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Package ca

v0.0.0-...-1a11905
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The latest major version is .

Published: Aug 25, 2020 | License: Apache-2.0 | Module: bitbucket.org/vinothkumarj/brandingdeb/certificates

Index

Variables

var DisableIdentity = false

DisableIdentity is a global variable to disable the identity.

var UserAgent = "step-http-client/1.0"

UserAgent will set the User-Agent header in the client requests.

func BootstrapClient

func BootstrapClient(ctx context.Context, token string, options ...TLSOption) (*http.Client, error)

BootstrapClient is a helper function that using the given bootstrap token return an http.Client configured with a Transport prepared to do TLS connections using the client certificate returned by the certificate authority. By default the server will kick off a routine that will renew the certificate after 2/3rd of the certificate's lifetime has expired.

Usage:

// Default example with certificate rotation.
client, err := ca.BootstrapClient(ctx.Background(), token)

// Example canceling automatic certificate rotation.
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
client, err := ca.BootstrapClient(ctx, token)
if err != nil {
  return err
}
resp, err := client.Get("https://internal.smallstep.com")

func BootstrapListener

func BootstrapListener(ctx context.Context, token string, inner net.Listener, options ...TLSOption) (net.Listener, error)

BootstrapListener is a helper function that using the given token returns a TLS listener which accepts connections from an inner listener and wraps each connection with Server.

Without any extra option the server will be configured for mTLS, it will require and verify clients certificates, but options can be used to drop this requirement, the most common will be only verify the certs if given with ca.VerifyClientCertIfGiven(), or add extra CAs with ca.AddClientCA(*x509.Certificate).

Usage:

inner, err := net.Listen("tcp", ":443")
if err != nil {
  return nil
}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
lis, err := ca.BootstrapListener(ctx, token, inner)
if err != nil {
    return err
}
srv := grpc.NewServer()
... // register services
srv.Serve(lis)

func BootstrapServer

func BootstrapServer(ctx context.Context, token string, base *http.Server, options ...TLSOption) (*http.Server, error)

BootstrapServer is a helper function that using the given token returns the given http.Server configured with a TLS certificate signed by the Certificate Authority. By default the server will kick off a routine that will renew the certificate after 2/3rd of the certificate's lifetime has expired.

Without any extra option the server will be configured for mTLS, it will require and verify clients certificates, but options can be used to drop this requirement, the most common will be only verify the certs if given with ca.VerifyClientCertIfGiven(), or add extra CAs with ca.AddClientCA(*x509.Certificate).

Usage:

// Default example with certificate rotation.
srv, err := ca.BootstrapServer(context.Background(), token, &http.Server{
    Addr: ":443",
    Handler: handler,
})

// Example canceling automatic certificate rotation.
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
srv, err := ca.BootstrapServer(ctx, token, &http.Server{
    Addr: ":443",
    Handler: handler,
})
if err != nil {
    return err
}
srv.ListenAndServeTLS("", "")

func Certificate

func Certificate(sign *api.SignResponse) (*x509.Certificate, error)

Certificate returns the server or client certificate from the sign response.

func CreateCertificateRequest

func CreateCertificateRequest(commonName string, sans ...string) (*api.CertificateRequest, crypto.PrivateKey, error)

CreateCertificateRequest creates a new CSR with the given common name and SANs. If no san is provided the commonName will set also a SAN.

func CreateIdentityRequest

func CreateIdentityRequest(commonName string, sans ...string) (*api.CertificateRequest, crypto.PrivateKey, error)

CreateIdentityRequest returns a new CSR to create the identity. If an identity was already present it reuses the private key.

func CreateSignRequest

func CreateSignRequest(ott string) (*api.SignRequest, crypto.PrivateKey, error)

CreateSignRequest is a helper function that given an x509 OTT returns a simple but secure sign request as well as the private key used.

func IntermediateCertificate

func IntermediateCertificate(sign *api.SignResponse) (*x509.Certificate, error)

IntermediateCertificate returns the CA intermediate certificate from the sign response.

