Line | Count | Source (jump to first uncovered line) |
1 | | // seed.cpp - originally written and placed in the public domain by Wei Dai |
2 | | |
3 | | #include "pch.h" |
4 | | #include "seed.h" |
5 | | #include "misc.h" |
6 | | #include "stdcpp.h" |
7 | | |
8 | | ANONYMOUS_NAMESPACE_BEGIN |
9 | | |
10 | | using CryptoPP::byte; |
11 | | using CryptoPP::word32; |
12 | | |
13 | | const word32 s_kc[16] = { |
14 | | 0x9e3779b9, 0x3c6ef373, 0x78dde6e6, 0xf1bbcdcc, 0xe3779b99, 0xc6ef3733, 0x8dde6e67, 0x1bbcdccf, |
15 | | 0x3779b99e, 0x6ef3733c, 0xdde6e678, 0xbbcdccf1, 0x779b99e3, 0xef3733c6, 0xde6e678d, 0xbcdccf1b}; |
16 | | |
17 | | const byte s_s0[256] = { |
18 | | 0xA9, 0x85, 0xD6, 0xD3, 0x54, 0x1D, 0xAC, 0x25, 0x5D, 0x43, 0x18, 0x1E, 0x51, 0xFC, 0xCA, 0x63, 0x28, |
19 | | 0x44, 0x20, 0x9D, 0xE0, 0xE2, 0xC8, 0x17, 0xA5, 0x8F, 0x03, 0x7B, 0xBB, 0x13, 0xD2, 0xEE, 0x70, 0x8C, |
20 | | 0x3F, 0xA8, 0x32, 0xDD, 0xF6, 0x74, 0xEC, 0x95, 0x0B, 0x57, 0x5C, 0x5B, 0xBD, 0x01, 0x24, 0x1C, 0x73, |
21 | | 0x98, 0x10, 0xCC, 0xF2, 0xD9, 0x2C, 0xE7, 0x72, 0x83, 0x9B, 0xD1, 0x86, 0xC9, 0x60, 0x50, 0xA3, 0xEB, |
22 | | 0x0D, 0xB6, 0x9E, 0x4F, 0xB7, 0x5A, 0xC6, 0x78, 0xA6, 0x12, 0xAF, 0xD5, 0x61, 0xC3, 0xB4, 0x41, 0x52, |
23 | | 0x7D, 0x8D, 0x08, 0x1F, 0x99, 0x00, 0x19, 0x04, 0x53, 0xF7, 0xE1, 0xFD, 0x76, 0x2F, 0x27, 0xB0, 0x8B, |
24 | | 0x0E, 0xAB, 0xA2, 0x6E, 0x93, 0x4D, 0x69, 0x7C, 0x09, 0x0A, 0xBF, 0xEF, 0xF3, 0xC5, 0x87, 0x14, 0xFE, |
25 | | 0x64, 0xDE, 0x2E, 0x4B, 0x1A, 0x06, 0x21, 0x6B, 0x66, 0x02, 0xF5, 0x92, 0x8A, 0x0C, 0xB3, 0x7E, 0xD0, |
26 | | 0x7A, 0x47, 0x96, 0xE5, 0x26, 0x80, 0xAD, 0xDF, 0xA1, 0x30, 0x37, 0xAE, 0x36, 0x15, 0x22, 0x38, 0xF4, |
27 | | 0xA7, 0x45, 0x4C, 0x81, 0xE9, 0x84, 0x97, 0x35, 0xCB, 0xCE, 0x3C, 0x71, 0x11, 0xC7, 0x89, 0x75, 0xFB, |
28 | | 0xDA, 0xF8, 0x94, 0x59, 0x82, 0xC4, 0xFF, 0x49, 0x39, 0x67, 0xC0, 0xCF, 0xD7, 0xB8, 0x0F, 0x8E, 0x42, |
29 | | 0x23, 0x91, 0x6C, 0xDB, 0xA4, 0x34, 0xF1, 0x48, 0xC2, 0x6F, 0x3D, 0x2D, 0x40, 0xBE, 0x3E, 0xBC, 0xC1, |
30 | | 0xAA, 0xBA, 0x4E, 0x55, 0x3B, 0xDC, 0x68, 0x7F, 0x9C, 0xD8, 0x4A, 0x56, 0x77, 0xA0, 0xED, 0x46, 0xB5, |
