stringToSign += getSHA256Hash(buffer[:n])

		date := sumHMAC([]byte("AWS4"+secretKey), []byte(currTime.Format(yyyymmdd)))
		region := sumHMAC(date, []byte(regionStr))
		service := sumHMAC(region, []byte(serviceS3))
		signingKey := sumHMAC(service, []byte("aws4_request"))

		signature = hex.EncodeToString(sumHMAC(signingKey, []byte(stringToSign)))

      if (closed) throw IOException("closed")
      if (!client) return // Nothing to write; servers don't send connection headers!
      if (logger.isLoggable(FINE)) {
        logger.fine(format(">> CONNECTION ${CONNECTION_PREFACE.hex()}"))
      }
      sink.write(CONNECTION_PREFACE)
      sink.flush()
    }
  }

  /** Applies `peerSettings` and then sends a settings ACK. */
  @Throws(IOException::class)

              Longs.tryParse(
                  BigInteger.valueOf(MIN_VALUE).subtract(BigInteger.ONE).toString(), radix))
          .isNull();
    }
    assertWithMessage("Hex string and dec parm").that(Longs.tryParse("FFFF", 10)).isNull();
    assertWithMessage("Mixed hex case")
        .that(Longs.tryParse("ffFF", 16).longValue())
        .isEqualTo(65535);
  }

  /**

              Longs.tryParse(
                  BigInteger.valueOf(MIN_VALUE).subtract(BigInteger.ONE).toString(), radix))
          .isNull();
    }
    assertWithMessage("Hex string and dec parm").that(Longs.tryParse("FFFF", 10)).isNull();
    assertWithMessage("Mixed hex case")
        .that(Longs.tryParse("ffFF", 16).longValue())
        .isEqualTo(65535);
  }

  /**

		if err != nil {
			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
			return
		}

		// Set the correct hex md5sum for the fan-out stream.
		fanOutOpts.MD5Hex = hex.EncodeToString(md5w.Sum(nil))

		concurrentSize := 100
		if runtime.GOMAXPROCS(0) < concurrentSize {
			concurrentSize = runtime.GOMAXPROCS(0)
		}

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"bufio"
	"context"
	"encoding/binary"
	"encoding/gob"
	"encoding/hex"
	"errors"
	"fmt"
	"io"
	"net/http"
	"os/user"
	"path"
	"runtime"
	"runtime/debug"
	"strconv"
	"strings"
	"sync"
	"time"

	"github.com/minio/minio/internal/grid"

Import the modules installed.

Create a random secret key that will be used to sign the JWT tokens.

To generate a secure random secret key use the command:

<div class="termy">

```console
$ openssl rand -hex 32

09d25e094faa6ca2556c818166b7a9563b93f7099f6f0f4caa6cf63b88e8d3e7
```

</div>

And copy the output to the variable `SECRET_KEY` (don't use the one in the example).

    private const val ENTRY_METADATA = 0
    private const val ENTRY_BODY = 1
    private const val ENTRY_COUNT = 2

    @JvmStatic
    fun key(url: HttpUrl): String = url.toString().encodeUtf8().md5().hex()

    @Throws(IOException::class)
    internal fun readInt(source: BufferedSource): Int {
      try {
        val result = source.readDecimalLong()
        val line = source.readUtf8LineStrict()

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"bytes"
	"context"
	"encoding/gob"
	"encoding/hex"
	"encoding/json"
	"errors"
	"fmt"
	"io"
	"net/http"
	"net/url"
	"strconv"
	"strings"
	"sync"
	"sync/atomic"
	"time"

	"github.com/dustin/go-humanize"
	"github.com/klauspost/compress/zstd"

}

func (x xlMetaV2VersionHeader) String() string {
	return fmt.Sprintf("Type: %s, VersionID: %s, Signature: %s, ModTime: %s, Flags: %s, N: %d, M: %d",
		x.Type.String(),
		hex.EncodeToString(x.VersionID[:]),
		hex.EncodeToString(x.Signature[:]),
		time.Unix(0, x.ModTime),
		x.Flags.String(),
		x.EcN, x.EcM,
	)
}

// matchesNotStrict returns whether x and o have both have non-zero version,