mirror of
https://github.com/kidfromjupiter/nearby.git
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Timothy Hutchins
ff9438a3ed
This is the start of the implementing for the Linux platform. I aim to make this as similar to the Windows platform as possible, although due to the fundamental difference in the two OS's, there will be things that need to be different. As such, I will be using the Windows platform files as a base, and reimplementing the functions with Linux equivalents. I am sure this will have bugs, which by my best attempt will be fixed when found.
55 lines
1.5 KiB
C++
55 lines
1.5 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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#include <openssl/evp.h>
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// Function implementations for platform/implementation/crypto.h.
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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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