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|
// sosemanuk.cpp - written and placed in the public domain by Wei Dai
#include "pch.h"
#include "sosemanuk.h"
#include "misc.h"
#include "cpu.h"
#include "serpentp.h"
NAMESPACE_BEGIN(CryptoPP)
void SosemanukPolicy::CipherSetKey(const NameValuePairs ¶ms, const byte *userKey, size_t keylen)
{
Serpent_KeySchedule(m_key, 24, userKey, keylen);
}
void SosemanukPolicy::CipherResynchronize(byte *keystreamBuffer, const byte *iv)
{
word32 a, b, c, d, e;
typedef BlockGetAndPut<word32, LittleEndian> Block;
Block::Get(iv)(a)(b)(c)(d);
const word32 *k = m_key;
unsigned int i=1;
do
{
beforeS0(KX); beforeS0(S0); afterS0(LT);
afterS0(KX); afterS0(S1); afterS1(LT);
if (i == 3) // after 18th round
{
m_state[4] = b;
m_state[5] = e;
m_state[10] = c;
m_state[11] = a;
}
afterS1(KX); afterS1(S2); afterS2(LT);
afterS2(KX); afterS2(S3); afterS3(LT);
if (i == 2) // after 12th round
{
m_state[6] = c;
m_state[7] = d;
m_state[8] = b;
m_state[9] = e;
}
afterS3(KX); afterS3(S4); afterS4(LT);
afterS4(KX); afterS4(S5); afterS5(LT);
afterS5(KX); afterS5(S6); afterS6(LT);
afterS6(KX); afterS6(S7); afterS7(LT);
if (i == 3)
break;
++i;
c = b;
b = e;
e = d;
d = a;
a = e;
k += 32;
}
while (true);
afterS7(KX);
m_state[0] = a;
m_state[1] = b;
m_state[2] = e;
m_state[3] = d;
}
static word32 s_mulTables[512] = {
#if CRYPTOPP_BOOL_X86 | CRYPTOPP_BOOL_X64
0x00000000, 0xE19FCF12, 0x6B973724, 0x8A08F836,
0xD6876E48, 0x3718A15A, 0xBD10596C, 0x5C8F967E,
0x05A7DC90, 0xE4381382, 0x6E30EBB4, 0x8FAF24A6,
0xD320B2D8, 0x32BF7DCA, 0xB8B785FC, 0x59284AEE,
0x0AE71189, 0xEB78DE9B, 0x617026AD, 0x80EFE9BF,
0xDC607FC1, 0x3DFFB0D3, 0xB7F748E5, 0x566887F7,
0x0F40CD19, 0xEEDF020B, 0x64D7FA3D, 0x8548352F,
0xD9C7A351, 0x38586C43, 0xB2509475, 0x53CF5B67,
0x146722BB, 0xF5F8EDA9, 0x7FF0159F, 0x9E6FDA8D,
0xC2E04CF3, 0x237F83E1, 0xA9777BD7, 0x48E8B4C5,
0x11C0FE2B, 0xF05F3139, 0x7A57C90F, 0x9BC8061D,
0xC7479063, 0x26D85F71, 0xACD0A747, 0x4D4F6855,
0x1E803332, 0xFF1FFC20, 0x75170416, 0x9488CB04,
0xC8075D7A, 0x29989268, 0xA3906A5E, 0x420FA54C,
0x1B27EFA2, 0xFAB820B0, 0x70B0D886, 0x912F1794,
0xCDA081EA, 0x2C3F4EF8, 0xA637B6CE, 0x47A879DC,
0x28CE44DF, 0xC9518BCD, 0x435973FB, 0xA2C6BCE9,
0xFE492A97, 0x1FD6E585, 0x95DE1DB3, 0x7441D2A1,
0x2D69984F, 0xCCF6575D, 0x46FEAF6B, 0xA7616079,
0xFBEEF607, 0x1A713915, 0x9079C123, 0x71E60E31,
0x22295556, 0xC3B69A44, 0x49BE6272, 0xA821AD60,
0xF4AE3B1E, 0x1531F40C, 0x9F390C3A, 0x7EA6C328,