func LoadDefaultIdentity

func LoadDefaultIdentity() (*identity.Identity, error)

LoadDefaultIdentity is a wrapper for identity.LoadDefaultIdentity.

func RootCertificate

func RootCertificate(sign *api.SignResponse) (*x509.Certificate, error)

RootCertificate returns the root certificate from the sign response.

func StopHandler

func StopHandler(servers ...Stopper)

StopHandler watches SIGINT, SIGTERM on a list of servers implementing the Stopper interface, and when one of those signals is caught we'll run Stop (SIGINT, SIGTERM) on all servers.

func StopReloaderHandler

func StopReloaderHandler(servers ...StopReloader)

StopReloaderHandler watches SIGINT, SIGTERM and SIGHUP on a list of servers implementing the StopReloader interface, and when one of those signals is caught we'll run Stop (SIGINT, SIGTERM) or Reload (SIGHUP) on all servers.

func TLSCertificate

func TLSCertificate(sign *api.SignResponse, pk crypto.PrivateKey) (*tls.Certificate, error)

TLSCertificate creates a new TLS certificate from the sign response and the private key used.

func WithRenewBefore

func WithRenewBefore(b time.Duration) func(r *TLSRenewer) error

WithRenewBefore modifies a tlsRenewer by setting the renewBefore attribute.

func WithRenewJitter

func WithRenewJitter(j time.Duration) func(r *TLSRenewer) error

WithRenewJitter modifies a tlsRenewer by setting the renewJitter attribute.

func WriteDefaultIdentity

func WriteDefaultIdentity(certChain []api.Certificate, key crypto.PrivateKey) error

WriteDefaultIdentity is a wrapper for identity.WriteDefaultIdentity.

type ACMEClient

type ACMEClient struct {
	Key *jose.JSONWebKey
	// contains filtered or unexported fields
}

ACMEClient implements an HTTP client to an ACME API.

func NewACMEClient

func NewACMEClient(endpoint string, contact []string, opts ...ClientOption) (*ACMEClient, error)

NewACMEClient initializes a new ACMEClient.

func (*ACMEClient) FinalizeOrder

func (c *ACMEClient) FinalizeOrder(url string, csr *x509.CertificateRequest) error

FinalizeOrder makes a finalize request to the ACME api.

func (*ACMEClient) GetAccountOrders

func (c *ACMEClient) GetAccountOrders() ([]string, error)

GetAccountOrders retrieves the orders belonging to the given account.

func (*ACMEClient) GetAuthz

func (c *ACMEClient) GetAuthz(url string) (*acme.Authz, error)

GetAuthz returns the Authz at the given path.

func (*ACMEClient) GetCertificate

func (c *ACMEClient) GetCertificate(url string) (*x509.Certificate, []*x509.Certificate, error)

GetCertificate retrieves the certificate along with all intermediates.

func (*ACMEClient) GetChallenge

func (c *ACMEClient) GetChallenge(url string) (*acme.Challenge, error)

GetChallenge returns the Challenge at the given path. With the validate parameter set to True this method will attempt to validate the challenge before returning it.

func (*ACMEClient) GetDirectory

func (c *ACMEClient) GetDirectory() (*acme.Directory, error)

GetDirectory makes a directory request to the ACME api and returns an ACME directory object.

func (*ACMEClient) GetNonce

func (c *ACMEClient) GetNonce() (string, error)

GetNonce makes a nonce request to the ACME api and returns an ACME directory object.

func (*ACMEClient) GetOrder

func (c *ACMEClient) GetOrder(url string) (*acme.Order, error)

GetOrder returns the Order at the given path.

func (*ACMEClient) NewOrder

func (c *ACMEClient) NewOrder(payload []byte) (*acme.Order, error)

NewOrder creates and returns the information for a new ACME order.

func (*ACMEClient) ValidateChallenge

func (c *ACMEClient) ValidateChallenge(url string) error

ValidateChallenge returns the Challenge at the given path. With the validate parameter set to True this method will attempt to validate the challenge before returning it.

