CloudKMS keys signs data using an specific signature algorithm, in RSA keys,
this can be PKCS#1 RSA or RSA-PSS, if the later is used, x509.CreateCertificate
will fail unless the template SignatureCertificate is properly set.
On contrast, AWSKMS RSA keys, are just RSA keys, and can sign with PKCS#1 or
RSA-PSS schemes, so right now the way to enforce one or the other is to used
templates.
Go 1.17 introduces a change in the net/url package disallowing the
use of semicolon (;) in URL queries. We used url.ParseQuery to
decode the opaque string that is semicolon separated. This change
replaces the semicolon with ampersands before decoding it.
A server without TLS was added to serve the SCEP endpoints. According
to the RFC, SCEP has to be served via HTTP. The `sscep` client, for
example, will stop any URL that does not start with `http://` from
being used, so serving SCEP seems to be the right way to do it.
This commit adds a second server for which no TLS configuration is
configured. A distinct field in the configuration, `insecureAddress`
was added to specify the address for the insecure server.
The SCEP endpoints will also still be served via HTTPS. Some clients
may be able to work with that.
This commit also improves how the crypto.Decrypter interface is
handled for the different types of KMSes supported by step. The
apiv1.Decrypter interface was added. Currently only SoftKMS
implements this interface, providing a crypto.Decrypter required
for SCEP operations.
This adds a new KMS, SSHAgentKMS, which is a KMS to provide signing keys
for issuing ssh certificates signed by a key managed by a ssh-agent. It
uses the golang.org/x/crypto package to get a native Go implementation
to talk to a ssh-agent.
This was primarly written to be able to use gpg-agent to provide the
keys stored in a YubiKeys openpgp interface, but can be used for other
setups like proxying a ssh-agent over network.
That way the signing key for ssh certificates can be kept in a
"sign-only" hsm.
This code was written for my employer Intinor AB, but for simplicity
sake gifted to me to contribute upstream.
Signed-off-by: Anton Lundin <glance@acc.umu.se>
