP(02, 03, 04, 05, 06, 07, 08, 09, 00, 01, v0, u0);
|
|
STEP(03, 04, 05, 06, 07, 08, 09, 00, 01, 02, v1, u1);
|
|
STEP(04, 05, 06, 07, 08, 09, 00, 01, 02, 03, v2, u2);
|
|
STEP(05, 06, 07, 08, 09, 00, 01, 02, 03, 04, v3, u3);
|
|
SRD(S2, 2, 3, 1, 4, 48);
|
|
STEP(06, 07, 08, 09, 00, 01, 02, 03, 04, 05, v0, u0);
|
|
STEP(07, 08, 09, 00, 01, 02, 03, 04, 05, 06, v1, u1);
|
|
STEP(08, 09, 00, 01, 02, 03, 04, 05, 06, 07, v2, u2);
|
|
STEP(09, 00, 01, 02, 03, 04, 05, 06, 07, 08, v3, u3);
|
|
SRD(S2, 2, 3, 1, 4, 64);
|
|
|
|
#ifdef SOSEMANUK_SPEED
|
|
}
|
|
#endif
|
|
|
|
rc->s00 = s00;
|
|
rc->s01 = s01;
|
|
rc->s02 = s02;
|
|
rc->s03 = s03;
|
|
rc->s04 = s04;
|
|
rc->s05 = s05;
|
|
rc->s06 = s06;
|
|
rc->s07 = s07;
|
|
rc->s08 = s08;
|
|
rc->s09 = s09;
|
|
rc->r1 = r1;
|
|
rc->r2 = r2;
|
|
|
|
#ifdef SOSEMANUK_SPEED
|
|
return T32(speed_acc);
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Combine buffers in1[] and in2[] by XOR, result in out[]. The length
|
|
* is "data_len" (in bytes). Partial overlap of out[] with either in1[]
|
|
* or in2[] is not allowed. Total overlap (out == in1 and/or out == in2)
|
|
* is allowed.
|
|
*/
|
|
static INLINE void
|
|
xorbuf(const unsigned char *in1, const unsigned char *in2,
|
|
unsigned char *out, size_t data_len)
|
|
{
|
|
while (data_len -- > 0)
|
|
*out ++ = *in1 ++ ^ *in2 ++;
|
|
}
|
|
|
|
/* ======================================================================== */
|
|
/*
|
|
* External API.
|
|
*/
|
|
|
|
#if defined SOSEMANUK_ECRYPT
|
|
|
|
/* see ecrypt-sync.h */
|
|
void
|
|
ECRYPT_process_bytes(int action, ECRYPT_ctx *ctx,
|
|
const u8 *input, u8 *output, u32 msglen)
|
|
{
|
|
(void)action;
|
|
|
|
while (msglen > 0) {
|
|
unsigned char tbuf[ECRYPT_BLOCKLENGTH];
|
|
size_t len;
|
|
|
|
sosemanuk_internal(ctx, tbuf);
|
|
len = sizeof tbuf;
|
|
if (len > msglen)
|
|
len = msglen;
|
|
xorbuf(input, tbuf, output, len);
|
|
input += len;
|
|
output += len;
|
|
msglen -= len;
|
|
}
|
|
}
|
|
|
|
/* see ecrypt-sync.h */
|
|
void
|
|
ECRYPT_keystream_bytes(ECRYPT_ctx *ctx, u8 *keystream, u32 length)
|
|
{
|
|
while (length > 0) {
|
|
if (length >= ECRYPT_BLOCKLENGTH) {
|
|
sosemanuk_internal(ctx, keystream);
|
|
keystream += ECRYPT_BLOCKLENGTH;
|
|
length -= ECRYPT_BLOCKLENGTH;
|
|
} else {
|
|
unsigned char tbuf[ECRYPT_BLOCKLENGTH];
|
|
|
|
sosemanuk_internal(ctx, tbuf);
|
|
memcpy(keystream, tbuf, length);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* see ecrypt-sync.h */
