cert

Documentation

Overview

Package cert is a copy of client-go's util/cert package from k8s 1.13. In k8s 1.14, the cert utilities were moved into kubeadm package and are no longer available via any importable library. This is used by the admission controller to generate a self signed certificate in the operator.

Index

• Constants
• func CanReadCertAndKey(certPath, keyPath string) (bool, error)
• func CertsFromFile(file string) ([]*x509.Certificate, error)
• func EncodeCertPEM(cert *x509.Certificate) []byte
• func EncodePrivateKeyPEM(key *rsa.PrivateKey) []byte
• func EncodePublicKeyPEM(key *rsa.PublicKey) ([]byte, error)
• func GenerateSelfSignedCertKey(host string, alternateIPs []net.IP, alternateDNS []string) ([]byte, []byte, error)
• func GenerateSelfSignedCertKeyWithFixtures(host string, alternateIPs []net.IP, alternateDNS []string, ...) ([]byte, []byte, error)
• func LoadOrGenerateKeyFile(keyPath string) (data []byte, wasGenerated bool, err error)
• func MakeCSR(privateKey interface{}, subject *pkix.Name, dnsSANs []string, ipSANs []net.IP) (csr []byte, err error)
• func MakeCSRFromTemplate(privateKey interface{}, template *x509.CertificateRequest) ([]byte, error)
• func MakeEllipticPrivateKeyPEM() ([]byte, error)
• func MarshalPrivateKeyToPEM(privateKey crypto.PrivateKey) ([]byte, error)
• func NewPool(filename string) (*x509.CertPool, error)
• func NewPrivateKey() (*rsa.PrivateKey, error)
• func NewSelfSignedCACert(cfg Config, key crypto.Signer) (*x509.Certificate, error)
• func NewSignedCert(cfg Config, key crypto.Signer, caCert *x509.Certificate, caKey crypto.Signer) (*x509.Certificate, error)
• func ParseCertsPEM(pemCerts []byte) ([]*x509.Certificate, error)
• func ParsePrivateKeyPEM(keyData []byte) (interface{}, error)
• func ParsePublicKeysPEM(keyData []byte) ([]interface{}, error)
• func PrivateKeyFromFile(file string) (interface{}, error)
• func PublicKeysFromFile(file string) ([]interface{}, error)
• func WriteCert(certPath string, data []byte) error
• func WriteKey(keyPath string, data []byte) error
• type AltNames
• type Config

Constants

const (
	// ECPrivateKeyBlockType is a possible value for pem.Block.Type.
	ECPrivateKeyBlockType = "EC PRIVATE KEY"
	// RSAPrivateKeyBlockType is a possible value for pem.Block.Type.
	RSAPrivateKeyBlockType = "RSA PRIVATE KEY"
	// PrivateKeyBlockType is a possible value for pem.Block.Type.
	PrivateKeyBlockType = "PRIVATE KEY"
	// PublicKeyBlockType is a possible value for pem.Block.Type.
	PublicKeyBlockType = "PUBLIC KEY"
	// CertificateBlockType is a possible value for pem.Block.Type.
	CertificateBlockType = "CERTIFICATE"
	// CertificateRequestBlockType is a possible value for pem.Block.Type.
	CertificateRequestBlockType = "CERTIFICATE REQUEST"
)

Functions

func CanReadCertAndKey

func CanReadCertAndKey(certPath, keyPath string) (bool, error)

CanReadCertAndKey returns true if the certificate and key files already exists, otherwise returns false. If lost one of cert and key, returns error.

func CertsFromFile

func CertsFromFile(file string) ([]*x509.Certificate, error)

CertsFromFile returns the x509.Certificates contained in the given PEM-encoded file. Returns an error if the file could not be read, a certificate could not be parsed, or if the file does not contain any certificates

func EncodeCertPEM

func EncodeCertPEM(cert *x509.Certificate) []byte

EncodeCertPEM returns PEM-endcoded certificate data

func EncodePrivateKeyPEM

func EncodePrivateKeyPEM(key *rsa.PrivateKey) []byte

EncodePrivateKeyPEM returns PEM-encoded private key data

func EncodePublicKeyPEM

func EncodePublicKeyPEM(key *rsa.PublicKey) ([]byte, error)

EncodePublicKeyPEM returns PEM-encoded public data

func GenerateSelfSignedCertKey

func GenerateSelfSignedCertKey(host string, alternateIPs []net.IP, alternateDNS []string) ([]byte, []byte, error)

GenerateSelfSignedCertKey creates a self-signed certificate and key for the given host. Host may be an IP or a DNS name You may also specify additional subject alt names (either ip or dns names) for the certificate.

func GenerateSelfSignedCertKeyWithFixtures

func GenerateSelfSignedCertKeyWithFixtures(host string, alternateIPs []net.IP, alternateDNS []string, fixtureDirectory string) ([]byte, []byte, error)

GenerateSelfSignedCertKeyWithFixtures creates a self-signed certificate and key for the given host. Host may be an IP or a DNS name. You may also specify additional subject alt names (either ip or dns names) for the certificate.

