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Added flag for user configurable cipher suites

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Configuration of list of cipher suites allows a user to disable use
of weak ciphers or continue to support them for legacy usage if they
so choose.

List of available cipher suites at:
https://golang.org/pkg/crypto/tls/#pkg-constants

Default cipher suites have been updated to:
- TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
- TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
- TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305
- TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305
- TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
- TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
- TLS_AES_128_GCM_SHA256
- TLS_CHACHA20_POLY1305_SHA256
- TLS_AES_256_GCM_SHA384

MinimumTLS has also been updated to include TLS 1.3 as an option
and now defaults to TLS 1.2 since 1.0 and 1.1 have been deprecated.

Signed-off-by: David Luu <david@davidluu.info>
This commit is contained in:
David Luu 2021-02-18 15:31:23 -06:00
parent 22c074842e
commit 1e625d0076
6 changed files with 412 additions and 41 deletions
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22
configuration/configuration_test.go
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@ -80,11 +80,12 @@ var configStruct = Configuration{
RelativeURLs bool `yaml:"relativeurls,omitempty"`
DrainTimeout time.Duration `yaml:"draintimeout,omitempty"`
TLS struct {
Certificate string `yaml:"certificate,omitempty"`
Key string `yaml:"key,omitempty"`
ClientCAs []string `yaml:"clientcas,omitempty"`
MinimumTLS string `yaml:"minimumtls,omitempty"`
LetsEncrypt struct {
Certificate string `yaml:"certificate,omitempty"`
Key string `yaml:"key,omitempty"`
ClientCAs []string `yaml:"clientcas,omitempty"`
MinimumTLS string `yaml:"minimumtls,omitempty"`
CipherSuites []string `yaml:"ciphersuites,omitempty"`
LetsEncrypt struct {
CacheFile string `yaml:"cachefile,omitempty"`
Email string `yaml:"email,omitempty"`
Hosts []string `yaml:"hosts,omitempty"`
@ -103,11 +104,12 @@ var configStruct = Configuration{
} `yaml:"http2,omitempty"`
}{
TLS: struct {
Certificate string `yaml:"certificate,omitempty"`
Key string `yaml:"key,omitempty"`
ClientCAs []string `yaml:"clientcas,omitempty"`
MinimumTLS string `yaml:"minimumtls,omitempty"`
LetsEncrypt struct {
Certificate string `yaml:"certificate,omitempty"`
Key string `yaml:"key,omitempty"`
ClientCAs []string `yaml:"clientcas,omitempty"`
MinimumTLS string `yaml:"minimumtls,omitempty"`
CipherSuites []string `yaml:"ciphersuites,omitempty"`
LetsEncrypt struct {
CacheFile string `yaml:"cachefile,omitempty"`
Email string `yaml:"email,omitempty"`
Hosts []string `yaml:"hosts,omitempty"`