| // Copyright 2011 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 pkix contains shared, low level structures used for ASN.1 parsing |
| // and serialization of X.509 certificates, CRL and OCSP. |
| package pkix |
| |
| import ( |
| "asn1" |
| "big" |
| "time" |
| ) |
| |
| // AlgorithmIdentifier represents the ASN.1 structure of the same name. See RFC |
| // 5280, section 4.1.1.2. |
| type AlgorithmIdentifier struct { |
| Algorithm asn1.ObjectIdentifier |
| Parameters asn1.RawValue `asn1:"optional"` |
| } |
| |
| type RDNSequence []RelativeDistinguishedNameSET |
| |
| type RelativeDistinguishedNameSET []AttributeTypeAndValue |
| |
| type AttributeTypeAndValue struct { |
| Type asn1.ObjectIdentifier |
| Value interface{} |
| } |
| |
| // Extension represents the ASN.1 structure of the same name. See RFC |
| // 5280, section 4.2. |
| type Extension struct { |
| Id asn1.ObjectIdentifier |
| Critical bool `asn1:"optional"` |
| Value []byte |
| } |
| |
| // Name represents an X.509 distinguished name. This only includes the common |
| // elements of a DN. Additional elements in the name are ignored. |
| type Name struct { |
| Country, Organization, OrganizationalUnit []string |
| Locality, Province []string |
| StreetAddress, PostalCode []string |
| SerialNumber, CommonName string |
| } |
| |
| func (n *Name) FillFromRDNSequence(rdns *RDNSequence) { |
| for _, rdn := range *rdns { |
| if len(rdn) == 0 { |
| continue |
| } |
| atv := rdn[0] |
| value, ok := atv.Value.(string) |
| if !ok { |
| continue |
| } |
| |
| t := atv.Type |
| if len(t) == 4 && t[0] == 2 && t[1] == 5 && t[2] == 4 { |
| switch t[3] { |
| case 3: |
| n.CommonName = value |
| case 5: |
| n.SerialNumber = value |
| case 6: |
| n.Country = append(n.Country, value) |
| case 7: |
| n.Locality = append(n.Locality, value) |
| case 8: |
| n.Province = append(n.Province, value) |
| case 9: |
| n.StreetAddress = append(n.StreetAddress, value) |
| case 10: |
| n.Organization = append(n.Organization, value) |
| case 11: |
| n.OrganizationalUnit = append(n.OrganizationalUnit, value) |
| case 17: |
| n.PostalCode = append(n.PostalCode, value) |
| } |
| } |
| } |
| } |
| |
| var ( |
| oidCountry = []int{2, 5, 4, 6} |
| oidOrganization = []int{2, 5, 4, 10} |
| oidOrganizationalUnit = []int{2, 5, 4, 11} |
| oidCommonName = []int{2, 5, 4, 3} |
| oidSerialNumber = []int{2, 5, 4, 5} |
| oidLocality = []int{2, 5, 4, 7} |
| oidProvince = []int{2, 5, 4, 8} |
| oidStreetAddress = []int{2, 5, 4, 9} |
| oidPostalCode = []int{2, 5, 4, 17} |
| ) |
| |
| // appendRDNs appends a relativeDistinguishedNameSET to the given RDNSequence |
| // and returns the new value. The relativeDistinguishedNameSET contains an |
| // attributeTypeAndValue for each of the given values. See RFC 5280, A.1, and |
| // search for AttributeTypeAndValue. |
| func appendRDNs(in RDNSequence, values []string, oid asn1.ObjectIdentifier) RDNSequence { |
| if len(values) == 0 { |
| return in |
| } |
| |
| s := make([]AttributeTypeAndValue, len(values)) |
| for i, value := range values { |
| s[i].Type = oid |
| s[i].Value = value |
| } |
| |
| return append(in, s) |
| } |
| |
| func (n Name) ToRDNSequence() (ret RDNSequence) { |
| ret = appendRDNs(ret, n.Country, oidCountry) |
| ret = appendRDNs(ret, n.Organization, oidOrganization) |
| ret = appendRDNs(ret, n.OrganizationalUnit, oidOrganizationalUnit) |
| ret = appendRDNs(ret, n.Locality, oidLocality) |
| ret = appendRDNs(ret, n.Province, oidProvince) |
| ret = appendRDNs(ret, n.StreetAddress, oidStreetAddress) |
| ret = appendRDNs(ret, n.PostalCode, oidPostalCode) |
| if len(n.CommonName) > 0 { |
| ret = appendRDNs(ret, []string{n.CommonName}, oidCommonName) |
| } |
| if len(n.SerialNumber) > 0 { |
| ret = appendRDNs(ret, []string{n.SerialNumber}, oidSerialNumber) |
| } |
| |
| return ret |
| } |
| |
| // CertificateList represents the ASN.1 structure of the same name. See RFC |
| // 5280, section 5.1. Use Certificate.CheckCRLSignature to verify the |
| // signature. |
| type CertificateList struct { |
| TBSCertList TBSCertificateList |
| SignatureAlgorithm AlgorithmIdentifier |
| SignatureValue asn1.BitString |
| } |
| |
| // HasExpired returns true iff currentTimeSeconds is past the expiry time of |
| // certList. |
| func (certList *CertificateList) HasExpired(currentTimeSeconds int64) bool { |
| return certList.TBSCertList.NextUpdate.Seconds() <= currentTimeSeconds |
| } |
| |
| // TBSCertificateList represents the ASN.1 structure of the same name. See RFC |
| // 5280, section 5.1. |
| type TBSCertificateList struct { |
| Raw asn1.RawContent |
| Version int `asn1:"optional,default:2"` |
| Signature AlgorithmIdentifier |
| Issuer RDNSequence |
| ThisUpdate *time.Time |
| NextUpdate *time.Time |
| RevokedCertificates []RevokedCertificate `asn1:"optional"` |
| Extensions []Extension `asn1:"tag:0,optional,explicit"` |
| } |
| |
| // RevokedCertificate represents the ASN.1 structure of the same name. See RFC |
| // 5280, section 5.1. |
| type RevokedCertificate struct { |
| SerialNumber *big.Int |
| RevocationTime *time.Time |
| Extensions []Extension `asn1:"optional"` |
| } |