0x278E89C6, 0xC61146D4, 0x4C19BEE2, 0xAD8671F0,
0xF109E78E, 0x1096289C, 0x9A9ED0AA, 0x7B011FB8,
0x3CA96664, 0xDD36A976, 0x573E5140, 0xB6A19E52,
0xEA2E082C, 0x0BB1C73E, 0x81B93F08, 0x6026F01A,
0x390EBAF4, 0xD89175E6, 0x52998DD0, 0xB30642C2,
0xEF89D4BC, 0x0E161BAE, 0x841EE398, 0x65812C8A,
0x364E77ED, 0xD7D1B8FF, 0x5DD940C9, 0xBC468FDB,
0xE0C919A5, 0x0156D6B7, 0x8B5E2E81, 0x6AC1E193,
0x33E9AB7D, 0xD276646F, 0x587E9C59, 0xB9E1534B,
0xE56EC535, 0x04F10A27, 0x8EF9F211, 0x6F663D03,
0x50358817, 0xB1AA4705, 0x3BA2BF33, 0xDA3D7021,
0x86B2E65F, 0x672D294D, 0xED25D17B, 0x0CBA1E69,
0x55925487, 0xB40D9B95, 0x3E0563A3, 0xDF9AACB1,
0x83153ACF, 0x628AF5DD, 0xE8820DEB, 0x091DC2F9,
0x5AD2999E, 0xBB4D568C, 0x3145AEBA, 0xD0DA61A8,
0x8C55F7D6, 0x6DCA38C4, 0xE7C2C0F2, 0x065D0FE0,
0x5F75450E, 0xBEEA8A1C, 0x34E2722A, 0xD57DBD38,
0x89F22B46, 0x686DE454, 0xE2651C62, 0x03FAD370,
0x4452AAAC, 0xA5CD65BE, 0x2FC59D88, 0xCE5A529A,
0x92D5C4E4, 0x734A0BF6, 0xF942F3C0, 0x18DD3CD2,
0x41F5763C, 0xA06AB92E, 0x2A624118, 0xCBFD8E0A,
0x97721874, 0x76EDD766, 0xFCE52F50, 0x1D7AE042,
0x4EB5BB25, 0xAF2A7437, 0x25228C01, 0xC4BD4313,
0x9832D56D, 0x79AD1A7F, 0xF3A5E249, 0x123A2D5B,
0x4B1267B5, 0xAA8DA8A7, 0x20855091, 0xC11A9F83,
0x9D9509FD, 0x7C0AC6EF, 0xF6023ED9, 0x179DF1CB,
0x78FBCCC8, 0x996403DA, 0x136CFBEC, 0xF2F334FE,
0xAE7CA280, 0x4FE36D92, 0xC5EB95A4, 0x24745AB6,
0x7D5C1058, 0x9CC3DF4A, 0x16CB277C, 0xF754E86E,
0xABDB7E10, 0x4A44B102, 0xC04C4934, 0x21D38626,
0x721CDD41, 0x93831253, 0x198BEA65, 0xF8142577,
0xA49BB309, 0x45047C1B, 0xCF0C842D, 0x2E934B3F,
0x77BB01D1, 0x9624CEC3, 0x1C2C36F5, 0xFDB3F9E7,
0xA13C6F99, 0x40A3A08B, 0xCAAB58BD, 0x2B3497AF,
0x6C9CEE73, 0x8D032161, 0x070BD957, 0xE6941645,
0xBA1B803B, 0x5B844F29, 0xD18CB71F, 0x3013780D,
0x693B32E3, 0x88A4FDF1, 0x02AC05C7, 0xE333CAD5,
0xBFBC5CAB, 0x5E2393B9, 0xD42B6B8F, 0x35B4A49D,
0x667BFFFA, 0x87E430E8, 0x0DECC8DE, 0xEC7307CC,
0xB0FC91B2, 0x51635EA0, 0xDB6BA696, 0x3AF46984,
0x63DC236A, 0x8243EC78, 0x084B144E, 0xE9D4DB5C,
0xB55B4D22, 0x54C48230, 0xDECC7A06, 0x3F53B514,
#else
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,
#endif
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
};
#if CRYPTOPP_BOOL_X86 || CRYPTOPP_BOOL_X64
unsigned int SosemanukPolicy::GetAlignment() const
{
#if CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE
#ifdef __INTEL_COMPILER
if (HasSSE2() && !IsP4()) // Intel compiler produces faster code for this algorithm on the P4
#else
if (HasSSE2())
#endif
return 16;
else
#endif
return 1;
#endif