type CA

type CA struct {
	// contains filtered or unexported fields
}

CA is the type used to build the complete certificate authority. It builds the HTTP server, set ups the middlewares and the HTTP handlers.

func New

func New(config *authority.Config, opts ...Option) (*CA, error)

New creates and initializes the CA with the given configuration and options.

func (*CA) Init

func (ca *CA) Init(config *authority.Config) (*CA, error)

Init initializes the CA with the given configuration.

func (*CA) Reload

func (ca *CA) Reload() error

Reload reloads the configuration of the CA and calls to the server Reload method.

func (*CA) Run

func (ca *CA) Run() error

Run starts the CA calling to the server ListenAndServe method.

func (*CA) Stop

func (ca *CA) Stop() error

Stop stops the CA calling to the server Shutdown method.

type Client

type Client struct {
	// contains filtered or unexported fields
}

Client implements an HTTP client for the CA server.

func Bootstrap

func Bootstrap(token string) (*Client, error)

Bootstrap is a helper function that initializes a client with the configuration in the bootstrap token.

func NewClient

func NewClient(endpoint string, opts ...ClientOption) (*Client, error)

NewClient creates a new Client with the given endpoint and options.

func (*Client) Federation

func (c *Client) Federation() (*api.FederationResponse, error)

Federation performs the get federation request to the CA and returns the api.FederationResponse struct.

func (*Client) GetClientTLSConfig

func (c *Client) GetClientTLSConfig(ctx context.Context, sign *api.SignResponse, pk crypto.PrivateKey, options ...TLSOption) (*tls.Config, error)

GetClientTLSConfig returns a tls.Config for client use configured with the sign certificate, and a new certificate pool with the sign root certificate. The client certificate will automatically rotate before expiring.

func (*Client) GetRootCAs

func (c *Client) GetRootCAs() *x509.CertPool

GetRootCAs returns the RootCAs certificate pool from the configured transport.

func (*Client) GetServerTLSConfig

func (c *Client) GetServerTLSConfig(ctx context.Context, sign *api.SignResponse, pk crypto.PrivateKey, options ...TLSOption) (*tls.Config, error)

GetServerTLSConfig returns a tls.Config for server use configured with the sign certificate, and a new certificate pool with the sign root certificate. The returned tls.Config will only verify the client certificate if provided. The server certificate will automatically rotate before expiring.

func (*Client) Health

func (c *Client) Health() (*api.HealthResponse, error)

Health performs the health request to the CA and returns the api.HealthResponse struct.

func (*Client) ProvisionerKey

func (c *Client) ProvisionerKey(kid string) (*api.ProvisionerKeyResponse, error)

ProvisionerKey performs the request to the CA to get the encrypted key for the given provisioner kid and returns the api.ProvisionerKeyResponse struct with the encrypted key.

func (*Client) Provisioners

func (c *Client) Provisioners(opts ...ProvisionerOption) (*api.ProvisionersResponse, error)

Provisioners performs the provisioners request to the CA and returns the api.ProvisionersResponse struct with a map of provisioners.

ProvisionerOption WithProvisionerCursor and WithProvisionLimit can be used to paginate the provisioners.

func (*Client) Renew

func (c *Client) Renew(tr http.RoundTripper) (*api.SignResponse, error)

Renew performs the renew request to the CA and returns the api.SignResponse struct.

func (*Client) Revoke

func (c *Client) Revoke(req *api.RevokeRequest, tr http.RoundTripper) (*api.RevokeResponse, error)

Revoke performs the revoke request to the CA and returns the api.RevokeResponse struct.

func (*Client) Root

func (c *Client) Root(sha256Sum string) (*api.RootResponse, error)

Root performs the root request to the CA with the given SHA256 and returns the api.RootResponse struct. It uses an insecure client, but it checks the resulting root certificate with the given SHA256, returning an error if they do not match.

func (*Client) RootFingerprint

func (c *Client) RootFingerprint() (string, error)

RootFingerprint is a helper method that returns the current root fingerprint. It does an health connection and gets the fingerprint from the TLS verified chains.