31 | | 0x2B, 0x65, 0xFA, 0xE3, 0xB9, 0xB1, 0x9F, 0x5E, 0xF9, 0xE6, 0xB2, 0x31, 0xEA, 0x6D, 0x5F, 0xE4, 0xF0, |
32 | | 0xCD, 0x88, 0x16, 0x3A, 0x58, 0xD4, 0x62, 0x29, 0x07, 0x33, 0xE8, 0x1B, 0x05, 0x79, 0x90, 0x6A, 0x2A, |
33 | | 0x9A}; |
34 | | |
35 | | static const byte s_s1[256] = { |
36 | | 0x38, 0xE8, 0x2D, 0xA6, 0xCF, 0xDE, 0xB3, 0xB8, 0xAF, 0x60, 0x55, 0xC7, 0x44, 0x6F, 0x6B, 0x5B, 0xC3, |
37 | | 0x62, 0x33, 0xB5, 0x29, 0xA0, 0xE2, 0xA7, 0xD3, 0x91, 0x11, 0x06, 0x1C, 0xBC, 0x36, 0x4B, 0xEF, 0x88, |
38 | | 0x6C, 0xA8, 0x17, 0xC4, 0x16, 0xF4, 0xC2, 0x45, 0xE1, 0xD6, 0x3F, 0x3D, 0x8E, 0x98, 0x28, 0x4E, 0xF6, |
39 | | 0x3E, 0xA5, 0xF9, 0x0D, 0xDF, 0xD8, 0x2B, 0x66, 0x7A, 0x27, 0x2F, 0xF1, 0x72, 0x42, 0xD4, 0x41, 0xC0, |
40 | | 0x73, 0x67, 0xAC, 0x8B, 0xF7, 0xAD, 0x80, 0x1F, 0xCA, 0x2C, 0xAA, 0x34, 0xD2, 0x0B, 0xEE, 0xE9, 0x5D, |
41 | | 0x94, 0x18, 0xF8, 0x57, 0xAE, 0x08, 0xC5, 0x13, 0xCD, 0x86, 0xB9, 0xFF, 0x7D, 0xC1, 0x31, 0xF5, 0x8A, |
42 | | 0x6A, 0xB1, 0xD1, 0x20, 0xD7, 0x02, 0x22, 0x04, 0x68, 0x71, 0x07, 0xDB, 0x9D, 0x99, 0x61, 0xBE, 0xE6, |
43 | | 0x59, 0xDD, 0x51, 0x90, 0xDC, 0x9A, 0xA3, 0xAB, 0xD0, 0x81, 0x0F, 0x47, 0x1A, 0xE3, 0xEC, 0x8D, 0xBF, |
44 | | 0x96, 0x7B, 0x5C, 0xA2, 0xA1, 0x63, 0x23, 0x4D, 0xC8, 0x9E, 0x9C, 0x3A, 0x0C, 0x2E, 0xBA, 0x6E, 0x9F, |
45 | | 0x5A, 0xF2, 0x92, 0xF3, 0x49, 0x78, 0xCC, 0x15, 0xFB, 0x70, 0x75, 0x7F, 0x35, 0x10, 0x03, 0x64, 0x6D, |
46 | | 0xC6, 0x74, 0xD5, 0xB4, 0xEA, 0x09, 0x76, 0x19, 0xFE, 0x40, 0x12, 0xE0, 0xBD, 0x05, 0xFA, 0x01, 0xF0, |
47 | | 0x2A, 0x5E, 0xA9, 0x56, 0x43, 0x85, 0x14, 0x89, 0x9B, 0xB0, 0xE5, 0x48, 0x79, 0x97, 0xFC, 0x1E, 0x82, |
48 | | 0x21, 0x8C, 0x1B, 0x5F, 0x77, 0x54, 0xB2, 0x1D, 0x25, 0x4F, 0x00, 0x46, 0xED, 0x58, 0x52, 0xEB, 0x7E, |
49 | | 0xDA, 0xC9, 0xFD, 0x30, 0x95, 0x65, 0x3C, 0xB6, 0xE4, 0xBB, 0x7C, 0x0E, 0x50, 0x39, 0x26, 0x32, 0x84, |
50 | | 0x69, 0x93, 0x37, 0xE7, 0x24, 0xA4, 0xCB, 0x53, 0x0A, 0x87, 0xD9, 0x4C, 0x83, 0x8F, 0xCE, 0x3B, 0x4A, |
51 | | 0xB7}; |
52 | | |
53 | 2.14k | #define SS0(x) ((s_s0[x]*0x01010101UL) & 0x3FCFF3FC) |
54 | 2.14k | #define SS1(x) ((s_s1[x]*0x01010101UL) & 0xFC3FCFF3) |
