diff options
Diffstat (limited to 'vendor/golang.org/x/crypto/ssh/handshake.go')
| -rw-r--r-- | vendor/golang.org/x/crypto/ssh/handshake.go | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/vendor/golang.org/x/crypto/ssh/handshake.go b/vendor/golang.org/x/crypto/ssh/handshake.go index f815cdb4..653dc4d2 100644 --- a/vendor/golang.org/x/crypto/ssh/handshake.go +++ b/vendor/golang.org/x/crypto/ssh/handshake.go @@ -479,10 +479,12 @@ func (t *handshakeTransport) sendKexInit() error { // As a client we opt in to receiving SSH_MSG_EXT_INFO so we know what // algorithms the server supports for public key authentication. See RFC - // 8303, Section 2.1. - msg.KexAlgos = make([]string, 0, len(t.config.KeyExchanges)+1) - msg.KexAlgos = append(msg.KexAlgos, t.config.KeyExchanges...) - msg.KexAlgos = append(msg.KexAlgos, "ext-info-c") + // 8308, Section 2.1. + if firstKeyExchange := t.sessionID == nil; firstKeyExchange { + msg.KexAlgos = make([]string, 0, len(t.config.KeyExchanges)+1) + msg.KexAlgos = append(msg.KexAlgos, t.config.KeyExchanges...) + msg.KexAlgos = append(msg.KexAlgos, "ext-info-c") + } } packet := Marshal(msg) |