func (*Client) Roots

func (c *Client) Roots() (*api.RootsResponse, error)

Roots performs the get roots request to the CA and returns the api.RootsResponse struct.

func (*Client) SSHBastion

func (c *Client) SSHBastion(req *api.SSHBastionRequest) (*api.SSHBastionResponse, error)

SSHBastion performs the POST /ssh/bastion request to the CA.

func (*Client) SSHCheckHost

func (c *Client) SSHCheckHost(principal string, token string) (*api.SSHCheckPrincipalResponse, error)

SSHCheckHost performs the POST /ssh/check-host request to the CA with the given principal.

func (*Client) SSHConfig

func (c *Client) SSHConfig(req *api.SSHConfigRequest) (*api.SSHConfigResponse, error)

SSHConfig performs the POST /ssh/config request to the CA to get the ssh configuration templates.

func (*Client) SSHFederation

func (c *Client) SSHFederation() (*api.SSHRootsResponse, error)

SSHFederation performs the get /ssh/federation request to the CA and returns the api.SSHRootsResponse struct.

func (*Client) SSHGetHosts

func (c *Client) SSHGetHosts() (*api.SSHGetHostsResponse, error)

SSHGetHosts performs the GET /ssh/get-hosts request to the CA.

func (*Client) SSHRekey

func (c *Client) SSHRekey(req *api.SSHRekeyRequest) (*api.SSHRekeyResponse, error)

SSHRekey performs the POST /ssh/rekey request to the CA and returns the api.SSHRekeyResponse struct.

func (*Client) SSHRenew

func (c *Client) SSHRenew(req *api.SSHRenewRequest) (*api.SSHRenewResponse, error)

SSHRenew performs the POST /ssh/renew request to the CA and returns the api.SSHRenewResponse struct.

func (*Client) SSHRevoke

func (c *Client) SSHRevoke(req *api.SSHRevokeRequest) (*api.SSHRevokeResponse, error)

SSHRevoke performs the POST /ssh/revoke request to the CA and returns the api.SSHRevokeResponse struct.

func (*Client) SSHRoots

func (c *Client) SSHRoots() (*api.SSHRootsResponse, error)

SSHRoots performs the GET /ssh/roots request to the CA and returns the api.SSHRootsResponse struct.

func (*Client) SSHSign

func (c *Client) SSHSign(req *api.SSHSignRequest) (*api.SSHSignResponse, error)

SSHSign performs the POST /ssh/sign request to the CA and returns the api.SSHSignResponse struct.

func (*Client) SetTransport

func (c *Client) SetTransport(tr http.RoundTripper)

SetTransport updates the transport of the internal HTTP client.

func (*Client) Sign

func (c *Client) Sign(req *api.SignRequest) (*api.SignResponse, error)

Sign performs the sign request to the CA and returns the api.SignResponse struct.

func (*Client) Transport

func (c *Client) Transport(ctx context.Context, sign *api.SignResponse, pk crypto.PrivateKey, options ...TLSOption) (*http.Transport, error)

Transport returns an http.Transport configured to use the client certificate from the sign response.

func (*Client) Version

func (c *Client) Version() (*api.VersionResponse, error)

Version performs the version request to the CA and returns the api.VersionResponse struct.

type ClientOption

type ClientOption func(o *clientOptions) error

ClientOption is the type of options passed to the Client constructor.

func WithCABundle

func WithCABundle(bundle []byte) ClientOption

WithCABundle will create the transport using the given root certificates. It will fail if a previous option to create the transport has been configured.

func WithCertificate

func WithCertificate(crt tls.Certificate) ClientOption

WithCertificate will set the given certificate as the TLS client certificate in the client.

func WithRetryFunc

func WithRetryFunc(fn RetryFunc) ClientOption

WithRetryFunc defines a method used to retry a request.

func WithRootFile

func WithRootFile(filename string) ClientOption

WithRootFile will create the transport using the given root certificate. It will fail if a previous option to create the transport has been configured.

