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Copy pathAES.cpp
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375 lines (350 loc) · 27.4 KB
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/*
* Copyright (c)2019 ZeroTier, Inc.
*
* Use of this software is governed by the Business Source License included
* in the LICENSE.TXT file in the project's root directory.
*
* Change Date: 2023-01-01
*
* On the date above, in accordance with the Business Source License, use
* of this software will be governed by version 2.0 of the Apache License.
*/
/****/
#include "AES.hpp"
#include "Constants.hpp"
// This file contains the software implementations of AES and GHASH. They're
// only used if your CPU lacks hardware acceleration as the hardware
// accelerated code is 10-20X as fast in most cases.
#ifdef __WINDOWS__
#include <intrin.h>
#endif
namespace ZeroTier {
#ifdef ZT_NO_TYPE_PUNNING
static ZT_ALWAYS_INLINE uint32_t readuint32_t(const void *in)
{
uint32_t v = ((const uint8_t *)in)[0];
v <<= 8;
v |= ((const uint8_t *)in)[1];
v <<= 8;
v |= ((const uint8_t *)in)[2];
v <<= 8;
v |= ((const uint8_t *)in)[3];
return v;
}
static ZT_ALWAYS_INLINE void writeuint32_t(void *out,const uint32_t v)
{
((uint8_t *)out)[0] = (uint8_t)(v >> 24);
((uint8_t *)out)[1] = (uint8_t)(v >> 16);
((uint8_t *)out)[2] = (uint8_t)(v >> 8);
((uint8_t *)out)[3] = (uint8_t)v;
}
#else
#define readuint32_t(i) (Utils::ntoh(*((const uint32_t *)(i))))
#define writeuint32_t(o,v) (*((uint32_t *)(o)) = Utils::hton(v))
#endif
#if (defined(__amd64) || defined(__amd64__) || defined(__x86_64) || defined(__x86_64__) || defined(__AMD64) || defined(__AMD64__) || defined(_M_X64))
static bool _zt_aesni_supported()
{
#ifdef __WINDOWS__
int regs[4];
__cpuid(regs,1);
return ( (((regs[2] >> 25) & 1) != 0) && (((regs[2] >> 19) & 1) != 0) && (((regs[2] >> 1) & 1) != 0) ); // AES-NI, SSE4.1, PCLMUL
#else
uint32_t eax,ebx,ecx,edx;
__asm__ __volatile__ (
"cpuid"
: "=a"(eax),"=b"(ebx),"=c"(ecx),"=d"(edx)
: "a"(1),"c"(0)
);
return ( ((ecx & (1 << 25)) != 0) && ((ecx & (1 << 19)) != 0) && ((ecx & (1 << 1)) != 0) ); // AES-NI, SSE4.1, PCLMUL
#endif
}
const bool AES::HW_ACCEL = _zt_aesni_supported();
#else
const bool AES::HW_ACCEL = false;
#endif
const uint32_t AES::Te0[256] = { 0xc66363a5,0xf87c7c84,0xee777799,0xf67b7b8d,0xfff2f20d,0xd66b6bbd,0xde6f6fb1,0x91c5c554,0x60303050,0x02010103,0xce6767a9,0x562b2b7d,0xe7fefe19,0xb5d7d762,0x4dababe6,0xec76769a,0x8fcaca45,0x1f82829d,0x89c9c940,0xfa7d7d87,0xeffafa15,0xb25959eb,0x8e4747c9,0xfbf0f00b,0x41adadec,0xb3d4d467,0x5fa2a2fd,0x45afafea,0x239c9cbf,0x53a4a4f7,0xe4727296,0x9bc0c05b,0x75b7b7c2,0xe1fdfd1c,0x3d9393ae,0x4c26266a,0x6c36365a,0x7e3f3f41,0xf5f7f702,0x83cccc4f,0x6834345c,0x51a5a5f4,0xd1e5e534,0xf9f1f108,0xe2717193,0xabd8d873,0x62313153,0x2a15153f,0x0804040c,0x95c7c752,0x46232365,0x9dc3c35e,0x30181828,0x379696a1,0x0a05050f,0x2f9a9ab5,0x0e070709,0x24121236,0x1b80809b,0xdfe2e23d,0xcdebeb26,0x4e272769,0x7fb2b2cd,0xea75759f,0x1209091b,0x1d83839e,0x582c2c74,0x341a1a2e,0x361b1b2d,0xdc6e6eb2,0xb45a5aee,0x5ba0a0fb,0xa45252f6,0x763b3b4d,0xb7d6d661,0x7db3b3ce,0x5229297b,0xdde3e33e,0x5e2f2f71,0x13848497,0xa65353f5,0xb9d1d168,0x00000000,0xc1eded2c,0x40202060,0xe3fcfc1f,0x79b1b1c8,0xb65b5bed,0xd46a6abe,0x8dcbcb46,0x67bebed9,0x7239394b,0x944a4ade,0x984c4cd4,0xb05858e8,0x85cfcf4a,0xbbd0d06b,0xc5efef2a,0x4faaaae5,0xedfbfb16,0x864343c5,0x9a4d4dd7,0x66333355,0x11858594,0x8a4545cf,0xe9f9f910,0x04020206,0xfe7f7f81,0xa05050f0,0x783c3c44,0x259f9fba,0x4ba8a8e3,0xa25151f3,0x5da3a3fe,0x804040c0,0x058f8f8a,0x3f9292ad,0x219d9dbc,0x70383848,0xf1f5f504,0x63bcbcdf,0x77b6b6c1,0xafdada75,0x42212163,0x20101030,0xe5