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present.cpp
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present.cpp
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#include "present.h"
#define GenerateRoundKeys(round_key, key, round_counter) KeyUpdateFull((round_key), (key), (round_counter))
#define KeyUpdate(round_key, round_counter) KeyUpdateFull((round_key), (round_key), (round_counter))
// actually is (sbox[] << 4)
static const uint8_t sbox[16] =
{
0xC0, 0x50, 0x60, 0xB0, 0x90, 0x00, 0xA0, 0xD0, 0x30, 0xE0, 0xF0, 0x80, 0x40, 0x70, 0x10, 0x20,
};
// 0 1 2 3 4 5 6 7 ---- 0 4 1 5 2 6 3 7
static const uint8_t mix_row_0[256] =
{
0xF0, 0xB1, 0xB4, 0xE5, 0xE1, 0xA0, 0xE4, 0xF1, 0xA5, 0xF4, 0xF5, 0xE0, 0xB0, 0xB5, 0xA1, 0xA4,
0x72, 0x33, 0x36, 0x67, 0x63, 0x22, 0x66, 0x73, 0x27, 0x76, 0x77, 0x62, 0x32, 0x37, 0x23, 0x26,
0x78, 0x39, 0x3C, 0x6D, 0x69, 0x28, 0x6C, 0x79, 0x2D, 0x7C, 0x7D, 0x68, 0x38, 0x3D, 0x29, 0x2C,
0xDA, 0x9B, 0x9E, 0xCF, 0xCB, 0x8A, 0xCE, 0xDB, 0x8F, 0xDE, 0xDF, 0xCA, 0x9A, 0x9F, 0x8B, 0x8E,
0xD2, 0x93, 0x96, 0xC7, 0xC3, 0x82, 0xC6, 0xD3, 0x87, 0xD6, 0xD7, 0xC2, 0x92, 0x97, 0x83, 0x86,
0x50, 0x11, 0x14, 0x45, 0x41, 0x00, 0x44, 0x51, 0x05, 0x54, 0x55, 0x40, 0x10, 0x15, 0x01, 0x04,
0xD8, 0x99, 0x9C, 0xCD, 0xC9, 0x88, 0xCC, 0xD9, 0x8D, 0xDC, 0xDD, 0xC8, 0x98, 0x9D, 0x89, 0x8C,
0xF2, 0xB3, 0xB6, 0xE7, 0xE3, 0xA2, 0xE6, 0xF3, 0xA7, 0xF6, 0xF7, 0xE2, 0xB2, 0xB7, 0xA3, 0xA6,
0x5A, 0x1B, 0x1E, 0x4F, 0x4B, 0x0A, 0x4E, 0x5B, 0x0F, 0x5E, 0x5F, 0x4A, 0x1A, 0x1F, 0x0B, 0x0E,
0xF8, 0xB9, 0xBC, 0xED, 0xE9, 0xA8, 0xEC, 0xF9, 0xAD, 0xFC, 0xFD, 0xE8, 0xB8, 0xBD, 0xA9, 0xAC,
0xFA, 0xBB, 0xBE, 0xEF, 0xEB, 0xAA, 0xEE, 0xFB, 0xAF, 0xFE, 0xFF, 0xEA, 0xBA, 0xBF, 0xAB, 0xAE,
0xD0, 0x91, 0x94, 0xC5, 0xC1, 0x80, 0xC4, 0xD1, 0x85, 0xD4, 0xD5, 0xC0, 0x90, 0x95, 0x81, 0x84,
0x70, 0x31, 0x34, 0x65, 0x61, 0x20, 0x64, 0x71, 0x25, 0x74, 0x75, 0x60, 0x30, 0x35, 0x21, 0x24,
0x7A, 0x3B, 0x3E, 0x6F, 0x6B, 0x2A, 0x6E, 0x7B, 0x2F, 0x7E, 0x7F, 0x6A, 0x3A, 0x3F, 0x2B, 0x2E,
0x52, 0x13, 0x16, 0x47, 0x43, 0x02, 0x46, 0x53, 0x07, 0x56, 0x57, 0x42, 0x12, 0x17, 0x03, 0x06,
0x58, 0x19, 0x1C, 0x4D, 0x49, 0x08, 0x4C, 0x59, 0x0D, 0x5C, 0x5D, 0x48, 0x18, 0x1D, 0x09, 0x0C,
};
// 0 1 2 3 4 5 6 7 ---- 1 5 2 6 3 7 0 4
static const uint8_t mix_row_1[256] =
{
0xC3, 0xC6, 0xD2, 0x97, 0x87, 0x82, 0x93, 0xC7, 0x96, 0xD3, 0xD7, 0x83, 0xC2, 0xD6, 0x86, 0x92,
0xC9, 0xCC, 0xD8, 0x9D, 0x8D, 0x88, 0x99, 0xCD, 0x9C, 0xD9, 0xDD, 0x89, 0xC8, 0xDC, 0x8C, 0x98,
0xE1, 0xE4, 0xF0, 0xB5, 0xA5, 0xA0, 0xB1, 0xE5, 0xB4, 0xF1, 0xF5, 0xA1, 0xE0, 0xF4, 0xA4, 0xB0,
0x6B, 0x6E, 0x7A, 0x3F, 0x2F, 0x2A, 0x3B, 0x6F, 0x3E, 0x7B, 0x7F, 0x2B, 0x6A, 0x7E, 0x2E, 0x3A,
0x4B, 0x4E, 0x5A, 0x1F, 0x0F, 0x0A, 0x1B, 0x4F, 0x1E, 0x5B, 0x5F, 0x0B, 0x4A, 0x5E, 0x0E, 0x1A,
0x41, 0x44, 0x50, 0x15, 0x05, 0x00, 0x11, 0x45, 0x14, 0x51, 0x55, 0x01, 0x40, 0x54, 0x04, 0x10,
0x63, 0x66, 0x72, 0x37, 0x27, 0x22, 0x33, 0x67, 0x36, 0x73, 0x77, 0x23, 0x62, 0x76, 0x26, 0x32,
