Function base16Encode

plugins/origin_server_auth/aws_auth_v4.cc:50–67

* @brief Lower-case Base16 encode a character string (hexadecimal format) * * @see AWS spec: http://docs.aws.amazon.com/AmazonS3/latest/API/sig-v4-header-based-auth.html * Base16 RFC4648: https://tools.ietf.org/html/rfc4648#section-8 * * @param in ptr to an input counted string to be base16 encoded. * @param inLen input character string length * @return base16 encoded string. */

 * @return base16 encoded string.
 */
String
base16Encode(const char *in, size_t inLen)
{
  if (nullptr == in || inLen == 0) {
    return {};
  }

  std::stringstream result;

  const char *src    = in;
  const char *srcEnd = in + inLen;

  while (src < srcEnd) {
    result << std::setfill('0') << std::setw(2) << std::hex << static_cast<int>((*src) & 0xFF);
    src++;
  }
  return result.str();
}

/**
 * @brief URI-encode a character string (AWS specific version, see spec)