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crypto/tls: re-enable RSA-PSS in TLS 1.2 again

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TLS 1.3, which requires RSA-PSS, is now enabled without a GODEBUG
opt-out, and with the introduction of
Certificate.SupportedSignatureAlgorithms (#28660) there is a
programmatic way to avoid RSA-PSS (disable TLS 1.3 with MaxVersion and
use that field to specify only PKCS#1 v1.5 SignatureSchemes).

This effectively reverts 0b3a57b5374bba3fdf88258e2be4c8be65e6a5de,
although following CL 205061 all of the signing-side logic is
conveniently centralized in signatureSchemesForCertificate.

Fixes #32425

Change-Id: I7c9a8893bb5d518d86eae7db82612b9b2cd257d7
Reviewed-on: https://go-review.googlesource.com/c/go/+/205063
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>
This commit is contained in:
Filippo Valsorda 2019-11-03 21:28:47 -05:00
parent 555e9b864b
commit 6bb85fe4e7
28 changed files with 1264 additions and 1244 deletions
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2
auth_test.go
View file

@ -39,7 +39,7 @@ func TestSignatureSelection(t *testing.T) {
}{
{rsaCert, []SignatureScheme{PKCS1WithSHA1, PKCS1WithSHA256}, VersionTLS12, PKCS1WithSHA1, signaturePKCS1v15, crypto.SHA1},
{rsaCert, []SignatureScheme{PKCS1WithSHA512, PKCS1WithSHA1}, VersionTLS12, PKCS1WithSHA512, signaturePKCS1v15, crypto.SHA512},
{rsaCert, []SignatureScheme{PSSWithSHA256, PKCS1WithSHA256}, VersionTLS12, PKCS1WithSHA256, signaturePKCS1v15, crypto.SHA256},
{rsaCert, []SignatureScheme{PSSWithSHA256, PKCS1WithSHA256}, VersionTLS12, PSSWithSHA256, signatureRSAPSS, crypto.SHA256},
{pkcs1Cert, []SignatureScheme{PSSWithSHA256, PKCS1WithSHA256}, VersionTLS12, PKCS1WithSHA256, signaturePKCS1v15, crypto.SHA256},
{rsaCert, []SignatureScheme{PSSWithSHA384, PKCS1WithSHA1}, VersionTLS13, PSSWithSHA384, signatureRSAPSS, crypto.SHA384},
{ecdsaCert, []SignatureScheme{ECDSAWithSHA1}, VersionTLS12, ECDSAWithSHA1, signatureECDSA, crypto.SHA1},