0xCB, 0xCE, 0xDA, 0x9F, 0x8F, 0x8A, 0x9B, 0xCF, 0x9E, 0xDB, 0xDF, 0x8B, 0xCA, 0xDE, 0x8E, 0x9A,
0x69, 0x6C, 0x78, 0x3D, 0x2D, 0x28, 0x39, 0x6D, 0x3C, 0x79, 0x7D, 0x29, 0x68, 0x7C, 0x2C, 0x38,
0xE3, 0xE6, 0xF2, 0xB7, 0xA7, 0xA2, 0xB3, 0xE7, 0xB6, 0xF3, 0xF7, 0xA3, 0xE2, 0xF6, 0xA6, 0xB2,
0xEB, 0xEE, 0xFA, 0xBF, 0xAF, 0xAA, 0xBB, 0xEF, 0xBE, 0xFB, 0xFF, 0xAB, 0xEA, 0xFE, 0xAE, 0xBA,
0x43, 0x46, 0x52, 0x17, 0x07, 0x02, 0x13, 0x47, 0x16, 0x53, 0x57, 0x03, 0x42, 0x56, 0x06, 0x12,
0xC1, 0xC4, 0xD0, 0x95, 0x85, 0x80, 0x91, 0xC5, 0x94, 0xD1, 0xD5, 0x81, 0xC0, 0xD4, 0x84, 0x90,
0xE9, 0xEC, 0xF8, 0xBD, 0xAD, 0xA8, 0xB9, 0xED, 0xBC, 0xF9, 0xFD, 0xA9, 0xE8, 0xFC, 0xAC, 0xB8,
0x49, 0x4C, 0x58, 0x1D, 0x0D, 0x08, 0x19, 0x4D, 0x1C, 0x59, 0x5D, 0x09, 0x48, 0x5C, 0x0C, 0x18,
0x61, 0x64, 0x70, 0x35, 0x25, 0x20, 0x31, 0x65, 0x34, 0x71, 0x75, 0x21, 0x60, 0x74, 0x24, 0x30,
};
// 0 1 2 3 4 5 6 7 ---- 2 6 3 7 0 4 1 5
static const uint8_t mix_row_2[256] =
{
0x0F, 0x1B, 0x4B, 0x5E, 0x1E, 0x0A, 0x4E, 0x1F, 0x5A, 0x4F, 0x5F, 0x0E, 0x0B, 0x5B, 0x1A, 0x4A,
0x27, 0x33, 0x63, 0x76, 0x36, 0x22, 0x66, 0x37, 0x72, 0x67, 0x77, 0x26, 0x23, 0x73, 0x32, 0x62,
0x87, 0x93, 0xC3, 0xD6, 0x96, 0x82, 0xC6, 0x97, 0xD2, 0xC7, 0xD7, 0x86, 0x83, 0xD3, 0x92, 0xC2,
0xAD, 0xB9, 0xE9, 0xFC, 0xBC, 0xA8, 0xEC, 0xBD, 0xF8, 0xED, 0xFD, 0xAC, 0xA9, 0xF9, 0xB8, 0xE8,
0x2D, 0x39, 0x69, 0x7C, 0x3C, 0x28, 0x6C, 0x3D, 0x78, 0x6D, 0x7D, 0x2C, 0x29, 0x79, 0x38, 0x68,
0x05, 0x11, 0x41, 0x54, 0x14, 0x00, 0x44, 0x15, 0x50, 0x45, 0x55, 0x04, 0x01, 0x51, 0x10, 0x40,
0x8D, 0x99, 0xC9, 0xDC, 0x9C, 0x88, 0xCC, 0x9D, 0xD8, 0xCD, 0xDD, 0x8C, 0x89, 0xD9, 0x98, 0xC8,
0x2F, 0x3B, 0x6B, 0x7E, 0x3E, 0x2A, 0x6E, 0x3F, 0x7A, 0x6F, 0x7F, 0x2E, 0x2B, 0x7B, 0x3A, 0x6A,
0xA5, 0xB1, 0xE1, 0xF4, 0xB4, 0xA0, 0xE4, 0xB5, 0xF0, 0xE5, 0xF5, 0xA4, 0xA1, 0xF1, 0xB0, 0xE0,
0x8F, 0x9B, 0xCB, 0xDE, 0x9E, 0x8A, 0xCE, 0x9F, 0xDA, 0xCF, 0xDF, 0x8E, 0x8B, 0xDB, 0x9A, 0xCA,
0xAF, 0xBB, 0xEB, 0xFE, 0xBE, 0xAA, 0xEE, 0xBF, 0xFA, 0xEF, 0xFF, 0xAE, 0xAB, 0xFB, 0xBA, 0xEA,
0x0D, 0x19, 0x49, 0x5C, 0x1C, 0x08, 0x4C, 0x1D, 0x58, 0x4D, 0x5D, 0x0C, 0x09, 0x59, 0x18, 0x48,
0x07, 0x13, 0x43, 0x56, 0x16, 0x02, 0x46, 0x17, 0x52, 0x47, 0x57, 0x06, 0x03, 0x53, 0x12, 0x42,
0xA7, 0xB3, 0xE3, 0xF6, 0xB6, 0xA2, 0xE6, 0xB7, 0xF2, 0xE7, 0xF7, 0xA6, 0xA3, 0xF3, 0xB2, 0xE2,
0x25, 0x31, 0x61, 0x74, 0x34, 0x20, 0x64, 0x35, 0x70, 0x65, 0x75, 0x24, 0x21, 0x71, 0x30, 0x60,
0x85, 0x91, 0xC1, 0xD4, 0x94, 0x80, 0xC4, 0x95, 0xD0, 0xC5, 0xD5, 0x84, 0x81, 0xD1, 0x90, 0xC0,
};
// 0 1 2 3 4 5 6 7 ---- 3 7 0 4 1 5 2 6
static const uint8_t mix_row_3[256] =
{
0x3C, 0x6C, 0x2D, 0x79, 0x78, 0x28, 0x39, 0x7C, 0x69, 0x3D, 0x7D, 0x38, 0x2C, 0x6D, 0x68, 0x29,
0x9C, 0xCC, 0x8D, 0xD9, 0xD8, 0x88, 0x99, 0xDC, 0xC9, 0x9D, 0xDD, 0x98, 0x8C, 0xCD, 0xC8, 0x89,
0x1E, 0x4E, 0x0F, 0x5B, 0x5A, 0x0A, 0x1B, 0x5E, 0x4B, 0x1F, 0x5F, 0x1A, 0x0E, 0x4F, 0x4A, 0x0B,
0xB6, 0xE6, 0xA7, 0xF3, 0xF2, 0xA2, 0xB3, 0xF6, 0xE3, 0xB7, 0xF7, 0xB2, 0xA6, 0xE7, 0xE2, 0xA3,
