Robin E. R. Davies
41 lines
926 B
C++
41 lines
926 B
C++
#include "AesDigest.hpp"
|
|
|
|
#include <array>
|
|
#include <openssl/evp.h>
|
|
#include <stdexcept>
|
|
|
|
using namespace pipedal;
|
|
|
|
|
|
std::string pipedal::AesDigest(const std::string &text)
|
|
{
|
|
std::array<unsigned char, EVP_MAX_MD_SIZE> digest{};
|
|
size_t digestLength = 0;
|
|
|
|
if (EVP_Q_digest(
|
|
nullptr,
|
|
"SHA256",
|
|
nullptr,
|
|
reinterpret_cast<const unsigned char *>(text.data()),
|
|
text.size(),
|
|
digest.data(),
|
|
&digestLength)
|
|
!= 1)
|
|
{
|
|
throw std::runtime_error("EVP_Q_digest(SHA256) failed.");
|
|
}
|
|
|
|
static constexpr char hexDigits[] = "0123456789abcdef";
|
|
std::string result(digestLength * 2, '\0');
|
|
for (size_t i = 0; i < digestLength; ++i)
|
|
{
|
|
unsigned char value = digest[i];
|
|
result[2 * i] = hexDigits[(value >> 4) & 0x0F];
|
|
result[2 * i + 1] = hexDigits[value & 0x0F];
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
|