package helpers

import "github.com/cloudflare/cfssl/helpers"

Package helpers implements utility functionality common to many CFSSL packages.

Index

Constants 

const OneDay = 24 * time.Hour

OneDay is a time.Duration representing a day's worth of seconds. 

const OneYear = 8760 * time.Hour

OneYear is a time.Duration representing a year's worth of seconds.

Variables 

var Apr2015 = InclusiveDate(2015, time.April, 01)

Apr2015 is the April 2015 CAB Forum deadline for when CAs must stop issuing certificates valid for more than 39 months. 

var DelegationExtension = pkix.Extension{
	Id:       DelegationUsage,
	Critical: false,
	Value:    []byte{0x05, 0x00},
}

DelegationExtension 

var DelegationUsage = asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 44363, 44}

DelegationUsage is the OID for the DelegationUseage extensions 

var Jul2012 = InclusiveDate(2012, time.July, 01)

Jul2012 is the July 2012 CAB Forum deadline for when CAs must stop issuing certificates valid for more than 5 years.

Functions

func CreateTLSConfig 

func CreateTLSConfig(remoteCAs *x509.CertPool, cert *tls.Certificate) *tls.Config

CreateTLSConfig creates a tls.Config object from certs and roots

func DeserializeSCTList 

func DeserializeSCTList(serializedSCTList []byte) ([]ct.SignedCertificateTimestamp, error)

DeserializeSCTList deserializes a list of SCTs.

func EncodeCertificatePEM 

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

EncodeCertificatePEM encodes a single x509 certificates to PEM

func EncodeCertificatesPEM 

func EncodeCertificatesPEM(certs []*x509.Certificate) []byte

EncodeCertificatesPEM encodes a number of x509 certificates to PEM

func ExpiryTime 

func ExpiryTime(chain []*x509.Certificate) (notAfter time.Time)

ExpiryTime returns the time when the certificate chain is expired.

func GetKeyDERFromPEM 

func GetKeyDERFromPEM(in []byte, password []byte) ([]byte, error)

GetKeyDERFromPEM parses a PEM-encoded private key and returns DER-format key bytes.

func HashAlgoString 

func HashAlgoString(alg x509.SignatureAlgorithm) string

HashAlgoString returns the hash algorithm name contained in the signature method.

func InclusiveDate 

func InclusiveDate(year int, month time.Month, day int) time.Time

InclusiveDate returns the time.Time representation of a date - 1 nanosecond. This allows time.After to be used inclusively.

func KeyLength 

func KeyLength(key interface{}) int

KeyLength returns the bit size of ECDSA, RSA or Ed25519 PublicKey

func LoadClientCertificate 

func LoadClientCertificate(certFile string, keyFile string) (*tls.Certificate, error)

LoadClientCertificate load key/certificate from pem files

func LoadPEMCertPool 

func LoadPEMCertPool(certsFile string) (*x509.CertPool, error)

LoadPEMCertPool loads a pool of PEM certificates from file.

func MonthsValid 

func MonthsValid(c *x509.Certificate) int

MonthsValid returns the number of months for which a certificate is valid.

func PEMToCertPool 

func PEMToCertPool(pemCerts []byte) (*x509.CertPool, error)

PEMToCertPool concerts PEM certificates to a CertPool.

func ParseCSR 

func ParseCSR(in []byte) (csr *x509.CertificateRequest, rest []byte, err error)

ParseCSR parses a PEM- or DER-encoded PKCS #10 certificate signing request.

func ParseCSRDER 

func ParseCSRDER(csrDER []byte) (*x509.CertificateRequest, error)

ParseCSRDER parses a PEM-encoded certificate signing request. It does not check the signature. This is useful for dumping data from a CSR locally.

func ParseCSRPEM 

func ParseCSRPEM(csrPEM []byte) (*x509.CertificateRequest, error)

ParseCSRPEM parses a PEM-encoded certificate signing request. It does not check the signature. This is useful for dumping data from a CSR locally.

