Golang asn1.BitString类代码示例

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本文整理汇总了Golang中encoding/asn1.BitString类的典型用法代码示例。如果您正苦于以下问题：Golang BitString类的具体用法？Golang BitString怎么用？Golang BitString使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。

在下文中一共展示了BitString类的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Golang代码示例。

示例1: parseCertificate

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 {
//.........这里部分代码省略.........

开发者ID:jmcadden，项目名称:EbbRT-gcc，代码行数:101，代码来源:x509.go

示例2: parseCertificate

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("x509: 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 {
		out.Extensions = append(out.Extensions, e)

		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

//.........这里部分代码省略.........

开发者ID:ArtemL，项目名称:GCC，代码行数:101，代码来源:x509.go

注：本文中的encoding/asn1.BitString类示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。