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-rw-r--r--src/crypto/sha1.cpp192
1 files changed, 192 insertions, 0 deletions
diff --git a/src/crypto/sha1.cpp b/src/crypto/sha1.cpp
new file mode 100644
index 0000000000..304401a50f
--- /dev/null
+++ b/src/crypto/sha1.cpp
@@ -0,0 +1,192 @@
+// Copyright (c) 2014 The Bitcoin developers
+// Distributed under the MIT/X11 software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include "crypto/sha1.h"
+
+#include "crypto/common.h"
+#include <string.h>
+
+// Internal implementation code.
+namespace {
+
+/// Internal SHA-1 implementation.
+namespace sha1 {
+
+/** One round of SHA-1. */
+void inline Round(uint32_t a, uint32_t &b, uint32_t c, uint32_t d, uint32_t &e,
+ uint32_t f, uint32_t k, uint32_t w) {
+ e += ((a << 5) | (a >> 27)) + f + k + w;
+ b = (b << 30) | (b >> 2);
+}
+
+uint32_t inline f1(uint32_t b, uint32_t c, uint32_t d) { return d ^ (b & (c ^ d)); }
+uint32_t inline f2(uint32_t b, uint32_t c, uint32_t d) { return b ^ c ^ d; }
+uint32_t inline f3(uint32_t b, uint32_t c, uint32_t d) { return (b & c) | (d & (b | c)); }
+
+uint32_t inline left(uint32_t x) { return (x << 1) | (x >> 31); }
+
+/** Initialize SHA-1 state. */
+void inline Initialize(uint32_t *s) {
+ s[0] = 0x67452301ul;
+ s[1] = 0xEFCDAB89ul;
+ s[2] = 0x98BADCFEul;
+ s[3] = 0x10325476ul;
+ s[4] = 0xC3D2E1F0ul;
+}
+
+const uint32_t k1 = 0x5A827999ul;
+const uint32_t k2 = 0x6ED9EBA1ul;
+const uint32_t k3 = 0x8F1BBCDCul;
+const uint32_t k4 = 0xCA62C1D6ul;
+
+/** Perform a SHA-1 transformation, processing a 64-byte chunk. */
+void Transform(uint32_t *s, const unsigned char *chunk) {
+ uint32_t a = s[0], b = s[1], c = s[2], d = s[3], e = s[4];
+ uint32_t w0, w1, w2, w3, w4, w5, w6, w7, w8, w9, w10, w11, w12, w13, w14, w15;
+
+ Round(a, b, c, d, e, f1(b, c, d), k1, w0 = ReadBE32(chunk + 0));
+ Round(e, a, b, c, d, f1(a, b, c), k1, w1 = ReadBE32(chunk + 4));
+ Round(d, e, a, b, c, f1(e, a, b), k1, w2 = ReadBE32(chunk + 8));
+ Round(c, d, e, a, b, f1(d, e, a), k1, w3 = ReadBE32(chunk + 12));
+ Round(b, c, d, e, a, f1(c, d, e), k1, w4 = ReadBE32(chunk + 16));
+ Round(a, b, c, d, e, f1(b, c, d), k1, w5 = ReadBE32(chunk + 20));
+ Round(e, a, b, c, d, f1(a, b, c), k1, w6 = ReadBE32(chunk + 24));
+ Round(d, e, a, b, c, f1(e, a, b), k1, w7 = ReadBE32(chunk + 28));
+ Round(c, d, e, a, b, f1(d, e, a), k1, w8 = ReadBE32(chunk + 32));
+ Round(b, c, d, e, a, f1(c, d, e), k1, w9 = ReadBE32(chunk + 36));
+ Round(a, b, c, d, e, f1(b, c, d), k1, w10 = ReadBE32(chunk + 40));
+ Round(e, a, b, c, d, f1(a, b, c), k1, w11 = ReadBE32(chunk + 44));
+ Round(d, e, a, b, c, f1(e, a, b), k1, w12 = ReadBE32(chunk + 48));
+ Round(c, d, e, a, b, f1(d, e, a), k1, w13 = ReadBE32(chunk + 52));
+ Round(b, c, d, e, a, f1(c, d, e), k1, w14 = ReadBE32(chunk + 56));
+ Round(a, b, c, d, e, f1(b, c, d), k1, w15 = ReadBE32(chunk + 60));
+
+ Round(e, a, b, c, d, f1(a, b, c), k1, w0 = left(w0 ^ w13 ^ w8 ^ w2 ));
