ssh: prefer sha256 based RSA key algorithms

drakkan · gopherbot · commit 3f8f0645c287 · 2023-07-14T16:27:34.000Z
sha256 is more optimized than sha512 in Go and is secure enough so prefer sha256 over sha512. Change-Id: I3fcf7457791e3ef4539e97049aa905dcd293499d Reviewed-on: https://go-review.googlesource.com/c/crypto/+/507556 Reviewed-by: Filippo Valsorda <filippo@golang.org> Reviewed-by: Cherry Mui <cherryyz@google.com> Run-TryBot: Filippo Valsorda <filippo@golang.org> Auto-Submit: Filippo Valsorda <filippo@golang.org> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Roland Shoemaker <roland@golang.org>
diff --git a/ssh/common.go b/ssh/common.go
@@ -70,12 +70,12 @@ var preferredKexAlgos = []string{
 // supportedHostKeyAlgos specifies the supported host-key algorithms (i.e. methods
 // of authenticating servers) in preference order.
 var supportedHostKeyAlgos = []string{
-	CertAlgoRSASHA512v01, CertAlgoRSASHA256v01,
+	CertAlgoRSASHA256v01, CertAlgoRSASHA512v01,
 	CertAlgoRSAv01, CertAlgoDSAv01, CertAlgoECDSA256v01,
 	CertAlgoECDSA384v01, CertAlgoECDSA521v01, CertAlgoED25519v01,
 
 	KeyAlgoECDSA256, KeyAlgoECDSA384, KeyAlgoECDSA521,
-	KeyAlgoRSASHA512, KeyAlgoRSASHA256,
+	KeyAlgoRSASHA256, KeyAlgoRSASHA512,
 	KeyAlgoRSA, KeyAlgoDSA,
 
 	KeyAlgoED25519,
