81 lines
1.8 KiB
C++
81 lines
1.8 KiB
C++
#include "common/Crypto.h"
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#include <drogon/utils/Utilities.h>
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#include <openssl/crypto.h>
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#include <openssl/hmac.h>
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#include <iomanip>
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#include <random>
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#include <sstream>
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#include <string>
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namespace visione::crypto
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{
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namespace
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{
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std::string toHex(const unsigned char *data, size_t size)
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{
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std::ostringstream stream;
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stream << std::hex << std::uppercase << std::setfill('0');
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for (size_t i = 0; i < size; ++i)
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{
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stream << std::setw(2) << static_cast<int>(data[i]);
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}
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return stream.str();
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}
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} // namespace
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std::string sha256(const std::string &value)
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{
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return drogon::utils::getSha256(value);
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}
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std::string hmacSha256Hex(const std::string &key, const std::string &value)
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{
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unsigned char digest[EVP_MAX_MD_SIZE];
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unsigned int digestSize = 0;
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HMAC(EVP_sha256(),
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key.data(),
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static_cast<int>(key.size()),
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reinterpret_cast<const unsigned char *>(value.data()),
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value.size(),
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digest,
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&digestSize);
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return toHex(digest, digestSize);
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}
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bool constantTimeEquals(const std::string &left, const std::string &right)
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{
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if (left.size() != right.size())
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{
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return false;
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}
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return CRYPTO_memcmp(left.data(), right.data(), left.size()) == 0;
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}
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std::string randomNumericCode(int digits)
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{
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std::random_device device;
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std::mt19937 generator(device());
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std::uniform_int_distribution<int> distribution(0, 9);
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std::string code;
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code.reserve(static_cast<size_t>(digits));
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for (int i = 0; i < digits; ++i)
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{
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code.push_back(static_cast<char>('0' + distribution(generator)));
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}
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return code;
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}
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std::string randomToken()
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{
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return drogon::utils::getUuid() + drogon::utils::getUuid();
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}
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std::string hashSecret(const std::string &secret)
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{
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return sha256("visione:" + secret);
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}
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} // namespace visione::crypto
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