pkg crypto, type Encapsulator interface, Encapsulate() ([]uint8, []uint8) #75300
pkg crypto/ecdh, type KeyExchanger interface { Curve, ECDH, PublicKey } #75300
pkg crypto/ecdh, type KeyExchanger interface, Curve() Curve #75300
pkg crypto/ecdh, type KeyExchanger interface, ECDH(*PublicKey) ([]uint8, error) #75300
pkg crypto/ecdh, type KeyExchanger interface, PublicKey() *PublicKey #75300

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 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
          // Consuming server 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

&PublicKey{curve: c.curve, q: bytes.Clone(key)}, nil } func ECDH[P Point[P]](c *Curve[P], k *PrivateKey, peer *PublicKey) ([]byte, error) { fipsSelfTest() fips140.RecordApproved() return ecdh(c, k, peer) } func ecdh[P Point[P]](c *Curve[P], k *PrivateKey, peer *PublicKey) ([]byte, error) { if c.curve != k.pub.curve { return nil, errors.New("crypto/ecdh: mismatched curves") } if k.pub.curve != peer.curve { return nil, errors.New("crypto/ecdh: mismatched curves") } // This applies the Shared Secret Computation...

&PublicKey{curve: c.curve, q: bytes.Clone(key)}, nil } func ECDH[P Point[P]](c *Curve[P], k *PrivateKey, peer *PublicKey) ([]byte, error) { fipsSelfTest() fips140.RecordApproved() return ecdh(c, k, peer) } func ecdh[P Point[P]](c *Curve[P], k *PrivateKey, peer *PublicKey) ([]byte, error) { if c.curve != k.pub.curve { return nil, errors.New("crypto/ecdh: mismatched curves") } if k.pub.curve != peer.curve { return nil, errors.New("crypto/ecdh: mismatched curves") } // This applies the Shared Secret Computation...

// ciphers for backward compatibility. In particular, AES-CBC
// and non-ECDHE ciphers.
func TLSCiphersBackwardCompatible() []uint16 {
	return []uint16{
		tls.TLS_CHACHA20_POLY1305_SHA256, // TLS 1.3
		tls.TLS_AES_128_GCM_SHA256,
		tls.TLS_AES_256_GCM_SHA384,
		tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256, // TLS 1.2 ECDHE GCM / POLY1305
		tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,

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0534          ; mapped                 ; 0564          # 1.1  ARMENIAN CAPITAL LETTER DA
0535          ; mapped                 ; 0565          # 1.1  ARMENIAN CAPITAL LETTER ECH
0536          ; mapped                 ; 0566          # 1.1  ARMENIAN CAPITAL LETTER ZA
0537          ; mapped                 ; 0567          # 1.1  ARMENIAN CAPITAL LETTER EH