func WithRootSHA256

func WithRootSHA256(sum string) ClientOption

WithRootSHA256 will create the transport using an insecure client to retrieve the root certificate using its fingerprint. It will fail if a previous option to create the transport has been configured.

func WithTransport

func WithTransport(tr http.RoundTripper) ClientOption

WithTransport adds a custom transport to the Client. It will fail if a previous option to create the transport has been configured.

type Option

type Option func(o *options)

Option is the type of options passed to the CA constructor.

func WithConfigFile

func WithConfigFile(name string) Option

WithConfigFile sets the given name as the configuration file name in the CA options.

func WithDatabase

func WithDatabase(db db.AuthDB) Option

WithDatabase sets the given authority database to the CA options.

func WithPassword

func WithPassword(password []byte) Option

WithPassword sets the given password as the configured password in the CA options.

type Provisioner

type Provisioner struct {
	*Client
	// contains filtered or unexported fields
}

Provisioner is an authorized entity that can sign tokens necessary for signature requests.

func NewProvisioner

func NewProvisioner(name, kid, caURL string, password []byte, opts ...ClientOption) (*Provisioner, error)

NewProvisioner loads and decrypts key material from the CA for the named provisioner. The key identified by `kid` will be used if specified. If `kid` is the empty string we'll use the first key for the named provisioner that decrypts using `password`.

func (*Provisioner) Kid

func (p *Provisioner) Kid() string

Kid returns the provisioners key ID.

func (*Provisioner) Name

func (p *Provisioner) Name() string

Name returns the provisioner's name.

func (*Provisioner) SSHToken

func (p *Provisioner) SSHToken(certType, keyID string, principals []string) (string, error)

SSHToken generates a SSH token.

func (*Provisioner) SetFingerprint

func (p *Provisioner) SetFingerprint(sum string)

SetFingerprint overwrites the default fingerprint used.

func (*Provisioner) Token

func (p *Provisioner) Token(subject string, sans ...string) (string, error)

Token generates a bootstrap token for a subject.

type ProvisionerOption

type ProvisionerOption func(o *provisionerOptions) error

ProvisionerOption is the type of options passed to the Provisioner method.

func WithProvisionerCursor

func WithProvisionerCursor(cursor string) ProvisionerOption

WithProvisionerCursor will request the provisioners starting with the given cursor.

func WithProvisionerLimit

func WithProvisionerLimit(limit int) ProvisionerOption

WithProvisionerLimit will request the given number of provisioners.

type RenewFunc

type RenewFunc func() (*tls.Certificate, error)

RenewFunc defines the type of the functions used to get a new tls certificate.

type RetryFunc

type RetryFunc func(code int) bool

RetryFunc defines the method used to retry a request. If it returns true, the request will be retried once.

type StopReloader

type StopReloader interface {
	Stop() error
	Reload() error
}

StopReloader is the interface that external commands can implement to stop the server and reload the configuration while running.

type Stopper

type Stopper interface {
	Stop() error
}

Stopper is the interface that external commands can implement to stop the server.

type TLSOption

type TLSOption func(ctx *TLSOptionCtx) error

TLSOption defines the type of a function that modifies a tls.Config.

func AddClientCA

func AddClientCA(cert *x509.Certificate) TLSOption

AddClientCA adds to the tls.Config ClientCAs the given certificate. ClientCAs defines the set of root certificate authorities that servers use if required to verify a client certificate by the policy in ClientAuth.

func AddFederationToCAs

func AddFederationToCAs() TLSOption

AddFederationToCAs does a federation request and adds the resulting certs to the tls.Config RootCAs and ClientCAs. Combines the functionality of AddFederationToRootCAs and AddFederationToClientCAs.

func AddFederationToClientCAs

func AddFederationToClientCAs() TLSOption

AddFederationToClientCAs does a federation request and adds to the tls.Config ClientCAs all the certificates in the response. ClientCAs defines the set of root certificate authorities that servers use if required to verify a client certificate by the policy in ClientAuth.

