1 files changed, 711 insertions, 0 deletions

diff --git a/CryptoPP/sosemanuk.cpp b/CryptoPP/sosemanuk.cpp
new file mode 100644
index 000000000..08636755e
--- /dev/null
+++ b/CryptoPP/sosemanuk.cpp
@@ -0,0 +1,711 @@
+// sosemanuk.cpp - written and placed in the public domain by Wei Dai
+
+// use "cl /EP /P /DCRYPTOPP_GENERATE_X64_MASM sosemanuk.cpp" to generate MASM code
+
+#include "pch.h"
+
+#ifndef CRYPTOPP_GENERATE_X64_MASM
+
+#include "sosemanuk.h"
+#include "misc.h"
+#include "cpu.h"
+
+#include "serpentp.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+void SosemanukPolicy::CipherSetKey(const NameValuePairs &params, const byte *userKey, size_t keylen)
+{
+	Serpent_KeySchedule(m_key, 24, userKey, keylen);
+}
+
+void SosemanukPolicy::CipherResynchronize(byte *keystreamBuffer, const byte *iv, size_t length)
+{
+	assert(length==16);
+
+	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;
+
+#define XMUX(c, x, y)   (x ^ (y & (0 - (c & 1))))
+	m_state[11] += XMUX(m_state[10], m_state[1], m_state[8]);
+	m_state[10] = rotlFixed(m_state[10] * 0x54655307, 7);
+}
+
+extern "C" {
+word32 s_sosemanukMulTables[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 GetAlignmentOf<word32>();
+}
+
+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
+
+#ifdef CRYPTOPP_X64_MASM_AVAILABLE
+extern "C" {
+void Sosemanuk_OperateKeystream(size_t iterationCount, const byte *input, byte *output, word32 *state);
+}
+#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)
+{
+#endif	// #ifdef CRYPTOPP_GENERATE_X64_MASM
+
+#ifdef CRYPTOPP_X64_MASM_AVAILABLE
+	Sosemanuk_OperateKeystream(iterationCount, input, output, m_state.data());
+	return;
+#endif
+
+#if CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE
+#ifdef CRYPTOPP_GENERATE_X64_MASM
+		ALIGN   8
+	Sosemanuk_OperateKeystream	PROC FRAME
+		rex_push_reg rsi
+		push_reg rdi
+		alloc_stack(80*4*2+12*4+8*WORD_SZ + 2*16+8)
+		save_xmm128 xmm6, 02f0h
+		save_xmm128 xmm7, 0300h
+		.endprolog
+		mov		rdi, r8
+		mov		rax, r9
+#else
+#ifdef __INTEL_COMPILER
+	if (HasSSE2() && !IsP4())	// Intel compiler produces faster code for this algorithm on the P4
+#else
+	if (HasSSE2())
+#endif
+	{
+#ifdef __GNUC__
+	#if CRYPTOPP_BOOL_X64
+		FixedSizeAlignedSecBlock<byte, 80*4*2+12*4+8*WORD_SZ> workspace;
+	#endif
+		__asm__ __volatile__
+		(
+		".intel_syntax noprefix;"
+		AS_PUSH_IF86(	bx)
+#else
+		word32 *state = m_state;
