75 lines
2.5 KiB
Go
75 lines
2.5 KiB
Go
// Copyright 2022 the Pinniped contributors. All Rights Reserved.
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// SPDX-License-Identifier: Apache-2.0
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// The configurations here override the usual ptls.Secure, ptls.Default, and ptls.DefaultLDAP
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// configs when Pinniped is built in fips-only mode.
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// All of these are the same because FIPs is already so limited.
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//go:build fips_strict
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// +build fips_strict
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package ptls
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import (
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"crypto/tls"
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"crypto/x509"
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"runtime"
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"C" // explicitly import cgo so that runtime/cgo gets linked into the kube-cert-agent
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_ "crypto/tls/fipsonly" // restricts all TLS configuration to FIPS-approved settings.
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"k8s.io/apiserver/pkg/server/options"
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"k8s.io/klog/v2"
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)
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// Always use TLS 1.2 for FIPs
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const secureServingOptionsMinTLSVersion = "VersionTLS12"
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const SecureTLSConfigMinTLSVersion = tls.VersionTLS12
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func init() {
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// this init runs before we have parsed our config to determine our log level
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// thus we must use a log statement that will always print instead of conditionally print
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// for plog, that is only error and warning logs, neither of which seem appropriate here
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// therefore, just use klog directly with no V level requirement
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klog.InfoS("using boring crypto in fips only mode", "go version", runtime.Version())
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}
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func Default(rootCAs *x509.CertPool) *tls.Config {
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return &tls.Config{
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// goboring requires TLS 1.2 and only TLS 1.2
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MinVersion: SecureTLSConfigMinTLSVersion,
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MaxVersion: SecureTLSConfigMinTLSVersion,
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// enable HTTP2 for go's 1.7 HTTP Server
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// setting this explicitly is only required in very specific circumstances
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// it is simpler to just set it here than to try and determine if we need to
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NextProtos: []string{"h2", "http/1.1"},
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// optional root CAs, nil means use the host's root CA set
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RootCAs: rootCAs,
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// This is all of the fips-approved ciphers.
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// The list is hard-coded for convenience of testing.
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// This is kept in sync with the boring crypto compiler via TestFIPSCipherSuites.
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CipherSuites: []uint16{
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tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
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tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
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tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
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tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
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tls.TLS_RSA_WITH_AES_128_GCM_SHA256,
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tls.TLS_RSA_WITH_AES_256_GCM_SHA384,
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},
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}
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}
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func Secure(rootCAs *x509.CertPool) *tls.Config {
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return Default(rootCAs)
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}
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func DefaultLDAP(rootCAs *x509.CertPool) *tls.Config {
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return Default(rootCAs)
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}
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func secureServing(opts *options.SecureServingOptionsWithLoopback) {
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defaultServing(opts)
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}
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