0xB4, 0xE4, 0xA5, 0xF1, 0xF0, 0xA0, 0xB1, 0xF4, 0xE1, 0xB5, 0xF5, 0xB0, 0xA4, 0xE5, 0xE0, 0xA1,
0x14, 0x44, 0x05, 0x51, 0x50, 0x00, 0x11, 0x54, 0x41, 0x15, 0x55, 0x10, 0x04, 0x45, 0x40, 0x01,
0x36, 0x66, 0x27, 0x73, 0x72, 0x22, 0x33, 0x76, 0x63, 0x37, 0x77, 0x32, 0x26, 0x67, 0x62, 0x23,
0xBC, 0xEC, 0xAD, 0xF9, 0xF8, 0xA8, 0xB9, 0xFC, 0xE9, 0xBD, 0xFD, 0xB8, 0xAC, 0xED, 0xE8, 0xA9,
0x96, 0xC6, 0x87, 0xD3, 0xD2, 0x82, 0x93, 0xD6, 0xC3, 0x97, 0xD7, 0x92, 0x86, 0xC7, 0xC2, 0x83,
0x3E, 0x6E, 0x2F, 0x7B, 0x7A, 0x2A, 0x3B, 0x7E, 0x6B, 0x3F, 0x7F, 0x3A, 0x2E, 0x6F, 0x6A, 0x2B,
0xBE, 0xEE, 0xAF, 0xFB, 0xFA, 0xAA, 0xBB, 0xFE, 0xEB, 0xBF, 0xFF, 0xBA, 0xAE, 0xEF, 0xEA, 0xAB,
0x34, 0x64, 0x25, 0x71, 0x70, 0x20, 0x31, 0x74, 0x61, 0x35, 0x75, 0x30, 0x24, 0x65, 0x60, 0x21,
0x1C, 0x4C, 0x0D, 0x59, 0x58, 0x08, 0x19, 0x5C, 0x49, 0x1D, 0x5D, 0x18, 0x0C, 0x4D, 0x48, 0x09,
0x9E, 0xCE, 0x8F, 0xDB, 0xDA, 0x8A, 0x9B, 0xDE, 0xCB, 0x9F, 0xDF, 0x9A, 0x8E, 0xCF, 0xCA, 0x8B,
0x94, 0xC4, 0x85, 0xD1, 0xD0, 0x80, 0x91, 0xD4, 0xC1, 0x95, 0xD5, 0x90, 0x84, 0xC5, 0xC0, 0x81,
0x16, 0x46, 0x07, 0x53, 0x52, 0x02, 0x13, 0x56, 0x43, 0x17, 0x57, 0x12, 0x06, 0x47, 0x42, 0x03,
};
static const uint8_t inv_sbox[16] =
{
0x5, 0xE, 0xF, 0x8, 0xC, 0x1, 0x2, 0xD, 0xB, 0x4, 0x6, 0x3, 0x0, 0x7, 0x9, 0xA,
};
static const uint8_t inv_sbox_2[256] =
{
0x55, 0x5e, 0x5f, 0x58, 0x5c, 0x51, 0x52, 0x5d, 0x5b, 0x54, 0x56, 0x53, 0x50, 0x57, 0x59, 0x5a,
0xe5, 0xee, 0xef, 0xe8, 0xec, 0xe1, 0xe2, 0xed, 0xeb, 0xe4, 0xe6, 0xe3, 0xe0, 0xe7, 0xe9, 0xea,
0xf5, 0xfe, 0xff, 0xf8, 0xfc, 0xf1, 0xf2, 0xfd, 0xfb, 0xf4, 0xf6, 0xf3, 0xf0, 0xf7, 0xf9, 0xfa,
0x85, 0x8e, 0x8f, 0x88, 0x8c, 0x81, 0x82, 0x8d, 0x8b, 0x84, 0x86, 0x83, 0x80, 0x87, 0x89, 0x8a,
0xc5, 0xce, 0xcf, 0xc8, 0xcc, 0xc1, 0xc2, 0xcd, 0xcb, 0xc4, 0xc6, 0xc3, 0xc0, 0xc7, 0xc9, 0xca,
0x15, 0x1e, 0x1f, 0x18, 0x1c, 0x11, 0x12, 0x1d, 0x1b, 0x14, 0x16, 0x13, 0x10, 0x17, 0x19, 0x1a,
0x25, 0x2e, 0x2f, 0x28, 0x2c, 0x21, 0x22, 0x2d, 0x2b, 0x24, 0x26, 0x23, 0x20, 0x27, 0x29, 0x2a,
0xd5, 0xde, 0xdf, 0xd8, 0xdc, 0xd1, 0xd2, 0xdd, 0xdb, 0xd4, 0xd6, 0xd3, 0xd0, 0xd7, 0xd9, 0xda,
0xb5, 0xbe, 0xbf, 0xb8, 0xbc, 0xb1, 0xb2, 0xbd, 0xbb, 0xb4, 0xb6, 0xb3, 0xb0, 0xb7, 0xb9, 0xba,
0x45, 0x4e, 0x4f, 0x48, 0x4c, 0x41, 0x42, 0x4d, 0x4b, 0x44, 0x46, 0x43, 0x40, 0x47, 0x49, 0x4a,
0x65, 0x6e, 0x6f, 0x68, 0x6c, 0x61, 0x62, 0x6d, 0x6b, 0x64, 0x66, 0x63, 0x60, 0x67, 0x69, 0x6a,
0x35, 0x3e, 0x3f, 0x38, 0x3c, 0x31, 0x32, 0x3d, 0x3b, 0x34, 0x36, 0x33, 0x30, 0x37, 0x39, 0x3a,
0x05, 0x0e, 0x0f, 0x08, 0x0c, 0x01, 0x02, 0x0d, 0x0b, 0x04, 0x06, 0x03, 0x00, 0x07, 0x09, 0x0a,
0x75, 0x7e, 0x7f, 0x78, 0x7c, 0x71, 0x72, 0x7d, 0x7b, 0x74, 0x76, 0x73, 0x70, 0x77, 0x79, 0x7a,
0x95, 0x9e, 0x9f, 0x98, 0x9c, 0x91, 0x92, 0x9d, 0x9b, 0x94, 0x96, 0x93, 0x90, 0x97, 0x99, 0x9a,
0xa5, 0xae, 0xaf, 0xa8, 0xac, 0xa1, 0xa2, 0xad, 0xab, 0xa4, 0xa6, 0xa3, 0xa0, 0xa7, 0xa9, 0xaa,
};
// 0 1 2 3 4 5 6 7 ---- 0 4 1 5 2 6 3 7