+		AS2(	mov		WORD_REG(ax), state)
+		AS2(	mov		WORD_REG(di), output)
+		AS2(	mov		WORD_REG(dx), input)
+		AS2(	mov		WORD_REG(cx), iterationCount)
+#endif
+#endif	// #ifdef CRYPTOPP_GENERATE_X64_MASM
+
+#if defined(__GNUC__) && CRYPTOPP_BOOL_X64
+	#define SSE2_workspace %5
+#else
+	#define SSE2_workspace WORD_REG(sp)
+#endif
+
+#define SSE2_output			WORD_PTR [SSE2_workspace+1*WORD_SZ]
+#define SSE2_input			WORD_PTR [SSE2_workspace+2*WORD_SZ]
+#define SSE2_wordsLeft		WORD_PTR [SSE2_workspace+3*WORD_SZ]
+#define SSE2_diEnd			WORD_PTR [SSE2_workspace+4*WORD_SZ]
+#define SSE2_pMulTables		WORD_PTR [SSE2_workspace+5*WORD_SZ]
+#define SSE2_state			WORD_PTR [SSE2_workspace+6*WORD_SZ]
+#define SSE2_wordsLeft2		WORD_PTR [SSE2_workspace+7*WORD_SZ]
+#define SSE2_stateCopy		SSE2_workspace + 8*WORD_SZ
+#define	SSE2_uvStart		SSE2_stateCopy + 12*4
+
+#if CRYPTOPP_BOOL_X86
+		AS_PUSH_IF86(	bp)
+		AS2(	mov		AS_REG_6, esp)
+		AS2(	and		esp, -16)
+		AS2(	sub		esp, 80*4*2+12*4+8*WORD_SZ)	// 80 v's, 80 u's, 12 state, 8 locals
+		AS2(	mov		[esp], AS_REG_6)
+#endif
+		AS2(	mov		SSE2_output, WORD_REG(di))
+		AS2(	mov		SSE2_input, WORD_REG(dx))
+		AS2(	mov		SSE2_state, WORD_REG(ax))
+#ifndef _MSC_VER
+		AS2(	mov		SSE2_pMulTables, WORD_REG(si))
+#endif
+		AS2(	lea		WORD_REG(cx), [4*WORD_REG(cx)+WORD_REG(cx)])
+		AS2(	lea		WORD_REG(si), [4*WORD_REG(cx)])
+		AS2(	mov		SSE2_wordsLeft, WORD_REG(si))
+		AS2(	movdqa	xmm0, [WORD_REG(ax)+0*16])		// copy state to stack to save a register
+		AS2(	movdqa	[SSE2_stateCopy+0*16], xmm0)
+		AS2(	movdqa	xmm0, [WORD_REG(ax)+1*16])
+		AS2(	movdqa	[SSE2_stateCopy+1*16], xmm0)
+		AS2(	movq	xmm0, QWORD PTR [WORD_REG(ax)+2*16])
+		AS2(	movq	QWORD PTR [SSE2_stateCopy+2*16], xmm0)
+		AS2(	psrlq	xmm0, 32)
+		AS2(	movd	AS_REG_6d, xmm0)				// s(9)
+		AS2(	mov		ecx, [WORD_REG(ax)+10*4])
+		AS2(	mov		edx, [WORD_REG(ax)+11*4])
+		AS2(	pcmpeqb	xmm7, xmm7)				// all ones
+
+#define s(i)	SSE2_stateCopy + ASM_MOD(i,10)*4
+#define u(j)	WORD_REG(di) + (ASM_MOD(j,4)*20 + (j/4)) * 4
+#define v(j)	WORD_REG(di) + (ASM_MOD(j,4)*20 + (j/4)) * 4 + 80*4
+
+#define R10 ecx
+#define R11 edx
+#define R20 edx
+#define R21 ecx
+// workaround bug in GAS 2.15
+#define R20r WORD_REG(dx)
+#define R21r WORD_REG(cx)
+
+#define SSE2_STEP(i, j)	\
+	AS2(	mov		eax, [s(i+0)])\
+	AS2(	mov		[v(i)], eax)\
+	AS2(	rol		eax, 8)\
+	AS2(	lea		AS_REG_7, [AS_REG_6 + R2##j##r])\
+	AS2(	xor		AS_REG_7d, R1##j)\
