Botan  2.19.1
Crypto and TLS for C++11
md4.cpp
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1 /*
2 * MD4
3 * (C) 1999-2007 Jack Lloyd
4 *
5 * Botan is released under the Simplified BSD License (see license.txt)
6 */
7 
8 #include <botan/md4.h>
9 #include <botan/loadstor.h>
10 #include <botan/rotate.h>
11 
12 namespace Botan {
13 
14 std::unique_ptr<HashFunction> MD4::copy_state() const
15  {
16  return std::unique_ptr<HashFunction>(new MD4(*this));
17  }
18 
19 namespace {
20 
21 inline void FF4(uint32_t& A, uint32_t& B, uint32_t& C, uint32_t& D,
22  uint32_t M0, uint32_t M1, uint32_t M2, uint32_t M3)
23 
24  {
25  A += (D ^ (B & (C ^ D))) + M0;
26  A = rotl<3>(A);
27 
28  D += (C ^ (A & (B ^ C))) + M1;
29  D = rotl<7>(D);
30 
31  C += (B ^ (D & (A ^ B))) + M2;
32  C = rotl<11>(C);
33 
34  B += (A ^ (C & (D ^ A))) + M3;
35  B = rotl<19>(B);
36  }
37 
38 inline void GG4(uint32_t& A, uint32_t& B, uint32_t& C, uint32_t& D,
39  uint32_t M0, uint32_t M1, uint32_t M2, uint32_t M3)
40 
41  {
42  A += ((B & C) | (D & (B | C))) + M0 + 0x5A827999;
43  A = rotl<3>(A);
44 
45  D += ((A & B) | (C & (A | B))) + M1 + 0x5A827999;
46  D = rotl<5>(D);
47 
48  C += ((D & A) | (B & (D | A))) + M2 + 0x5A827999;
49  C = rotl<9>(C);
50 
51  B += ((C & D) | (A & (C | D))) + M3 + 0x5A827999;
52  B = rotl<13>(B);
53  }
54 
55 inline void HH4(uint32_t& A, uint32_t& B, uint32_t& C, uint32_t& D,
56  uint32_t M0, uint32_t M1, uint32_t M2, uint32_t M3)
57 
58  {
59  A += (B ^ C ^ D) + M0 + 0x6ED9EBA1;
60  A = rotl<3>(A);
61 
62  D += (A ^ B ^ C) + M1 + 0x6ED9EBA1;
63  D = rotl<9>(D);
64 
65  C += (A ^ B ^ D) + M2 + 0x6ED9EBA1;
66  C = rotl<11>(C);
67 
68  B += (A ^ C ^ D) + M3 + 0x6ED9EBA1;
69  B = rotl<15>(B);
70  }
71 
72 }
73 
74 /*
75 * MD4 Compression Function
76 */
77 void MD4::compress_n(const uint8_t input[], size_t blocks)
78  {
79  uint32_t A = m_digest[0], B = m_digest[1], C = m_digest[2], D = m_digest[3];
80 
81  for(size_t i = 0; i != blocks; ++i)
82  {
83  uint32_t M00 = load_le<uint32_t>(input, 0);
84  uint32_t M01 = load_le<uint32_t>(input, 1);
85  uint32_t M02 = load_le<uint32_t>(input, 2);
86  uint32_t M03 = load_le<uint32_t>(input, 3);
87  uint32_t M04 = load_le<uint32_t>(input, 4);
88  uint32_t M05 = load_le<uint32_t>(input, 5);
89  uint32_t M06 = load_le<uint32_t>(input, 6);
90  uint32_t M07 = load_le<uint32_t>(input, 7);
91  uint32_t M08 = load_le<uint32_t>(input, 8);
92  uint32_t M09 = load_le<uint32_t>(input, 9);
93  uint32_t M10 = load_le<uint32_t>(input, 10);
94  uint32_t M11 = load_le<uint32_t>(input, 11);
95  uint32_t M12 = load_le<uint32_t>(input, 12);
96  uint32_t M13 = load_le<uint32_t>(input, 13);
97  uint32_t M14 = load_le<uint32_t>(input, 14);
98  uint32_t M15 = load_le<uint32_t>(input, 15);
99 
100  FF4(A, B, C, D, M00, M01, M02, M03);
101  FF4(A, B, C, D, M04, M05, M06, M07);
102  FF4(A, B, C, D, M08, M09, M10, M11);
103  FF4(A, B, C, D, M12, M13, M14, M15);
104 
105  GG4(A, B, C, D, M00, M04, M08, M12);
106  GG4(A, B, C, D, M01, M05, M09, M13);
107  GG4(A, B, C, D, M02, M06, M10, M14);
108  GG4(A, B, C, D, M03, M07, M11, M15);
109 
110  HH4(A, B, C, D, M00, M08, M04, M12);
111  HH4(A, B, C, D, M02, M10, M06, M14);
112  HH4(A, B, C, D, M01, M09, M05, M13);
113  HH4(A, B, C, D, M03, M11, M07, M15);
114 
115  A = (m_digest[0] += A);
116  B = (m_digest[1] += B);
117  C = (m_digest[2] += C);
118  D = (m_digest[3] += D);
119 
120  input += hash_block_size();
121  }
122  }
123 
124 /*
125 * Copy out the digest
126 */
127 void MD4::copy_out(uint8_t output[])
128  {
129  copy_out_vec_le(output, output_length(), m_digest);
130  }
131 
132 /*
133 * Clear memory of sensitive data
134 */
136  {
138  m_digest[0] = 0x67452301;
139  m_digest[1] = 0xEFCDAB89;
140  m_digest[2] = 0x98BADCFE;
141  m_digest[3] = 0x10325476;
142  }
143 
144 }
void clear() override
Definition: mdx_hash.cpp:41
MD4()
Definition: md4.h:30
void BOTAN_FUNC_ISA("avx2") SHACAL2 SIMD_8x32 A
uint32_t load_le< uint32_t >(const uint8_t in[], size_t off)
Definition: loadstor.h:198
SIMD_8x32 D
size_t hash_block_size() const overridefinal
Definition: mdx_hash.h:35
size_t output_length() const override
Definition: md4.h:24
void clear() override
Definition: md4.cpp:135
SIMD_8x32 B
Definition: alg_id.cpp:13
SIMD_8x32 C
std::unique_ptr< HashFunction > copy_state() const override
Definition: md4.cpp:14
void copy_out_vec_le(uint8_t out[], size_t out_bytes, const std::vector< T, Alloc > &in)
Definition: loadstor.h:694