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Diffstat (limited to 'gcc-4.8.1/libgo/go/crypto/x509/x509.go')
-rw-r--r--gcc-4.8.1/libgo/go/crypto/x509/x509.go1343
1 files changed, 0 insertions, 1343 deletions
diff --git a/gcc-4.8.1/libgo/go/crypto/x509/x509.go b/gcc-4.8.1/libgo/go/crypto/x509/x509.go
deleted file mode 100644
index 798321769..000000000
--- a/gcc-4.8.1/libgo/go/crypto/x509/x509.go
+++ /dev/null
@@ -1,1343 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package x509 parses X.509-encoded keys and certificates.
-package x509
-
-import (
- "bytes"
- "crypto"
- "crypto/dsa"
- "crypto/ecdsa"
- "crypto/elliptic"
- "crypto/rsa"
- "crypto/sha1"
- "crypto/x509/pkix"
- "encoding/asn1"
- "encoding/pem"
- "errors"
- "io"
- "math/big"
- "time"
-)
-
-// pkixPublicKey reflects a PKIX public key structure. See SubjectPublicKeyInfo
-// in RFC 3280.
-type pkixPublicKey struct {
- Algo pkix.AlgorithmIdentifier
- BitString asn1.BitString
-}
-
-// ParsePKIXPublicKey parses a DER encoded public key. These values are
-// typically found in PEM blocks with "BEGIN PUBLIC KEY".
-func ParsePKIXPublicKey(derBytes []byte) (pub interface{}, err error) {
- var pki publicKeyInfo
- if _, err = asn1.Unmarshal(derBytes, &pki); err != nil {
- return
- }
- algo := getPublicKeyAlgorithmFromOID(pki.Algorithm.Algorithm)
- if algo == UnknownPublicKeyAlgorithm {
- return nil, errors.New("ParsePKIXPublicKey: unknown public key algorithm")
- }
- return parsePublicKey(algo, &pki)
-}
-
-// MarshalPKIXPublicKey serialises a public key to DER-encoded PKIX format.
-func MarshalPKIXPublicKey(pub interface{}) ([]byte, error) {
- var pubBytes []byte
-
- switch pub := pub.(type) {
- case *rsa.PublicKey:
- pubBytes, _ = asn1.Marshal(rsaPublicKey{
- N: pub.N,
- E: pub.E,
- })
- default:
- return nil, errors.New("MarshalPKIXPublicKey: unknown public key type")
- }
-
- pkix := pkixPublicKey{
- Algo: pkix.AlgorithmIdentifier{
- Algorithm: []int{1, 2, 840, 113549, 1, 1, 1},
- // This is a NULL parameters value which is technically
- // superfluous, but most other code includes it and, by
- // doing this, we match their public key hashes.
- Parameters: asn1.RawValue{
- Tag: 5,
- },
- },
- BitString: asn1.BitString{
- Bytes: pubBytes,
- BitLength: 8 * len(pubBytes),
- },
- }
-
- ret, _ := asn1.Marshal(pkix)
- return ret, nil
-}
-
-// These structures reflect the ASN.1 structure of X.509 certificates.:
-
-type certificate struct {
- Raw asn1.RawContent
- TBSCertificate tbsCertificate
- SignatureAlgorithm pkix.AlgorithmIdentifier
- SignatureValue asn1.BitString
-}
-
-type tbsCertificate struct {
- Raw asn1.RawContent
- Version int `asn1:"optional,explicit,default:1,tag:0"`
- SerialNumber *big.Int
- SignatureAlgorithm pkix.AlgorithmIdentifier
- Issuer asn1.RawValue
- Validity validity
- Subject asn1.RawValue
- PublicKey publicKeyInfo
- UniqueId asn1.BitString `asn1:"optional,tag:1"`
- SubjectUniqueId asn1.BitString `asn1:"optional,tag:2"`
- Extensions []pkix.Extension `asn1:"optional,explicit,tag:3"`
-}
-
-type dsaAlgorithmParameters struct {
- P, Q, G *big.Int
-}
-
-type dsaSignature struct {
- R, S *big.Int
-}
-
-type ecdsaSignature dsaSignature
-
-type validity struct {
- NotBefore, NotAfter time.Time
-}
-
-type publicKeyInfo struct {
- Raw asn1.RawContent
- Algorithm pkix.AlgorithmIdentifier
- PublicKey asn1.BitString
-}
-
-// RFC 5280, 4.2.1.1
-type authKeyId struct {
- Id []byte `asn1:"optional,tag:0"`
-}
-
-type SignatureAlgorithm int
-
-const (
- UnknownSignatureAlgorithm SignatureAlgorithm = iota
- MD2WithRSA
- MD5WithRSA
- SHA1WithRSA
- SHA256WithRSA
- SHA384WithRSA
- SHA512WithRSA
- DSAWithSHA1
- DSAWithSHA256
- ECDSAWithSHA1
- ECDSAWithSHA256
- ECDSAWithSHA384
- ECDSAWithSHA512
-)
-
-type PublicKeyAlgorithm int
-
-const (
- UnknownPublicKeyAlgorithm PublicKeyAlgorithm = iota
- RSA
- DSA
- ECDSA
-)
-
-// OIDs for signature algorithms
-//
-// pkcs-1 OBJECT IDENTIFIER ::= {
-// iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) 1 }
-//
-//
-// RFC 3279 2.2.1 RSA Signature Algorithms
-//
-// md2WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 2 }
-//
-// md5WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 4 }
-//
-// sha-1WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 5 }
-//
-// dsaWithSha1 OBJECT IDENTIFIER ::= {
-// iso(1) member-body(2) us(840) x9-57(10040) x9cm(4) 3 }
-//
-// RFC 3279 2.2.3 ECDSA Signature Algorithm
-//
-// ecdsa-with-SHA1 OBJECT IDENTIFIER ::= {
-// iso(1) member-body(2) us(840) ansi-x962(10045)
-// signatures(4) ecdsa-with-SHA1(1)}
-//
-//
-// RFC 4055 5 PKCS #1 Version 1.5
-//
-// sha256WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 11 }
-//
-// sha384WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 12 }
-//
-// sha512WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 13 }
-//
-//
-// RFC 5758 3.1 DSA Signature Algorithms
-//
-// dsaWithSha256 OBJECT IDENTIFIER ::= {
-// joint-iso-ccitt(2) country(16) us(840) organization(1) gov(101)
-// csor(3) algorithms(4) id-dsa-with-sha2(3) 2}
