Line data Source code
1 : // Copyright (c) 2014-2022 The Bitcoin Core developers
2 : // Distributed under the MIT software license, see the accompanying
3 : // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 :
5 : #include <crypto/sha512.h>
6 :
7 : #include <crypto/common.h>
8 :
9 : #include <string.h>
10 :
11 : // Internal implementation code.
12 : namespace
13 : {
14 : /// Internal SHA-512 implementation.
15 : namespace sha512
16 : {
17 19552624 : uint64_t inline Ch(uint64_t x, uint64_t y, uint64_t z) { return z ^ (x & (y ^ z)); }
18 19375520 : uint64_t inline Maj(uint64_t x, uint64_t y, uint64_t z) { return (x & y) | (z & (x | y)); }
19 19375520 : uint64_t inline Sigma0(uint64_t x) { return (x >> 28 | x << 36) ^ (x >> 34 | x << 30) ^ (x >> 39 | x << 25); }
20 19375520 : uint64_t inline Sigma1(uint64_t x) { return (x >> 14 | x << 50) ^ (x >> 18 | x << 46) ^ (x >> 41 | x << 23); }
21 15500416 : uint64_t inline sigma0(uint64_t x) { return (x >> 1 | x << 63) ^ (x >> 8 | x << 56) ^ (x >> 7); }
22 15500416 : uint64_t inline sigma1(uint64_t x) { return (x >> 19 | x << 45) ^ (x >> 61 | x << 3) ^ (x >> 6); }
23 :
24 : /** One round of SHA-512. */
25 19375520 : void inline Round(uint64_t a, uint64_t b, uint64_t c, uint64_t& d, uint64_t e, uint64_t f, uint64_t g, uint64_t& h, uint64_t k, uint64_t w)
26 : {
27 19375520 : uint64_t t1 = h + Sigma1(e) + Ch(e, f, g) + k + w;
28 19375520 : uint64_t t2 = Sigma0(a) + Maj(a, b, c);
29 19375520 : d += t1;
30 19375520 : h = t1 + t2;
31 19375520 : }
32 :
33 : /** Initialize SHA-512 state. */
34 418210 : void inline Initialize(uint64_t* s)
35 : {
36 418210 : s[0] = 0x6a09e667f3bcc908ull;
37 418210 : s[1] = 0xbb67ae8584caa73bull;
38 418210 : s[2] = 0x3c6ef372fe94f82bull;
39 418210 : s[3] = 0xa54ff53a5f1d36f1ull;
40 418210 : s[4] = 0x510e527fade682d1ull;
41 418210 : s[5] = 0x9b05688c2b3e6c1full;
42 418210 : s[6] = 0x1f83d9abfb41bd6bull;
43 418210 : s[7] = 0x5be0cd19137e2179ull;
44 418210 : }
45 :
46 : /** Perform one SHA-512 transformation, processing a 128-byte chunk. */
47 242194 : void Transform(uint64_t* s, const unsigned char* chunk)
48 : {
49 242194 : uint64_t a = s[0], b = s[1], c = s[2], d = s[3], e = s[4], f = s[5], g = s[6], h = s[7];
50 : uint64_t w0, w1, w2, w3, w4, w5, w6, w7, w8, w9, w10, w11, w12, w13, w14, w15;
51 :
52 242194 : Round(a, b, c, d, e, f, g, h, 0x428a2f98d728ae22ull, w0 = ReadBE64(chunk + 0));
53 242194 : Round(h, a, b, c, d, e, f, g, 0x7137449123ef65cdull, w1 = ReadBE64(chunk + 8));
