| 429 | namespace { |
| 430 | |
| 431 | std::string SHA256DigestToHex(span<unsigned char> digest) { |
| 432 | std::ostringstream hex; |
| 433 | for (const auto c : digest) { |
| 434 | hex << std::hex << std::setw(2) << std::setfill('0') |
| 435 | << static_cast<unsigned int>(c); |
| 436 | } |
| 437 | return hex.str(); |
| 438 | } |
| 439 | |
| 440 | } // namespace |
| 441 |