-//
-// RFC 5758 3.2 ECDSA Signature Algorithm
-//
-// ecdsa-with-SHA256 OBJECT IDENTIFIER ::= { iso(1) member-body(2)
-// us(840) ansi-X9-62(10045) signatures(4) ecdsa-with-SHA2(3) 2 }
-//
-// ecdsa-with-SHA384 OBJECT IDENTIFIER ::= { iso(1) member-body(2)
-// us(840) ansi-X9-62(10045) signatures(4) ecdsa-with-SHA2(3) 3 }
-//
-// ecdsa-with-SHA512 OBJECT IDENTIFIER ::= { iso(1) member-body(2)
-// us(840) ansi-X9-62(10045) signatures(4) ecdsa-with-SHA2(3) 4 }
-
-var (
- oidSignatureMD2WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 2}
- oidSignatureMD5WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 4}
- oidSignatureSHA1WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 5}
- oidSignatureSHA256WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 11}
- oidSignatureSHA384WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 12}
- oidSignatureSHA512WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 13}
- oidSignatureDSAWithSHA1 = asn1.ObjectIdentifier{1, 2, 840, 10040, 4, 3}
- oidSignatureDSAWithSHA256 = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 4, 3, 2}
- oidSignatureECDSAWithSHA1 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 1}
- oidSignatureECDSAWithSHA256 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 2}
- oidSignatureECDSAWithSHA384 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 3}
- oidSignatureECDSAWithSHA512 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 4}
-)
-
-func getSignatureAlgorithmFromOID(oid asn1.ObjectIdentifier) SignatureAlgorithm {
- switch {
- case oid.Equal(oidSignatureMD2WithRSA):
- return MD2WithRSA
- case oid.Equal(oidSignatureMD5WithRSA):
- return MD5WithRSA
- case oid.Equal(oidSignatureSHA1WithRSA):
- return SHA1WithRSA
- case oid.Equal(oidSignatureSHA256WithRSA):
- return SHA256WithRSA
- case oid.Equal(oidSignatureSHA384WithRSA):
- return SHA384WithRSA
- case oid.Equal(oidSignatureSHA512WithRSA):
- return SHA512WithRSA
- case oid.Equal(oidSignatureDSAWithSHA1):
- return DSAWithSHA1
- case oid.Equal(oidSignatureDSAWithSHA256):
- return DSAWithSHA256
- case oid.Equal(oidSignatureECDSAWithSHA1):
- return ECDSAWithSHA1
- case oid.Equal(oidSignatureECDSAWithSHA256):
- return ECDSAWithSHA256
- case oid.Equal(oidSignatureECDSAWithSHA384):
- return ECDSAWithSHA384
- case oid.Equal(oidSignatureECDSAWithSHA512):
- return ECDSAWithSHA512
- }
- return UnknownSignatureAlgorithm
-}
-
-// RFC 3279, 2.3 Public Key Algorithms
-//
-// pkcs-1 OBJECT IDENTIFIER ::== { iso(1) member-body(2) us(840)
-// rsadsi(113549) pkcs(1) 1 }
-//
-// rsaEncryption OBJECT IDENTIFIER ::== { pkcs1-1 1 }
-//
-// id-dsa OBJECT IDENTIFIER ::== { iso(1) member-body(2) us(840)
-// x9-57(10040) x9cm(4) 1 }
-//
-// RFC 5480, 2.1.1 Unrestricted Algorithm Identifier and Parameters
-//
-// id-ecPublicKey OBJECT IDENTIFIER ::= {
-// iso(1) member-body(2) us(840) ansi-X9-62(10045) keyType(2) 1 }
-var (
- oidPublicKeyRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 1}
- oidPublicKeyDSA = asn1.ObjectIdentifier{1, 2, 840, 10040, 4, 1}
- oidPublicKeyECDSA = asn1.ObjectIdentifier{1, 2, 840, 10045, 2, 1}
-)
-
-func getPublicKeyAlgorithmFromOID(oid asn1.ObjectIdentifier) PublicKeyAlgorithm {
- switch {
- case oid.Equal(oidPublicKeyRSA):
- return RSA
- case oid.Equal(oidPublicKeyDSA):
- return DSA
- case oid.Equal(oidPublicKeyECDSA):
- return ECDSA
- }
- return UnknownPublicKeyAlgorithm
-}
-
-// RFC 5480, 2.1.1.1. Named Curve
-//
-// secp224r1 OBJECT IDENTIFIER ::= {
-// iso(1) identified-organization(3) certicom(132) curve(0) 33 }
-//
-// secp256r1 OBJECT IDENTIFIER ::= {
-// iso(1) member-body(2) us(840) ansi-X9-62(10045) curves(3)
-// prime(1) 7 }
-//
-// secp384r1 OBJECT IDENTIFIER ::= {
-// iso(1) identified-organization(3) certicom(132) curve(0) 34 }
-//
-// secp521r1 OBJECT IDENTIFIER ::= {
-// iso(1) identified-organization(3) certicom(132) curve(0) 35 }
-//
-// NB: secp256r1 is equivalent to prime256v1
-var (
- oidNamedCurveP224 = asn1.ObjectIdentifier{1, 3, 132, 0, 33}
- oidNamedCurveP256 = asn1.ObjectIdentifier{1, 2, 840, 10045, 3, 1, 7}
- oidNamedCurveP384 = asn1.ObjectIdentifier{1, 3, 132, 0, 34}
- oidNamedCurveP521 = asn1.ObjectIdentifier{1, 3, 132, 0, 35}
-)
-
-func namedCurveFromOID(oid asn1.ObjectIdentifier) elliptic.Curve {
- switch {
- case oid.Equal(oidNamedCurveP224):
- return elliptic.P224()
- case oid.Equal(oidNamedCurveP256):
- return elliptic.P256()
- case oid.Equal(oidNamedCurveP384):
- return elliptic.P384()
- case oid.Equal(oidNamedCurveP521):
- return elliptic.P521()
- }
- return nil
-}
-
-func oidFromNamedCurve(curve elliptic.Curve) (asn1.ObjectIdentifier, bool) {
- switch curve {
- case elliptic.P224():
- return oidNamedCurveP224, true
- case elliptic.P256():
- return oidNamedCurveP256, true
- case elliptic.P384():
- return oidNamedCurveP384, true
- case elliptic.P521():
- return oidNamedCurveP521, true
- }
-
- return nil, false
-}
-
-// KeyUsage represents the set of actions that are valid for a given key. It's
-// a bitmap of the KeyUsage* constants.