// 0 1 2 3 4 5 6 7 ---- 0 2 4 6 1 3 5 7
static const uint8_t inv_mix_row_0[256] =
{
0x00, 0x01, 0x10, 0x11, 0x02, 0x03, 0x12, 0x13, 0x20, 0x21, 0x30, 0x31, 0x22, 0x23, 0x32, 0x33,
0x04, 0x05, 0x14, 0x15, 0x06, 0x07, 0x16, 0x17, 0x24, 0x25, 0x34, 0x35, 0x26, 0x27, 0x36, 0x37,
0x40, 0x41, 0x50, 0x51, 0x42, 0x43, 0x52, 0x53, 0x60, 0x61, 0x70, 0x71, 0x62, 0x63, 0x72, 0x73,
0x44, 0x45, 0x54, 0x55, 0x46, 0x47, 0x56, 0x57, 0x64, 0x65, 0x74, 0x75, 0x66, 0x67, 0x76, 0x77,
0x08, 0x09, 0x18, 0x19, 0x0a, 0x0b, 0x1a, 0x1b, 0x28, 0x29, 0x38, 0x39, 0x2a, 0x2b, 0x3a, 0x3b,
0x0c, 0x0d, 0x1c, 0x1d, 0x0e, 0x0f, 0x1e, 0x1f, 0x2c, 0x2d, 0x3c, 0x3d, 0x2e, 0x2f, 0x3e, 0x3f,
0x48, 0x49, 0x58, 0x59, 0x4a, 0x4b, 0x5a, 0x5b, 0x68, 0x69, 0x78, 0x79, 0x6a, 0x6b, 0x7a, 0x7b,
0x4c, 0x4d, 0x5c, 0x5d, 0x4e, 0x4f, 0x5e, 0x5f, 0x6c, 0x6d, 0x7c, 0x7d, 0x6e, 0x6f, 0x7e, 0x7f,
0x80, 0x81, 0x90, 0x91, 0x82, 0x83, 0x92, 0x93, 0xa0, 0xa1, 0xb0, 0xb1, 0xa2, 0xa3, 0xb2, 0xb3,
0x84, 0x85, 0x94, 0x95, 0x86, 0x87, 0x96, 0x97, 0xa4, 0xa5, 0xb4, 0xb5, 0xa6, 0xa7, 0xb6, 0xb7,
0xc0, 0xc1, 0xd0, 0xd1, 0xc2, 0xc3, 0xd2, 0xd3, 0xe0, 0xe1, 0xf0, 0xf1, 0xe2, 0xe3, 0xf2, 0xf3,
0xc4, 0xc5, 0xd4, 0xd5, 0xc6, 0xc7, 0xd6, 0xd7, 0xe4, 0xe5, 0xf4, 0xf5, 0xe6, 0xe7, 0xf6, 0xf7,
0x88, 0x89, 0x98, 0x99, 0x8a, 0x8b, 0x9a, 0x9b, 0xa8, 0xa9, 0xb8, 0xb9, 0xaa, 0xab, 0xba, 0xbb,
0x8c, 0x8d, 0x9c, 0x9d, 0x8e, 0x8f, 0x9e, 0x9f, 0xac, 0xad, 0xbc, 0xbd, 0xae, 0xaf, 0xbe, 0xbf,
0xc8, 0xc9, 0xd8, 0xd9, 0xca, 0xcb, 0xda, 0xdb, 0xe8, 0xe9, 0xf8, 0xf9, 0xea, 0xeb, 0xfa, 0xfb,
0xcc, 0xcd, 0xdc, 0xdd, 0xce, 0xcf, 0xde, 0xdf, 0xec, 0xed, 0xfc, 0xfd, 0xee, 0xef, 0xfe, 0xff,
};
// 0 1 2 3 4 5 6 7 ---- 1 5 2 6 3 7 0 4
// 0 1 2 3 4 5 6 7 ---- 6 0 2 4 7 1 3 5
static const uint8_t inv_mix_row_1[256] =
{
0x00, 0x08, 0x80, 0x88, 0x01, 0x09, 0x81, 0x89, 0x10, 0x18, 0x90, 0x98, 0x11, 0x19, 0x91, 0x99,
0x02, 0x0a, 0x82, 0x8a, 0x03, 0x0b, 0x83, 0x8b, 0x12, 0x1a, 0x92, 0x9a, 0x13, 0x1b, 0x93, 0x9b,
0x20, 0x28, 0xa0, 0xa8, 0x21, 0x29, 0xa1, 0xa9, 0x30, 0x38, 0xb0, 0xb8, 0x31, 0x39, 0xb1, 0xb9,
0x22, 0x2a, 0xa2, 0xaa, 0x23, 0x2b, 0xa3, 0xab, 0x32, 0x3a, 0xb2, 0xba, 0x33, 0x3b, 0xb3, 0xbb,
0x04, 0x0c, 0x84, 0x8c, 0x05, 0x0d, 0x85, 0x8d, 0x14, 0x1c, 0x94, 0x9c, 0x15, 0x1d, 0x95, 0x9d,
0x06, 0x0e, 0x86, 0x8e, 0x07, 0x0f, 0x87, 0x8f, 0x16, 0x1e, 0x96, 0x9e, 0x17, 0x1f, 0x97, 0x9f,
0x24, 0x2c, 0xa4, 0xac, 0x25, 0x2d, 0xa5, 0xad, 0x34, 0x3c, 0xb4, 0xbc, 0x35, 0x3d, 0xb5, 0xbd,
0x26, 0x2e, 0xa6, 0xae, 0x27, 0x2f, 0xa7, 0xaf, 0x36, 0x3e, 0xb6, 0xbe, 0x37, 0x3f, 0xb7, 0xbf,
0x40, 0x48, 0xc0, 0xc8, 0x41, 0x49, 0xc1, 0xc9, 0x50, 0x58, 0xd0, 0xd8, 0x51, 0x59, 0xd1, 0xd9,
0x42, 0x4a, 0xc2, 0xca, 0x43, 0x4b, 0xc3, 0xcb, 0x52, 0x5a, 0xd2, 0xda, 0x53, 0x5b, 0xd3, 0xdb,
0x60, 0x68, 0xe0, 0xe8, 0x61, 0x69, 0xe1, 0xe9, 0x70, 0x78, 0xf0, 0xf8, 0x71, 0x79, 0xf1, 0xf9,
0x62, 0x6a, 0xe2, 0xea, 0x63, 0x6b, 0xe3, 0xeb, 0x72, 0x7a, 0xf2, 0xfa, 0x73, 0x7b, 0xf3, 0xfb,
0x44, 0x4c, 0xc4, 0xcc, 0x45, 0x4d, 0xc5, 0xcd, 0x54, 0x5c, 0xd4, 0xdc, 0x55, 0x5d, 0xd5, 0xdd,
