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| author | Nicola Murino <nicola.murino@gmail.com> | 2023-07-18 19:01:21 +0200 |
|---|---|---|
| committer | Gopher Robot <gobot@golang.org> | 2023-11-08 19:10:19 +0000 |
| commit | eb61739cd99fb244c7cd188d3c5bae54824e781d (patch) | |
| tree | 0e6aa46d6604aba25c8a7e0953423cae584502ea /ssh/handshake.go | |
| parent | 42c83fffffc70640068263e765db9c9b09cd2ba2 (diff) | |
| download | go-x-crypto-eb61739cd99fb244c7cd188d3c5bae54824e781d.tar.xz | |
ssh: allow to configure public key auth algorithms on the server sidev0.15.0
Fixes golang/go#61244
Change-Id: I29b43e379cf0cdb07b0d6935666491b997157e73
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/510775
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Commit-Queue: Nicola Murino <nicola.murino@gmail.com>
Run-TryBot: Nicola Murino <nicola.murino@gmail.com>
Auto-Submit: Nicola Murino <nicola.murino@gmail.com>
Reviewed-by: Han-Wen Nienhuys <hanwen@google.com>
Diffstat (limited to 'ssh/handshake.go')
| -rw-r--r-- | ssh/handshake.go | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/ssh/handshake.go b/ssh/handshake.go index 70a7369..49bbba7 100644 --- a/ssh/handshake.go +++ b/ssh/handshake.go @@ -11,6 +11,7 @@ import ( "io" "log" "net" + "strings" "sync" ) @@ -50,6 +51,10 @@ type handshakeTransport struct { // connection. hostKeys []Signer + // publicKeyAuthAlgorithms is non-empty if we are the server. In that case, + // it contains the supported client public key authentication algorithms. + publicKeyAuthAlgorithms []string + // hostKeyAlgorithms is non-empty if we are the client. In that case, // we accept these key types from the server as host key. hostKeyAlgorithms []string @@ -141,6 +146,7 @@ func newClientTransport(conn keyingTransport, clientVersion, serverVersion []byt func newServerTransport(conn keyingTransport, clientVersion, serverVersion []byte, config *ServerConfig) *handshakeTransport { t := newHandshakeTransport(conn, &config.Config, clientVersion, serverVersion) t.hostKeys = config.hostKeys + t.publicKeyAuthAlgorithms = config.PublicKeyAuthAlgorithms go t.readLoop() go t.kexLoop() return t @@ -649,6 +655,7 @@ func (t *handshakeTransport) enterKeyExchange(otherInitPacket []byte) error { // message with the server-sig-algs extension if the client supports it. See // RFC 8308, Sections 2.4 and 3.1, and [PROTOCOL], Section 1.9. if !isClient && firstKeyExchange && contains(clientInit.KexAlgos, "ext-info-c") { + supportedPubKeyAuthAlgosList := strings.Join(t.publicKeyAuthAlgorithms, ",") extInfo := &extInfoMsg{ NumExtensions: 2, Payload: make([]byte, 0, 4+15+4+len(supportedPubKeyAuthAlgosList)+4+16+4+1), |