-type KeyUsage int
-
-const (
- KeyUsageDigitalSignature KeyUsage = 1 << iota
- KeyUsageContentCommitment
- KeyUsageKeyEncipherment
- KeyUsageDataEncipherment
- KeyUsageKeyAgreement
- KeyUsageCertSign
- KeyUsageCRLSign
- KeyUsageEncipherOnly
- KeyUsageDecipherOnly
-)
-
-// RFC 5280, 4.2.1.12 Extended Key Usage
-//
-// anyExtendedKeyUsage OBJECT IDENTIFIER ::= { id-ce-extKeyUsage 0 }
-//
-// id-kp OBJECT IDENTIFIER ::= { id-pkix 3 }
-//
-// id-kp-serverAuth OBJECT IDENTIFIER ::= { id-kp 1 }
-// id-kp-clientAuth OBJECT IDENTIFIER ::= { id-kp 2 }
-// id-kp-codeSigning OBJECT IDENTIFIER ::= { id-kp 3 }
-// id-kp-emailProtection OBJECT IDENTIFIER ::= { id-kp 4 }
-// id-kp-timeStamping OBJECT IDENTIFIER ::= { id-kp 8 }
-// id-kp-OCSPSigning OBJECT IDENTIFIER ::= { id-kp 9 }
-var (
- oidExtKeyUsageAny = asn1.ObjectIdentifier{2, 5, 29, 37, 0}
- oidExtKeyUsageServerAuth = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 1}
- oidExtKeyUsageClientAuth = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 2}
- oidExtKeyUsageCodeSigning = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 3}
- oidExtKeyUsageEmailProtection = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 4}
- oidExtKeyUsageIPSECEndSystem = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 5}
- oidExtKeyUsageIPSECTunnel = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 6}
- oidExtKeyUsageIPSECUser = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 7}
- oidExtKeyUsageTimeStamping = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 8}
- oidExtKeyUsageOCSPSigning = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 9}
-)
-
-// ExtKeyUsage represents an extended set of actions that are valid for a given key.
-// Each of the ExtKeyUsage* constants define a unique action.
-type ExtKeyUsage int
-
-const (
- ExtKeyUsageAny ExtKeyUsage = iota
- ExtKeyUsageServerAuth
- ExtKeyUsageClientAuth
- ExtKeyUsageCodeSigning
- ExtKeyUsageEmailProtection
- ExtKeyUsageIPSECEndSystem
- ExtKeyUsageIPSECTunnel
- ExtKeyUsageIPSECUser
- ExtKeyUsageTimeStamping
- ExtKeyUsageOCSPSigning
-)
-
-// extKeyUsageOIDs contains the mapping between an ExtKeyUsage and its OID.
-var extKeyUsageOIDs = []struct {
- extKeyUsage ExtKeyUsage
- oid asn1.ObjectIdentifier
-}{
- {ExtKeyUsageAny, oidExtKeyUsageAny},
- {ExtKeyUsageServerAuth, oidExtKeyUsageServerAuth},
- {ExtKeyUsageClientAuth, oidExtKeyUsageClientAuth},
- {ExtKeyUsageCodeSigning, oidExtKeyUsageCodeSigning},
- {ExtKeyUsageEmailProtection, oidExtKeyUsageEmailProtection},
- {ExtKeyUsageIPSECEndSystem, oidExtKeyUsageIPSECEndSystem},
- {ExtKeyUsageIPSECTunnel, oidExtKeyUsageIPSECTunnel},
- {ExtKeyUsageIPSECUser, oidExtKeyUsageIPSECUser},
- {ExtKeyUsageTimeStamping, oidExtKeyUsageTimeStamping},
- {ExtKeyUsageOCSPSigning, oidExtKeyUsageOCSPSigning},
-}
-
-func extKeyUsageFromOID(oid asn1.ObjectIdentifier) (eku ExtKeyUsage, ok bool) {
- for _, pair := range extKeyUsageOIDs {
- if oid.Equal(pair.oid) {
- return pair.extKeyUsage, true
- }
- }
- return
-}
-
-func oidFromExtKeyUsage(eku ExtKeyUsage) (oid asn1.ObjectIdentifier, ok bool) {
- for _, pair := range extKeyUsageOIDs {
- if eku == pair.extKeyUsage {
- return pair.oid, true
- }
- }
- return
-}
-
-// A Certificate represents an X.509 certificate.
-type Certificate struct {
- Raw []byte // Complete ASN.1 DER content (certificate, signature algorithm and signature).
- RawTBSCertificate []byte // Certificate part of raw ASN.1 DER content.
- RawSubjectPublicKeyInfo []byte // DER encoded SubjectPublicKeyInfo.
- RawSubject []byte // DER encoded Subject
- RawIssuer []byte // DER encoded Issuer
-
- Signature []byte
- SignatureAlgorithm SignatureAlgorithm
-
- PublicKeyAlgorithm PublicKeyAlgorithm
- PublicKey interface{}
-
- Version int
- SerialNumber *big.Int
- Issuer pkix.Name
- Subject pkix.Name
- NotBefore, NotAfter time.Time // Validity bounds.
- KeyUsage KeyUsage
-
- ExtKeyUsage []ExtKeyUsage // Sequence of extended key usages.
- UnknownExtKeyUsage []asn1.ObjectIdentifier // Encountered extended key usages unknown to this package.
-
- BasicConstraintsValid bool // if true then the next two fields are valid.
- IsCA bool
- MaxPathLen int
-
- SubjectKeyId []byte
- AuthorityKeyId []byte
-
- // Subject Alternate Name values
- DNSNames []string
- EmailAddresses []string
-
- // Name constraints
- PermittedDNSDomainsCritical bool // if true then the name constraints are marked critical.
- PermittedDNSDomains []string
-
- PolicyIdentifiers []asn1.ObjectIdentifier
-}
-
-// ErrUnsupportedAlgorithm results from attempting to perform an operation that
-// involves algorithms that are not currently implemented.
-var ErrUnsupportedAlgorithm = errors.New("crypto/x509: cannot verify signature: algorithm unimplemented")
-
-// ConstraintViolationError results when a requested usage is not permitted by
-// a certificate. For example: checking a signature when the public key isn't a
-// certificate signing key.
-type ConstraintViolationError struct{}
-
-func (ConstraintViolationError) Error() string {
- return "crypto/x509: invalid signature: parent certificate cannot sign this kind of certificate"
-}
-
-func (c *Certificate) Equal(other *Certificate) bool {
- return bytes.Equal(c.Raw, other.Raw)
-}
-
-// Entrust have a broken root certificate (CN=Entrust.net Certification
-// Authority (2048)) which isn't marked as a CA certificate and is thus invalid
-// according to PKIX.