}
#if CRYPTOPP_BOOL_X86 || CRYPTOPP_BOOL_X64
unsigned int SosemanukPolicy::GetOptimalBlockSize() const
{
#if CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE
#ifdef __INTEL_COMPILER
if (HasSSE2() && !IsP4()) // Intel compiler produces faster code for this algorithm on the P4
#else
if (HasSSE2())
#endif
return 4*BYTES_PER_ITERATION;
else
#endif
return BYTES_PER_ITERATION;
}
#endif
#pragma warning(disable: 4731) // frame pointer register 'ebp' modified by inline assembly code
void SosemanukPolicy::OperateKeystream(KeystreamOperation operation, byte *output, const byte *input, size_t iterationCount)
{
#if CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE
#ifdef __INTEL_COMPILER
if (HasSSE2() && !IsP4()) // Intel compiler produces faster code for this algorithm on the P4
#else
if (HasSSE2())
#endif
{
#ifdef __GNUC__
__asm__ __volatile__
(
".intel_syntax noprefix;"
AS1( push ebx)
#else
word32 *state = m_state;
AS2( mov eax, state)
AS2( mov edi, output)
AS2( mov edx, input)
AS2( mov ecx, iterationCount)
#endif
#define SSE2_output DWORD PTR [esp+1*4]
#define SSE2_input DWORD PTR [esp+2*4]
#define SSE2_wordsLeft DWORD PTR [esp+3*4]
#define SSE2_ediEnd DWORD PTR [esp+4*4]
#define SSE2_pMulTables DWORD PTR [esp+5*4]
#define SSE2_state DWORD PTR [esp+6*4]
#define SSE2_wordsLeft2 DWORD PTR [esp+7*4]
#define SSE2_stateCopy esp + 8*4
#define SSE2_uvStart SSE2_stateCopy + 12*4
AS1( push ebp)
AS2( mov ebx, esp)
AS2( and esp, 0xfffffff0)
AS2( sub esp, 80*4*2+12*4+8*4) // 80 v's, 80 u's, 12 state, 8 locals
AS2( mov [esp], ebx)
AS2( mov SSE2_output, edi)
AS2( mov SSE2_input, edx)
AS2( mov SSE2_state, eax)
#ifndef _MSC_VER
AS2( mov SSE2_pMulTables, esi)
#endif
AS2( lea ecx, [4*ecx+ecx])
AS2( lea esi, [4*ecx])
AS2( mov SSE2_wordsLeft, esi)
AS2( movdqa xmm0, [eax+0*16]) // copy state to stack to save a register
AS2( movdqa [SSE2_stateCopy+0*16], xmm0)
AS2( movdqa xmm0, [eax+1*16])
AS2( movdqa [SSE2_stateCopy+1*16], xmm0)
AS2( movq xmm0, QWORD PTR [eax+2*16])
AS2( movq QWORD PTR [SSE2_stateCopy+2*16], xmm0)
AS2( psrlq xmm0, 32)
AS2( movd ebx, xmm0) // s(9)
AS2( mov ecx, [eax+10*4])
AS2( mov edx, [eax+11*4])
AS2( pcmpeqb xmm7, xmm7) // all ones
#define s(i) SSE2_stateCopy + ASM_MOD(i,10)*4
#define u(j) edi + (ASM_MOD(j,4)*20 + (j/4)) * 4
#define v(j) edi + (ASM_MOD(j,4)*20 + (j/4)) * 4 + 80*4
#define r10 ecx
#define r11 edx
#define r20 edx
#define r21 ecx
#define SSE2_STEP(i, j) \
AS2( mov eax, [s(i+3)])\
AS2( mov ebp, 1)\