54 242194 : Round(g, h, a, b, c, d, e, f, 0xb5c0fbcfec4d3b2full, w2 = ReadBE64(chunk + 16));
55 242194 : Round(f, g, h, a, b, c, d, e, 0xe9b5dba58189dbbcull, w3 = ReadBE64(chunk + 24));
56 242194 : Round(e, f, g, h, a, b, c, d, 0x3956c25bf348b538ull, w4 = ReadBE64(chunk + 32));
57 242194 : Round(d, e, f, g, h, a, b, c, 0x59f111f1b605d019ull, w5 = ReadBE64(chunk + 40));
58 242194 : Round(c, d, e, f, g, h, a, b, 0x923f82a4af194f9bull, w6 = ReadBE64(chunk + 48));
59 242194 : Round(b, c, d, e, f, g, h, a, 0xab1c5ed5da6d8118ull, w7 = ReadBE64(chunk + 56));
60 242194 : Round(a, b, c, d, e, f, g, h, 0xd807aa98a3030242ull, w8 = ReadBE64(chunk + 64));
61 242194 : Round(h, a, b, c, d, e, f, g, 0x12835b0145706fbeull, w9 = ReadBE64(chunk + 72));
62 242194 : Round(g, h, a, b, c, d, e, f, 0x243185be4ee4b28cull, w10 = ReadBE64(chunk + 80));
63 242194 : Round(f, g, h, a, b, c, d, e, 0x550c7dc3d5ffb4e2ull, w11 = ReadBE64(chunk + 88));
64 242194 : Round(e, f, g, h, a, b, c, d, 0x72be5d74f27b896full, w12 = ReadBE64(chunk + 96));
65 242194 : Round(d, e, f, g, h, a, b, c, 0x80deb1fe3b1696b1ull, w13 = ReadBE64(chunk + 104));
66 242194 : Round(c, d, e, f, g, h, a, b, 0x9bdc06a725c71235ull, w14 = ReadBE64(chunk + 112));
67 242194 : Round(b, c, d, e, f, g, h, a, 0xc19bf174cf692694ull, w15 = ReadBE64(chunk + 120));
68 :
69 242194 : Round(a, b, c, d, e, f, g, h, 0xe49b69c19ef14ad2ull, w0 += sigma1(w14) + w9 + sigma0(w1));
70 242194 : Round(h, a, b, c, d, e, f, g, 0xefbe4786384f25e3ull, w1 += sigma1(w15) + w10 + sigma0(w2));
71 242194 : Round(g, h, a, b, c, d, e, f, 0x0fc19dc68b8cd5b5ull, w2 += sigma1(w0) + w11 + sigma0(w3));
72 242194 : Round(f, g, h, a, b, c, d, e, 0x240ca1cc77ac9c65ull, w3 += sigma1(w1) + w12 + sigma0(w4));
73 242194 : Round(e, f, g, h, a, b, c, d, 0x2de92c6f592b0275ull, w4 += sigma1(w2) + w13 + sigma0(w5));
74 242194 : Round(d, e, f, g, h, a, b, c, 0x4a7484aa6ea6e483ull, w5 += sigma1(w3) + w14 + sigma0(w6));
75 242194 : Round(c, d, e, f, g, h, a, b, 0x5cb0a9dcbd41fbd4ull, w6 += sigma1(w4) + w15 + sigma0(w7));
76 242194 : Round(b, c, d, e, f, g, h, a, 0x76f988da831153b5ull, w7 += sigma1(w5) + w0 + sigma0(w8));
77 242194 : Round(a, b, c, d, e, f, g, h, 0x983e5152ee66dfabull, w8 += sigma1(w6) + w1 + sigma0(w9));
78 242194 : Round(h, a, b, c, d, e, f, g, 0xa831c66d2db43210ull, w9 += sigma1(w7) + w2 + sigma0(w10));
79 242194 : Round(g, h, a, b, c, d, e, f, 0xb00327c898fb213full, w10 += sigma1(w8) + w3 + sigma0(w11));
80 242194 : Round(f, g, h, a, b, c, d, e, 0xbf597fc7beef0ee4ull, w11 += sigma1(w9) + w4 + sigma0(w12));