+ Round(d, e, a, b, c, f1(e, a, b), k1, w1 = left(w1 ^ w14 ^ w9 ^ w3 ));
+ Round(c, d, e, a, b, f1(d, e, a), k1, w2 = left(w2 ^ w15 ^ w10 ^ w4 ));
+ Round(b, c, d, e, a, f1(c, d, e), k1, w3 = left(w3 ^ w0 ^ w11 ^ w5 ));
+ Round(a, b, c, d, e, f2(b, c, d), k2, w4 = left(w4 ^ w1 ^ w12 ^ w6 ));
+ Round(e, a, b, c, d, f2(a, b, c), k2, w5 = left(w5 ^ w2 ^ w13 ^ w7 ));
+ Round(d, e, a, b, c, f2(e, a, b), k2, w6 = left(w6 ^ w3 ^ w14 ^ w8 ));
+ Round(c, d, e, a, b, f2(d, e, a), k2, w7 = left(w7 ^ w4 ^ w15 ^ w9 ));
+ Round(b, c, d, e, a, f2(c, d, e), k2, w8 = left(w8 ^ w5 ^ w0 ^ w10));
+ Round(a, b, c, d, e, f2(b, c, d), k2, w9 = left(w9 ^ w6 ^ w1 ^ w11));
+ Round(e, a, b, c, d, f2(a, b, c), k2, w10 = left(w10 ^ w7 ^ w2 ^ w12));
+ Round(d, e, a, b, c, f2(e, a, b), k2, w11 = left(w11 ^ w8 ^ w3 ^ w13));
+ Round(c, d, e, a, b, f2(d, e, a), k2, w12 = left(w12 ^ w9 ^ w4 ^ w14));
+ Round(b, c, d, e, a, f2(c, d, e), k2, w13 = left(w13 ^ w10 ^ w5 ^ w15));
+ Round(a, b, c, d, e, f2(b, c, d), k2, w14 = left(w14 ^ w11 ^ w6 ^ w0 ));
+ Round(e, a, b, c, d, f2(a, b, c), k2, w15 = left(w15 ^ w12 ^ w7 ^ w1 ));
+
+ Round(d, e, a, b, c, f2(e, a, b), k2, w0 = left(w0 ^ w13 ^ w8 ^ w2 ));
+ Round(c, d, e, a, b, f2(d, e, a), k2, w1 = left(w1 ^ w14 ^ w9 ^ w3 ));
+ Round(b, c, d, e, a, f2(c, d, e), k2, w2 = left(w2 ^ w15 ^ w10 ^ w4 ));
+ Round(a, b, c, d, e, f2(b, c, d), k2, w3 = left(w3 ^ w0 ^ w11 ^ w5 ));
+ Round(e, a, b, c, d, f2(a, b, c), k2, w4 = left(w4 ^ w1 ^ w12 ^ w6 ));
+ Round(d, e, a, b, c, f2(e, a, b), k2, w5 = left(w5 ^ w2 ^ w13 ^ w7 ));
+ Round(c, d, e, a, b, f2(d, e, a), k2, w6 = left(w6 ^ w3 ^ w14 ^ w8 ));
+ Round(b, c, d, e, a, f2(c, d, e), k2, w7 = left(w7 ^ w4 ^ w15 ^ w9 ));
+ Round(a, b, c, d, e, f3(b, c, d), k3, w8 = left(w8 ^ w5 ^ w0 ^ w10));
+ Round(e, a, b, c, d, f3(a, b, c), k3, w9 = left(w9 ^ w6 ^ w1 ^ w11));
+ Round(d, e, a, b, c, f3(e, a, b), k3, w10 = left(w10 ^ w7 ^ w2 ^ w12));
+ Round(c, d, e, a, b, f3(d, e, a), k3, w11 = left(w11 ^ w8 ^ w3 ^ w13));
+ Round(b, c, d, e, a, f3(c, d, e), k3, w12 = left(w12 ^ w9 ^ w4 ^ w14));
+ Round(a, b, c, d, e, f3(b, c, d), k3, w13 = left(w13 ^ w10 ^ w5 ^ w15));
+ Round(e, a, b, c, d, f3(a, b, c), k3, w14 = left(w14 ^ w11 ^ w6 ^ w0 ));
+ Round(d, e, a, b, c, f3(e, a, b), k3, w15 = left(w15 ^ w12 ^ w7 ^ w1 ));
+
+ Round(c, d, e, a, b, f3(d, e, a), k3, w0 = left(w0 ^ w13 ^ w8 ^ w2 ));
+ Round(b, c, d, e, a, f3(c, d, e), k3, w1 = left(w1 ^ w14 ^ w9 ^ w3 ));
+ Round(a, b, c, d, e, f3(b, c, d), k3, w2 = left(w2 ^ w15 ^ w10 ^ w4 ));
+ Round(e, a, b, c, d, f3(a, b, c), k3, w3 = left(w3 ^ w0 ^ w11 ^ w5 ));
+ Round(d, e, a, b, c, f3(e, a, b), k3, w4 = left(w4 ^ w1 ^ w12 ^ w6 ));
+ Round(c, d, e, a, b, f3(d, e, a), k3, w5 = left(w5 ^ w2 ^ w13 ^ w7 ));
+ Round(b, c, d, e, a, f3(c, d, e), k3, w6 = left(w6 ^ w3 ^ w14 ^ w8 ));
+ Round(a, b, c, d, e, f3(b, c, d), k3, w7 = left(w7 ^ w4 ^ w15 ^ w9 ));
+ Round(e, a, b, c, d, f3(a, b, c), k3, w8 = left(w8 ^ w5 ^ w0 ^ w10));
+ Round(d, e, a, b, c, f3(e, a, b), k3, w9 = left(w9 ^ w6 ^ w1 ^ w11));