ffff1a,0xfdf3f30e,0xbfd2d26d,0x81cdcd4c,0x180c0c14,0x26131335,0xc3ecec2f,0xbe5f5fe1,0x359797a2,0x884444cc,0x2e171739,0x93c4c457,0x55a7a7f2,0xfc7e7e82,0x7a3d3d47,0xc86464ac,0xba5d5de7,0x3219192b,0xe6737395,0xc06060a0,0x19818198,0x9e4f4fd1,0xa3dcdc7f,0x44222266,0x542a2a7e,0x3b9090ab,0x0b888883,0x8c4646ca,0xc7eeee29,0x6bb8b8d3,0x2814143c,0xa7dede79,0xbc5e5ee2,0x160b0b1d,0xaddbdb76,0xdbe0e03b,0x64323256,0x743a3a4e,0x140a0a1e,0x924949db,0x0c06060a,0x4824246c,0xb85c5ce4,0x9fc2c25d,0xbdd3d36e,0x43acacef,0xc46262a6,0x399191a8,0x319595a4,0xd3e4e437,0xf279798b,0xd5e7e732,0x8bc8c843,0x6e373759,0xda6d6db7,0x018d8d8c,0xb1d5d564,0x9c4e4ed2,0x49a9a9e0,0xd86c6cb4,0xac5656fa,0xf3f4f407,0xcfeaea25,0xca6565af,0xf47a7a8e,0x47aeaee9,0x10080818,0x6fbabad5,0xf0787888,0x4a25256f,0x5c2e2e72,0x381c1c24,0x57a6a6f1,0x73b4b4c7,0x97c6c651,0xcbe8e823,0xa1dddd7c,0xe874749c,0x3e1f1f21,0x964b4bdd,0x61bdbddc,0x0d8b8b86,0x0f8a8a85,0xe0707090,0x7c3e3e42,0x71b5b5c4,0xcc6666aa,0x904848d8,0x06030305,0xf7f6f601,0x1c0e0e12,0xc26161a3,0x6a35355f,0xae5757f9,0x69b9b9d0,0x17868691,0x99c1c158,0x3a1d1d27,0x279e9eb9,0xd9e1e138,0xebf8f813,0x2b9898b3,0x22111133,0xd26969bb,0xa9d9d970,0x078e8e89,0x339494a7,0x2d9b9bb6,0x3c1e1e22,0x15878792,0xc9e9e920,0x87cece49,0xaa5555ff,0x50282878,0xa5dfdf7a,0x038c8c8f,0x59a1a1f8,0x09898980,0x1a0d0d17,0x65bfbfda,0xd7e6e631,0x844242c6,0xd06868b8,0x824141c3,0x299999b0,0x5a2d2d77,0x1e0f0f11,0x7bb0b0cb,0xa85454fc,0x6dbbbbd6,0x2c16163a };
const uint32_t AES::Te1[256] = { 0xa5c66363,0x84f87c7c,0x99ee7777,0x8df67b7b,0x0dfff2f2,0xbdd66b6b,0xb1de6f6f,0x5491c5c5,0x50603030,0x03020101,0xa9ce6767,0x7d562b2b,0x19e7fefe,0x62b5d7d7,0xe64dabab,0x9aec7676,0x458fcaca,0x9d1f8282,0x4089c9c9,0x87fa7d7d,0x15effafa,0xebb25959,0xc98e4747,0x0bfbf0f0,0xec41adad,0x67b3d4d4,0xfd5fa2a2,0xea45afaf,0xbf239c9c,0xf753a4a4,0x96e47272,0x5b9bc0c0,0xc275b7b7,0x1ce1fdfd,0xae3d9393,0x6a4c2626,0x5a6c3636,0x417e3f3f,0x02f5f7f7,0x4f83cccc,0x5c683434,0xf451a5a5,0x34d1e5e5,0x08f9f1f1,0x93e27171,0x73abd8d8,0x53623131,0x3f2a1515,0x0c080404,0x5295c7c7,0x65462323,0x5e9dc3c3,0x28301818,0xa1379696,0x0f0a0505,0xb52f9a9a,0x090e0707,0x36241212,0x9b1b8080,0x3ddfe2e2,0x26cdebeb,0x694e2727,0xcd7fb2b2,0x9fea7575,0x1b120909,0x9e1d8383,0x74582c2c,0x2e341a1a,0x2d361b1b,0xb2dc6e6e,0xeeb45a5a,0xfb5ba0a0,0xf6a45252,0x4d763b3b,0x61b7d6d6,0xce7db3b3,0x7b522929,0x3edde3e3,0x715e2f2f,0x97138484,0xf5a65353,0x68b9d1d1,0x00000000,0x2cc1eded,0x60402020,0x1fe3fcfc,0xc879b1b1,0xedb65b5b,0xbed46a6a,0x468dcbcb,0xd967bebe,0x4b723939,0xde944a4a,0xd4984c4c,0xe8b05858,0x4a85cfcf,0x6bbbd0d0,0x2ac5efef,0xe54faaaa,0x16edfbfb,0xc5864343,0xd79a4d4d,0x55663333,0x94118585,0xcf8a4545,0x10e9f9f9,0x06040202,0x81fe7f7f,0xf0a05050,0x44783c3c,0xba259f9f,0xe34ba8a8,0xf3a25151,0xfe5da3a3,0xc0804040,0x8a058f8f,0xad3f9292,0xbc219d9d,0x48703838,0x04f1f5f5,0xdf63bcbc,0xc177b6b6,0x75afdada,0x63422121,0x30201010,0x1ae5ffff,0x0efdf3f3,0x6dbfd2d2,0x4c81cdcd,0x14180c0c,0x35261313,0x2fc3ecec,0xe1be5f5f,0xa2359797,0xcc884444,0x392e1717,0x5793c4c4,0xf255a7a7,0x82fc7e7e,0x477a3d3d,0xacc86464,0xe7ba5d5d,0x2b321919,0x95e67373,0xa0c06060,0x98198181,0xd19e4f4f,0x7fa3dcdc,0x66442222,0x7e542a2a,0xab3b9090,0x830b8888,0xca8c4646,0x29c7eeee,0xd36bb8b8,0x3c281414,0x79a7dede,0xe2bc5e5e,0x1d160b0b,0x76addbdb,0x3bdbe0e0,0x56643232,0x4e743a3a,0x1e140a0a,0xdb924949,0x0a0c0606,0x6c482424,0xe4b85c5c,0x5d9fc2c2,0x6ebdd3d3,0xef43acac,0xa6c46262,0xa8399191,0xa4319595,0x37d3e4e4,0x8bf27979,0x32d5e7e7,0x438bc8c8,0x596e3737,0xb7da6d6d,0x8c018d8d,0x64b1d5d5,0xd29c4e4e,0xe049a9a9,0xb4d86c6c,0xfaac5656,0x07f3f4f4,0x25cfeaea,0xafca6565,0x8ef47a7a,0xe947aeae,0x18100808,0xd56fbaba,0x88f07878,0x6f4a2525,0x725c2e2e,0x24381c1c,