if objInfo.DeleteMarker || !objInfo.VersionPurgeStatus.Empty() {
		return nil
	}
	sseKMS := crypto.S3KMS.IsEncrypted(objInfo.UserDefined)
	sseS3 := crypto.S3.IsEncrypted(objInfo.UserDefined)
	if !sseKMS && !sseS3 { // neither sse-s3 nor sse-kms disallowed
		return errInvalidEncryptionParameters
	}
	if sseKMS && r.Encryption.Type == sses3 { // previously encrypted with sse-kms, now sse-s3 disallowed

	etag := strings.TrimSpace(hdr.Get(xhttp.MinIOSourceETag))
	if crypto.S3KMS.IsRequested(hdr) {
		keyID, context, err := crypto.S3KMS.ParseHTTP(hdr)
		if err != nil {
			return ObjectOptions{}, err
		}
		sseKms, err := encrypt.NewSSEKMS(keyID, context)
		if err != nil {
			return ObjectOptions{}, err
		}
		op := ObjectOptions{
			ServerSideEncryption: sseKms,
			UserDefined:          metadata,
			MTime:                mtime,

	var objEncKey crypto.ObjectKey
	sseCopyKMS := crypto.S3KMS.IsEncrypted(srcInfo.UserDefined)
	sseCopyS3 := crypto.S3.IsEncrypted(srcInfo.UserDefined)
	sseCopyC := crypto.SSEC.IsEncrypted(srcInfo.UserDefined) && crypto.SSECopy.IsRequested(r.Header)
	sseC := crypto.SSEC.IsRequested(r.Header)
	sseS3 := crypto.S3.IsRequested(r.Header)
	sseKMS := crypto.S3KMS.IsRequested(r.Header)

		return nil
	case crypto.S3KMS:
		if GlobalKMS == nil {
			return errKMSNotConfigured
		}
		objectKey, err := crypto.S3KMS.UnsealObjectKey(GlobalKMS, metadata, bucket, object)
		if err != nil {
			return err
		}

		if len(cryptoCtx) == 0 {
			_, _, _, cryptoCtx, err = crypto.S3KMS.ParseMetadata(metadata)
			if err != nil {
				return err
			}
		}

Most of these ideas would be more or less **independent**, and in most cases you should only need to study them if they apply directly to **your project**.

If something seems interesting and useful to your project, go ahead and check it, but otherwise, you might probably just skip them.

/// tip

                // Values should be within reasonable range for security flags
                assertTrue(value <= 0xFFFF, "Constant " + field.getName() + " value seems unusually large");
            }
        }
    }

    /**
     * Helper method to check if a number is a power of two
     */
    private boolean isPowerOfTwo(int n) {

			writeErrorResponse(ctx, w, toAPIError(ctx, crypto.ErrIncompatibleEncryptionMethod), r.URL)
			return
		}

		if crypto.SSEC.IsRequested(r.Header) && crypto.S3KMS.IsRequested(r.Header) {
			writeErrorResponse(ctx, w, toAPIError(ctx, crypto.ErrIncompatibleEncryptionMethod), r.URL)
			return
		}

		_, sourceReplReq := r.Header[xhttp.MinIOSourceReplicationRequest]

Some time ago, <a href="https://github.com/fastapi/fastapi/issues/3#issuecomment-454956920" class="external-link" target="_blank">a **FastAPI** user asked</a>:

> What’s the history of this project? It seems to have come from nowhere to awesome in a few weeks [...]

Here's a little bit of that history.

## Alternatives { #alternatives }

        }

        @Test
        @DisplayName("Should handle empty extensions safely")
        void testEmptyExtensions() throws IOException {
            // Empty extension seems to match first entry in mime.map
            String result = mimeMap.getMimeType("");
            assertNotNull(result);
            // With custom default, empty still returns the first match

func (api objectAPIHandlers) getObjectInArchiveFileHandler(ctx context.Context, objectAPI ObjectLayer, bucket, object string, w http.ResponseWriter, r *http.Request) {
	if crypto.S3.IsRequested(r.Header) || crypto.S3KMS.IsRequested(r.Header) { // If SSE-S3 or SSE-KMS present -> AWS fails with undefined error
		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrBadRequest), r.URL)
		return
	}