func AddFederationToRootCAs

func AddFederationToRootCAs() TLSOption

AddFederationToRootCAs does a federation request and adds to the tls.Config RootCAs all the certificates in the response. RootCAs defines the set of root certificate authorities that clients use when verifying server certificates.

func AddRootCA

func AddRootCA(cert *x509.Certificate) TLSOption

AddRootCA adds to the tls.Config RootCAs the given certificate. RootCAs defines the set of root certificate authorities that clients use when verifying server certificates.

func AddRootsToCAs

func AddRootsToCAs() TLSOption

AddRootsToCAs does a roots request and adds the resulting certs to the tls.Config RootCAs and ClientCAs. Combines the functionality of AddRootsToRootCAs and AddRootsToClientCAs.

func AddRootsToClientCAs

func AddRootsToClientCAs() TLSOption

AddRootsToClientCAs does a roots request and adds to the tls.Config ClientCAs all the certificates in the response. ClientCAs defines the set of root certificate authorities that servers use if required to verify a client certificate by the policy in ClientAuth.

BootstrapServer method includes this option by default.

func AddRootsToRootCAs

func AddRootsToRootCAs() TLSOption

AddRootsToRootCAs does a roots request and adds to the tls.Config RootCAs all the certificates in the response. RootCAs defines the set of root certificate authorities that clients use when verifying server certificates.

BootstrapServer and BootstrapClient methods include this option by default.

func RequireAndVerifyClientCert

func RequireAndVerifyClientCert() TLSOption

RequireAndVerifyClientCert is a tls.Config option used on servers to enforce a valid TLS client certificate. This is the default option for mTLS servers.

func VerifyClientCertIfGiven

func VerifyClientCertIfGiven() TLSOption

VerifyClientCertIfGiven is a tls.Config option used on on servers to validate a TLS client certificate if it is provided. It does not requires a certificate.

type TLSOptionCtx

type TLSOptionCtx struct {
	Client      *Client
	Config      *tls.Config
	Sign        *api.SignResponse
	OnRenewFunc []TLSOption
	// contains filtered or unexported fields
}

TLSOptionCtx is the context modified on TLSOption methods.

type TLSRenewer

type TLSRenewer struct {
	sync.RWMutex
	RenewCertificate RenewFunc
	// contains filtered or unexported fields
}

TLSRenewer automatically renews a tls certificate using a RenewFunc.

func NewTLSRenewer

func NewTLSRenewer(cert *tls.Certificate, fn RenewFunc, opts ...tlsRenewerOptions) (*TLSRenewer, error)

NewTLSRenewer creates a TLSRenewer for the given cert. It will use the given RenewFunc to get a new certificate when required.

func (*TLSRenewer) GetCertificate

func (r *TLSRenewer) GetCertificate(clientHello *tls.ClientHelloInfo) (*tls.Certificate, error)

GetCertificate returns the current server certificate.

This method is set in the tls.Config GetCertificate property.

func (*TLSRenewer) GetCertificateForCA

func (r *TLSRenewer) GetCertificateForCA(clientHello *tls.ClientHelloInfo) (*tls.Certificate, error)

GetCertificateForCA returns the current server certificate. It can only be used if the renew function creates the new certificate and do not uses a TLS request. It's intended to be use by the certificate authority server.

This method is set in the tls.Config GetCertificate property.

func (*TLSRenewer) GetClientCertificate

func (r *TLSRenewer) GetClientCertificate(*tls.CertificateRequestInfo) (*tls.Certificate, error)

GetClientCertificate returns the current client certificate.

This method is set in the tls.Config GetClientCertificate property.

func (*TLSRenewer) Run

func (r *TLSRenewer) Run()

Run starts the certificate renewer for the given certificate.

func (*TLSRenewer) RunContext

func (r *TLSRenewer) RunContext(ctx context.Context)

RunContext starts the certificate renewer for the given certificate.

func (*TLSRenewer) Stop

func (r *TLSRenewer) Stop() bool

Stop prevents the renew timer from firing.

Package Files

Documentation was rendered with GOOS=linux and GOARCH=amd64.

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