0xf157a6a6,0xc773b4b4,0x5197c6c6,0x23cbe8e8,0x7ca1dddd,0x9ce87474,0x213e1f1f,0xdd964b4b,0xdc61bdbd,0x860d8b8b,0x850f8a8a,0x90e07070,0x427c3e3e,0xc471b5b5,0xaacc6666,0xd8904848,0x05060303,0x01f7f6f6,0x121c0e0e,0xa3c26161,0x5f6a3535,0xf9ae5757,0xd069b9b9,0x91178686,0x5899c1c1,0x273a1d1d,0xb9279e9e,0x38d9e1e1,0x13ebf8f8,0xb32b9898,0x33221111,0xbbd26969,0x70a9d9d9,0x89078e8e,0xa7339494,0xb62d9b9b,0x223c1e1e,0x92158787,0x20c9e9e9,0x4987cece,0xffaa5555,0x78502828,0x7aa5dfdf,0x8f038c8c,0xf859a1a1,0x80098989,0x171a0d0d,0xda65bfbf,0x31d7e6e6,0xc6844242,0xb8d06868,0xc3824141,0xb0299999,0x775a2d2d,0x111e0f0f,0xcb7bb0b0,0xfca85454,0xd66dbbbb,0x3a2c1616 };
const uint32_t AES::Te2[256] = { 0x63a5c663,0x7c84f87c,0x7799ee77,0x7b8df67b,0xf20dfff2,0x6bbdd66b,0x6fb1de6f,0xc55491c5,0x30506030,0x01030201,0x67a9ce67,0x2b7d562b,0xfe19e7fe,0xd762b5d7,0xabe64dab,0x769aec76,0xca458fca,0x829d1f82,0xc94089c9,0x7d87fa7d,0xfa15effa,0x59ebb259,0x47c98e47,0xf00bfbf0,0xadec41ad,0xd467b3d4,0xa2fd5fa2,0xafea45af,0x9cbf239c,0xa4f753a4,0x7296e472,0xc05b9bc0,0xb7c275b7,0xfd1ce1fd,0x93ae3d93,0x266a4c26,0x365a6c36,0x3f417e3f,0xf702f5f7,0xcc4f83cc,0x345c6834,0xa5f451a5,0xe534d1e5,0xf108f9f1,0x7193e271,0xd873abd8,0x31536231,0x153f2a15,0x040c0804,0xc75295c7,0x23654623,0xc35e9dc3,0x18283018,0x96a13796,0x050f0a05,0x9ab52f9a,0x07090e07,0x12362412,0x809b1b80,0xe23ddfe2,0xeb26cdeb,0x27694e27,0xb2cd7fb2,0x759fea75,0x091b1209,0x839e1d83,0x2c74582c,0x1a2e341a,0x1b2d361b,0x6eb2dc6e,0x5aeeb45a,0xa0fb5ba0,0x52f6a452,0x3b4d763b,0xd661b7d6,0xb3ce7db3,0x297b5229,0xe33edde3,0x2f715e2f,0x84971384,0x53f5a653,0xd168b9d1,0x00000000,0xed2cc1ed,0x20604020,0xfc1fe3fc,0xb1c879b1,0x5bedb65b,0x6abed46a,0xcb468dcb,0xbed967be,0x394b7239,0x4ade944a,0x4cd4984c,0x58e8b058,0xcf4a85cf,0xd06bbbd0,0xef2ac5ef,0xaae54faa,0xfb16edfb,0x43c58643,0x4dd79a4d,0x33556633,0x85941185,0x45cf8a45,0xf910e9f9,0x02060402,0x7f81fe7f,0x50f0a050,0x3c44783c,0x9fba259f,0xa8e34ba8,0x51f3a251,0xa3fe5da3,0x40c08040,0x8f8a058f,0x92ad3f92,0x9dbc219d,0x38487038,0xf504f1f5,0xbcdf63bc,0xb6c177b6,0xda75afda,0x21634221,0x10302010,0xff1ae5ff,0xf30efdf3,0xd26dbfd2,0xcd4c81cd,0x0c14180c,0x13352613,0xec2fc3ec,0x5fe1be5f,0x97a23597,0x44cc8844,0x17392e17,0xc45793c4,0xa7f255a7,0x7e82fc7e,0x3d477a3d,0x64acc864,0x5de7ba5d,0x192b3219,0x7395e673,0x60a0c060,0x81981981,0x4fd19e4f,0xdc7fa3dc,0x22664422,0x2a7e542a,0x90ab3b90,0x88830b88,0x46ca8c46,0xee29c7ee,0xb8d36bb8,0x143c2814,0xde79a7de,0x5ee2bc5e,0x0b1d160b,0xdb76addb,0xe03bdbe0,0x32566432,0x3a4e743a,0x0a1e140a,0x49db9249,0x060a0c06,0x246c4824,0x5ce4b85c,0xc25d9fc2,0xd36ebdd3,0xacef43ac,0x62a6c462,0x91a83991,0x95a43195,0xe437d3e4,0x798bf279,0xe732d5e7,0xc8438bc8,0x37596e37,0x6db7da6d,0x8d8c018d,0xd564b1d5,0x4ed29c4e,0xa9e049a9,0x6cb4d86c,0x56faac56,0xf407f3f4,0xea25cfea,0x65afca65,0x7a8ef47a,0xaee947ae,0x08181008,0xbad56fba,0x7888f078,0x256f4a25,0x2e725c2e,0x1c24381c,0xa6f157a6,0xb4c773b4,0xc65197c6,0xe823cbe8,0xdd7ca1dd,0x749ce874,0x1f213e1f,0x4bdd964b,0xbddc61bd,0x8b860d8b,0x8a850f8a,0x7090e070,0x3e427c3e,0xb5c471b5,0x66aacc66,0x48d89048,0x03050603,0xf601f7f6,0x0e121c0e,0x61a3c261,0x355f6a35,0x57f9ae57,0xb9d069b9,0x86911786,0xc15899c1,0x1d273a1d,0x9eb9279e,0xe138d9e1,0xf813ebf8,0x98b32b98,0x11332211,0x69bbd269,0xd970a9d9,0x8e89078e,0x94a73394,0x9bb62d9b,0x1e223c1e,0x87921587,0xe920c9e9,0xce4987ce,0x55ffaa55,0x28785028,0xdf7aa5df,0x8c8f038c,0xa1f859a1,0x89800989,0x0d171a0d,0xbfda65bf,0xe631d7e6,0x42c68442,0x68b8d068,0x41c38241,0x99b02999,0x2d775a2d,0x0f111e0f,0xb0cb7bb0,0x54fca854,0xbbd66dbb,0x163a2c16 };
