- **Concurrent Utilities** (`org.codelibs.core.concurrent`) - Thread-safe collections and concurrency helpers using modern concurrent APIs
- **Crypto & Security** (`org.codelibs.core.crypto`, `org.codelibs.core.security`) - Basic cryptographic utilities, message digest operations, and secure random generation

	fanOutOpts := fanOutOptions{Checksum: checksum}
	if crypto.Requested(formValues) {
		if crypto.SSECopy.IsRequested(r.Header) {
			writeErrorResponse(ctx, w, toAPIError(ctx, errInvalidEncryptionParameters), r.URL)
			return
		}

		if crypto.SSEC.IsRequested(r.Header) && crypto.S3.IsRequested(r.Header) {
			writeErrorResponse(ctx, w, toAPIError(ctx, crypto.ErrIncompatibleEncryptionMethod), r.URL)
			return
		}

	"encoding/base64"
	"encoding/binary"
	"errors"
	"fmt"
	"maps"
	"math/rand"
	"net/http"
	"path"
	"strings"
	"sync"
	"time"

	"github.com/minio/madmin-go/v3"
	"github.com/minio/minio/internal/crypto"
	"github.com/minio/minio/internal/hash"
	"github.com/minio/minio/internal/kms"
	"github.com/prometheus/client_golang/prometheus"
)

//go:generate msgp -file $GOFILE

var (

//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"bytes"
	"context"
	"crypto/rand"
	"io"
	"testing"

	"github.com/dustin/go-humanize"
)

type badDisk struct{ StorageAPI }

func (a badDisk) String() string {
	return "bad-disk"
}

//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"context"
	"crypto/md5"
	"encoding/hex"
	"errors"
	"fmt"
	"io"
	"math/rand"
	"os"
	"reflect"
	"strings"
	"sync"
	"time"

	"github.com/minio/minio-go/v7/pkg/set"
	"github.com/minio/minio/internal/grid"

	"github.com/minio/minio-go/v7"
	"github.com/minio/minio-go/v7/pkg/credentials"
	xioutil "github.com/minio/minio/internal/ioutil"
	"github.com/minio/pkg/v3/mimedb"
	"github.com/pkg/sftp"
	"golang.org/x/crypto/ssh"
)

// Maximum write offset for incoming SFTP blocks.
// Set to 100MiB to prevent hostile DOS attacks.
const ftpMaxWriteOffset = 100 << 20

type sftpDriver struct {
	permissions *ssh.Permissions

//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"bytes"
	"crypto/hmac"
	"encoding/hex"
	"io"
	"net/http"
	"slices"
	"strconv"
	"strings"

	"github.com/minio/minio/internal/auth"
	"github.com/minio/minio/internal/hash/sha256"
	xhttp "github.com/minio/minio/internal/http"

// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package crypto

import (
	"context"
	"encoding/base64"
	"errors"
	"net/http"
	"path"
	"strings"

	jsoniter "github.com/json-iterator/go"
	xhttp "github.com/minio/minio/internal/http"

	m := cloneMSS(metadata)

	switch kind, _ := crypto.IsEncrypted(metadata); kind {
	case crypto.S3:
		m[xhttp.AmzServerSideEncryption] = xhttp.AmzEncryptionAES
	case crypto.S3KMS:
		m[xhttp.AmzServerSideEncryption] = xhttp.AmzEncryptionKMS
		m[xhttp.AmzServerSideEncryptionKmsID] = kmsKeyIDFromMetadata(metadata)
		if kmsCtx, ok := metadata[crypto.MetaContext]; ok {
			m[xhttp.AmzServerSideEncryptionKmsContext] = kmsCtx

		}
	}

	encMetadata := map[string]string{}

	if crypto.Requested(r.Header) {
		if crypto.SSECopy.IsRequested(r.Header) {
			writeErrorResponse(ctx, w, toAPIError(ctx, errInvalidEncryptionParameters), r.URL)
			return
		}

		if crypto.SSEC.IsRequested(r.Header) && crypto.S3.IsRequested(r.Header) {
			writeErrorResponse(ctx, w, toAPIError(ctx, crypto.ErrIncompatibleEncryptionMethod), r.URL)
			return
		}