Previously, an ECDSA crypto.Signer would have been expected to return a signature in RFC7518 format, which violates crypto.Signer's interface contract. Fixes golang/go#35829 Change-Id: Id0cc2d9296cfb9f89925ab9ac02e12d68eec734b Reviewed-on: https://go-review.googlesource.com/c/crypto/+/209537 Run-TryBot: Filippo Valsorda <filippo@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Filippo Valsorda <filippo@golang.org>