81 242194 : Round(e, f, g, h, a, b, c, d, 0xc6e00bf33da88fc2ull, w12 += sigma1(w10) + w5 + sigma0(w13));
82 242194 : Round(d, e, f, g, h, a, b, c, 0xd5a79147930aa725ull, w13 += sigma1(w11) + w6 + sigma0(w14));
83 242194 : Round(c, d, e, f, g, h, a, b, 0x06ca6351e003826full, w14 += sigma1(w12) + w7 + sigma0(w15));
84 242194 : Round(b, c, d, e, f, g, h, a, 0x142929670a0e6e70ull, w15 += sigma1(w13) + w8 + sigma0(w0));
85 :
86 242194 : Round(a, b, c, d, e, f, g, h, 0x27b70a8546d22ffcull, w0 += sigma1(w14) + w9 + sigma0(w1));
87 242194 : Round(h, a, b, c, d, e, f, g, 0x2e1b21385c26c926ull, w1 += sigma1(w15) + w10 + sigma0(w2));
88 242194 : Round(g, h, a, b, c, d, e, f, 0x4d2c6dfc5ac42aedull, w2 += sigma1(w0) + w11 + sigma0(w3));
89 242194 : Round(f, g, h, a, b, c, d, e, 0x53380d139d95b3dfull, w3 += sigma1(w1) + w12 + sigma0(w4));
90 242194 : Round(e, f, g, h, a, b, c, d, 0x650a73548baf63deull, w4 += sigma1(w2) + w13 + sigma0(w5));
91 242194 : Round(d, e, f, g, h, a, b, c, 0x766a0abb3c77b2a8ull, w5 += sigma1(w3) + w14 + sigma0(w6));
92 242194 : Round(c, d, e, f, g, h, a, b, 0x81c2c92e47edaee6ull, w6 += sigma1(w4) + w15 + sigma0(w7));
93 242194 : Round(b, c, d, e, f, g, h, a, 0x92722c851482353bull, w7 += sigma1(w5) + w0 + sigma0(w8));
94 242194 : Round(a, b, c, d, e, f, g, h, 0xa2bfe8a14cf10364ull, w8 += sigma1(w6) + w1 + sigma0(w9));
95 242194 : Round(h, a, b, c, d, e, f, g, 0xa81a664bbc423001ull, w9 += sigma1(w7) + w2 + sigma0(w10));
96 242194 : Round(g, h, a, b, c, d, e, f, 0xc24b8b70d0f89791ull, w10 += sigma1(w8) + w3 + sigma0(w11));
97 242194 : Round(f, g, h, a, b, c, d, e, 0xc76c51a30654be30ull, w11 += sigma1(w9) + w4 + sigma0(w12));
98 242194 : Round(e, f, g, h, a, b, c, d, 0xd192e819d6ef5218ull, w12 += sigma1(w10) + w5 + sigma0(w13));
99 242194 : Round(d, e, f, g, h, a, b, c, 0xd69906245565a910ull, w13 += sigma1(w11) + w6 + sigma0(w14));
100 242194 : Round(c, d, e, f, g, h, a, b, 0xf40e35855771202aull, w14 += sigma1(w12) + w7 + sigma0(w15));
101 242194 : Round(b, c, d, e, f, g, h, a, 0x106aa07032bbd1b8ull, w15 += sigma1(w13) + w8 + sigma0(w0));
102 :
103 242194 : Round(a, b, c, d, e, f, g, h, 0x19a4c116b8d2d0c8ull, w0 += sigma1(w14) + w9 + sigma0(w1));
104 242194 : Round(h, a, b, c, d, e, f, g, 0x1e376c085141ab53ull, w1 += sigma1(w15) + w10 + sigma0(w2));
105 242194 : Round(g, h, a, b, c, d, e, f, 0x2748774cdf8eeb99ull, w2 += sigma1(w0) + w11 + sigma0(w3));
106 242194 : Round(f, g, h, a, b, c, d, e, 0x34b0bcb5e19b48a8ull, w3 += sigma1(w1) + w12 + sigma0(w4));