|
|
void
|
|
ECRYPT_process_blocks(int action, ECRYPT_ctx *ctx,
|
|
const u8 *input, u8 *output, u32 blocks)
|
|
{
|
|
(void)action;
|
|
|
|
while (blocks -- > 0) {
|
|
unsigned char tbuf[ECRYPT_BLOCKLENGTH];
|
|
|
|
sosemanuk_internal(ctx, tbuf);
|
|
xorbuf(input, tbuf, output, ECRYPT_BLOCKLENGTH);
|
|
input += ECRYPT_BLOCKLENGTH;
|
|
output += ECRYPT_BLOCKLENGTH;
|
|
}
|
|
}
|
|
|
|
/* see ecrypt-sync.h */
|
|
void
|
|
ECRYPT_keystream_blocks(ECRYPT_ctx *ctx, u8 *keystream, u32 blocks)
|
|
{
|
|
while (blocks -- > 0) {
|
|
sosemanuk_internal(ctx, keystream);
|
|
keystream += ECRYPT_BLOCKLENGTH;
|
|
}
|
|
}
|
|
|
|
#elif !defined SOSEMANUK_SPEED
|
|
|
|
/* see sosemanuk.h */
|
|
void
|
|
sosemanuk_prng(sosemanuk_run_context *rc, unsigned char *out, size_t out_len)
|
|
{
|
|
if (rc->ptr < (sizeof rc->buf)) {
|
|
size_t rlen = (sizeof rc->buf) - rc->ptr;
|
|
|
|
if (rlen > out_len)
|
|
rlen = out_len;
|
|
memcpy(out, rc->buf + rc->ptr, rlen);
|
|
out += rlen;
|
|
out_len -= rlen;
|
|
rc->ptr += rlen;
|
|
}
|
|
while (out_len > 0) {
|
|
sosemanuk_internal(rc);
|
|
if (out_len >= sizeof rc->buf) {
|
|
memcpy(out, rc->buf, sizeof rc->buf);
|
|
out += sizeof rc->buf;
|
|
out_len -= sizeof rc->buf;
|
|
} else {
|
|
memcpy(out, rc->buf, out_len);
|
|
rc->ptr = out_len;
|
|
out_len = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* see sosemanuk.h */
|
|
void
|
|
sosemanuk_encrypt(sosemanuk_run_context *rc,
|
|
unsigned char *in, unsigned char *out, size_t data_len)
|
|
{
|
|
if (rc->ptr < (sizeof rc->buf)) {
|
|
size_t rlen = (sizeof rc->buf) - rc->ptr;
|
|
|
|
if (rlen > data_len)
|
|
rlen = data_len;
|
|
xorbuf(rc->buf + rc->ptr, in, out, rlen);
|
|
in += rlen;
|
|
out += rlen;
|
|
data_len -= rlen;
|
|
rc->ptr += rlen;
|
|
}
|
|
while (data_len > 0) {
|
|
sosemanuk_internal(rc);
|
|
if (data_len >= sizeof rc->buf) {
|
|
xorbuf(rc->buf, in, out, sizeof rc->buf);
|
|
in += sizeof rc->buf;
|
|
out += sizeof rc->buf;
|
|
data_len -= sizeof rc->buf;
|
|
} else {
|
|
xorbuf(rc->buf, in, out, data_len);
|
|
rc->ptr = data_len;
|
|
data_len = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
#if defined SOSEMANUK_VECTOR
|
|
|
|
/* ======================================================================== */
|
|
/*
|
|
* Test code. This code is used to generate test vectors, with the
|
|
* SOSEMANUK_VECTOR macro defined.
|
|
*/
|
|
|
|
/*
|
|
* Generate 160 bytes of stream with the provided key and IV.