const uint32_t AES::Te3[256] = { 0x6363a5c6,0x7c7c84f8,0x777799ee,0x7b7b8df6,0xf2f20dff,0x6b6bbdd6,0x6f6fb1de,0xc5c55491,0x30305060,0x01010302,0x6767a9ce,0x2b2b7d56,0xfefe19e7,0xd7d762b5,0xababe64d,0x76769aec,0xcaca458f,0x82829d1f,0xc9c94089,0x7d7d87fa,0xfafa15ef,0x5959ebb2,0x4747c98e,0xf0f00bfb,0xadadec41,0xd4d467b3,0xa2a2fd5f,0xafafea45,0x9c9cbf23,0xa4a4f753,0x727296e4,0xc0c05b9b,0xb7b7c275,0xfdfd1ce1,0x9393ae3d,0x26266a4c,0x36365a6c,0x3f3f417e,0xf7f702f5,0xcccc4f83,0x34345c68,0xa5a5f451,0xe5e534d1,0xf1f108f9,0x717193e2,0xd8d873ab,0x31315362,0x15153f2a,0x04040c08,0xc7c75295,0x23236546,0xc3c35e9d,0x18182830,0x9696a137,0x05050f0a,0x9a9ab52f,0x0707090e,0x12123624,0x80809b1b,0xe2e23ddf,0xebeb26cd,0x2727694e,0xb2b2cd7f,0x75759fea,0x09091b12,0x83839e1d,0x2c2c7458,0x1a1a2e34,0x1b1b2d36,0x6e6eb2dc,0x5a5aeeb4,0xa0a0fb5b,0x5252f6a4,0x3b3b4d76,0xd6d661b7,0xb3b3ce7d,0x29297b52,0xe3e33edd,0x2f2f715e,0x84849713,0x5353f5a6,0xd1d168b9,0x00000000,0xeded2cc1,0x20206040,0xfcfc1fe3,0xb1b1c879,0x5b5bedb6,0x6a6abed4,0xcbcb468d,0xbebed967,0x39394b72,0x4a4ade94,0x4c4cd498,0x5858e8b0,0xcfcf4a85,0xd0d06bbb,0xefef2ac5,0xaaaae54f,0xfbfb16ed,0x4343c586,0x4d4dd79a,0x33335566,0x85859411,0x4545cf8a,0xf9f910e9,0x02020604,0x7f7f81fe,0x5050f0a0,0x3c3c4478,0x9f9fba25,0xa8a8e34b,0x5151f3a2,0xa3a3fe5d,0x4040c080,0x8f8f8a05,0x9292ad3f,0x9d9dbc21,0x38384870,0xf5f504f1,0xbcbcdf63,0xb6b6c177,0xdada75af,0x21216342,0x10103020,0xffff1ae5,0xf3f30efd,0xd2d26dbf,0xcdcd4c81,0x0c0c1418,0x13133526,0xecec2fc3,0x5f5fe1be,0x9797a235,0x4444cc88,0x1717392e,0xc4c45793,0xa7a7f255,0x7e7e82fc,0x3d3d477a,0x6464acc8,0x5d5de7ba,0x19192b32,0x737395e6,0x6060a0c0,0x81819819,0x4f4fd19e,0xdcdc7fa3,0x22226644,0x2a2a7e54,0x9090ab3b,0x8888830b,0x4646ca8c,0xeeee29c7,0xb8b8d36b,0x14143c28,0xdede79a7,0x5e5ee2bc,0x0b0b1d16,0xdbdb76ad,0xe0e03bdb,0x32325664,0x3a3a4e74,0x0a0a1e14,0x4949db92,0x06060a0c,0x24246c48,0x5c5ce4b8,0xc2c25d9f,0xd3d36ebd,0xacacef43,0x6262a6c4,0x9191a839,0x9595a431,0xe4e437d3,0x79798bf2,0xe7e732d5,0xc8c8438b,0x3737596e,0x6d6db7da,0x8d8d8c01,0xd5d564b1,0x4e4ed29c,0xa9a9e049,0x6c6cb4d8,0x5656faac,0xf4f407f3,0xeaea25cf,0x6565afca,0x7a7a8ef4,0xaeaee947,0x08081810,0xbabad56f,0x787888f0,0x25256f4a,0x2e2e725c,0x1c1c2438,0xa6a6f157,0xb4b4c773,0xc6c65197,0xe8e823cb,0xdddd7ca1,0x74749ce8,0x1f1f213e,0x4b4bdd96,0xbdbddc61,0x8b8b860d,0x8a8a850f,0x707090e0,0x3e3e427c,0xb5b5c471,0x6666aacc,0x4848d890,0x03030506,0xf6f601f7,0x0e0e121c,0x6161a3c2,0x35355f6a,0x5757f9ae,0xb9b9d069,0x86869117,0xc1c15899,0x1d1d273a,0x9e9eb927,0xe1e138d9,0xf8f813eb,0x9898b32b,0x11113322,0x6969bbd2,0xd9d970a9,0x8e8e8907,0x9494a733,0x9b9bb62d,0x1e1e223c,0x87879215,0xe9e920c9,0xcece4987,0x5555ffaa,0x28287850,0xdfdf7aa5,0x8c8c8f03,0xa1a1f859,0x89898009,0x0d0d171a,0xbfbfda65,0xe6e631d7,0x4242c684,0x6868b8d0,0x4141c382,0x9999b029,0x2d2d775a,0x0f0f111e,0xb0b0cb7b,0x5454fca8,0xbbbbd66d,0x16163a2c };
const uint32_t AES::rcon[10] = { 0x01000000,0x02000000,0x04000000,0x08000000,0x10000000,0x20000000,0x40000000,0x80000000,0x1B000000,0x36000000 };
void AES::_initSW(const uint8_t key[32])
{
uint32_t *rk = _k.sw.ek;
rk[0] = readuint32_t(key);
rk[1] = readuint32_t(key + 4);
rk[2] = readuint32_t(key + 8);
rk[3] = readuint32_t(key + 12);
rk[4] = readuint32_t(key + 16);
rk[5] = readuint32_t(key + 20);
rk[6] = readuint32_t(key + 24);
rk[7] = readuint32_t(key + 28);
for(int i=0;;) {
uint32_t temp = rk[7];
rk[8] = rk[0] ^ (Te2[(temp >> 16) & 0xff] & 0xff000000) ^ (Te3[(temp >> 8) & 0xff] & 0x00ff0000) ^ (Te0[(temp) & 0xff] & 0x0000ff00) ^ (Te1[(temp >> 24)] & 0x000000ff) ^ rcon[i];
rk[9] = rk[1] ^ rk[8];
rk[10] = rk[2] ^ rk[9];
rk[11] = rk[3] ^ rk[10];
if (++i == 7)
break;
temp = rk[11];
rk[12] = rk[4] ^ (Te2[(temp >> 24)] & 0xff000000) ^ (Te3[(temp >> 16) & 0xff] & 0x00ff0000) ^ (Te0[(temp >> 8) & 0xff] & 0x0000ff00) ^ (Te1[(temp) & 0xff] & 0x000000ff);