0x46, 0x4e, 0xc6, 0xce, 0x47, 0x4f, 0xc7, 0xcf, 0x56, 0x5e, 0xd6, 0xde, 0x57, 0x5f, 0xd7, 0xdf,
0x64, 0x6c, 0xe4, 0xec, 0x65, 0x6d, 0xe5, 0xed, 0x74, 0x7c, 0xf4, 0xfc, 0x75, 0x7d, 0xf5, 0xfd,
0x66, 0x6e, 0xe6, 0xee, 0x67, 0x6f, 0xe7, 0xef, 0x76, 0x7e, 0xf6, 0xfe, 0x77, 0x7f, 0xf7, 0xff,
};
// 0 1 2 3 4 5 6 7 ---- 2 6 3 7 0 4 1 5
// 0 1 2 3 4 5 6 7 ---- 4 6 0 2 5 7 1 3
static const uint8_t inv_mix_row_2[256] =
{
0x00, 0x04, 0x40, 0x44, 0x08, 0x0c, 0x48, 0x4c, 0x80, 0x84, 0xc0, 0xc4, 0x88, 0x8c, 0xc8, 0xcc,
0x01, 0x05, 0x41, 0x45, 0x09, 0x0d, 0x49, 0x4d, 0x81, 0x85, 0xc1, 0xc5, 0x89, 0x8d, 0xc9, 0xcd,
0x10, 0x14, 0x50, 0x54, 0x18, 0x1c, 0x58, 0x5c, 0x90, 0x94, 0xd0, 0xd4, 0x98, 0x9c, 0xd8, 0xdc,
0x11, 0x15, 0x51, 0x55, 0x19, 0x1d, 0x59, 0x5d, 0x91, 0x95, 0xd1, 0xd5, 0x99, 0x9d, 0xd9, 0xdd,
0x02, 0x06, 0x42, 0x46, 0x0a, 0x0e, 0x4a, 0x4e, 0x82, 0x86, 0xc2, 0xc6, 0x8a, 0x8e, 0xca, 0xce,
0x03, 0x07, 0x43, 0x47, 0x0b, 0x0f, 0x4b, 0x4f, 0x83, 0x87, 0xc3, 0xc7, 0x8b, 0x8f, 0xcb, 0xcf,
0x12, 0x16, 0x52, 0x56, 0x1a, 0x1e, 0x5a, 0x5e, 0x92, 0x96, 0xd2, 0xd6, 0x9a, 0x9e, 0xda, 0xde,
0x13, 0x17, 0x53, 0x57, 0x1b, 0x1f, 0x5b, 0x5f, 0x93, 0x97, 0xd3, 0xd7, 0x9b, 0x9f, 0xdb, 0xdf,
0x20, 0x24, 0x60, 0x64, 0x28, 0x2c, 0x68, 0x6c, 0xa0, 0xa4, 0xe0, 0xe4, 0xa8, 0xac, 0xe8, 0xec,
0x21, 0x25, 0x61, 0x65, 0x29, 0x2d, 0x69, 0x6d, 0xa1, 0xa5, 0xe1, 0xe5, 0xa9, 0xad, 0xe9, 0xed,
0x30, 0x34, 0x70, 0x74, 0x38, 0x3c, 0x78, 0x7c, 0xb0, 0xb4, 0xf0, 0xf4, 0xb8, 0xbc, 0xf8, 0xfc,
0x31, 0x35, 0x71, 0x75, 0x39, 0x3d, 0x79, 0x7d, 0xb1, 0xb5, 0xf1, 0xf5, 0xb9, 0xbd, 0xf9, 0xfd,
0x22, 0x26, 0x62, 0x66, 0x2a, 0x2e, 0x6a, 0x6e, 0xa2, 0xa6, 0xe2, 0xe6, 0xaa, 0xae, 0xea, 0xee,
0x23, 0x27, 0x63, 0x67, 0x2b, 0x2f, 0x6b, 0x6f, 0xa3, 0xa7, 0xe3, 0xe7, 0xab, 0xaf, 0xeb, 0xef,
0x32, 0x36, 0x72, 0x76, 0x3a, 0x3e, 0x7a, 0x7e, 0xb2, 0xb6, 0xf2, 0xf6, 0xba, 0xbe, 0xfa, 0xfe,
0x33, 0x37, 0x73, 0x77, 0x3b, 0x3f, 0x7b, 0x7f, 0xb3, 0xb7, 0xf3, 0xf7, 0xbb, 0xbf, 0xfb, 0xff,
};
// 0 1 2 3 4 5 6 7 ---- 3 7 0 4 1 5 2 6
// 0 1 2 3 4 5 6 7 ---- 2 4 6 0 3 5 7 1
static const uint8_t inv_mix_row_3[256] =
{
0x00, 0x02, 0x20, 0x22, 0x04, 0x06, 0x24, 0x26, 0x40, 0x42, 0x60, 0x62, 0x44, 0x46, 0x64, 0x66,
0x08, 0x0a, 0x28, 0x2a, 0x0c, 0x0e, 0x2c, 0x2e, 0x48, 0x4a, 0x68, 0x6a, 0x4c, 0x4e, 0x6c, 0x6e,
0x80, 0x82, 0xa0, 0xa2, 0x84, 0x86, 0xa4, 0xa6, 0xc0, 0xc2, 0xe0, 0xe2, 0xc4, 0xc6, 0xe4, 0xe6,
0x88, 0x8a, 0xa8, 0xaa, 0x8c, 0x8e, 0xac, 0xae, 0xc8, 0xca, 0xe8, 0xea, 0xcc, 0xce, 0xec, 0xee,
0x01, 0x03, 0x21, 0x23, 0x05, 0x07, 0x25, 0x27, 0x41, 0x43, 0x61, 0x63, 0x45, 0x47, 0x65, 0x67,
0x09, 0x0b, 0x29, 0x2b, 0x0d, 0x0f, 0x2d, 0x2f, 0x49, 0x4b, 0x69, 0x6b, 0x4d, 0x4f, 0x6d, 0x6f,
0x81, 0x83, 0xa1, 0xa3, 0x85, 0x87, 0xa5, 0xa7, 0xc1, 0xc3, 0xe1, 0xe3, 0xc5, 0xc7, 0xe5, 0xe7,
0x89, 0x8b, 0xa9, 0xab, 0x8d, 0x8f, 0xad, 0xaf, 0xc9, 0xcb, 0xe9, 0xeb, 0xcd, 0xcf, 0xed, 0xef,
0x10, 0x12, 0x30, 0x32, 0x14, 0x16, 0x34, 0x36, 0x50, 0x52, 0x70, 0x72, 0x54, 0x56, 0x74, 0x76,