|
|
*/
|
|
static void
|
|
maketest(int tvn, unsigned char *key, size_t key_len,
|
|
unsigned char *iv, size_t iv_len)
|
|
{
|
|
#ifdef SOSEMANUK_ECRYPT
|
|
ECRYPT_ctx ctx;
|
|
#else
|
|
sosemanuk_key_context kc;
|
|
sosemanuk_run_context rc;
|
|
#endif
|
|
unsigned char tmp[160];
|
|
unsigned u;
|
|
|
|
printf("=====================================================\n");
|
|
printf("Detailed test vector %d:\n", tvn);
|
|
|
|
#ifdef SOSEMANUK_ECRYPT
|
|
ECRYPT_init();
|
|
ECRYPT_keysetup(&ctx, key, key_len * 8, iv_len * 8);
|
|
ECRYPT_ivsetup(&ctx, iv);
|
|
#if defined SOSEMANUK_TEST_ENCRYPT_BYTES
|
|
memset(tmp, 0, sizeof tmp);
|
|
ECRYPT_encrypt_bytes(&ctx, tmp, tmp, sizeof tmp);
|
|
#elif defined SOSEMANUK_TEST_DECRYPT_BYTES
|
|
memset(tmp, 0, sizeof tmp);
|
|
ECRYPT_decrypt_bytes(&ctx, tmp, tmp, sizeof tmp);
|
|
#elif defined SOSEMANUK_TEST_ENCRYPT_BLOCKS
|
|
memset(tmp, 0, sizeof tmp);
|
|
ECRYPT_encrypt_blocks(&ctx, tmp, tmp, 2);
|
|
#elif defined SOSEMANUK_TEST_DECRYPT_BLOCKS
|
|
memset(tmp, 0, sizeof tmp);
|
|
ECRYPT_decrypt_blocks(&ctx, tmp, tmp, 2);
|
|
#elif defined SOSEMANUK_TEST_KEYSTREAM_BLOCKS
|
|
ECRYPT_keystream_blocks(&ctx, tmp, 2);
|
|
#else
|
|
ECRYPT_keystream_bytes(&ctx, tmp, sizeof tmp);
|
|
#endif
|
|
#else
|
|
sosemanuk_schedule(&kc, key, key_len);
|
|
sosemanuk_init(&rc, &kc, iv, iv_len);
|
|
sosemanuk_prng(&rc, tmp, sizeof tmp);
|
|
#endif
|
|
|
|
printf("\n");
|
|
printf("Total output:");
|
|
for (u = 0; u < sizeof tmp; u ++) {
|
|
if ((u & 0x0F) == 0)
|
|
printf("\n");
|
|
printf(" %02X", (unsigned)tmp[u]);
|
|
}
|
|
printf("\n\n");
|
|
}
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
static unsigned char key1[] = { 0xA7, 0xC0, 0x83, 0xFE, 0xB7 };
|
|
static unsigned char iv1[] = {
|
|
0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
|
|
0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF
|
|
};
|
|
|
|
static unsigned char key2[] = {
|
|
0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
|
|
0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF
|
|
};
|
|
static unsigned char iv2[] = {
|
|
0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF,
|
|
0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77
|
|
};
|
|
|
|
maketest(1, key1, sizeof key1, iv1, sizeof iv1);
|
|
maketest(2, key2, sizeof key2, iv2, sizeof iv2);
|
|
return 0;
|
|
}
|
|
|
|
#elif defined SOSEMANUK_SPEED
|
|
|
|
/* ======================================================================== */
|
|
/*
|
|
* Test code. This code is used to measure implementation speed. The
|
|
* provided argument is the size of benched output stream, in megabytes.
|
|
*/
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr, "missing argument: output length (in megabytes)\n");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
static unsigned char key[] = { 0xA7, 0xC0, 0x83, 0xFE, 0xB7 };
|
|
static unsigned char iv[] = {
|
|
0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
|
|
0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF
|
|
};
|
|
sosemanuk_key_context kc;
|
|
sosemanuk_run_context rc;
|
|
unsigned long speed_counter;
|
|
clock_t orig, end;
|
|
double nw, ts;
|
|
unum32 sum;
|
|
|
|
if (argc < 2)
|
|
usage();
|
|
speed_counter = strtoul(argv[1], 0, 0);
|
|
speed_counter = (speed_counter * 65536UL) / 5;
|
|
if (speed_counter == 0)
|
|
usage();
|
|
nw = (double)speed_counter * 20.0;
|
|
printf("number of 32-bit words: %.0f\n", nw);
|
|
sosemanuk_schedule(&kc, key, sizeof key);
|
|
sosemanuk_init(&rc, &kc, iv, sizeof iv);
|
|
sosemanuk_internal(&rc, 16);
|
|
orig = clock();
|
|
sum = sosemanuk_internal(&rc, speed_counter);
|
|
end = clock();
|
|
ts = (double)end / CLOCKS_PER_SEC - (double)orig / CLOCKS_PER_SEC;
|
|
if (ts <= 1.0) {
|
|
printf("too fast: no meaningful result\n");
|
|
} else {
|
|
printf("elapsed time: %.4f seconds\n", ts);
|
|
printf("32-bit words per second: %.0f\n", nw / ts);
|
|
}
|
|
printf("sum = %08lX\n", (unsigned long)sum);
|
|
return 0;
|
|
}
|
|
|
|
#endif
|