rk[13] = rk[5] ^ rk[12];
rk[14] = rk[6] ^ rk[13];
rk[15] = rk[7] ^ rk[14];
rk += 8;
}
uint64_t zero[2]; zero[0] = 0; zero[1] = 0;
_encryptSW((const uint8_t *)zero,(uint8_t *)_k.sw.h);
_k.sw.h[0] = Utils::ntoh(_k.sw.h[0]);
_k.sw.h[1] = Utils::ntoh(_k.sw.h[1]);
}
void AES::_encryptSW(const uint8_t in[16],uint8_t out[16]) const
{
const uint32_t *const rk = _k.sw.ek;
uint32_t s0 = readuint32_t(in) ^ rk[0];
uint32_t s1 = readuint32_t(in + 4) ^ rk[1];
uint32_t s2 = readuint32_t(in + 8) ^ rk[2];
uint32_t s3 = readuint32_t(in + 12) ^ rk[3];
uint32_t t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >> 8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[4];
uint32_t t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >> 8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[5];
uint32_t t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >> 8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[6];
uint32_t t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >> 8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[7];
s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >> 8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[8];
s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >> 8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[9];
s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >> 8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[10];
s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >> 8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[11];
t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >> 8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[12];
t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >> 8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[13];
t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >> 8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[14];
t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >> 8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[15];
s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >> 8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[16];
s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >> 8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[17];
s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >> 8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[18];
s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >> 8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[19];
t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >> 8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[20];
t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >> 8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[21];
t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >> 8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[22];
t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >> 8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[23];
s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >> 8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[24];
s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >> 8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[25];
s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >> 8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[26];
s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >> 8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[27];
t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >> 8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[28];
t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >> 8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[29];