55 | 2.14k | #define SS2(x) ((s_s0[x]*0x01010101UL) & 0xF3FC3FCF) |
56 | 2.14k | #define SS3(x) ((s_s1[x]*0x01010101UL) & 0xCFF3FC3F) |
57 | 2.14k | #define G(x) (SS0(GETBYTE(x, 0)) ^ SS1(GETBYTE(x, 1)) ^ SS2(GETBYTE(x, 2)) ^ SS3(GETBYTE(x, 3))) |
58 | | |
59 | | ANONYMOUS_NAMESPACE_END |
60 | | |
61 | | NAMESPACE_BEGIN(CryptoPP) |
62 | | |
63 | | void SEED::Base::UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs& /*params*/) |
64 | 1 | { |
65 | 1 | AssertValidKeyLength(length); |
66 | | |
67 | 1 | word64 key01, key23; |
68 | 1 | GetBlock<word64, BigEndian> get(userKey); |
69 | 1 | get(key01)(key23); |
70 | 1 | word32 *k = m_k; |
71 | 1 | ptrdiff_t kInc = 2; |
72 | | |
73 | 1 | if (!IsForwardTransformation()) |
74 | 0 | { |
75 | 0 | k = k+30; |
76 | 0 | kInc = 0-kInc; |
77 | 0 | } |
78 | | |
79 | 17 | for (unsigned int i=0; i<ROUNDS; i++) |
80 | 16 | { |
81 | 16 | word32 t0 = word32(key01>>32) + word32(key23>>32) - s_kc[i]; |
82 | 16 | word32 t1 = word32(key01) - word32(key23) + s_kc[i]; |
83 | 16 | k[0] = G(t0); |
84 | 16 | k[1] = G(t1); |
85 | 16 | k+=kInc; |
86 | 16 | if (i&1) |
87 | 8 | key23 = rotlConstant<8,word64>(key23); |
88 | 8 | else |
89 | 8 | key01 = rotrConstant<8,word64>(key01); |
90 | 16 | } |
91 | 1 | } |
92 | | |
93 | | void SEED::Base::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const |
94 | 44 | { |
95 | 44 | typedef BlockGetAndPut<word32, BigEndian> Block; |
96 | 44 | word32 a0, a1, b0, b1, t0, t1; |
97 | 44 | Block::Get(inBlock)(a0)(a1)(b0)(b1); |
98 | | |
99 | 396 | for (int i=0; i<ROUNDS; i+=2) |
100 | 352 | { |
101 | 352 | t0 = b0 ^ m_k[2*i+0]; t1 = b1 ^ m_k[2*i+1] ^ t0; |
102 | 352 | t1 = G(t1); t0 += t1; t0 = G(t0); t1 += t0; t1 = G(t1); |
103 | 352 | a0 ^= t0 + t1; a1 ^= t1; |
104 | | |
105 | 352 | t0 = a0 ^ m_k[2*i+2]; t1 = a1 ^ m_k[2*i+3] ^ t0; |
106 | 352 | t1 = G(t1); t0 += t1; t0 = G(t0); t1 += t0; t1 = G(t1); |
107 | 352 | b0 ^= t0 + t1; b1 ^= t1; |
108 | 352 | } |
109 | | |
110 | 44 | Block::Put(xorBlock, outBlock)(b0)(b1)(a0)(a1); |
111 | 44 | } |
112 | | |
113 | | NAMESPACE_END |