Make CHash256 and CHash160 consume Spans

src/bench/chacha_poly_aead.cpp

@@ -93,7 +93,7 @@ static void HASH(benchmark::Bench& bench, size_t buffersize)
     uint8_t hash[CHash256::OUTPUT_SIZE];
     std::vector<uint8_t> in(buffersize,0);
     bench.batch(in.size()).unit("byte").run([&] {
-        CHash256().Write(in.data(), in.size()).Finalize(hash);
+        CHash256().Write(in).Finalize(hash);
     });
 }
 

src/bench/verify_script.cpp

@@ -34,7 +34,7 @@ static void VerifyScriptBench(benchmark::Bench& bench)
     key.Set(vchKey.begin(), vchKey.end(), false);
     CPubKey pubkey = key.GetPubKey();
     uint160 pubkeyHash;
-    CHash160().Write(pubkey.begin(), pubkey.size()).Finalize(pubkeyHash.begin());
+    CHash160().Write(pubkey).Finalize(pubkeyHash.begin());
 
     // Script.
     CScript scriptPubKey = CScript() << witnessversion << ToByteVector(pubkeyHash);

src/blockfilter.cpp

@@ -291,7 +291,7 @@ uint256 BlockFilter::GetHash() const
     const std::vector<unsigned char>& data = GetEncodedFilter();
 
     uint256 result;
-    CHash256().Write(data.data(), data.size()).Finalize(result.begin());
+    CHash256().Write(data).Finalize(result.begin());
     return result;
 }
 
@@ -301,8 +301,8 @@ uint256 BlockFilter::ComputeHeader(const uint256& prev_header) const
 
     uint256 result;
     CHash256()
-        .Write(filter_hash.begin(), filter_hash.size())
+        .Write(filter_hash)
-        .Write(prev_header.begin(), prev_header.size())
+        .Write(prev_header)
         .Finalize(result.begin());
     return result;
 }

src/hash.h

@@ -31,8 +31,8 @@ public:
         sha.Reset().Write(buf, CSHA256::OUTPUT_SIZE).Finalize(hash);
     }
 
-    CHash256& Write(const unsigned char *data, size_t len) {
+    CHash256& Write(Span<const unsigned char> input) {
-        sha.Write(data, len);
+        sha.Write(input.data(), input.size());
         return *this;
     }
 
@@ -55,8 +55,8 @@ public:
         CRIPEMD160().Write(buf, CSHA256::OUTPUT_SIZE).Finalize(hash);
     }
 
-    CHash160& Write(const unsigned char *data, size_t len) {
+    CHash160& Write(Span<const unsigned char> input) {
-        sha.Write(data, len);
+        sha.Write(input.data(), input.size());
         return *this;
     }
 
@@ -72,7 +72,7 @@ inline uint256 Hash(const T1 pbegin, const T1 pend)
 {
     static const unsigned char pblank[1] = {};
     uint256 result;
-    CHash256().Write(pbegin == pend ? pblank : (const unsigned char*)&pbegin[0], (pend - pbegin) * sizeof(pbegin[0]))
+    CHash256().Write({pbegin == pend ? pblank : (const unsigned char*)&pbegin[0], (pend - pbegin) * sizeof(pbegin[0])})
               .Finalize((unsigned char*)&result);
     return result;
 }
@@ -83,8 +83,8 @@ inline uint256 Hash(const T1 p1begin, const T1 p1end,
                     const T2 p2begin, const T2 p2end) {
     static const unsigned char pblank[1] = {};
     uint256 result;
-    CHash256().Write(p1begin == p1end ? pblank : (const unsigned char*)&p1begin[0], (p1end - p1begin) * sizeof(p1begin[0]))
+    CHash256().Write({p1begin == p1end ? pblank : (const unsigned char*)&p1begin[0], (p1end - p1begin) * sizeof(p1begin[0])})
-              .Write(p2begin == p2end ? pblank : (const unsigned char*)&p2begin[0], (p2end - p2begin) * sizeof(p2begin[0]))
+              .Write({p2begin == p2end ? pblank : (const unsigned char*)&p2begin[0], (p2end - p2begin) * sizeof(p2begin[0])})
               .Finalize((unsigned char*)&result);
     return result;
 }
@@ -95,7 +95,7 @@ inline uint160 Hash160(const T1 pbegin, const T1 pend)
 {
     static unsigned char pblank[1] = {};
     uint160 result;
-    CHash160().Write(pbegin == pend ? pblank : (const unsigned char*)&pbegin[0], (pend - pbegin) * sizeof(pbegin[0]))
+    CHash160().Write({pbegin == pend ? pblank : (const unsigned char*)&pbegin[0], (pend - pbegin) * sizeof(pbegin[0])})
               .Finalize((unsigned char*)&result);
     return result;
 }
@@ -129,7 +129,7 @@ public:
     int GetVersion() const { return nVersion; }
 
     void write(const char *pch, size_t size) {
-        ctx.Write((const unsigned char*)pch, size);
+        ctx.Write({(const unsigned char*)pch, size});
     }
 