t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >> 8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[30];
t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >> 8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[31];
s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >> 8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[32];
s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >> 8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[33];
s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >> 8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[34];
s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >> 8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[35];
t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >> 8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[36];
t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >> 8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[37];
t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >> 8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[38];
t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >> 8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[39];
s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >> 8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[40];
s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >> 8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[41];
s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >> 8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[42];
s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >> 8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[43];
t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >> 8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[44];
t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >> 8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[45];
t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >> 8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[46];
t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >> 8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[47];
s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >> 8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[48];
s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >> 8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[49];
s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >> 8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[50];
s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >> 8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[51];
t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >> 8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[52];
t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >> 8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[53];
t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >> 8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[54];
t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >> 8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[55];
writeuint32_t(out,(Te2[(t0 >> 24)] & 0xff000000) ^ (Te3[(t1 >> 16) & 0xff] & 0x00ff0000) ^ (Te0[(t2 >> 8) & 0xff] & 0x0000ff00) ^ (Te1[(t3) & 0xff] & 0x000000ff) ^ rk[56]);
writeuint32_t(out + 4,(Te2[(t1 >> 24)] & 0xff000000) ^ (Te3[(t2 >> 16) & 0xff] & 0x00ff0000) ^ (Te0[(t3 >> 8) & 0xff] & 0x0000ff00) ^ (Te1[(t0) & 0xff] & 0x000000ff) ^ rk[57]);
writeuint32_t(out + 8,(Te2[(t2 >> 24)] & 0xff000000) ^ (Te3[(t3 >> 16) & 0xff] & 0x00ff0000) ^ (Te0[(t0 >> 8) & 0xff] & 0x0000ff00) ^ (Te1[(t1) & 0xff] & 0x000000ff) ^ rk[58]);
