Update golang.org/x/crypto (#19097) (#19098)

Backport #19097

* Update golang.org/x/crypto (#19097)

- Backport #19097

* Fix deprecation notice

* Backport workaround removal

go.mod

@@ -121,7 +121,7 @@ require (
 	go.uber.org/atomic v1.9.0 // indirect
 	go.uber.org/multierr v1.7.0 // indirect
 	go.uber.org/zap v1.19.0 // indirect
-	golang.org/x/crypto v0.0.0-20211117183948-ae814b36b871
+	golang.org/x/crypto v0.0.0-20220315160706-3147a52a75dd
 	golang.org/x/net v0.0.0-20220127200216-cd36cc0744dd
 	golang.org/x/oauth2 v0.0.0-20210628180205-a41e5a781914
 	golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e

go.sum

@@ -1262,8 +1262,9 @@ golang.org/x/crypto v0.0.0-20210421170649-83a5a9bb288b/go.mod h1:T9bdIzuCu7OtxOm
 golang.org/x/crypto v0.0.0-20210513164829-c07d793c2f9a/go.mod h1:P+XmwS30IXTQdn5tA2iutPOUgjI07+tq3H3K9MVA1s8=
 golang.org/x/crypto v0.0.0-20210616213533-5ff15b29337e/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/crypto v0.0.0-20210817164053-32db794688a5/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
-golang.org/x/crypto v0.0.0-20211117183948-ae814b36b871 h1:/pEO3GD/ABYAjuakUS6xSEmmlyVS4kxBNkeA9tLJiTI=
 golang.org/x/crypto v0.0.0-20211117183948-ae814b36b871/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
+golang.org/x/crypto v0.0.0-20220315160706-3147a52a75dd h1:XcWmESyNjXJMLahc3mqVQJcgSTDxFxhETVlfk9uGc38=
+golang.org/x/crypto v0.0.0-20220315160706-3147a52a75dd/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=

modules/ssh/ssh.go

@@ -317,64 +317,7 @@ func Listen(host string, port int, ciphers, keyExchanges, macs []string) {
 		}
 	}
 
-	// Workaround slightly broken behaviour in x/crypto/ssh/handshake.go:458-463
-	//
-	// Fundamentally the issue here is that HostKeyAlgos make the incorrect assumption
-	// that the PublicKey().Type() matches the signature algorithm.
-	//
-	// Therefore we need to add duplicates for the RSA with different signing algorithms.
-	signers := make([]ssh.Signer, 0, len(srv.HostSigners))
-	for _, signer := range srv.HostSigners {
-		if signer.PublicKey().Type() == "ssh-rsa" {
-			signers = append(signers,
-				&wrapSigner{
-					Signer:    signer,
-					algorithm: gossh.SigAlgoRSASHA2512,
-				},
-				&wrapSigner{
-					Signer:    signer,
-					algorithm: gossh.SigAlgoRSASHA2256,
-				},
-			)
-		}
-		signers = append(signers, signer)
-	}
-	srv.HostSigners = signers
-
 	go listen(&srv)
-
-}
-
-// wrapSigner wraps a signer and overrides its public key type with the provided algorithm
-type wrapSigner struct {
-	ssh.Signer
-	algorithm string
-}
-
-// PublicKey returns an associated PublicKey instance.
-func (s *wrapSigner) PublicKey() gossh.PublicKey {
-	return &wrapPublicKey{
-		PublicKey: s.Signer.PublicKey(),
-		algorithm: s.algorithm,
-	}
-}
-
-// Sign returns raw signature for the given data. This method
-// will apply the hash specified for the keytype to the data using
-// the algorithm assigned for this key
-func (s *wrapSigner) Sign(rand io.Reader, data []byte) (*gossh.Signature, error) {
-	return s.Signer.(gossh.AlgorithmSigner).SignWithAlgorithm(rand, data, s.algorithm)
-}
-
-// wrapPublicKey wraps a PublicKey and overrides its type
-type wrapPublicKey struct {
-	gossh.PublicKey
-	algorithm string
-}
-
-// Type returns the algorithm
-func (k *wrapPublicKey) Type() string {
-	return k.algorithm
 }
 
 // GenKeyPair make a pair of public and private keys for SSH access.