     // invalidates the object

src/key.cpp

@@ -237,7 +237,7 @@ bool CKey::VerifyPubKey(const CPubKey& pubkey) const {
     std::string str = "Bitcoin key verification\n";
     GetRandBytes(rnd, sizeof(rnd));
     uint256 hash;
-    CHash256().Write((unsigned char*)str.data(), str.size()).Write(rnd, sizeof(rnd)).Finalize(hash.begin());
+    CHash256().Write(MakeUCharSpan(str)).Write(rnd).Finalize(hash.begin());
     std::vector<unsigned char> vchSig;
     Sign(hash, vchSig);
     return pubkey.Verify(hash, vchSig);

src/net.cpp

@@ -685,7 +685,7 @@ int V1TransportDeserializer::readData(const char *pch, unsigned int nBytes)
         vRecv.resize(std::min(hdr.nMessageSize, nDataPos + nCopy + 256 * 1024));
     }
 
-    hasher.Write((const unsigned char*)pch, nCopy);
+    hasher.Write({(const unsigned char*)pch, nCopy});
     memcpy(&vRecv[nDataPos], pch, nCopy);
     nDataPos += nCopy;
 

src/script/interpreter.cpp

@@ -986,9 +986,9 @@ bool EvalScript(std::vector<std::vector<unsigned char> >& stack, const CScript&
                     else if (opcode == OP_SHA256)
                         CSHA256().Write(vch.data(), vch.size()).Finalize(vchHash.data());
                     else if (opcode == OP_HASH160)
-                        CHash160().Write(vch.data(), vch.size()).Finalize(vchHash.data());
+                        CHash160().Write(vch).Finalize(vchHash.data());
                     else if (opcode == OP_HASH256)
-                        CHash256().Write(vch.data(), vch.size()).Finalize(vchHash.data());
+                        CHash256().Write(vch).Finalize(vchHash.data());
                     popstack(stack);
                     stack.push_back(vchHash);
                 }

src/test/crypto_tests.cpp

@@ -743,7 +743,7 @@ BOOST_AUTO_TEST_CASE(sha256d64)
             in[j] = InsecureRandBits(8);
         }
         for (int j = 0; j < i; ++j) {
-            CHash256().Write(in + 64 * j, 64).Finalize(out1 + 32 * j);
+            CHash256().Write({in + 64 * j, 64}).Finalize(out1 + 32 * j);
         }
         SHA256D64(out2, in, i);
         BOOST_CHECK(memcmp(out1, out2, 32 * i) == 0);

src/test/fuzz/crypto.cpp

@@ -44,8 +44,8 @@ void test_one_input(const std::vector<uint8_t>& buffer)
                 }
             }
 
-            (void)hash160.Write(data.data(), data.size());
+            (void)hash160.Write(data);
-            (void)hash256.Write(data.data(), data.size());
+            (void)hash256.Write(data);
             (void)hmac_sha256.Write(data.data(), data.size());
             (void)hmac_sha512.Write(data.data(), data.size());
             (void)ripemd160.Write(data.data(), data.size());

src/test/key_tests.cpp

@@ -196,7 +196,7 @@ BOOST_AUTO_TEST_CASE(key_key_negation)
     std::string str = "Bitcoin key verification\n";
     GetRandBytes(rnd, sizeof(rnd));
     uint256 hash;
-    CHash256().Write((unsigned char*)str.data(), str.size()).Write(rnd, sizeof(rnd)).Finalize(hash.begin());
+    CHash256().Write(MakeUCharSpan(str)).Write(rnd).Finalize(hash.begin());
 
     // import the static test key
     CKey key = DecodeSecret(strSecret1C);

src/test/merkle_tests.cpp

@@ -60,7 +60,7 @@ static void MerkleComputation(const std::vector<uint256>& leaves, uint256* proot
                 }
             }
             mutated |= (inner[level] == h);
-            CHash256().Write(inner[level].begin(), 32).Write(h.begin(), 32).Finalize(h.begin());
+            CHash256().Write(inner[level]).Write(h).Finalize(h.begin());
         }
         // Store the resulting hash at inner position level.
         inner[level] = h;
@@ -86,7 +86,7 @@ static void MerkleComputation(const std::vector<uint256>& leaves, uint256* proot
         if (pbranch && matchh) {
             pbranch->push_back(h);
         }
-        CHash256().Write(h.begin(), 32).Write(h.begin(), 32).Finalize(h.begin());
+        CHash256().Write(h).Write(h).Finalize(h.begin());
         // Increment count to the value it would have if two entries at this
         // level had existed.
         count += (((uint32_t)1) << level);
@@ -101,7 +101,7 @@ static void MerkleComputation(const std::vector<uint256>& leaves, uint256* proot
                     matchh = true;
                 }
             }
-            CHash256().Write(inner[level].begin(), 32).Write(h.begin(), 32).Finalize(h.begin());
+            CHash256().Write(inner[level]).Write(h).Finalize(h.begin());
             level++;
         }
     }