-// We recognise this certificate by its SubjectPublicKeyInfo and exempt it
-// from the Basic Constraints requirement.
-// See http://www.entrust.net/knowledge-base/technote.cfm?tn=7869
-//
-// TODO(agl): remove this hack once their reissued root is sufficiently
-// widespread.
-var entrustBrokenSPKI = []byte{
- 0x30, 0x82, 0x01, 0x22, 0x30, 0x0d, 0x06, 0x09,
- 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01,
- 0x01, 0x05, 0x00, 0x03, 0x82, 0x01, 0x0f, 0x00,
- 0x30, 0x82, 0x01, 0x0a, 0x02, 0x82, 0x01, 0x01,
- 0x00, 0x97, 0xa3, 0x2d, 0x3c, 0x9e, 0xde, 0x05,
- 0xda, 0x13, 0xc2, 0x11, 0x8d, 0x9d, 0x8e, 0xe3,
- 0x7f, 0xc7, 0x4b, 0x7e, 0x5a, 0x9f, 0xb3, 0xff,
- 0x62, 0xab, 0x73, 0xc8, 0x28, 0x6b, 0xba, 0x10,
- 0x64, 0x82, 0x87, 0x13, 0xcd, 0x57, 0x18, 0xff,
- 0x28, 0xce, 0xc0, 0xe6, 0x0e, 0x06, 0x91, 0x50,
- 0x29, 0x83, 0xd1, 0xf2, 0xc3, 0x2a, 0xdb, 0xd8,
- 0xdb, 0x4e, 0x04, 0xcc, 0x00, 0xeb, 0x8b, 0xb6,
- 0x96, 0xdc, 0xbc, 0xaa, 0xfa, 0x52, 0x77, 0x04,
- 0xc1, 0xdb, 0x19, 0xe4, 0xae, 0x9c, 0xfd, 0x3c,
- 0x8b, 0x03, 0xef, 0x4d, 0xbc, 0x1a, 0x03, 0x65,
- 0xf9, 0xc1, 0xb1, 0x3f, 0x72, 0x86, 0xf2, 0x38,
- 0xaa, 0x19, 0xae, 0x10, 0x88, 0x78, 0x28, 0xda,
- 0x75, 0xc3, 0x3d, 0x02, 0x82, 0x02, 0x9c, 0xb9,
- 0xc1, 0x65, 0x77, 0x76, 0x24, 0x4c, 0x98, 0xf7,
- 0x6d, 0x31, 0x38, 0xfb, 0xdb, 0xfe, 0xdb, 0x37,
- 0x02, 0x76, 0xa1, 0x18, 0x97, 0xa6, 0xcc, 0xde,
- 0x20, 0x09, 0x49, 0x36, 0x24, 0x69, 0x42, 0xf6,
- 0xe4, 0x37, 0x62, 0xf1, 0x59, 0x6d, 0xa9, 0x3c,
- 0xed, 0x34, 0x9c, 0xa3, 0x8e, 0xdb, 0xdc, 0x3a,
- 0xd7, 0xf7, 0x0a, 0x6f, 0xef, 0x2e, 0xd8, 0xd5,
- 0x93, 0x5a, 0x7a, 0xed, 0x08, 0x49, 0x68, 0xe2,
- 0x41, 0xe3, 0x5a, 0x90, 0xc1, 0x86, 0x55, 0xfc,
- 0x51, 0x43, 0x9d, 0xe0, 0xb2, 0xc4, 0x67, 0xb4,
- 0xcb, 0x32, 0x31, 0x25, 0xf0, 0x54, 0x9f, 0x4b,
- 0xd1, 0x6f, 0xdb, 0xd4, 0xdd, 0xfc, 0xaf, 0x5e,
- 0x6c, 0x78, 0x90, 0x95, 0xde, 0xca, 0x3a, 0x48,
- 0xb9, 0x79, 0x3c, 0x9b, 0x19, 0xd6, 0x75, 0x05,
- 0xa0, 0xf9, 0x88, 0xd7, 0xc1, 0xe8, 0xa5, 0x09,
- 0xe4, 0x1a, 0x15, 0xdc, 0x87, 0x23, 0xaa, 0xb2,
- 0x75, 0x8c, 0x63, 0x25, 0x87, 0xd8, 0xf8, 0x3d,
- 0xa6, 0xc2, 0xcc, 0x66, 0xff, 0xa5, 0x66, 0x68,
- 0x55, 0x02, 0x03, 0x01, 0x00, 0x01,
-}
-
-// CheckSignatureFrom verifies that the signature on c is a valid signature
-// from parent.
-func (c *Certificate) CheckSignatureFrom(parent *Certificate) (err error) {
- // RFC 5280, 4.2.1.9:
- // "If the basic constraints extension is not present in a version 3
- // certificate, or the extension is present but the cA boolean is not
- // asserted, then the certified public key MUST NOT be used to verify
- // certificate signatures."
- // (except for Entrust, see comment above entrustBrokenSPKI)
- if (parent.Version == 3 && !parent.BasicConstraintsValid ||
- parent.BasicConstraintsValid && !parent.IsCA) &&
- !bytes.Equal(c.RawSubjectPublicKeyInfo, entrustBrokenSPKI) {
- return ConstraintViolationError{}
- }
-
- if parent.KeyUsage != 0 && parent.KeyUsage&KeyUsageCertSign == 0 {
- return ConstraintViolationError{}
- }
-
- if parent.PublicKeyAlgorithm == UnknownPublicKeyAlgorithm {
- return ErrUnsupportedAlgorithm
- }
-
- // TODO(agl): don't ignore the path length constraint.
-
- return parent.CheckSignature(c.SignatureAlgorithm, c.RawTBSCertificate, c.Signature)
-}
-
-// CheckSignature verifies that signature is a valid signature over signed from
-// c's public key.