AS2( and ebp, r1##j)\
AS1( neg ebp)\
AS2( and ebp, [s(i+8)])\
AS2( xor ebp, [s(i+1)])\
AS2( add r2##j, ebp)\
AS2( movzx ebp, al)\
AS2( shr eax, 8)\
AS2( xor eax, [esi+1024+ebp*4])\
AS2( lea ebp, [ebx + r2##j])\
AS2( xor ebx, eax)\
AS2( imul r1##j, 0x54655307)\
AS2( mov eax, [s(i+0)])\
AS2( mov [v(i)], eax)\
AS2( rol eax, 8)\
AS2( xor ebx, eax)\
AS2( movzx eax, al)\
AS2( rol r1##j, 7)\
AS2( xor ebx, [esi+eax*4])\
AS2( xor ebp, r1##j)\
AS2( mov [u(i)], ebp)\
AS2( mov [s(i+0)], ebx)\
ASL(2) // outer loop, each iteration of this processes 80 words
AS2( lea edi, [SSE2_uvStart]) // start of v and u
AS2( mov eax, 80)
AS2( cmp esi, 80)
AS2( cmovg esi, eax)
AS2( mov SSE2_wordsLeft2, esi)
AS2( lea esi, [edi+esi]) // use to first inner loop
AS2( mov SSE2_ediEnd, esi)
#ifdef _MSC_VER
AS2( lea esi, s_mulTables)
#else
AS2( mov esi, SSE2_pMulTables)
#endif
ASL(0) // first inner loop, 20 words each, 4 iterations
SSE2_STEP(0, 0)
SSE2_STEP(1, 1)
SSE2_STEP(2, 0)
SSE2_STEP(3, 1)
SSE2_STEP(4, 0)
SSE2_STEP(5, 1)
SSE2_STEP(6, 0)
SSE2_STEP(7, 1)
SSE2_STEP(8, 0)
SSE2_STEP(9, 1)
SSE2_STEP(10, 0)
SSE2_STEP(11, 1)
SSE2_STEP(12, 0)
SSE2_STEP(13, 1)
SSE2_STEP(14, 0)
SSE2_STEP(15, 1)
SSE2_STEP(16, 0)
SSE2_STEP(17, 1)
SSE2_STEP(18, 0)
SSE2_STEP(19, 1)
// loop
AS2( add edi, 5*4)
AS2( cmp edi, SSE2_ediEnd)
ASJ( jne, 0, b)
AS2( mov eax, SSE2_input)
AS2( mov ebp, SSE2_output)
AS2( lea edi, [SSE2_uvStart]) // start of v and u
AS2( mov esi, SSE2_wordsLeft2)
ASL(1) // second inner loop, 16 words each, 5 iterations
AS2( movdqa xmm0, [edi+0*20*4])
AS2( movdqa xmm1, [edi+1*20*4])
AS2( movdqa xmm2, [edi+2*20*4])
AS2( movdqa xmm3, [edi+3*20*4])
// S2
AS2( movdqa xmm4, xmm0)
AS2( pand xmm0, xmm2)
AS2( pxor xmm0, xmm3)
AS2( pxor xmm2, xmm1)
AS2( pxor xmm2, xmm0)
AS2( por xmm3, xmm4)
AS2( pxor xmm3, xmm1)
AS2( pxor xmm4, xmm2)
AS2( movdqa xmm1, xmm3)
AS2( por xmm3, xmm4)
AS2( pxor xmm3, xmm0)
AS2( pand xmm0, xmm1)
AS2( pxor xmm4, xmm0)
AS2( pxor xmm1, xmm3)
AS2( pxor xmm1, xmm4)
AS2( pxor xmm4, xmm7)
// xor with v
AS2( pxor xmm2, [edi+80*4])
AS2( pxor xmm3, [edi+80*5])
AS2( pxor xmm1, [edi+80*6])
AS2( pxor xmm4, [edi+80*7])
// exit loop early if less than 16 words left to output
// this is necessary because block size is 20 words, and we output 16 words in each iteration of this loop
AS2( cmp esi, 16)
ASJ( jl, 4, f)
// unpack
AS2( movdqa xmm6, xmm2)
AS2( punpckldq xmm2, xmm3)
AS2( movdqa xmm5, xmm1)
AS2( punpckldq xmm1, xmm4)
AS2( movdqa xmm0, xmm2)
AS2( punpcklqdq xmm2, xmm1)