If fixtureDirectory is non-empty, it is a directory path which can contain pre-generated certs. The format is: <host>_<ip>-<ip>_<alternateDNS>-<alternateDNS>.crt <host>_<ip>-<ip>_<alternateDNS>-<alternateDNS>.key Certs/keys not existing in that directory are created.

func LoadOrGenerateKeyFile

func LoadOrGenerateKeyFile(keyPath string) (data []byte, wasGenerated bool, err error)

LoadOrGenerateKeyFile looks for a key in the file at the given path. If it can't find one, it will generate a new key and store it there.

func MakeCSR

func MakeCSR(privateKey interface{}, subject *pkix.Name, dnsSANs []string, ipSANs []net.IP) (csr []byte, err error)

MakeCSR generates a PEM-encoded CSR using the supplied private key, subject, and SANs. All key types that are implemented via crypto.Signer are supported (This includes *rsa.PrivateKey and *ecdsa.PrivateKey.)

func MakeCSRFromTemplate

func MakeCSRFromTemplate(privateKey interface{}, template *x509.CertificateRequest) ([]byte, error)

MakeCSRFromTemplate generates a PEM-encoded CSR using the supplied private key and certificate request as a template. All key types that are implemented via crypto.Signer are supported (This includes *rsa.PrivateKey and *ecdsa.PrivateKey.)

func MakeEllipticPrivateKeyPEM

func MakeEllipticPrivateKeyPEM() ([]byte, error)

MakeEllipticPrivateKeyPEM creates an ECDSA private key

func MarshalPrivateKeyToPEM

func MarshalPrivateKeyToPEM(privateKey crypto.PrivateKey) ([]byte, error)

MarshalPrivateKeyToPEM converts a known private key type of RSA or ECDSA to a PEM encoded block or returns an error.

func NewPool

func NewPool(filename string) (*x509.CertPool, error)

NewPool returns an x509.CertPool containing the certificates in the given PEM-encoded file. Returns an error if the file could not be read, a certificate could not be parsed, or if the file does not contain any certificates

func NewPrivateKey

func NewPrivateKey() (*rsa.PrivateKey, error)

NewPrivateKey creates an RSA private key

func NewSelfSignedCACert

func NewSelfSignedCACert(cfg Config, key crypto.Signer) (*x509.Certificate, error)

NewSelfSignedCACert creates a CA certificate

func NewSignedCert

func NewSignedCert(cfg Config, key crypto.Signer, caCert *x509.Certificate, caKey crypto.Signer) (*x509.Certificate, error)

NewSignedCert creates a signed certificate using the given CA certificate and key

func ParseCertsPEM

func ParseCertsPEM(pemCerts []byte) ([]*x509.Certificate, error)

ParseCertsPEM returns the x509.Certificates contained in the given PEM-encoded byte array Returns an error if a certificate could not be parsed, or if the data does not contain any certificates

func ParsePrivateKeyPEM

func ParsePrivateKeyPEM(keyData []byte) (interface{}, error)

ParsePrivateKeyPEM returns a private key parsed from a PEM block in the supplied data. Recognizes PEM blocks for "EC PRIVATE KEY", "RSA PRIVATE KEY", or "PRIVATE KEY"

func ParsePublicKeysPEM

func ParsePublicKeysPEM(keyData []byte) ([]interface{}, error)

ParsePublicKeysPEM is a helper function for reading an array of rsa.PublicKey or ecdsa.PublicKey from a PEM-encoded byte array. Reads public keys from both public and private key files.

func PrivateKeyFromFile

func PrivateKeyFromFile(file string) (interface{}, error)

PrivateKeyFromFile returns the private key in rsa.PrivateKey or ecdsa.PrivateKey format from a given PEM-encoded file. Returns an error if the file could not be read or if the private key could not be parsed.

func PublicKeysFromFile

func PublicKeysFromFile(file string) ([]interface{}, error)

PublicKeysFromFile returns the public keys in rsa.PublicKey or ecdsa.PublicKey format from a given PEM-encoded file. Reads public keys from both public and private key files.

func WriteCert

func WriteCert(certPath string, data []byte) error

WriteCert writes the pem-encoded certificate data to certPath. The certificate file will be created with file mode 0644. If the certificate file already exists, it will be overwritten. The parent directory of the certPath will be created as needed with file mode 0755.

func WriteKey

func WriteKey(keyPath string, data []byte) error

WriteKey writes the pem-encoded key data to keyPath. The key file will be created with file mode 0600. If the key file already exists, it will be overwritten. The parent directory of the keyPath will be created as needed with file mode 0755.

Types

type AltNames

type AltNames struct {
	DNSNames []string
	IPs      []net.IP
}

AltNames contains the domain names and IP addresses that will be added to the API Server's x509 certificate SubAltNames field. The values will be passed directly to the x509.Certificate object.

type Config

type Config struct {
	CommonName   string
	Organization []string
	AltNames     AltNames
	Usages       []x509.ExtKeyUsage
}

Config contains the basic fields required for creating a certificate