x509util

package
v1.1.4 Latest Latest
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Published: Oct 18, 2022 License: Apache-2.0 Imports: 25 Imported by: 159

Documentation

Overview

Package x509util includes utility code for working with X.509 certificates from the x509 package.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func CRLToString added in v1.0.5

func CRLToString(crl *x509.CertificateList) string

CRLToString generates a string describing the given certificate revocation list. The output roughly resembles that from openssl crl -text.

func CertificateFromPEM

func CertificateFromPEM(pemBytes []byte) (*x509.Certificate, error)

CertificateFromPEM takes a certificate in PEM format and returns the corresponding x509.Certificate object.

func CertificateToString

func CertificateToString(cert *x509.Certificate) string

CertificateToString generates a string describing the given certificate. The output roughly resembles that from openssl x509 -text.

func CertificatesFromPEM added in v1.0.13

func CertificatesFromPEM(pemBytes []byte) ([]*x509.Certificate, error)

CertificatesFromPEM parses one or more certificates from the given PEM data. The PEM certificates must be concatenated. This function can be used for parsing PEM-formatted certificate chains, but does not verify that the resulting chain is a valid certificate chain.

func ExtractSCT added in v1.0.13

func ExtractSCT(sctData *x509.SerializedSCT) (*ct.SignedCertificateTimestamp, error)

ExtractSCT deserializes an SCT from a TLS-encoded SCT.

func Fuzz

func Fuzz(data []byte) int

Fuzz is a go-fuzz (https://github.com/dvyukov/go-fuzz) entrypoint for fuzzing the parsing of X509 certificates.

func GeneralNamesToString added in v1.0.5

func GeneralNamesToString(gname *x509.GeneralNames) string

GeneralNamesToString creates a string description of an x509.GeneralNames object.

func GetIssuer added in v1.0.12

func GetIssuer(cert *x509.Certificate, client *http.Client) (*x509.Certificate, error)

GetIssuer attempts to retrieve the issuer for a certificate, by examining the cert's Authority Information Access extension (if present) for the issuer's URL and retrieving from there.

func MarshalSCTsIntoSCTList added in v1.1.0

func MarshalSCTsIntoSCTList(scts []*ct.SignedCertificateTimestamp) (*x509.SignedCertificateTimestampList, error)

MarshalSCTsIntoSCTList serializes SCTs into SCT list.

func NameToString

func NameToString(name pkix.Name) string

NameToString creates a string description of a pkix.Name object.

func OIDForStandardExtension added in v1.0.5

func OIDForStandardExtension(oid asn1.ObjectIdentifier) bool

OIDForStandardExtension indicates whether oid identifies a standard extension. Standard extensions are listed in RFC 5280 (and other RFCs).

func OIDInExtensions added in v1.0.5

func OIDInExtensions(oid asn1.ObjectIdentifier, extensions []pkix.Extension) (int, bool)

OIDInExtensions checks whether the extension identified by oid is present in extensions and returns how many times it occurs together with an indication of whether any of them are marked critical.

func OtherNameToString added in v1.0.5

func OtherNameToString(other x509.OtherName) string

OtherNameToString creates a string description of an x509.OtherName object.

func ParseSCTsFromCertificate added in v1.0.13

func ParseSCTsFromCertificate(certBytes []byte) ([]*ct.SignedCertificateTimestamp, error)

ParseSCTsFromCertificate parses any SCTs that are embedded in the certificate provided. The certificate bytes provided can be either DER or PEM, provided the PEM data starts with the PEM block marker (i.e. has no leading text).

func ParseSCTsFromSCTList added in v1.0.13

func ParseSCTsFromSCTList(sctList *x509.SignedCertificateTimestampList) ([]*ct.SignedCertificateTimestamp, error)

ParseSCTsFromSCTList parses each of the SCTs contained within an SCT list.

func ReadFileOrURL added in v1.0.12

func ReadFileOrURL(target string, client *http.Client) ([]byte, error)

ReadFileOrURL returns the data from a target which may be either a filename or an HTTP(S) URL.

func ReadPossiblePEMFile added in v1.0.5

func ReadPossiblePEMFile(filename, blockname string) ([][]byte, error)

ReadPossiblePEMFile loads data from a file which may be in DER format or may be in PEM format (with the given blockname).

func ReadPossiblePEMURL added in v1.0.5

func ReadPossiblePEMURL(target, blockname string) ([][]byte, error)

ReadPossiblePEMURL attempts to determine if the given target is a local file or a URL, and return the file contents regardless. It also copes with either PEM or DER format data.

func RevocationReasonToString added in v1.0.6

func RevocationReasonToString(reason x509.RevocationReasonCode) string

RevocationReasonToString generates a string describing a revocation reason code.

Types

type PEMCertPool added in v1.1.3

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

PEMCertPool is a wrapper / extension to x509.CertPool. It allows us to access the raw certs, which we need to serve get-roots request and has stricter handling on loading certs into the pool. CertPool ignores errors if at least one cert loads correctly but PEMCertPool requires all certs to load.

func NewPEMCertPool added in v1.1.3

func NewPEMCertPool() *PEMCertPool

NewPEMCertPool creates a new, empty, instance of PEMCertPool.

func (*PEMCertPool) AddCert added in v1.1.3

func (p *PEMCertPool) AddCert(cert *x509.Certificate)

AddCert adds a certificate to a pool. Uses fingerprint to weed out duplicates. cert must not be nil.

func (*PEMCertPool) AppendCertsFromPEM added in v1.1.3

func (p *PEMCertPool) AppendCertsFromPEM(pemCerts []byte) (ok bool)

AppendCertsFromPEM adds certs to the pool from a byte slice assumed to contain PEM encoded data. Skips over non certificate blocks in the data. Returns true if all certificates in the data were parsed and added to the pool successfully and at least one certificate was found.

func (*PEMCertPool) AppendCertsFromPEMFile added in v1.1.3

func (p *PEMCertPool) AppendCertsFromPEMFile(pemFile string) error

AppendCertsFromPEMFile adds certs from a file that contains concatenated PEM data.

func (*PEMCertPool) CertPool added in v1.1.3

func (p *PEMCertPool) CertPool() *x509.CertPool

CertPool returns the underlying CertPool.

func (*PEMCertPool) Included added in v1.1.3

func (p *PEMCertPool) Included(cert *x509.Certificate) bool

Included indicates whether the given cert is included in the pool.

func (*PEMCertPool) RawCertificates added in v1.1.3

func (p *PEMCertPool) RawCertificates() []*x509.Certificate

RawCertificates returns a list of the raw bytes of certificates that are in this pool

func (*PEMCertPool) Subjects added in v1.1.3

func (p *PEMCertPool) Subjects() (res [][]byte)

Subjects returns a list of the DER-encoded subjects of all of the certificates in the pool.

Directories

Path Synopsis
certcheck is a utility to show and check the contents of certificates.
certcheck is a utility to show and check the contents of certificates.
crlcheck is a utility to show and check the contents of certificate revocation lists (CRLs).
crlcheck is a utility to show and check the contents of certificate revocation lists (CRLs).

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