+	AS2(	mov		[u(i)], AS_REG_7d)\
+	AS2(	mov		AS_REG_7d, 1)\
+	AS2(	and		AS_REG_7d, R2##j)\
+	AS1(	neg		AS_REG_7d)\
+	AS2(	and		AS_REG_7d, AS_REG_6d)\
+	AS2(	xor		AS_REG_6d, eax)\
+	AS2(	movzx	eax, al)\
+	AS2(	xor		AS_REG_6d, [WORD_REG(si)+WORD_REG(ax)*4])\
+	AS2(	mov		eax, [s(i+3)])\
+	AS2(	xor		AS_REG_7d, [s(i+2)])\
+	AS2(	add		R1##j, AS_REG_7d)\
+	AS2(	movzx	AS_REG_7d, al)\
+	AS2(	shr		eax, 8)\
+	AS2(	xor		AS_REG_6d, [WORD_REG(si)+1024+AS_REG_7*4])\
+	AS2(	xor		AS_REG_6d, eax)\
+	AS2(	imul	R2##j, AS_HEX(54655307))\
+	AS2(	rol		R2##j, 7)\
+	AS2(	mov		[s(i+0)], AS_REG_6d)\
+
+		ASL(2)	// outer loop, each iteration of this processes 80 words
+		AS2(	lea		WORD_REG(di), [SSE2_uvStart])	// start of v and u
+		AS2(	mov		WORD_REG(ax), 80)
+		AS2(	cmp		WORD_REG(si), 80)
+		AS2(	cmovg	WORD_REG(si), WORD_REG(ax))
+		AS2(	mov		SSE2_wordsLeft2, WORD_REG(si))
+		AS2(	lea		WORD_REG(si), [WORD_REG(di)+WORD_REG(si)])		// use to end first inner loop
+		AS2(	mov		SSE2_diEnd, WORD_REG(si))
+#ifdef _MSC_VER
+		AS2(	lea		WORD_REG(si), s_sosemanukMulTables)
+#else
+		AS2(	mov		WORD_REG(si), 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		WORD_REG(di), 5*4)
+		AS2(	cmp		WORD_REG(di), SSE2_diEnd)
+		ASJ(	jne,	0, b)
+
+		AS2(	mov		WORD_REG(ax), SSE2_input)
+		AS2(	mov		AS_REG_7, SSE2_output)
+		AS2(	lea		WORD_REG(di), [SSE2_uvStart])		// start of v and u
+		AS2(	mov		WORD_REG(si), SSE2_wordsLeft2)
+
+		ASL(1)	// second inner loop, 16 words each, 5 iterations
+		AS2(	movdqa	xmm0, [WORD_REG(di)+0*20*4])
+		AS2(	movdqa	xmm2, [WORD_REG(di)+2*20*4])
+		AS2(	movdqa	xmm3, [WORD_REG(di)+3*20*4])
+		AS2(	movdqa	xmm1, [WORD_REG(di)+1*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, [WORD_REG(di)+80*4])
+		AS2(	pxor	xmm3, [WORD_REG(di)+80*5])
+		AS2(	pxor	xmm1, [WORD_REG(di)+80*6])
+		AS2(	pxor	xmm4, [WORD_REG(di)+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		WORD_REG(si), 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
+		AS_XMM_OUTPUT4(SSE2_Sosemanuk_Output, WORD_REG(ax), AS_REG_7, 2,0,6,3, 1, 0,1,2,3, 4)
+
+		// loop
+		AS2(	add		WORD_REG(di), 4*4)
+		AS2(	sub		WORD_REG(si), 16)
+		ASJ(	jnz,	1, b)
+
+		// outer loop
+		AS2(	mov		WORD_REG(si), SSE2_wordsLeft)
+		AS2(	sub		WORD_REG(si), 80)
+		ASJ(	jz,		6, f)
+		AS2(	mov		SSE2_wordsLeft, WORD_REG(si))
+		AS2(	mov		SSE2_input, WORD_REG(ax))
+		AS2(	mov		SSE2_output, AS_REG_7)
+		ASJ(	jmp,	2, b)
+
+		ASL(4)	// final output of less than 16 words