0x18, 0x1a, 0x38, 0x3a, 0x1c, 0x1e, 0x3c, 0x3e, 0x58, 0x5a, 0x78, 0x7a, 0x5c, 0x5e, 0x7c, 0x7e,
0x90, 0x92, 0xb0, 0xb2, 0x94, 0x96, 0xb4, 0xb6, 0xd0, 0xd2, 0xf0, 0xf2, 0xd4, 0xd6, 0xf4, 0xf6,
0x98, 0x9a, 0xb8, 0xba, 0x9c, 0x9e, 0xbc, 0xbe, 0xd8, 0xda, 0xf8, 0xfa, 0xdc, 0xde, 0xfc, 0xfe,
0x11, 0x13, 0x31, 0x33, 0x15, 0x17, 0x35, 0x37, 0x51, 0x53, 0x71, 0x73, 0x55, 0x57, 0x75, 0x77,
0x19, 0x1b, 0x39, 0x3b, 0x1d, 0x1f, 0x3d, 0x3f, 0x59, 0x5b, 0x79, 0x7b, 0x5d, 0x5f, 0x7d, 0x7f,
0x91, 0x93, 0xb1, 0xb3, 0x95, 0x97, 0xb5, 0xb7, 0xd1, 0xd3, 0xf1, 0xf3, 0xd5, 0xd7, 0xf5, 0xf7,
0x99, 0x9b, 0xb9, 0xbb, 0x9d, 0x9f, 0xbd, 0xbf, 0xd9, 0xdb, 0xf9, 0xfb, 0xdd, 0xdf, 0xfd, 0xff,
};
static inline void Sbox_P_Layer(uint8_t *cipher, const uint8_t* state)
{
// Resort state by pLayer
// Group 4
cipher[0] =
(mix_row_0[state[0]] & 0xC0) |
(mix_row_3[state[1]] & 0x30) |
(mix_row_2[state[2]] & 0x0C) |
(mix_row_1[state[3]] & 0x03);
cipher[1] =
(mix_row_0[state[4]] & 0xC0) |
(mix_row_3[state[5]] & 0x30) |
(mix_row_2[state[6]] & 0x0C) |
(mix_row_1[state[7]] & 0x03);
// Group 3
cipher[2] =
(mix_row_1[state[0]] & 0xC0) |
(mix_row_0[state[1]] & 0x30) |
(mix_row_3[state[2]] & 0x0C) |
(mix_row_2[state[3]] & 0x03);
cipher[3] =
(mix_row_1[state[4]] & 0xC0) |
(mix_row_0[state[5]] & 0x30) |
(mix_row_3[state[6]] & 0x0C) |
(mix_row_2[state[7]] & 0x03);
// Group 2
cipher[4] =
(mix_row_2[state[0]] & 0xC0) |
(mix_row_1[state[1]] & 0x30) |
(mix_row_0[state[2]] & 0x0C) |
(mix_row_3[state[3]] & 0x03);
cipher[5] =
(mix_row_2[state[4]] & 0xC0) |
(mix_row_1[state[5]] & 0x30) |
(mix_row_0[state[6]] & 0x0C) |
(mix_row_3[state[7]] & 0x03);
// Group 1
cipher[6] =
(mix_row_3[state[0]] & 0xC0) |
(mix_row_2[state[1]] & 0x30) |
(mix_row_1[state[2]] & 0x0C) |
(mix_row_0[state[3]] & 0x03);
cipher[7] =
(mix_row_3[state[4]] & 0xC0) |
(mix_row_2[state[5]] & 0x30) |
(mix_row_1[state[6]] & 0x0C) |
(mix_row_0[state[7]] & 0x03);
}
// Find state by text XOR key
static inline void Inv_AddRoundKey(uint8_t *plain, const uint8_t *text, uint8_t key[][20], uint8_t rounds)
{
plain[0] = text[0] ^ key[rounds][0];
plain[1] = text[1] ^ key[rounds][1];
plain[2] = text[2] ^ key[rounds][2];
plain[3] = text[3] ^ key[rounds][3];
plain[4] = text[4] ^ key[rounds][4];
plain[5] = text[5] ^ key[rounds][5];
plain[6] = text[6] ^ key[rounds][6];
plain[7] = text[7] ^ key[rounds][7];
}
// Find next round_key by key
static inline void Key_Initial(uint8_t round_key[][20], const uint8_t *key, uint8_t rounds)
{
round_key[0][0] = key[0];
round_key[0][1] = key[1];
round_key[0][2] = key[2];
round_key[0][3] = key[3];
round_key[0][4] = key[4];
round_key[0][5] = key[5];
round_key[0][6] = key[6];
round_key[0][7] = key[7];
round_key[0][8] = key[8];
round_key[0][9] = key[9];
uint8_t round_counter;
uint8_t prev_round;
for (round_counter = 1; round_counter <= rounds; round_counter++)
{
prev_round = round_counter - 1;
//find round_key
