util

package
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 Go to latest Published: Mar 6, 2019 License: Apache-2.0 Imports: 19 Imported by: 0

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Constants

This section is empty.

Variables

This section is empty.

Functions

func BuildSANExtension 

func BuildSANExtension(identites []Identity) (*pkix.Extension, error)

BuildSANExtension builds a `pkix.Extension` of type "Subject Alternative Name" based on the given identities.

func BuildSubjectAltNameExtension 

func BuildSubjectAltNameExtension(hosts string) (*pkix.Extension, error)

BuildSubjectAltNameExtension builds the SAN extension for the certificate.

func DualUseCommonName 

func DualUseCommonName(host string) (string, error)

DualUseCommonName extracts a valid CommonName from a comma-delimited host string for dual-use certificates.

func ExtractIDs 

func ExtractIDs(exts []pkix.Extension) ([]string, error)

ExtractIDs first finds the SAN extension from the given extension set, then extract identities from the SAN extension.

func ExtractSANExtension 

func ExtractSANExtension(exts []pkix.Extension) *pkix.Extension

ExtractSANExtension extracts the "Subject Alternative Name" externsion from the given PKIX extension set.

func GenCSR 

func GenCSR(options CertOptions) ([]byte, []byte, error)

GenCSR generates a X.509 certificate sign request and private key with the given options.

func GenCSRTemplate 

func GenCSRTemplate(options CertOptions) (*x509.CertificateRequest, error)

GenCSRTemplate generates a certificateRequest template with the given options.

func GenCertFromCSR 

func GenCertFromCSR(csr *x509.CertificateRequest, signingCert *x509.Certificate, publicKey interface{},
	signingKey crypto.PrivateKey, subjectIDs []string, ttl time.Duration, isCA bool) (cert []byte, err error)

GenCertFromCSR generates a X.509 certificate with the given CSR.

func GenCertKeyFromOptions 

func GenCertKeyFromOptions(options CertOptions) (pemCert []byte, pemKey []byte, err error)

GenCertKeyFromOptions generates a X.509 certificate and a private key with the given options.

func GetRSAKeySize 

func GetRSAKeySize(privKey crypto.PrivateKey) (int, error)

GetRSAKeySize returns the size if it is RSA key, otherwise it returns an error.

func LoadSignerCredsFromFiles 

func LoadSignerCredsFromFiles(signerCertFile string, signerPrivFile string) (*x509.Certificate, crypto.PrivateKey, error)

LoadSignerCredsFromFiles loads the signer cert&key from the given files. 

signerCertFile: cert file name
signerPrivFile: private key file name

func ParsePemEncodedCSR 

func ParsePemEncodedCSR(csrBytes []byte) (*x509.CertificateRequest, error)

ParsePemEncodedCSR constructs a `x509.CertificateRequest` object using the given PEM-encoded certificate signing request.

func ParsePemEncodedCertificate 

func ParsePemEncodedCertificate(certBytes []byte) (*x509.Certificate, error)

ParsePemEncodedCertificate constructs a `x509.Certificate` object using the given a PEM-encoded certificate.

func ParsePemEncodedKey 

func ParsePemEncodedKey(keyBytes []byte) (crypto.PrivateKey, error)

ParsePemEncodedKey takes a PEM-encoded key and parsed the bytes into a `crypto.PrivateKey`.

func Verify 

func Verify(certBytes, privKeyBytes, certChainBytes, rootCertBytes []byte) error

Verify that the cert chain, root cert and key/cert match.

func VerifyCertificate 

func VerifyCertificate(privPem []byte, certChainPem []byte, rootCertPem []byte, expectedFields *VerifyFields) error

VerifyCertificate verifies a given PEM encoded certificate by - building one or more chains from the certificate to a root certificate; - checking fields are set as expected.

Types

type CertOptions 

type CertOptions struct {
	// Comma-separated hostnames and IPs to generate a certificate for.
	// This can also be set to the identity running the workload,
	// like kubernetes service account.
	Host string

	// The NotBefore field of the issued certificate.
	NotBefore time.Time

	// TTL of the certificate. NotAfter - NotBefore.
	TTL time.Duration

	// Signer certificate (PEM encoded).
	SignerCert *x509.Certificate

	// Signer private key (PEM encoded).
	SignerPriv crypto.PrivateKey

	// Organization for this certificate.
	Org string

	// Whether this certificate is used as signing cert for CA.
	IsCA bool

	// Whether this certificate is self-signed.
	IsSelfSigned bool

	// Whether this certificate is for a client.
	IsClient bool

	// Whether this certificate is for a server.
	IsServer bool

	// The size of RSA private key to be generated.
	RSAKeySize int

	// Whether this certificate is for dual-use clients (SAN+CN).
	IsDualUse bool
}

CertOptions contains options for generating a new certificate.

type Identity 

type Identity struct {
	Type  IdentityType
	Value []byte
}

Identity is an object holding both the encoded identifier bytes as well as the type of the identity.

func ExtractIDsFromSAN 

func ExtractIDsFromSAN(sanExt *pkix.Extension) ([]Identity, error)