-func (c *Certificate) CheckSignature(algo SignatureAlgorithm, signed, signature []byte) (err error) {
- var hashType crypto.Hash
-
- switch algo {
- case SHA1WithRSA, DSAWithSHA1, ECDSAWithSHA1:
- hashType = crypto.SHA1
- case SHA256WithRSA, DSAWithSHA256, ECDSAWithSHA256:
- hashType = crypto.SHA256
- case SHA384WithRSA, ECDSAWithSHA384:
- hashType = crypto.SHA384
- case SHA512WithRSA, ECDSAWithSHA512:
- hashType = crypto.SHA512
- default:
- return ErrUnsupportedAlgorithm
- }
-
- if !hashType.Available() {
- return ErrUnsupportedAlgorithm
- }
- h := hashType.New()
-
- h.Write(signed)
- digest := h.Sum(nil)
-
- switch pub := c.PublicKey.(type) {
- case *rsa.PublicKey:
- return rsa.VerifyPKCS1v15(pub, hashType, digest, signature)
- case *dsa.PublicKey:
- dsaSig := new(dsaSignature)
- if _, err := asn1.Unmarshal(signature, dsaSig); err != nil {
- return err
- }
- if dsaSig.R.Sign() <= 0 || dsaSig.S.Sign() <= 0 {
- return errors.New("DSA signature contained zero or negative values")
- }
- if !dsa.Verify(pub, digest, dsaSig.R, dsaSig.S) {
- return errors.New("DSA verification failure")
- }
- return
- case *ecdsa.PublicKey:
- ecdsaSig := new(ecdsaSignature)
- if _, err := asn1.Unmarshal(signature, ecdsaSig); err != nil {
- return err
- }
- if ecdsaSig.R.Sign() <= 0 || ecdsaSig.S.Sign() <= 0 {
- return errors.New("crypto/x509: ECDSA signature contained zero or negative values")
- }
- if !ecdsa.Verify(pub, digest, ecdsaSig.R, ecdsaSig.S) {
- return errors.New("crypto/x509: ECDSA verification failure")
- }
- return
- }
- return ErrUnsupportedAlgorithm
-}
-
-// CheckCRLSignature checks that the signature in crl is from c.
-func (c *Certificate) CheckCRLSignature(crl *pkix.CertificateList) (err error) {
- algo := getSignatureAlgorithmFromOID(crl.SignatureAlgorithm.Algorithm)
- return c.CheckSignature(algo, crl.TBSCertList.Raw, crl.SignatureValue.RightAlign())
-}
-
-type UnhandledCriticalExtension struct{}
-
-func (h UnhandledCriticalExtension) Error() string {
- return "unhandled critical extension"
-}
-
-type basicConstraints struct {
- IsCA bool `asn1:"optional"`
- MaxPathLen int `asn1:"optional,default:-1"`
-}
-
-// RFC 5280 4.2.1.4
-type policyInformation struct {
- Policy asn1.ObjectIdentifier
- // policyQualifiers omitted
-}
-
-// RFC 5280, 4.2.1.10
-type nameConstraints struct {
- Permitted []generalSubtree `asn1:"optional,tag:0"`
- Excluded []generalSubtree `asn1:"optional,tag:1"`
-}
-
-type generalSubtree struct {
- Name string `asn1:"tag:2,optional,ia5"`
-}
-
-func parsePublicKey(algo PublicKeyAlgorithm, keyData *publicKeyInfo) (interface{}, error) {
- asn1Data := keyData.PublicKey.RightAlign()
- switch algo {
- case RSA:
- p := new(rsaPublicKey)
- _, err := asn1.Unmarshal(asn1Data, p)
- if err != nil {
- return nil, err
- }
-
- pub := &rsa.PublicKey{
- E: p.E,
- N: p.N,
- }
- return pub, nil
- case DSA:
- var p *big.Int
- _, err := asn1.Unmarshal(asn1Data, &p)
- if err != nil {
- return nil, err
- }
- paramsData := keyData.Algorithm.Parameters.FullBytes
- params := new(dsaAlgorithmParameters)
- _, err = asn1.Unmarshal(paramsData, params)
- if err != nil {
- return nil, err
- }
- if p.Sign() <= 0 || params.P.Sign() <= 0 || params.Q.Sign() <= 0 || params.G.Sign() <= 0 {
- return nil, errors.New("zero or negative DSA parameter")
- }
- pub := &dsa.PublicKey{
- Parameters: dsa.Parameters{
- P: params.P,
- Q: params.Q,
- G: params.G,
- },
- Y: p,
- }
- return pub, nil
- case ECDSA:
- paramsData := keyData.Algorithm.Parameters.FullBytes
- namedCurveOID := new(asn1.ObjectIdentifier)
- _, err := asn1.Unmarshal(paramsData, namedCurveOID)
- if err != nil {
- return nil, err
- }
- namedCurve := namedCurveFromOID(*namedCurveOID)
- if namedCurve == nil {
- return nil, errors.New("crypto/x509: unsupported elliptic curve")
- }
- x, y := elliptic.Unmarshal(namedCurve, asn1Data)
- if x == nil {
- return nil, errors.New("crypto/x509: failed to unmarshal elliptic curve point")
- }
- pub := &ecdsa.PublicKey{
- Curve: namedCurve,
- X: x,
- Y: y,
- }
- return pub, nil
- default:
- return nil, nil
- }
- panic("unreachable")
-}
-
-func parseCertificate(in *certificate) (*Certificate, error) {
- out := new(Certificate)
- out.Raw = in.Raw
- out.RawTBSCertificate = in.TBSCertificate.Raw
- out.RawSubjectPublicKeyInfo = in.TBSCertificate.PublicKey.Raw
- out.RawSubject = in.TBSCertificate.Subject.FullBytes
- out.RawIssuer = in.TBSCertificate.Issuer.FullBytes
-
- out.Signature = in.SignatureValue.RightAlign()
- out.SignatureAlgorithm =
- getSignatureAlgorithmFromOID(in.TBSCertificate.SignatureAlgorithm.Algorithm)
-
- out.PublicKeyAlgorithm =
- getPublicKeyAlgorithmFromOID(in.TBSCertificate.PublicKey.Algorithm.Algorithm)
- var err error
- out.PublicKey, err = parsePublicKey(out.PublicKeyAlgorithm, &in.TBSCertificate.PublicKey)
- if err != nil {
- return nil, err
- }
-
- if in.TBSCertificate.SerialNumber.Sign() < 0 {
- return nil, errors.New("negative serial number")
- }
-
- out.Version = in.TBSCertificate.Version + 1
- out.SerialNumber = in.TBSCertificate.SerialNumber
-
- var issuer, subject pkix.RDNSequence