round_key[round_counter][9] = round_key[prev_round][6] << 5 | round_key[prev_round][7] >> 3;
round_key[round_counter][8] = round_key[prev_round][5] << 5 | round_key[prev_round][6] >> 3;
round_key[round_counter][7] = round_key[prev_round][4] << 5 | round_key[prev_round][5] >> 3;
round_key[round_counter][6] = round_key[prev_round][3] << 5 | round_key[prev_round][4] >> 3;
round_key[round_counter][5] = round_key[prev_round][2] << 5 | round_key[prev_round][3] >> 3;
round_key[round_counter][4] = round_key[prev_round][1] << 5 | round_key[prev_round][2] >> 3;
round_key[round_counter][3] = round_key[prev_round][0] << 5 | round_key[prev_round][1] >> 3;
round_key[round_counter][2] = round_key[prev_round][9] << 5 | round_key[prev_round][0] >> 3;
round_key[round_counter][1] = round_key[prev_round][8] << 5 | round_key[prev_round][9] >> 3;
round_key[round_counter][0] = round_key[prev_round][7] << 5 | round_key[prev_round][8] >> 3;
round_key[round_counter][0] = (round_key[round_counter][0] & 0x0F) | sbox[round_key[round_counter][0] >> 4];
round_key[round_counter][7] ^= round_counter >> 1;
round_key[round_counter][8] ^= round_counter << 7;
}
}
// Find state by text
static inline void Inv_Sbox_P_Layer(uint8_t *state, const uint8_t* text)
{
// Resort state by pLayer
// Group 4
state[0] = inv_sbox_2[
(inv_mix_row_0[text[0]] & 0x88) |
(inv_mix_row_1[text[2]] & 0x44) |
(inv_mix_row_2[text[4]] & 0x22) |
(inv_mix_row_3[text[6]] & 0x11)
];
state[1] = inv_sbox_2[
(inv_mix_row_3[text[0]] & 0x88) |
(inv_mix_row_0[text[2]] & 0x44) |
(inv_mix_row_1[text[4]] & 0x22) |
(inv_mix_row_2[text[6]] & 0x11)
];
// Group 3
state[2] = inv_sbox_2[
(inv_mix_row_2[text[0]] & 0x88) |
(inv_mix_row_3[text[2]] & 0x44) |
(inv_mix_row_0[text[4]] & 0x22) |
(inv_mix_row_1[text[6]] & 0x11)
];
state[3] = inv_sbox_2[
(inv_mix_row_1[text[0]] & 0x88) |
(inv_mix_row_2[text[2]] & 0x44) |
(inv_mix_row_3[text[4]] & 0x22) |
(inv_mix_row_0[text[6]] & 0x11)
];
// Group 2
state[4] = inv_sbox_2[
(inv_mix_row_0[text[1]] & 0x88) |
(inv_mix_row_1[text[3]] & 0x44) |
(inv_mix_row_2[text[5]] & 0x22) |
(inv_mix_row_3[text[7]] & 0x11)
];
state[5] = inv_sbox_2[
(inv_mix_row_3[text[1]] & 0x88) |
(inv_mix_row_0[text[3]] & 0x44) |
(inv_mix_row_1[text[5]] & 0x22) |
(inv_mix_row_2[text[7]] & 0x11)
];
// Group 1
state[6] = inv_sbox_2[
(inv_mix_row_2[text[1]] & 0x88) |
(inv_mix_row_3[text[3]] & 0x44) |
(inv_mix_row_0[text[5]] & 0x22) |
(inv_mix_row_1[text[7]] & 0x11)
];
state[7] = inv_sbox_2[
(inv_mix_row_1[text[1]] & 0x88) |
(inv_mix_row_2[text[3]] & 0x44) |
(inv_mix_row_3[text[5]] & 0x22) |
(inv_mix_row_0[text[7]] & 0x11)
];
}
// Find state by text XOR key
static inline void AddRoundKey(uint8_t *state, const uint8_t *text, const uint8_t *key)
{
state[0] = text[0] ^ key[0];
state[1] = text[1] ^ key[1];
state[2] = text[2] ^ key[2];
state[3] = text[3] ^ key[3];
state[4] = text[4] ^ key[4];
state[5] = text[5] ^ key[5];
state[6] = text[6] ^ key[6];
state[7] = text[7] ^ key[7];
