those notices that do not pertain to any part of the Derivative Works, in at 
least one of the following places: within a NOTICE text file distributed as 
part of the Derivative Works; within the Source form or documentation, if 
provided along with the Derivative Works; or, within a display generated by 
the Derivative Works, if and wherever such third-party notices normally 

	// InsecureSealAlgorithm is the legacy encryption/sealing algorithm used
	// to derive & seal the key-encryption-key and to en/decrypt the object data.
	// This algorithm should not be used for new objects because its key derivation
	// is not optimal. See: https://github.com/minio/minio/pull/6121
	InsecureSealAlgorithm = "DARE-SHA256"
)

// Type represents an AWS SSE type:
//   - SSE-C
//   - SSE-S3
//   - SSE-KMS
type Type interface {

- Reduced server startup time. For IAM encryption with the root credentials, MinIO had
   to use a memory-hard function (Argon2) that (on purpose) consumes a lot of memory and CPU.
   The new KMS-based approach can use a key derivation function that is orders of magnitudes
   cheaper w.r.t. memory and CPU.
- Root credentials can now be changed easily. Before, a two-step process was required to

import org.bouncycastle.crypto.generators.KDFCounterBytesGenerator;
import org.bouncycastle.crypto.macs.HMac;
import org.bouncycastle.crypto.params.KDFCounterParameters;


/**
 * SMB3 SP800-108 Counter Mode Key Derivation
 * 
 * @author mbechler
 *
 */
final class Smb3KeyDerivation {

    private static final byte[] SIGNCONTEXT_300 = toCBytes("SmbSign");
    private static final byte[] SIGNLABEL_300 = toCBytes("SMB2AESCMAC");

	// in multiple parts - via the S3 multipart API.
	MetaMultipart = "X-Minio-Internal-Encrypted-Multipart"

	// MetaIV is the random initialization vector (IV) used for
	// the MinIO-internal key derivation.
	MetaIV = "X-Minio-Internal-Server-Side-Encryption-Iv"

	// MetaAlgorithm is the algorithm used to derive internal keys
	// and encrypt the objects.
	MetaAlgorithm = "X-Minio-Internal-Server-Side-Encryption-Seal-Algorithm"