ExtractIDsFromSAN takes a SAN extension and extracts the identities. The logic is mostly borrowed from https://github.com/golang/go/blob/master/src/crypto/x509/x509.go, with the addition of supporting extracting URIs.

type IdentityType 

type IdentityType int

IdentityType represents type of an identity. This is used to properly encode an identity into a SAN extension. 

const (
	// TypeDNS represents a DNS name.
	TypeDNS IdentityType = iota
	// TypeIP represents an IP address.
	TypeIP
	// TypeURI represents a universal resource identifier.
	TypeURI
)

type KeyCertBundle 

type KeyCertBundle interface {
	// GetAllPem returns all key/cert PEMs in KeyCertBundle together. Getting all values together avoids inconsistency.
	GetAllPem() (certBytes, privKeyBytes, certChainBytes, rootCertBytes []byte)

	// GetAll returns all key/cert in KeyCertBundle together. Getting all values together avoids inconsistency.
	GetAll() (cert *x509.Certificate, privKey *crypto.PrivateKey, certChainBytes, rootCertBytes []byte)

	// GetCertChainPem returns the certificate chain PEM.
	GetCertChainPem() []byte

	// GetRootCertPem returns the root certificate PEM.
	GetRootCertPem() []byte

	// VerifyAndSetAll verifies the key/certs, and sets all key/certs in KeyCertBundle together.
	// Setting all values together avoids inconsistency.
	VerifyAndSetAll(certBytes, privKeyBytes, certChainBytes, rootCertBytes []byte) error

	// CertOptions returns the CertOptions for rotating the current key cert.
	CertOptions() (*CertOptions, error)
}

KeyCertBundle stores the cert, private key, cert chain and root cert for an entity. It is thread safe. TODO(myidpt): Remove this interface.

type KeyCertBundleImpl 

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

KeyCertBundleImpl implements the KeyCertBundle interface. The cert and privKey should be a public/private key pair. The cert should be verifiable from the rootCert through the certChain. cert and priveKey are pointers to the cert/key parsed from certBytes/privKeyBytes.

func NewKeyCertBundleWithRootCertFromFile 

func NewKeyCertBundleWithRootCertFromFile(rootCertFile string) (*KeyCertBundleImpl, error)

NewKeyCertBundleWithRootCertFromFile returns a new KeyCertBundle with the root cert without verification.

func NewVerifiedKeyCertBundleFromFile 

func NewVerifiedKeyCertBundleFromFile(certFile, privKeyFile, certChainFile, rootCertFile string) (
	*KeyCertBundleImpl, error)

NewVerifiedKeyCertBundleFromFile returns a new KeyCertBundle, or error if if the provided certs failed the verification.

func NewVerifiedKeyCertBundleFromPem 

func NewVerifiedKeyCertBundleFromPem(certBytes, privKeyBytes, certChainBytes, rootCertBytes []byte) (
	*KeyCertBundleImpl, error)

NewVerifiedKeyCertBundleFromPem returns a new KeyCertBundle, or error if if the provided certs failed the verification.

func (*KeyCertBundleImpl) CertOptions 

func (b *KeyCertBundleImpl) CertOptions() (*CertOptions, error)

CertOptions returns the certificate config based on currently stored cert.

func (*KeyCertBundleImpl) GetAll 

func (b *KeyCertBundleImpl) GetAll() (cert *x509.Certificate, privKey *crypto.PrivateKey, certChainBytes,
	rootCertBytes []byte)

GetAll returns all key/cert in KeyCertBundle together. Getting all values together avoids inconsistency. NOTE: Callers should not modify the content of cert and privKey.

func (*KeyCertBundleImpl) GetAllPem 

func (b *KeyCertBundleImpl) GetAllPem() (certBytes, privKeyBytes, certChainBytes, rootCertBytes []byte)

GetAllPem returns all key/cert PEMs in KeyCertBundle together. Getting all values together avoids inconsistency.

func (*KeyCertBundleImpl) GetCertChainPem 

func (b *KeyCertBundleImpl) GetCertChainPem() []byte

GetCertChainPem returns the certificate chain PEM.

func (*KeyCertBundleImpl) GetRootCertPem 

func (b *KeyCertBundleImpl) GetRootCertPem() []byte

GetRootCertPem returns the root certificate PEM.

func (*KeyCertBundleImpl) VerifyAndSetAll 

func (b *KeyCertBundleImpl) VerifyAndSetAll(certBytes, privKeyBytes, certChainBytes, rootCertBytes []byte) error

VerifyAndSetAll verifies the key/certs, and sets all key/certs in KeyCertBundle together. Setting all values together avoids inconsistency.

type VerifyFields 

type VerifyFields struct {
	NotBefore   time.Time
	TTL         time.Duration // NotAfter - NotBefore
	ExtKeyUsage []x509.ExtKeyUsage
	KeyUsage    x509.KeyUsage
	IsCA        bool
	Org         string
	CommonName  string
	Host        string
}

VerifyFields contains the certificate fields to verify in the test.

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