107 242194 : Round(e, f, g, h, a, b, c, d, 0x391c0cb3c5c95a63ull, w4 += sigma1(w2) + w13 + sigma0(w5));
108 242194 : Round(d, e, f, g, h, a, b, c, 0x4ed8aa4ae3418acbull, w5 += sigma1(w3) + w14 + sigma0(w6));
109 242194 : Round(c, d, e, f, g, h, a, b, 0x5b9cca4f7763e373ull, w6 += sigma1(w4) + w15 + sigma0(w7));
110 242194 : Round(b, c, d, e, f, g, h, a, 0x682e6ff3d6b2b8a3ull, w7 += sigma1(w5) + w0 + sigma0(w8));
111 242194 : Round(a, b, c, d, e, f, g, h, 0x748f82ee5defb2fcull, w8 += sigma1(w6) + w1 + sigma0(w9));
112 242194 : Round(h, a, b, c, d, e, f, g, 0x78a5636f43172f60ull, w9 += sigma1(w7) + w2 + sigma0(w10));
113 242194 : Round(g, h, a, b, c, d, e, f, 0x84c87814a1f0ab72ull, w10 += sigma1(w8) + w3 + sigma0(w11));
114 242194 : Round(f, g, h, a, b, c, d, e, 0x8cc702081a6439ecull, w11 += sigma1(w9) + w4 + sigma0(w12));
115 242194 : Round(e, f, g, h, a, b, c, d, 0x90befffa23631e28ull, w12 += sigma1(w10) + w5 + sigma0(w13));
116 242194 : Round(d, e, f, g, h, a, b, c, 0xa4506cebde82bde9ull, w13 += sigma1(w11) + w6 + sigma0(w14));
117 242194 : Round(c, d, e, f, g, h, a, b, 0xbef9a3f7b2c67915ull, w14 += sigma1(w12) + w7 + sigma0(w15));
118 242194 : Round(b, c, d, e, f, g, h, a, 0xc67178f2e372532bull, w15 += sigma1(w13) + w8 + sigma0(w0));
119 :
120 242194 : Round(a, b, c, d, e, f, g, h, 0xca273eceea26619cull, w0 += sigma1(w14) + w9 + sigma0(w1));
121 242194 : Round(h, a, b, c, d, e, f, g, 0xd186b8c721c0c207ull, w1 += sigma1(w15) + w10 + sigma0(w2));
122 242194 : Round(g, h, a, b, c, d, e, f, 0xeada7dd6cde0eb1eull, w2 += sigma1(w0) + w11 + sigma0(w3));
123 242194 : Round(f, g, h, a, b, c, d, e, 0xf57d4f7fee6ed178ull, w3 += sigma1(w1) + w12 + sigma0(w4));
124 242194 : Round(e, f, g, h, a, b, c, d, 0x06f067aa72176fbaull, w4 += sigma1(w2) + w13 + sigma0(w5));
125 242194 : Round(d, e, f, g, h, a, b, c, 0x0a637dc5a2c898a6ull, w5 += sigma1(w3) + w14 + sigma0(w6));
126 242194 : Round(c, d, e, f, g, h, a, b, 0x113f9804bef90daeull, w6 += sigma1(w4) + w15 + sigma0(w7));
127 242194 : Round(b, c, d, e, f, g, h, a, 0x1b710b35131c471bull, w7 += sigma1(w5) + w0 + sigma0(w8));
128 242194 : Round(a, b, c, d, e, f, g, h, 0x28db77f523047d84ull, w8 += sigma1(w6) + w1 + sigma0(w9));
129 242194 : Round(h, a, b, c, d, e, f, g, 0x32caab7b40c72493ull, w9 += sigma1(w7) + w2 + sigma0(w10));
130 242194 : Round(g, h, a, b, c, d, e, f, 0x3c9ebe0a15c9bebcull, w10 += sigma1(w8) + w3 + sigma0(w11));
131 242194 : Round(f, g, h, a, b, c, d, e, 0x431d67c49c100d4cull, w11 += sigma1(w9) + w4 + sigma0(w12));
132 242194 : Round(e, f, g, h, a, b, c, d, 0x4cc5d4becb3e42b6ull, w12 += sigma1(w10) + w5 + sigma0(w13));