- if _, err := asn1.Unmarshal(in.TBSCertificate.Subject.FullBytes, &subject); err != nil {
- return nil, err
- }
- if _, err := asn1.Unmarshal(in.TBSCertificate.Issuer.FullBytes, &issuer); err != nil {
- return nil, err
- }
-
- out.Issuer.FillFromRDNSequence(&issuer)
- out.Subject.FillFromRDNSequence(&subject)
-
- out.NotBefore = in.TBSCertificate.Validity.NotBefore
- out.NotAfter = in.TBSCertificate.Validity.NotAfter
-
- for _, e := range in.TBSCertificate.Extensions {
- if len(e.Id) == 4 && e.Id[0] == 2 && e.Id[1] == 5 && e.Id[2] == 29 {
- switch e.Id[3] {
- case 15:
- // RFC 5280, 4.2.1.3
- var usageBits asn1.BitString
- _, err := asn1.Unmarshal(e.Value, &usageBits)
-
- if err == nil {
- var usage int
- for i := 0; i < 9; i++ {
- if usageBits.At(i) != 0 {
- usage |= 1 << uint(i)
- }
- }
- out.KeyUsage = KeyUsage(usage)
- continue
- }
- case 19:
- // RFC 5280, 4.2.1.9
- var constraints basicConstraints
- _, err := asn1.Unmarshal(e.Value, &constraints)
-
- if err == nil {
- out.BasicConstraintsValid = true
- out.IsCA = constraints.IsCA
- out.MaxPathLen = constraints.MaxPathLen
- continue
- }
- case 17:
- // RFC 5280, 4.2.1.6
-
- // SubjectAltName ::= GeneralNames
- //
- // GeneralNames ::= SEQUENCE SIZE (1..MAX) OF GeneralName
- //
- // GeneralName ::= CHOICE {
- // otherName [0] OtherName,
- // rfc822Name [1] IA5String,
- // dNSName [2] IA5String,
- // x400Address [3] ORAddress,
- // directoryName [4] Name,
- // ediPartyName [5] EDIPartyName,
- // uniformResourceIdentifier [6] IA5String,
- // iPAddress [7] OCTET STRING,
- // registeredID [8] OBJECT IDENTIFIER }
- var seq asn1.RawValue
- _, err := asn1.Unmarshal(e.Value, &seq)
- if err != nil {
- return nil, err
- }
- if !seq.IsCompound || seq.Tag != 16 || seq.Class != 0 {
- return nil, asn1.StructuralError{Msg: "bad SAN sequence"}
- }
-
- parsedName := false
-
- rest := seq.Bytes
- for len(rest) > 0 {
- var v asn1.RawValue
- rest, err = asn1.Unmarshal(rest, &v)
- if err != nil {
- return nil, err
- }
- switch v.Tag {
- case 1:
- out.EmailAddresses = append(out.EmailAddresses, string(v.Bytes))
- parsedName = true
- case 2:
- out.DNSNames = append(out.DNSNames, string(v.Bytes))
- parsedName = true
- }
- }
-
- if parsedName {
- continue
- }
- // If we didn't parse any of the names then we
- // fall through to the critical check below.
-
- case 30:
- // RFC 5280, 4.2.1.10
-
- // NameConstraints ::= SEQUENCE {
- // permittedSubtrees [0] GeneralSubtrees OPTIONAL,
- // excludedSubtrees [1] GeneralSubtrees OPTIONAL }
- //
- // GeneralSubtrees ::= SEQUENCE SIZE (1..MAX) OF GeneralSubtree
- //
- // GeneralSubtree ::= SEQUENCE {
- // base GeneralName,
- // minimum [0] BaseDistance DEFAULT 0,
- // maximum [1] BaseDistance OPTIONAL }
- //
- // BaseDistance ::= INTEGER (0..MAX)
-
- var constraints nameConstraints
- _, err := asn1.Unmarshal(e.Value, &constraints)
- if err != nil {
- return nil, err
- }
-
- if len(constraints.Excluded) > 0 && e.Critical {
- return out, UnhandledCriticalExtension{}
- }
-
- for _, subtree := range constraints.Permitted {
- if len(subtree.Name) == 0 {
- if e.Critical {
- return out, UnhandledCriticalExtension{}
- }
- continue
- }
- out.PermittedDNSDomains = append(out.PermittedDNSDomains, subtree.Name)
- }
- continue
-
- case 35:
- // RFC 5280, 4.2.1.1
- var a authKeyId
- _, err = asn1.Unmarshal(e.Value, &a)
- if err != nil {
- return nil, err
- }
- out.AuthorityKeyId = a.Id
- continue
-
- case 37:
- // RFC 5280, 4.2.1.12. Extended Key Usage
-
- // id-ce-extKeyUsage OBJECT IDENTIFIER ::= { id-ce 37 }
- //
- // ExtKeyUsageSyntax ::= SEQUENCE SIZE (1..MAX) OF KeyPurposeId
- //
- // KeyPurposeId ::= OBJECT IDENTIFIER
-
- var keyUsage []asn1.ObjectIdentifier
- _, err = asn1.Unmarshal(e.Value, &keyUsage)
- if err != nil {
- return nil, err
- }
-
- for _, u := range keyUsage {
- if extKeyUsage, ok := extKeyUsageFromOID(u); ok {
- out.ExtKeyUsage = append(out.ExtKeyUsage, extKeyUsage)
- } else {
- out.UnknownExtKeyUsage = append(out.UnknownExtKeyUsage, u)
- }
- }
-
- continue
-
- case 14:
- // RFC 5280, 4.2.1.2
- var keyid []byte
- _, err = asn1.Unmarshal(e.Value, &keyid)
- if err != nil {
- return nil, err
- }
- out.SubjectKeyId = keyid
- continue
-
- case 32:
- // RFC 5280 4.2.1.4: Certificate Policies
- var policies []policyInformation
- if _, err = asn1.Unmarshal(e.Value, &policies); err != nil {
- return nil, err
- }
- out.PolicyIdentifiers = make([]asn1.ObjectIdentifier, len(policies))
- for i, policy := range policies {
- out.PolicyIdentifiers[i] = policy.Policy
- }
- }
- }
-
- if e.Critical {
- return out, UnhandledCriticalExtension{}
- }
- }
-
- return out, nil
-}
-
-// ParseCertificate parses a single certificate from the given ASN.1 DER data.
-func ParseCertificate(asn1Data []byte) (*Certificate, error) {
- var cert certificate
- rest, err := asn1.Unmarshal(asn1Data, &cert)
- if err != nil {
- return nil, err
- }
- if len(rest) > 0 {
- return nil, asn1.SyntaxError{Msg: "trailing data"}
- }
-
- return parseCertificate(&cert)
-}
-
-// ParseCertificates parses one or more certificates from the given ASN.1 DER
-// data. The certificates must be concatenated with no intermediate padding.