writeuint32_t(out + 12,(Te2[(t3 >> 24)] & 0xff000000) ^ (Te3[(t0 >> 16) & 0xff] & 0x00ff0000) ^ (Te0[(t1 >> 8) & 0xff] & 0x0000ff00) ^ (Te1[(t2) & 0xff] & 0x000000ff) ^ rk[59]);
}
#if (defined(__GNUC__) || defined(__clang)) && (defined(__amd64) || defined(__amd64__) || defined(__x86_64) || defined(__x86_64__) || defined(__AMD64) || defined(__AMD64__) || defined(_M_X64) || defined(__aarch64__))
#if defined(__SIZEOF_INT128__)
typedef unsigned __int128 uint128_t;
#else
typedef unsigned uint128_t __attribute__((mode(TI)));
#endif
static ZT_ALWAYS_INLINE void s_bmul64(const uint64_t x,const uint64_t y,uint64_t &r_high,uint64_t &r_low)
{
static uint128_t m1 = (uint128_t)0x2108421084210842ULL << 64 | 0x1084210842108421ULL;
static uint128_t m2 = (uint128_t)0x4210842108421084ULL << 64 | 0x2108421084210842ULL;
static uint128_t m3 = (uint128_t)0x8421084210842108ULL << 64 | 0x4210842108421084ULL;
static uint128_t m4 = (uint128_t)0x0842108421084210ULL << 64 | 0x8421084210842108ULL;
static uint128_t m5 = (uint128_t)0x1084210842108421ULL << 64 | 0x0842108421084210ULL;
uint128_t x1 = x & m1;
uint128_t y1 = y & m1;
uint128_t x2 = x & m2;
uint128_t y2 = y & m2;
uint128_t x3 = x & m3;
uint128_t y3 = y & m3;
uint128_t x4 = x & m4;
uint128_t y4 = y & m4;
uint128_t x5 = x & m5;
uint128_t y5 = y & m5;
uint128_t z = (x1 * y1) ^ (x2 * y5) ^ (x3 * y4) ^ (x4 * y3) ^ (x5 * y2);
uint128_t r = z & m1;
z = (x1 * y2) ^ (x2 * y1) ^ (x3 * y5) ^ (x4 * y4) ^ (x5 * y3);
r |= z & m2;
z = (x1 * y3) ^ (x2 * y2) ^ (x3 * y1) ^ (x4 * y5) ^ (x5 * y4);
r |= z & m3;
z = (x1 * y4) ^ (x2 * y3) ^ (x3 * y2) ^ (x4 * y1) ^ (x5 * y5);
r |= z & m4;
z = (x1 * y5) ^ (x2 * y4) ^ (x3 * y3) ^ (x4 * y2) ^ (x5 * y1);
r |= z & m5;
r_high = (uint64_t)(r >> 64);
r_low = (uint64_t)r;
}
static ZT_ALWAYS_INLINE void s_gfmul(const uint64_t h_high,const uint64_t h_low,uint64_t &y0, uint64_t &y1)
{
uint64_t z2_low,z2_high,z0_low,z0_high,z1a_low,z1a_high;
uint64_t y_high = Utils::ntoh(y0);
uint64_t y_low = Utils::ntoh(y1);
s_bmul64(y_high,h_high,z2_high,z2_low);
s_bmul64(y_low,h_low,z0_high,z0_low);
s_bmul64(y_high ^ y_low,h_high ^ h_low,z1a_high,z1a_low);
z1a_high ^= z2_high ^ z0_high;
z1a_low ^= z2_low ^ z0_low;
uint128_t z_high = ((uint128_t)z2_high << 64) | (z2_low ^ z1a_high);
uint128_t z_low = (((uint128_t)z0_high << 64) | z0_low) ^ (((uint128_t)z1a_low) << 64);
z_high = (z_high << 1) | (z_low >> 127);
z_low <<= 1;
z_low ^= (z_low << 127) ^ (z_low << 126) ^ (z_low << 121);
z_high ^= z_low ^ (z_low >> 1) ^ (z_low >> 2) ^ (z_low >> 7);
y1 = Utils::hton((uint64_t)z_high);
y0 = Utils::hton((uint64_t)(z_high >> 64));
}
#else
static ZT_ALWAYS_INLINE void s_bmul32(uint32_t x,uint32_t y,uint32_t &r_high,uint32_t &r_low)
{
const uint32_t m1 = (uint32_t)0x11111111;
const uint32_t m2 = (uint32_t)0x22222222;
const uint32_t m4 = (uint32_t)0x44444444;
const uint32_t m8 = (uint32_t)0x88888888;
uint32_t x0 = x & m1;
uint32_t x1 = x & m2;
uint32_t x2 = x & m4;
uint32_t x3 = x & m8;
uint32_t y0 = y & m1;
uint32_t y1 = y & m2;
uint32_t y2 = y & m4;
uint32_t y3 = y & m8;
uint64_t z0 = ((uint64_t)x0 * y0) ^ ((uint64_t)x1 * y3) ^ ((uint64_t)x2 * y2) ^ ((uint64_t)x3 * y1);
uint64_t z1 = ((uint64_t)x0 * y1) ^ ((uint64_t)x1 * y0) ^ ((uint64_t)x2 * y3) ^ ((uint64_t)x3 * y2);
uint64_t z2 = ((uint64_t)x0 * y2) ^ ((uint64_t)x1 * y1) ^ ((uint64_t)x2 * y0) ^ ((uint64_t)x3 * y3);
uint64_t z3 = ((uint64_t)x0 * y3) ^ ((uint64_t)x1 * y2) ^ ((uint64_t)x2 * y1) ^ ((uint64_t)x3 * y0);
z0 &= ((uint64_t)m1 << 32) | m1;
z1 &= ((uint64_t)m2 << 32) | m2;
z2 &= ((uint64_t)m4 << 32) | m4;
z3 &= ((uint64_t)m8 << 32) | m8;
uint64_t z = z0 | z1 | z2 | z3;
r_high = (uint32_t)(z >> 32);
r_low = (uint32_t)z;
}