}
// Find next round_key by key
static inline void KeyUpdateFull(uint8_t *round_key, const uint8_t *key, const uint8_t round_counter)
{
//save key 7-9, for round_key may equal to key
uint8_t temp_0 = key[7];
uint8_t temp_1 = key[8];
uint8_t temp_2 = key[9];
//find round_key
round_key[9] = key[6] << 5 | key[7] >> 3;
round_key[8] = key[5] << 5 | key[6] >> 3;
round_key[7] = key[4] << 5 | key[5] >> 3;
round_key[6] = key[3] << 5 | key[4] >> 3;
round_key[5] = key[2] << 5 | key[3] >> 3;
round_key[4] = key[1] << 5 | key[2] >> 3;
round_key[3] = key[0] << 5 | key[1] >> 3;
round_key[2] = temp_2 << 5 | key[0] >> 3;
round_key[1] = temp_1 << 5 | temp_2 >> 3;
round_key[0] = temp_0 << 5 | temp_1 >> 3;
round_key[0] = (round_key[0] & 0x0F) | (sbox[round_key[0] >> 4]);
round_key[7] ^= round_counter >> 1;
round_key[8] ^= round_counter << 7;
}
// Full-round should be 31, i.e. rounds = 31
// Plain and cipher can overlap, so do key and cipher
void present_rounds(const uint8_t *plain, const uint8_t *key, const uint8_t rounds, uint8_t *cipher)
{
uint8_t round_counter = 1;
uint8_t state[8];
uint8_t round_key[10];
// Inital key
GenerateRoundKeys(round_key, key, round_counter);
// Add key
AddRoundKey(state, plain, key);
// Substitution and permutation
Sbox_P_Layer(cipher, state);
for (round_counter = 2; round_counter <= rounds; round_counter++)
{
// Add key
AddRoundKey(state, cipher, round_key);
// Substitution and permutation
Sbox_P_Layer(cipher, state);
// Find next round_key
KeyUpdate(round_key, round_counter);
}
// if round is not equal to 31, then do not perform the last adding key operation
// this can be used in constructing PRESENT based algorithm, such as MAC
if (31 == rounds)
{
AddRoundKey(cipher, cipher, round_key);
}
}
// full-round should be 31, i.e. rounds = 31
// plain and cipher can overlap, so do key and cipher
void present_decrypt_rounds(const uint8_t *cipher, const uint8_t *key, const uint8_t rounds, uint8_t *plain)
{
uint8_t round_counter = 1;
uint8_t state[16];
// Contains all round keys in this variable, round_key[0][] is key.
// Inital the key
uint8_t round_key[32][20];
Key_Initial(round_key, key, rounds);
// If round not equal to 31, then do not perform the last decoding key operation
if (31 == rounds)
{
Inv_AddRoundKey(plain, cipher, round_key, 31);
}
// If round equal to 31, we use plain to find state
// If round not equal to 31, we use cipher to find state
if (31 == rounds)
{
Inv_Sbox_P_Layer(state, plain);
}
else
{
Inv_Sbox_P_Layer(state, cipher);
}
// The end of round rounds, find plain for round rounds
Inv_AddRoundKey(plain, state, round_key, rounds - 1);
// Back find plaintext. Begin from rounds - 1 and end at 1
for (round_counter = (rounds - 1); round_counter >= 1; round_counter--)
{
// Substitution and permutation
Inv_Sbox_P_Layer(state, plain);
// The end of round round_counter, find plain for round round_counter
Inv_AddRoundKey(plain, state, round_key, round_counter - 1);
}
}