func ParseCertificatePEM 

func ParseCertificatePEM(certPEM []byte) (*x509.Certificate, error)

ParseCertificatePEM parses and returns a PEM-encoded certificate, can handle PEM encoded PKCS #7 structures.

func ParseCertificatesDER 

func ParseCertificatesDER(certsDER []byte, password string) (certs []*x509.Certificate, key crypto.Signer, err error)

ParseCertificatesDER parses a DER encoding of a certificate object and possibly private key, either PKCS #7, PKCS #12, or raw x509.

func ParseCertificatesPEM 

func ParseCertificatesPEM(certsPEM []byte) ([]*x509.Certificate, error)

ParseCertificatesPEM parses a sequence of PEM-encoded certificate and returns them, can handle PEM encoded PKCS #7 structures.

func ParseOneCertificateFromPEM 

func ParseOneCertificateFromPEM(certsPEM []byte) ([]*x509.Certificate, []byte, error)

ParseOneCertificateFromPEM attempts to parse one PEM encoded certificate object, either a raw x509 certificate or a PKCS #7 structure possibly containing multiple certificates, from the top of certsPEM, which itself may contain multiple PEM encoded certificate objects.

func ParsePrivateKeyPEM 

func ParsePrivateKeyPEM(keyPEM []byte) (key crypto.Signer, err error)

ParsePrivateKeyPEM parses and returns a PEM-encoded private key. The private key may be either an unencrypted PKCS#8, PKCS#1, or elliptic private key.

func ParsePrivateKeyPEMWithPassword 

func ParsePrivateKeyPEMWithPassword(keyPEM []byte, password []byte) (key crypto.Signer, err error)

ParsePrivateKeyPEMWithPassword parses and returns a PEM-encoded private key. The private key may be a potentially encrypted PKCS#8, PKCS#1, or elliptic private key.

func ParseSelfSignedCertificatePEM 

func ParseSelfSignedCertificatePEM(certPEM []byte) (*x509.Certificate, error)

ParseSelfSignedCertificatePEM parses a PEM-encoded certificate and check if it is self-signed.

func ReadBytes 

func ReadBytes(valFile string) ([]byte, error)

ReadBytes reads a []byte either from a file or an environment variable. If valFile has a prefix of 'env:', the []byte is read from the environment using the subsequent name. If the prefix is 'file:' the []byte is read from the subsequent file. If no prefix is provided, valFile is assumed to be a file path.

func SCTListFromOCSPResponse 

func SCTListFromOCSPResponse(response *ocsp.Response) ([]ct.SignedCertificateTimestamp, error)

SCTListFromOCSPResponse extracts the SCTList from an ocsp.Response, returning an empty list if the SCT extension was not found or could not be unmarshalled.

func SerializeSCTList 

func SerializeSCTList(sctList []ct.SignedCertificateTimestamp) ([]byte, error)

SerializeSCTList serializes a list of SCTs.

func SignatureString 

func SignatureString(alg x509.SignatureAlgorithm) string

SignatureString returns the TLS signature string corresponding to an X509 signature algorithm.

func SignerAlgo 

func SignerAlgo(priv crypto.Signer) x509.SignatureAlgorithm

SignerAlgo returns an X.509 signature algorithm from a crypto.Signer.

func StringTLSVersion 

func StringTLSVersion(version string) uint16

StringTLSVersion returns underlying enum values from human names for TLS versions, defaults to current golang default of TLS 1.0

func ValidExpiry 

func ValidExpiry(c *x509.Certificate) bool

ValidExpiry determines if a certificate is valid for an acceptable length of time per the CA/Browser Forum baseline requirements. See https://cabforum.org/wp-content/uploads/CAB-Forum-BR-1.3.0.pdf

Source Files

helpers.go

Directories

PathSynopsis
helpers/derhelpersPackage derhelpers implements common functionality on DER encoded data
helpers/testsuite
Version
v1.6.5 (latest)
Published
Mar 5, 2024
Platform
linux/amd64
Imports
25 packages
Last checked
6 days ago –

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