+		AS2(	test	WORD_REG(ax), WORD_REG(ax))
+		ASJ(	jz,		5, f)
+		AS2(	movd	xmm0, dword ptr [WORD_REG(ax)+0*4])
+		AS2(	pxor	xmm2, xmm0)
+		AS2(	movd	xmm0, dword ptr [WORD_REG(ax)+1*4])
+		AS2(	pxor	xmm3, xmm0)
+		AS2(	movd	xmm0, dword ptr [WORD_REG(ax)+2*4])
+		AS2(	pxor	xmm1, xmm0)
+		AS2(	movd	xmm0, dword ptr [WORD_REG(ax)+3*4])
+		AS2(	pxor	xmm4, xmm0)
+		AS2(	add		WORD_REG(ax), 16)
+		ASL(5)
+		AS2(	movd	dword ptr [AS_REG_7+0*4], xmm2)
+		AS2(	movd	dword ptr [AS_REG_7+1*4], xmm3)
+		AS2(	movd	dword ptr [AS_REG_7+2*4], xmm1)
+		AS2(	movd	dword ptr [AS_REG_7+3*4], xmm4)
+		AS2(	sub		WORD_REG(si), 4)
+		ASJ(	jz,		6, f)
+		AS2(	add		AS_REG_7, 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		AS_REG_6, SSE2_state)
+		AS2(	movdqa	xmm0, [SSE2_stateCopy+0*16])
+		AS2(	movdqa	[AS_REG_6+0*16], xmm0)
+		AS2(	movdqa	xmm0, [SSE2_stateCopy+1*16])
+		AS2(	movdqa	[AS_REG_6+1*16], xmm0)
+		AS2(	movq	xmm0, QWORD PTR [SSE2_stateCopy+2*16])
+		AS2(	movq	QWORD PTR [AS_REG_6+2*16], xmm0)
+		AS2(	mov		[AS_REG_6+10*4], ecx)
+		AS2(	mov		[AS_REG_6+11*4], edx)
+
+		AS_POP_IF86(	sp)
+		AS_POP_IF86(	bp)
+
+#ifdef __GNUC__
+		AS_POP_IF86(	bx)
+		".att_syntax prefix;"
+			:
+			: "a" (m_state.m_ptr), "c" (iterationCount), "S" (s_sosemanukMulTables), "D" (output), "d" (input)
+	#if CRYPTOPP_BOOL_X64
+			, "r" (workspace.m_ptr)
+			: "memory", "cc", "%r9", "%r10", "%xmm0", "%xmm1", "%xmm2", "%xmm3", "%xmm4", "%xmm5", "%xmm6", "%xmm7"
+	#else
+			: "memory", "cc"
+	#endif
+		);
+#endif
+#ifdef CRYPTOPP_GENERATE_X64_MASM
+	movdqa	xmm6, [rsp + 02f0h]
+	movdqa	xmm7, [rsp + 0300h]
+	add		rsp, 80*4*2+12*4+8*WORD_SZ + 2*16+8
+	pop		rdi
+	pop		rsi
+	ret
+	Sosemanuk_OperateKeystream ENDP
+#else
+	}
+	else
+#endif
+#endif
+#ifndef CRYPTOPP_GENERATE_X64_MASM
+	{
+#if CRYPTOPP_BOOL_X86 | CRYPTOPP_BOOL_X64
+#define MUL_A(x)    (x = rotlFixed(x, 8), x ^ s_sosemanukMulTables[byte(x)])
+#else
+#define MUL_A(x)    (((x) << 8) ^ s_sosemanukMulTables[(x) >> 24])
+#endif
+
+#define DIV_A(x)    (((x) >> 8) ^ s_sosemanukMulTables[256 + byte(x)])
+
+#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)	\
+		u = (s##x9 + r2(x0)) ^ r1(x0);\
+		v = s##x0;\
+		s##x0 = MUL_A(s##x0) ^ DIV_A(s##x3) ^ s##x9;\
+		r1(x0) += XMUX(r2(x0), s##x2, s##x9);\
+		r2(x0) = rotlFixed(r2(x0) * 0x54655307, 7);\
+
+#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
+
+#endif // #ifndef CRYPTOPP_GENERATE_X64_MASM