-func ParseCertificates(asn1Data []byte) ([]*Certificate, error) {
- var v []*certificate
-
- for len(asn1Data) > 0 {
- cert := new(certificate)
- var err error
- asn1Data, err = asn1.Unmarshal(asn1Data, cert)
- if err != nil {
- return nil, err
- }
- v = append(v, cert)
- }
-
- ret := make([]*Certificate, len(v))
- for i, ci := range v {
- cert, err := parseCertificate(ci)
- if err != nil {
- return nil, err
- }
- ret[i] = cert
- }
-
- return ret, nil
-}
-
-func reverseBitsInAByte(in byte) byte {
- b1 := in>>4 | in<<4
- b2 := b1>>2&0x33 | b1<<2&0xcc
- b3 := b2>>1&0x55 | b2<<1&0xaa
- return b3
-}
-
-var (
- oidExtensionSubjectKeyId = []int{2, 5, 29, 14}
- oidExtensionKeyUsage = []int{2, 5, 29, 15}
- oidExtensionExtendedKeyUsage = []int{2, 5, 29, 37}
- oidExtensionAuthorityKeyId = []int{2, 5, 29, 35}
- oidExtensionBasicConstraints = []int{2, 5, 29, 19}
- oidExtensionSubjectAltName = []int{2, 5, 29, 17}
- oidExtensionCertificatePolicies = []int{2, 5, 29, 32}
- oidExtensionNameConstraints = []int{2, 5, 29, 30}
-)
-
-func buildExtensions(template *Certificate) (ret []pkix.Extension, err error) {
- ret = make([]pkix.Extension, 8 /* maximum number of elements. */)
- n := 0
-
- if template.KeyUsage != 0 {
- ret[n].Id = oidExtensionKeyUsage
- ret[n].Critical = true
-
- var a [2]byte
- a[0] = reverseBitsInAByte(byte(template.KeyUsage))
- a[1] = reverseBitsInAByte(byte(template.KeyUsage >> 8))
-
- l := 1
- if a[1] != 0 {
- l = 2
- }
-
- ret[n].Value, err = asn1.Marshal(asn1.BitString{Bytes: a[0:l], BitLength: l * 8})
- if err != nil {
- return
- }
- n++
- }
-
- if len(template.ExtKeyUsage) > 0 || len(template.UnknownExtKeyUsage) > 0 {
- ret[n].Id = oidExtensionExtendedKeyUsage
-
- var oids []asn1.ObjectIdentifier
- for _, u := range template.ExtKeyUsage {
- if oid, ok := oidFromExtKeyUsage(u); ok {
- oids = append(oids, oid)
- } else {
- panic("internal error")
- }
- }
-
- oids = append(oids, template.UnknownExtKeyUsage...)
-
- ret[n].Value, err = asn1.Marshal(oids)
- if err != nil {
- return
- }
- n++
- }
-
- if template.BasicConstraintsValid {
- ret[n].Id = oidExtensionBasicConstraints
- ret[n].Value, err = asn1.Marshal(basicConstraints{template.IsCA, template.MaxPathLen})
- ret[n].Critical = true
- if err != nil {
- return
- }
- n++
- }
-
- if len(template.SubjectKeyId) > 0 {
- ret[n].Id = oidExtensionSubjectKeyId
- ret[n].Value, err = asn1.Marshal(template.SubjectKeyId)
- if err != nil {
- return
- }
- n++
- }
-
- if len(template.AuthorityKeyId) > 0 {
- ret[n].Id = oidExtensionAuthorityKeyId
- ret[n].Value, err = asn1.Marshal(authKeyId{template.AuthorityKeyId})
- if err != nil {
- return
- }
- n++
- }
-
- if len(template.DNSNames) > 0 {
- ret[n].Id = oidExtensionSubjectAltName
- rawValues := make([]asn1.RawValue, len(template.DNSNames))
- for i, name := range template.DNSNames {
- rawValues[i] = asn1.RawValue{Tag: 2, Class: 2, Bytes: []byte(name)}
- }
- ret[n].Value, err = asn1.Marshal(rawValues)
- if err != nil {
- return
- }
- n++
- }
-
- if len(template.PolicyIdentifiers) > 0 {
- ret[n].Id = oidExtensionCertificatePolicies
- policies := make([]policyInformation, len(template.PolicyIdentifiers))
- for i, policy := range template.PolicyIdentifiers {
- policies[i].Policy = policy
- }
- ret[n].Value, err = asn1.Marshal(policies)
- if err != nil {
- return
- }
- n++
- }
-
- if len(template.PermittedDNSDomains) > 0 {
- ret[n].Id = oidExtensionNameConstraints
- ret[n].Critical = template.PermittedDNSDomainsCritical
-
- var out nameConstraints
- out.Permitted = make([]generalSubtree, len(template.PermittedDNSDomains))
- for i, permitted := range template.PermittedDNSDomains {
- out.Permitted[i] = generalSubtree{Name: permitted}
- }
- ret[n].Value, err = asn1.Marshal(out)
- if err != nil {
- return
- }
- n++
- }
-
- // Adding another extension here? Remember to update the maximum number
- // of elements in the make() at the top of the function.
-
- return ret[0:n], nil
-}
-
-func subjectBytes(cert *Certificate) ([]byte, error) {
- if len(cert.RawSubject) > 0 {
- return cert.RawSubject, nil
- }
-
- return asn1.Marshal(cert.Subject.ToRDNSequence())
-}
-
-// CreateCertificate creates a new certificate based on a template. The
-// following members of template are used: SerialNumber, Subject, NotBefore,
-// NotAfter, KeyUsage, ExtKeyUsage, UnknownExtKeyUsage, BasicConstraintsValid,
-// IsCA, MaxPathLen, SubjectKeyId, DNSNames, PermittedDNSDomainsCritical,
-// PermittedDNSDomains.
-//
-// The certificate is signed by parent. If parent is equal to template then the
-// certificate is self-signed. The parameter pub is the public key of the
-// signee and priv is the private key of the signer.
-//
-// The returned slice is the certificate in DER encoding.
-//
-// The only supported key types are RSA and ECDSA (*rsa.PublicKey or
-// *ecdsa.PublicKey for pub, *rsa.PrivateKey or *ecdsa.PublicKey for priv).
