hex_base.h raw

   1  // Copyright (c) 2009-present The Limenka developers
   2  // Distributed under the MIT software license, see the accompanying
   3  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   4  
   5  #ifndef LIMENKA_CRYPTO_HEX_BASE_H
   6  #define LIMENKA_CRYPTO_HEX_BASE_H
   7  
   8  #include <span.h>
   9  
  10  #include <cstddef>
  11  #include <cstdint>
  12  #include <string>
  13  
  14  /**
  15   * Convert a span of bytes to a lower-case hexadecimal string.
  16   */
  17  std::string HexStr(const Span<const uint8_t> s);
  18  inline std::string HexStr(const Span<const char> s) { return HexStr(MakeUCharSpan(s)); }
  19  inline std::string HexStr(const Span<const std::byte> s) { return HexStr(MakeUCharSpan(s)); }
  20  
  21  signed char HexDigit(char c);
  22  
  23  #endif // LIMENKA_CRYPTO_HEX_BASE_H
  24