AS2( punpckhqdq xmm0, xmm1)
AS2( punpckhdq xmm6, xmm3)
AS2( punpckhdq xmm5, xmm4)
AS2( movdqa xmm3, xmm6)
AS2( punpcklqdq xmm6, xmm5)
AS2( punpckhqdq xmm3, xmm5)
// output keystream
AS2( test eax, eax)
ASJ( jz, 3, f)
AS2( test eax, 0xf)
ASJ( jnz, 7, f)
AS2( pxor xmm2, [eax+0*16])
AS2( pxor xmm0, [eax+1*16])
AS2( pxor xmm6, [eax+2*16])
AS2( pxor xmm3, [eax+3*16])
AS2( add eax, 4*16)
ASJ( jmp, 3, f)
ASL(7)
AS2( movdqu xmm1, [eax+0*16])
AS2( pxor xmm2, xmm1)
AS2( movdqu xmm1, [eax+1*16])
AS2( pxor xmm0, xmm1)
AS2( movdqu xmm1, [eax+2*16])
AS2( pxor xmm6, xmm1)
AS2( movdqu xmm1, [eax+3*16])
AS2( pxor xmm3, xmm1)
AS2( add eax, 4*16)
ASL(3)
AS2( test ebp, 0xf)
ASJ( jnz, 8, f)
AS2( movdqa [ebp+0*16], xmm2)
AS2( movdqa [ebp+1*16], xmm0)
AS2( movdqa [ebp+2*16], xmm6)
AS2( movdqa [ebp+3*16], xmm3)
ASJ( jmp, 9, f)
ASL(8)
AS2( movdqu [ebp+0*16], xmm2)
AS2( movdqu [ebp+1*16], xmm0)
AS2( movdqu [ebp+2*16], xmm6)
AS2( movdqu [ebp+3*16], xmm3)
ASL(9)
// loop
AS2( add edi, 4*4)
AS2( add ebp, 4*16)
AS2( sub esi, 16)
ASJ( jnz, 1, b)
// outer loop
AS2( mov esi, SSE2_wordsLeft)
AS2( sub esi, 80)
ASJ( jz, 6, f)
AS2( mov SSE2_wordsLeft, esi)
AS2( mov SSE2_input, eax)
AS2( mov SSE2_output, ebp)
ASJ( jmp, 2, b)
ASL(4) // final output of less than 16 words
AS2( test eax, eax)
ASJ( jz, 5, f)
AS2( movd xmm0, [eax+0*4])
AS2( pxor xmm2, xmm0)
AS2( movd xmm0, [eax+1*4])
AS2( pxor xmm3, xmm0)
AS2( movd xmm0, [eax+2*4])
AS2( pxor xmm1, xmm0)
AS2( movd xmm0, [eax+3*4])
AS2( pxor xmm4, xmm0)
AS2( add eax, 16)
ASL(5)
AS2( movd [ebp+0*4], xmm2)
AS2( movd [ebp+1*4], xmm3)
AS2( movd [ebp+2*4], xmm1)
AS2( movd [ebp+3*4], xmm4)
AS2( sub esi, 4)
ASJ( jz, 6, f)
AS2( add ebp, 16)
AS2( psrldq xmm2, 4)
AS2( psrldq xmm3, 4)
AS2( psrldq xmm1, 4)
AS2( psrldq xmm4, 4)
ASJ( jmp, 4, b)
ASL(6) // save state
AS2( mov ebx, SSE2_state)
AS2( movdqa xmm0, [SSE2_stateCopy+0*16])
AS2( movdqa [ebx+0*16], xmm0)
AS2( movdqa xmm0, [SSE2_stateCopy+1*16])
AS2( movdqa [ebx+1*16], xmm0)
AS2( movq xmm0, QWORD PTR [SSE2_stateCopy+2*16])
AS2( movq QWORD PTR [ebx+2*16], xmm0)
AS2( mov [ebx+10*4], ecx)
AS2( mov [ebx+11*4], edx)
AS1( pop esp)
AS1( pop ebp)
#ifdef __GNUC__
AS1( pop ebx)
".att_syntax prefix;"
:
: "a" (m_state.m_ptr), "c" (iterationCount), "S" (s_mulTables), "D" (output), "d" (input)
: "memory", "cc"
);
#endif
}
else
#endif
{
#if CRYPTOPP_BOOL_X86 | CRYPTOPP_BOOL_X64
#define MUL_A(x) (x = rotlFixed(x, 8), x ^ s_mulTables[byte(x)])
#else
#define MUL_A(x) (((x) << 8) ^ s_mulTables[(x) >> 24])