+ Round(c, d, e, a, b, f3(d, e, a), k3, w10 = left(w10 ^ w7 ^ w2 ^ w12));
+ Round(b, c, d, e, a, f3(c, d, e), k3, w11 = left(w11 ^ w8 ^ w3 ^ w13));
+ Round(a, b, c, d, e, f2(b, c, d), k4, w12 = left(w12 ^ w9 ^ w4 ^ w14));
+ Round(e, a, b, c, d, f2(a, b, c), k4, w13 = left(w13 ^ w10 ^ w5 ^ w15));
+ Round(d, e, a, b, c, f2(e, a, b), k4, w14 = left(w14 ^ w11 ^ w6 ^ w0 ));
+ Round(c, d, e, a, b, f2(d, e, a), k4, w15 = left(w15 ^ w12 ^ w7 ^ w1 ));
+
+ Round(b, c, d, e, a, f2(c, d, e), k4, w0 = left(w0 ^ w13 ^ w8 ^ w2 ));
+ Round(a, b, c, d, e, f2(b, c, d), k4, w1 = left(w1 ^ w14 ^ w9 ^ w3 ));
+ Round(e, a, b, c, d, f2(a, b, c), k4, w2 = left(w2 ^ w15 ^ w10 ^ w4 ));
+ Round(d, e, a, b, c, f2(e, a, b), k4, w3 = left(w3 ^ w0 ^ w11 ^ w5 ));
+ Round(c, d, e, a, b, f2(d, e, a), k4, w4 = left(w4 ^ w1 ^ w12 ^ w6 ));
+ Round(b, c, d, e, a, f2(c, d, e), k4, w5 = left(w5 ^ w2 ^ w13 ^ w7 ));
+ Round(a, b, c, d, e, f2(b, c, d), k4, w6 = left(w6 ^ w3 ^ w14 ^ w8 ));
+ Round(e, a, b, c, d, f2(a, b, c), k4, w7 = left(w7 ^ w4 ^ w15 ^ w9 ));
+ Round(d, e, a, b, c, f2(e, a, b), k4, w8 = left(w8 ^ w5 ^ w0 ^ w10));
+ Round(c, d, e, a, b, f2(d, e, a), k4, w9 = left(w9 ^ w6 ^ w1 ^ w11));
+ Round(b, c, d, e, a, f2(c, d, e), k4, w10 = left(w10 ^ w7 ^ w2 ^ w12));
+ Round(a, b, c, d, e, f2(b, c, d), k4, w11 = left(w11 ^ w8 ^ w3 ^ w13));
+ Round(e, a, b, c, d, f2(a, b, c), k4, w12 = left(w12 ^ w9 ^ w4 ^ w14));
+ Round(d, e, a, b, c, f2(e, a, b), k4, left(w13 ^ w10 ^ w5 ^ w15));
+ Round(c, d, e, a, b, f2(d, e, a), k4, left(w14 ^ w11 ^ w6 ^ w0 ));
+ Round(b, c, d, e, a, f2(c, d, e), k4, left(w15 ^ w12 ^ w7 ^ w1 ));
+
+ s[0] += a;
+ s[1] += b;
+ s[2] += c;
+ s[3] += d;
+ s[4] += e;
+}
+
+} // namespace sha1
+
+} // namespace
+
+////// SHA1
+
+CSHA1::CSHA1() : bytes(0) {
+ sha1::Initialize(s);
+}
+
+CSHA1& CSHA1::Write(const unsigned char *data, size_t len) {
+ const unsigned char *end = data + len;
+ size_t bufsize = bytes % 64;
+ if (bufsize && bufsize + len >= 64) {
+ // Fill the buffer, and process it.
+ memcpy(buf + bufsize, data, 64 - bufsize);
+ bytes += 64 - bufsize;
+ data += 64 - bufsize;
+ sha1::Transform(s, buf);
+ bufsize = 0;
+ }
+ while (end >= data + 64) {
+ // Process full chunks directly from the source.
+ sha1::Transform(s, data);
+ bytes += 64;
+ data += 64;
+ }
+ if (end > data) {
+ // Fill the buffer with what remains.
+ memcpy(buf + bufsize, data, end - data);
+ bytes += end - data;
+ }
+ return *this;
+}
+
+void CSHA1::Finalize(unsigned char hash[OUTPUT_SIZE]) {
+ static const unsigned char pad[64] = {0x80};
+ unsigned char sizedesc[8];
+ WriteBE64(sizedesc, bytes << 3);
+ Write(pad, 1 + ((119 - (bytes % 64)) % 64));
+ Write(sizedesc, 8);
+ WriteBE32(hash, s[0]);
+ WriteBE32(hash+4, s[1]);
+ WriteBE32(hash+8, s[2]);
+ WriteBE32(hash+12, s[3]);
+ WriteBE32(hash+16, s[4]);
+}
+
+CSHA1& CSHA1::Reset() {
+ bytes = 0;
+ sha1::Initialize(s);
+ return *this;
+}
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-01 08:55:37 +0000