for len(b) > 0 {
		t, n := binary.Uvarint(b)
		if n < 0 {
			break
		}
		b = b[n:]

		typ := ChecksumType(t)
		length := typ.RawByteLen()
		if length == 0 || len(b) < length {
			break
		}
		cs := base64.StdEncoding.EncodeToString(b[:length])
		b = b[length:]
		if typ.Is(ChecksumMultipart) {
			t, n := binary.Uvarint(b)
			if n < 0 {
				break
			}

arcfour256
arcfour128
arcfour
aes128-cbc
3des-cbc
```

`--sftp=mac-algos=...` specifies a default set of MAC algorithms in preference order.
This is based on RFC 4253, section 6.4, but with hmac-md5 variants removed because they have 
reached the end of their useful life.

Valid values: 

```
******@****.***
******@****.***
hmac-sha2-256
hmac-sha2-512
hmac-sha1

	chacha20Poly1305ID,
	"aes128-ctr", "aes192-ctr", "aes256-ctr",
}

// supportedMACs specifies a default set of MAC algorithms in preference order.
// This is based on RFC 4253, section 6.4, but with hmac-md5 variants removed
// because they have reached the end of their useful life.
// https://cs.opensource.google/go/x/crypto/+/refs/tags/v0.22.0:ssh/common.go;l=85
var supportedMACs = []string{

		header.Set("X-Content-Type-Options", "nosniff")                                // Prevent mime-sniff
		header.Set("Strict-Transport-Security", "max-age=31536000; includeSubDomains") // HSTS mitigates variants of MITM attacks

		// Previously, this value was set right before a response was sent to
		// the client. So, logger and Error response XML were not using this

// The health report data can contain the hostname in various forms e.g. host, host:port,
// host:port/drivepath, full url (http://host:port/drivepath)
// The anonymizer map will have mappings for all these variants for efficiently replacing
// any of these strings to the anonymized versions at the time of health report generation.
func anonymizeHost(hostAnonymizer map[string]string, endpoint Endpoint, poolNum int, srvrNum int) {

// with control characters, this is a specialized extension
// to support AWS S3 compatible behavior.
//
// Do not use this function for anything other than ListObjects()
// variants, please open a github discussion if you wish to use
// this in other places.
func encodeResponseList(response interface{}) []byte {
	var buf bytes.Buffer
	buf.WriteString(xxml.Header)