-func CreateCertificate(rand io.Reader, template, parent *Certificate, pub interface{}, priv interface{}) (cert []byte, err error) {
- var publicKeyBytes []byte
- var publicKeyAlgorithm pkix.AlgorithmIdentifier
-
- switch pub := pub.(type) {
- case *rsa.PublicKey:
- publicKeyBytes, err = asn1.Marshal(rsaPublicKey{
- N: pub.N,
- E: pub.E,
- })
- publicKeyAlgorithm.Algorithm = oidPublicKeyRSA
- case *ecdsa.PublicKey:
- oid, ok := oidFromNamedCurve(pub.Curve)
- if !ok {
- return nil, errors.New("x509: unknown elliptic curve")
- }
- publicKeyAlgorithm.Algorithm = oidPublicKeyECDSA
- var paramBytes []byte
- paramBytes, err = asn1.Marshal(oid)
- if err != nil {
- return
- }
- publicKeyAlgorithm.Parameters.FullBytes = paramBytes
- publicKeyBytes = elliptic.Marshal(pub.Curve, pub.X, pub.Y)
- default:
- return nil, errors.New("x509: only RSA and ECDSA public keys supported")
- }
-
- var signatureAlgorithm pkix.AlgorithmIdentifier
- var hashFunc crypto.Hash
-
- switch priv := priv.(type) {
- case *rsa.PrivateKey:
- signatureAlgorithm.Algorithm = oidSignatureSHA1WithRSA
- hashFunc = crypto.SHA1
- case *ecdsa.PrivateKey:
- switch priv.Curve {
- case elliptic.P224(), elliptic.P256():
- hashFunc = crypto.SHA256
- signatureAlgorithm.Algorithm = oidSignatureECDSAWithSHA256
- case elliptic.P384():
- hashFunc = crypto.SHA384
- signatureAlgorithm.Algorithm = oidSignatureECDSAWithSHA384
- case elliptic.P521():
- hashFunc = crypto.SHA512
- signatureAlgorithm.Algorithm = oidSignatureECDSAWithSHA512
- default:
- return nil, errors.New("x509: unknown elliptic curve")
- }
- default:
- return nil, errors.New("x509: only RSA and ECDSA private keys supported")
- }
-
- if err != nil {
- return
- }
-
- if len(parent.SubjectKeyId) > 0 {
- template.AuthorityKeyId = parent.SubjectKeyId
- }
-
- extensions, err := buildExtensions(template)
- if err != nil {
- return
- }
-
- asn1Issuer, err := subjectBytes(parent)
- if err != nil {
- return
- }
-
- asn1Subject, err := subjectBytes(template)
- if err != nil {
- return
- }
-
- encodedPublicKey := asn1.BitString{BitLength: len(publicKeyBytes) * 8, Bytes: publicKeyBytes}
- c := tbsCertificate{
- Version: 2,
- SerialNumber: template.SerialNumber,
- SignatureAlgorithm: signatureAlgorithm,
- Issuer: asn1.RawValue{FullBytes: asn1Issuer},
- Validity: validity{template.NotBefore.UTC(), template.NotAfter.UTC()},
- Subject: asn1.RawValue{FullBytes: asn1Subject},
- PublicKey: publicKeyInfo{nil, publicKeyAlgorithm, encodedPublicKey},
- Extensions: extensions,
- }
-
- tbsCertContents, err := asn1.Marshal(c)
- if err != nil {
- return
- }
-
- c.Raw = tbsCertContents
-
- h := hashFunc.New()
- h.Write(tbsCertContents)
- digest := h.Sum(nil)
-
- var signature []byte
-
- switch priv := priv.(type) {
- case *rsa.PrivateKey:
- signature, err = rsa.SignPKCS1v15(rand, priv, hashFunc, digest)
- case *ecdsa.PrivateKey:
- var r, s *big.Int
- if r, s, err = ecdsa.Sign(rand, priv, digest); err == nil {
- signature, err = asn1.Marshal(ecdsaSignature{r, s})
- }
- default:
- panic("internal error")
- }
-
- if err != nil {
- return
- }
-
- cert, err = asn1.Marshal(certificate{
- nil,
- c,
- signatureAlgorithm,
- asn1.BitString{Bytes: signature, BitLength: len(signature) * 8},
- })
- return
-}
-
-// pemCRLPrefix is the magic string that indicates that we have a PEM encoded
-// CRL.
-var pemCRLPrefix = []byte("-----BEGIN X509 CRL")
-
-// pemType is the type of a PEM encoded CRL.
-var pemType = "X509 CRL"
-
-// ParseCRL parses a CRL from the given bytes. It's often the case that PEM
-// encoded CRLs will appear where they should be DER encoded, so this function
-// will transparently handle PEM encoding as long as there isn't any leading
-// garbage.
-func ParseCRL(crlBytes []byte) (certList *pkix.CertificateList, err error) {
- if bytes.HasPrefix(crlBytes, pemCRLPrefix) {
- block, _ := pem.Decode(crlBytes)
- if block != nil && block.Type == pemType {
- crlBytes = block.Bytes
- }
- }
- return ParseDERCRL(crlBytes)
-}
-
-// ParseDERCRL parses a DER encoded CRL from the given bytes.
-func ParseDERCRL(derBytes []byte) (certList *pkix.CertificateList, err error) {
- certList = new(pkix.CertificateList)
- _, err = asn1.Unmarshal(derBytes, certList)
- if err != nil {
- certList = nil
- }
- return
-}
-
-// CreateCRL returns a DER encoded CRL, signed by this Certificate, that
-// contains the given list of revoked certificates.
-//
-// The only supported key type is RSA (*rsa.PrivateKey for priv).
-func (c *Certificate) CreateCRL(rand io.Reader, priv interface{}, revokedCerts []pkix.RevokedCertificate, now, expiry time.Time) (crlBytes []byte, err error) {
- rsaPriv, ok := priv.(*rsa.PrivateKey)
- if !ok {
- return nil, errors.New("x509: non-RSA private keys not supported")
- }
- tbsCertList := pkix.TBSCertificateList{
- Version: 2,
- Signature: pkix.AlgorithmIdentifier{
- Algorithm: oidSignatureSHA1WithRSA,
- },
- Issuer: c.Subject.ToRDNSequence(),
- ThisUpdate: now.UTC(),
- NextUpdate: expiry.UTC(),
- RevokedCertificates: revokedCerts,
- }
-
- tbsCertListContents, err := asn1.Marshal(tbsCertList)
- if err != nil {
- return
- }
-
- h := sha1.New()
- h.Write(tbsCertListContents)
- digest := h.Sum(nil)
-
- signature, err := rsa.SignPKCS1v15(rand, rsaPriv, crypto.SHA1, digest)
- if err != nil {
- return
- }
-
- return asn1.Marshal(pkix.CertificateList{
- TBSCertList: tbsCertList,
- SignatureAlgorithm: pkix.AlgorithmIdentifier{
- Algorithm: oidSignatureSHA1WithRSA,
- },
- SignatureValue: asn1.BitString{Bytes: signature, BitLength: len(signature) * 8},
- })
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-26 14:58:44 +0000