xhttp.AmzServerSideEncryptionCustomerAlgorithm: "AES256",
			xhttp.AmzServerSideEncryptionCustomerKey:       "XAm0dRrJsEsyPb1UuFNezv1bl9hxuYsgUVC/MUctE2k=",
			xhttp.AmzServerSideEncryptionCustomerKeyMD5:    "bY4wkxQejw9mUJfo72k53A==",
		},
		metadata: map[string]string{},
	},
	{
		header: map[string]string{
			xhttp.AmzServerSideEncryptionCustomerAlgorithm: "AES256",

		},
		Expected: true,
	}, // 4
	{
		Header: http.Header{
			"X-Amz-Server-Side-Encryption":                []string{"AES256"},
			"X-Amz-Server-Side-Encryption-Aws-Kms-Key-Id": []string{""},
		},
		Expected: true,
	}, // 5
	{Header: http.Header{"X-Amz-Server-Side-Encryption": []string{"AES256"}}, Expected: false}, // 6
}

func TestKMSIsRequested(t *testing.T) {
	for i, test := range kmsIsRequestedTests {

	kexAlgoCurve25519SHA256LibSSH = "******@****.***"
	kexAlgoCurve25519SHA256       = "curve25519-sha256"

	chacha20Poly1305ID = "******@****.***"
	gcm256CipherID     = "aes256******@****.***"
	aes128cbcID        = "aes128-cbc"
	tripledescbcID     = "3des-cbc"
)

var (
	errSFTPPublicKeyBadFormat = errors.New("the public key provided could not be parsed")

	AmzServerSideEncryptionCopyCustomerKeyMD5    = "X-Amz-Copy-Source-Server-Side-Encryption-Customer-Key-Md5"

	AmzEncryptionAES = "AES256"
	AmzEncryptionKMS = "aws:kms"

	// Signature v2 related constants
	AmzSignatureV2 = "Signature"
	AmzAccessKeyID = "AWSAccessKeyId"

	// Response request id.
	AmzRequestID     = "x-amz-request-id"

)

const (
	// SSECustomerKeySize is the size of valid client provided encryption keys in bytes.
	// Currently AWS supports only AES256. So the SSE-C key size is fixed to 32 bytes.
	SSECustomerKeySize = 32

	// SSEIVSize is the size of the IV data
	SSEIVSize = 32 // 32 bytes

	// SSEDAREPackageBlockSize - SSE dare package block size.