133 242194 : Round(d, e, f, g, h, a, b, c, 0x597f299cfc657e2aull, w13 += sigma1(w11) + w6 + sigma0(w14));
134 242194 : Round(c, d, e, f, g, h, a, b, 0x5fcb6fab3ad6faecull, w14 + sigma1(w12) + w7 + sigma0(w15));
135 242194 : Round(b, c, d, e, f, g, h, a, 0x6c44198c4a475817ull, w15 + sigma1(w13) + w8 + sigma0(w0));
136 :
137 242194 : s[0] += a;
138 242194 : s[1] += b;
139 242194 : s[2] += c;
140 242194 : s[3] += d;
141 242194 : s[4] += e;
142 242194 : s[5] += f;
143 242194 : s[6] += g;
144 242194 : s[7] += h;
145 242194 : }
146 :
147 : } // namespace sha512
148 :
149 : } // namespace
150 :
151 :
152 : ////// SHA-512
153 :
154 177104 : CSHA512::CSHA512()
155 : {
156 177104 : sha512::Initialize(s);
157 177104 : }
158 :
159 1432846 : CSHA512& CSHA512::Write(const unsigned char* data, size_t len)
160 : {
161 1432846 : const unsigned char* end = data + len;
162 1432846 : size_t bufsize = bytes % 128;
163 1432846 : if (bufsize && bufsize + len >= 128) {
164 : // Fill the buffer, and process it.
165 241255 : memcpy(buf + bufsize, data, 128 - bufsize);
166 241255 : bytes += 128 - bufsize;
167 241255 : data += 128 - bufsize;
168 241255 : sha512::Transform(s, buf);
169 241255 : bufsize = 0;
170 241255 : }
171 1433785 : while (end - data >= 128) {
172 : // Process full chunks directly from the source.
173 939 : sha512::Transform(s, data);
174 939 : data += 128;
175 939 : bytes += 128;
176 : }
177 1432846 : if (end > data) {
178 : // Fill the buffer with what remains.
179 1191724 : memcpy(buf + bufsize, data, end - data);
180 1191724 : bytes += end - data;
181 1191724 : }
182 1432846 : return *this;
183 : }
184 :
185 241106 : void CSHA512::Finalize(unsigned char hash[OUTPUT_SIZE])
186 : {
187 : static const unsigned char pad[128] = {0x80};
188 241106 : unsigned char sizedesc[16] = {0x00};
189 241106 : WriteBE64(sizedesc + 8, bytes << 3);
190 241106 : Write(pad, 1 + ((239 - (bytes % 128)) % 128));
191 241106 : Write(sizedesc, 16);
192 241106 : WriteBE64(hash, s[0]);
193 241106 : WriteBE64(hash + 8, s[1]);
194 241106 : WriteBE64(hash + 16, s[2]);
195 241106 : WriteBE64(hash + 24, s[3]);
196 241106 : WriteBE64(hash + 32, s[4]);
197 241106 : WriteBE64(hash + 40, s[5]);
198 241106 : WriteBE64(hash + 48, s[6]);
199 241106 : WriteBE64(hash + 56, s[7]);
200 241106 : }
201 :
202 241106 : CSHA512& CSHA512::Reset()
203 : {
204 241106 : bytes = 0;
205 241106 : sha512::Initialize(s);
206 241106 : return *this;
207 : }
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