static ZT_ALWAYS_INLINE void s_gfmul(const uint64_t h_high,const uint64_t h_low,uint64_t &y0,uint64_t &y1)
{
uint32_t h_high_h = (uint32_t)(h_high >> 32);
uint32_t h_high_l = (uint32_t)h_high;
uint32_t h_low_h = (uint32_t)(h_low >> 32);
uint32_t h_low_l = (uint32_t)h_low;
uint32_t h_highXlow_h = h_high_h ^ h_low_h;
uint32_t h_highXlow_l = h_high_l ^ h_low_l;
uint64_t y_low = Utils::ntoh(y0);
uint64_t y_high = Utils::ntoh(y1);
uint32_t ci_low_h = (uint32_t)(y_high >> 32);
uint32_t ci_low_l = (uint32_t)y_high;
uint32_t ci_high_h = (uint32_t)(y_low >> 32);
uint32_t ci_high_l = (uint32_t)y_low;
uint32_t ci_highXlow_h = ci_high_h ^ ci_low_h;
uint32_t ci_highXlow_l = ci_high_l ^ ci_low_l;
uint32_t a_a_h,a_a_l,a_b_h,a_b_l,a_c_h,a_c_l;
s_bmul32(ci_high_h,h_high_h,a_a_h,a_a_l);
s_bmul32(ci_high_l,h_high_l,a_b_h,a_b_l);
s_bmul32(ci_high_h ^ ci_high_l,h_high_h ^ h_high_l,a_c_h,a_c_l);
a_c_h ^= a_a_h ^ a_b_h;
a_c_l ^= a_a_l ^ a_b_l;
a_a_l ^= a_c_h;
a_b_h ^= a_c_l;
uint32_t b_a_h,b_a_l,b_b_h,b_b_l,b_c_h,b_c_l;
s_bmul32(ci_low_h,h_low_h,b_a_h,b_a_l);
s_bmul32(ci_low_l,h_low_l,b_b_h,b_b_l);
s_bmul32(ci_low_h ^ ci_low_l,h_low_h ^ h_low_l,b_c_h,b_c_l);
b_c_h ^= b_a_h ^ b_b_h;
b_c_l ^= b_a_l ^ b_b_l;
b_a_l ^= b_c_h;
b_b_h ^= b_c_l;
uint32_t c_a_h,c_a_l,c_b_h,c_b_l,c_c_h,c_c_l;
s_bmul32(ci_highXlow_h,h_highXlow_h,c_a_h,c_a_l);
s_bmul32(ci_highXlow_l,h_highXlow_l,c_b_h,c_b_l);
s_bmul32(ci_highXlow_h ^ ci_highXlow_l, h_highXlow_h ^ h_highXlow_l,c_c_h,c_c_l);
c_c_h ^= c_a_h ^ c_b_h;
c_c_l ^= c_a_l ^ c_b_l;
c_a_l ^= c_c_h;
c_b_h ^= c_c_l;
c_a_h ^= b_a_h ^ a_a_h;
c_a_l ^= b_a_l ^ a_a_l;
c_b_h ^= b_b_h ^ a_b_h;
c_b_l ^= b_b_l ^ a_b_l;
uint64_t z_high_h = ((uint64_t)a_a_h << 32) | a_a_l;
uint64_t z_high_l = (((uint64_t)a_b_h << 32) | a_b_l) ^ (((uint64_t)c_a_h << 32) | c_a_l);
uint64_t z_low_h = (((uint64_t)b_a_h << 32) | b_a_l) ^ (((uint64_t)c_b_h << 32) | c_b_l);
uint64_t z_low_l = ((uint64_t)b_b_h << 32) | b_b_l;
z_high_h = z_high_h << 1 | z_high_l >> 63;
z_high_l = z_high_l << 1 | z_low_h >> 63;
z_low_h = z_low_h << 1 | z_low_l >> 63;
z_low_l <<= 1;
z_low_h ^= (z_low_l << 63) ^ (z_low_l << 62) ^ (z_low_l << 57);
z_high_h ^= z_low_h ^ (z_low_h >> 1) ^ (z_low_h >> 2) ^ (z_low_h >> 7);
z_high_l ^= z_low_l ^ (z_low_l >> 1) ^ (z_low_l >> 2) ^ (z_low_l >> 7) ^ (z_low_h << 63) ^ (z_low_h << 62) ^ (z_low_h << 57);
y0 = Utils::hton(z_high_h);
y1 = Utils::hton(z_high_l);
}
#endif
void AES::_gmacSW(const uint8_t iv[12],const uint8_t *in,unsigned int len,uint8_t out[16]) const
{
const uint64_t h0 = _k.sw.h[0];
const uint64_t h1 = _k.sw.h[1];
const uint64_t lpad = Utils::hton((uint64_t)len * 8);
uint64_t y0 = 0,y1 = 0;
while (len >= 16) {
#ifdef ZT_NO_TYPE_PUNNING
for(unsigned int i=0;i<8;++i) ((uint8_t *)&y0)[i] ^= *(in++);
for(unsigned int i=0;i<8;++i) ((uint8_t *)&y1)[i] ^= *(in++);
#else
y0 ^= *((const uint64_t *)in);
in += 8;
y1 ^= *((const uint64_t *)in);
in += 8;
#endif
s_gfmul(h0,h1,y0,y1);
len -= 16;
}
if (len) {
uint64_t last[2] = { 0,0 };
for(unsigned int i=0;i<len;++i) ((uint8_t *)last)[i] = in[i];
y0 ^= last[0];
y1 ^= last[1];
s_gfmul(h0,h1,y0,y1);
}
y0 ^= lpad;
s_gfmul(h0,h1,y0,y1);
uint64_t iv2[2];
for(unsigned int i=0;i<12;++i) ((uint8_t *)iv2)[i] = iv[i];
((uint8_t *)iv2)[12] = 0;
((uint8_t *)iv2)[13] = 0;
((uint8_t *)iv2)[14] = 0;
((uint8_t *)iv2)[15] = 1;
_encryptSW((const uint8_t *)iv2,(uint8_t *)iv2);
#ifdef ZT_NO_TYPE_PUNNING
for(unsigned int i=0;i<8;++i) out[i] = ((const uint8_t *)&y0)[i] ^ ((const uint8_t *)iv2)[i];
for(unsigned int i=8;i<16;++i) out[i] = ((const uint8_t *)&y1)[i-8] ^ ((const uint8_t *)iv2)[i];
#else
((uint64_t *)out)[0] = y0 ^ iv2[0];
((uint64_t *)out)[1] = y1 ^ iv2[1];
#endif
}
} // namespace ZeroTier