1 files changed, 61 insertions, 0 deletions
diff --git a/src/buildtool/crypto/hash_impl_sha512.cpp b/src/buildtool/crypto/hash_impl_sha512.cpp
new file mode 100644
index 00000000..802ebf0e
--- /dev/null
+++ b/src/buildtool/crypto/hash_impl_sha512.cpp
@@ -0,0 +1,61 @@
+// Copyright 2022 Huawei Cloud Computing Technology Co., Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "src/buildtool/crypto/hash_impl_sha512.hpp"
+
+#include <array>
+#include <cstdint>
+
+#include "openssl/sha.h"
+
+/// \brief Hash implementation for SHA-512
+class HashImplSha512 final : public Hasher::IHashImpl {
+  public:
+    HashImplSha512() { initialized_ = SHA512_Init(&ctx_) == 1; }
+
+    auto Update(std::string const& data) noexcept -> bool final {
+        return initialized_ and
+               SHA512_Update(&ctx_, data.data(), data.size()) == 1;
+    }
+
+    auto Finalize() && noexcept -> std::optional<std::string> final {
+        if (initialized_) {
+            auto out = std::array<std::uint8_t, SHA512_DIGEST_LENGTH>{};
+            if (SHA512_Final(out.data(), &ctx_) == 1) {
+                return std::string{out.begin(), out.end()};
+            }
+        }
+        return std::nullopt;
+    }
+
+    auto Compute(std::string const& data) && noexcept -> std::string final {
+        if (Update(data)) {
+            auto digest = std::move(*this).Finalize();
+            if (digest) {
+                return *digest;
+            }
+        }
+        FatalError();
+        return {};
+    }
+
+  private:
+    SHA512_CTX ctx_{};
+    bool initialized_{};
+};
+
+/// \brief Factory for SHA-512 implementation
+auto CreateHashImplSha512() -> std::unique_ptr<Hasher::IHashImpl> {
+    return std::make_unique<HashImplSha512>();
+}