#endif
#define DIV_A(x) (((x) >> 8) ^ s_mulTables[256 + byte(x)])
#define XMUX(c, x, y) (x ^ (y & (0 - (c & 1))))
#define r1(i) ((i%2) ? reg2 : reg1)
#define r2(i) ((i%2) ? reg1 : reg2)
#define STEP(x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, v, u) \
r2(x0) += XMUX(r1(x0), s##x1, s##x8);\
r1(x0) = rotlFixed(r1(x0) * 0x54655307, 7);\
v = s##x0;\
u = (s##x9 + r2(x0)) ^ r1(x0);\
s##x0 = MUL_A(s##x0) ^ DIV_A(s##x3) ^ s##x9;
#define SOSEMANUK_OUTPUT(x) \
CRYPTOPP_KEYSTREAM_OUTPUT_WORD(x, LITTLE_ENDIAN_ORDER, 0, u2 ^ v0);\
CRYPTOPP_KEYSTREAM_OUTPUT_WORD(x, LITTLE_ENDIAN_ORDER, 1, u3 ^ v1);\
CRYPTOPP_KEYSTREAM_OUTPUT_WORD(x, LITTLE_ENDIAN_ORDER, 2, u1 ^ v2);\
CRYPTOPP_KEYSTREAM_OUTPUT_WORD(x, LITTLE_ENDIAN_ORDER, 3, u4 ^ v3);
#define OUTPUT4 \
S2(0, u0, u1, u2, u3, u4);\
CRYPTOPP_KEYSTREAM_OUTPUT_SWITCH(SOSEMANUK_OUTPUT, 4*4);
word32 s0 = m_state[0];
word32 s1 = m_state[1];
word32 s2 = m_state[2];
word32 s3 = m_state[3];
word32 s4 = m_state[4];
word32 s5 = m_state[5];
word32 s6 = m_state[6];
word32 s7 = m_state[7];
word32 s8 = m_state[8];
word32 s9 = m_state[9];
word32 reg1 = m_state[10];
word32 reg2 = m_state[11];
word32 u0, u1, u2, u3, u4, v0, v1, v2, v3;
do
{
STEP(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, v0, u0)
STEP(1, 2, 3, 4, 5, 6, 7, 8, 9, 0, v1, u1)
STEP(2, 3, 4, 5, 6, 7, 8, 9, 0, 1, v2, u2)
STEP(3, 4, 5, 6, 7, 8, 9, 0, 1, 2, v3, u3)
OUTPUT4
STEP(4, 5, 6, 7, 8, 9, 0, 1, 2, 3, v0, u0)
STEP(5, 6, 7, 8, 9, 0, 1, 2, 3, 4, v1, u1)
STEP(6, 7, 8, 9, 0, 1, 2, 3, 4, 5, v2, u2)
STEP(7, 8, 9, 0, 1, 2, 3, 4, 5, 6, v3, u3)
OUTPUT4
STEP(8, 9, 0, 1, 2, 3, 4, 5, 6, 7, v0, u0)
STEP(9, 0, 1, 2, 3, 4, 5, 6, 7, 8, v1, u1)
STEP(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, v2, u2)
STEP(1, 2, 3, 4, 5, 6, 7, 8, 9, 0, v3, u3)
OUTPUT4
STEP(2, 3, 4, 5, 6, 7, 8, 9, 0, 1, v0, u0)
STEP(3, 4, 5, 6, 7, 8, 9, 0, 1, 2, v1, u1)
STEP(4, 5, 6, 7, 8, 9, 0, 1, 2, 3, v2, u2)
STEP(5, 6, 7, 8, 9, 0, 1, 2, 3, 4, v3, u3)
OUTPUT4
STEP(6, 7, 8, 9, 0, 1, 2, 3, 4, 5, v0, u0)
STEP(7, 8, 9, 0, 1, 2, 3, 4, 5, 6, v1, u1)
STEP(8, 9, 0, 1, 2, 3, 4, 5, 6, 7, v2, u2)
STEP(9, 0, 1, 2, 3, 4, 5, 6, 7, 8, v3, u3)
OUTPUT4
}
while (--iterationCount);
m_state[0] = s0;
m_state[1] = s1;
m_state[2] = s2;
m_state[3] = s3;
m_state[4] = s4;
m_state[5] = s5;
m_state[6] = s6;
m_state[7] = s7;
m_state[8] = s8;
m_state[9] = s9;
m_state[10] = reg1;
m_state[11] = reg2;
}
}
NAMESPACE_END
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