src/test/script_standard_tests.cpp

@@ -216,7 +216,7 @@ BOOST_AUTO_TEST_CASE(script_standard_ExtractDestination)
     s << OP_0 << ToByteVector(pubkey.GetID());
     BOOST_CHECK(ExtractDestination(s, address));
     WitnessV0KeyHash keyhash;
-    CHash160().Write(pubkey.begin(), pubkey.size()).Finalize(keyhash.begin());
+    CHash160().Write(pubkey).Finalize(keyhash.begin());
     BOOST_CHECK(boost::get<WitnessV0KeyHash>(&address) && *boost::get<WitnessV0KeyHash>(&address) == keyhash);
 
     // TxoutType::WITNESS_V0_SCRIPTHASH

src/test/script_tests.cpp

@@ -282,7 +282,7 @@ public:
         CScript scriptPubKey = script;
         if (wm == WitnessMode::PKH) {
             uint160 hash;
-            CHash160().Write(&script[1], script.size() - 1).Finalize(hash.begin());
+            CHash160().Write(MakeSpan(script).subspan(1)).Finalize(hash.begin());
             script = CScript() << OP_DUP << OP_HASH160 << ToByteVector(hash) << OP_EQUALVERIFY << OP_CHECKSIG;
             scriptPubKey = CScript() << witnessversion << ToByteVector(hash);
         } else if (wm == WitnessMode::SH) {

src/test/settings_tests.cpp

@@ -228,7 +228,7 @@ BOOST_FIXTURE_TEST_CASE(Merge, MergeTestingSetup)
         if (OnlyHasDefaultSectionSetting(settings, network, name)) desc += " ignored";
         desc += "\n";
 
-        out_sha.Write((const unsigned char*)desc.data(), desc.size());
+        out_sha.Write(MakeUCharSpan(desc));
         if (out_file) {
             BOOST_REQUIRE(fwrite(desc.data(), 1, desc.size(), out_file) == desc.size());
         }

src/test/util_tests.cpp

@@ -1009,7 +1009,7 @@ BOOST_FIXTURE_TEST_CASE(util_ArgsMerge, ArgsMergeTestingSetup)
 
         desc += "\n";
 
-        out_sha.Write((const unsigned char*)desc.data(), desc.size());
+        out_sha.Write(MakeUCharSpan(desc));
         if (out_file) {
             BOOST_REQUIRE(fwrite(desc.data(), 1, desc.size(), out_file) == desc.size());
         }
@@ -1112,7 +1112,7 @@ BOOST_FIXTURE_TEST_CASE(util_ChainMerge, ChainMergeTestingSetup)
         }
         desc += "\n";
 
-        out_sha.Write((const unsigned char*)desc.data(), desc.size());
+        out_sha.Write(MakeUCharSpan(desc));
         if (out_file) {
             BOOST_REQUIRE(fwrite(desc.data(), 1, desc.size(), out_file) == desc.size());
         }

src/validation.cpp

@@ -3434,7 +3434,7 @@ std::vector<unsigned char> GenerateCoinbaseCommitment(CBlock& block, const CBloc
     if (consensusParams.SegwitHeight != std::numeric_limits<int>::max()) {
         if (commitpos == -1) {
             uint256 witnessroot = BlockWitnessMerkleRoot(block, nullptr);
-            CHash256().Write(witnessroot.begin(), 32).Write(ret.data(), 32).Finalize(witnessroot.begin());
+            CHash256().Write(witnessroot).Write(ret).Finalize(witnessroot.begin());
             CTxOut out;
             out.nValue = 0;
             out.scriptPubKey.resize(MINIMUM_WITNESS_COMMITMENT);
@@ -3579,7 +3579,7 @@ static bool ContextualCheckBlock(const CBlock& block, BlockValidationState& stat
             if (block.vtx[0]->vin[0].scriptWitness.stack.size() != 1 || block.vtx[0]->vin[0].scriptWitness.stack[0].size() != 32) {
                 return state.Invalid(BlockValidationResult::BLOCK_MUTATED, "bad-witness-nonce-size", strprintf("%s : invalid witness reserved value size", __func__));
             }
-            CHash256().Write(hashWitness.begin(), 32).Write(&block.vtx[0]->vin[0].scriptWitness.stack[0][0], 32).Finalize(hashWitness.begin());
+            CHash256().Write(hashWitness).Write(block.vtx[0]->vin[0].scriptWitness.stack[0]).Finalize(hashWitness.begin());
             if (memcmp(hashWitness.begin(), &block.vtx[0]->vout[commitpos].scriptPubKey[6], 32)) {
                 return state.Invalid(BlockValidationResult::BLOCK_MUTATED, "bad-witness-merkle-match", strprintf("%s : witness merkle commitment mismatch", __func__));
             }