mirror of
https://github.com/kidfromjupiter/nearby.git
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59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
// Copyright 2020 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "internal/platform/implementation/crypto.h"
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#include <cstdint>
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#include <string>
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#include "absl/strings/string_view.h"
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#include "internal/platform/byte_array.h"
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#if defined NEARBY_WINDOWS_DLL
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#include "third_party/openssl/boringssl/src/include/openssl/digest.h"
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#else
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#include "src/include/openssl/digest.h"
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#endif
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// Function implementations for platform/api/crypto.h.
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namespace location {
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namespace nearby {
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// Initialize global crypto state.
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void Crypto::Init() {}
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static ByteArray Hash(absl::string_view input, const EVP_MD* algo) {
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unsigned int md_out_size = EVP_MAX_MD_SIZE;
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uint8_t digest_buffer[EVP_MAX_MD_SIZE];
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if (input.empty()) return {};
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if (!EVP_Digest(input.data(), input.size(), digest_buffer, &md_out_size, algo,
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nullptr))
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return {};
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return ByteArray{reinterpret_cast<char*>(digest_buffer), md_out_size};
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}
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// Return MD5 hash of input.
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ByteArray Crypto::Md5(absl::string_view input) {
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return Hash(input, EVP_md5());
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}
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// Return SHA256 hash of input.
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ByteArray Crypto::Sha256(absl::string_view input) {
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return Hash(input, EVP_sha256());
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}
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} // namespace nearby
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} // namespace location
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