ssh-dss
```

`--sftp=kex-algos=...` specifies the supported key-exchange algorithms in preference order.

Valid values: 

```
curve25519-sha256
******@****.***
ecdh-sha2-nistp256
ecdh-sha2-nistp384
ecdh-sha2-nistp521
diffie-hellman-group14-sha256
diffie-hellman-group16-sha512
diffie-hellman-group14-sha1
diffie-hellman-group1-sha1
```

	kexAlgoDH14SHA256             = "diffie-hellman-group14-sha256"
	kexAlgoDH16SHA512             = "diffie-hellman-group16-sha512"
	kexAlgoECDH256                = "ecdh-sha2-nistp256"
	kexAlgoECDH384                = "ecdh-sha2-nistp384"
	kexAlgoECDH521                = "ecdh-sha2-nistp521"
	kexAlgoCurve25519SHA256LibSSH = "******@****.***"
	kexAlgoCurve25519SHA256       = "curve25519-sha256"

          // Consuming server Certificate handshake message
          // Consuming server CertificateStatus handshake message
          // Found trusted certificate
          // Consuming ECDH ServerKeyExchange handshake message
          // Consuming ServerHelloDone handshake message
          // Produced ECDHE ClientKeyExchange handshake message
          // Produced client Finished handshake message

pkg context, type CancelCauseFunc func(error) #51365
pkg crypto/ecdh, func P256() Curve #52221
pkg crypto/ecdh, func P384() Curve #52221
pkg crypto/ecdh, func P521() Curve #52221
pkg crypto/ecdh, func X25519() Curve #52221
pkg crypto/ecdh, method (*PrivateKey) Bytes() []uint8 #52221
pkg crypto/ecdh, method (*PrivateKey) Curve() Curve #52221
pkg crypto/ecdh, method (*PrivateKey) ECDH(*PublicKey) ([]uint8, error) #52221