How to use subject method of x509 Package

Best K6 code snippet using x509.subject

generate.go

Source:generate.go Github

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...26 numChildOrgs = flag.Int("child-orgs", 2, "number of intermediaries per organization")27 numClientCerts = flag.Int("clients", 1, "number of client certificates per organization")28 numServerCerts = flag.Int("servers", 1, "number of server certificates per organization")29)30//default template for X509 subject31func subjectTemplate() pkix.Name {32 return pkix.Name{33 Country: []string{"US"},34 Locality: []string{"San Francisco"},35 Province: []string{"California"},36 }37}38//default template for X509 certificates39func x509Template() (x509.Certificate, error) {40 //generate a serial number41 serialNumberLimit := new(big.Int).Lsh(big.NewInt(1), 128)42 serialNumber, err := rand.Int(rand.Reader, serialNumberLimit)43 if err != nil {44 return x509.Certificate{}, err45 }46 now := time.Now()47 //basic template to use48 x509 := x509.Certificate{49 SerialNumber: serialNumber,50 NotBefore: now,51 NotAfter: now.Add(3650 * 24 * time.Hour), //~ten years52 KeyUsage: x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature,53 BasicConstraintsValid: true,54 }55 return x509, nil56}57//generate an EC private key (P256 curve)58func genKeyECDSA(name string) (*ecdsa.PrivateKey, error) {59 priv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)60 if err != nil {61 return nil, err62 }63 //write key out to file64 keyBytes, err := x509.MarshalECPrivateKey(priv)65 keyFile, err := os.OpenFile(name+"-key.pem", os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)66 if err != nil {67 return nil, err68 }69 pem.Encode(keyFile, &pem.Block{Type: "EC PRIVATE KEY", Bytes: keyBytes})70 keyFile.Close()71 return priv, nil72}73//generate a signed X509 certficate using ECDSA74func genCertificateECDSA(name string, template, parent *x509.Certificate, pub *ecdsa.PublicKey,75 priv *ecdsa.PrivateKey) (*x509.Certificate, error) {76 //create the x509 public cert77 certBytes, err := x509.CreateCertificate(rand.Reader, template, parent, pub, priv)78 if err != nil {79 return nil, err80 }81 //write cert out to file82 certFile, err := os.Create(name + "-cert.pem")83 if err != nil {84 return nil, err85 }86 //pem encode the cert87 pem.Encode(certFile, &pem.Block{Type: "CERTIFICATE", Bytes: certBytes})88 certFile.Close()89 x509Cert, err := x509.ParseCertificate(certBytes)90 if err != nil {91 return nil, err92 }93 return x509Cert, nil94}95//generate an EC certificate appropriate for use by a TLS server96func genServerCertificateECDSA(name string, signKey *ecdsa.PrivateKey, signCert *x509.Certificate) error {97 fmt.Println(name)98 key, err := genKeyECDSA(name)99 template, err := x509Template()100 if err != nil {101 return err102 }103 template.ExtKeyUsage = []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth,104 x509.ExtKeyUsageClientAuth}105 //set the organization for the subject106 subject := subjectTemplate()107 subject.Organization = []string{name}108 subject.CommonName = "localhost"109 template.Subject = subject110 template.DNSNames = []string{"localhost"}111 template.IPAddresses = []net.IP{net.ParseIP("127.0.0.1")}112 _, err = genCertificateECDSA(name, &template, signCert, &key.PublicKey, signKey)113 if err != nil {114 return err115 }116 return nil117}118//generate an EC certificate appropriate for use by a TLS server119func genClientCertificateECDSA(name string, signKey *ecdsa.PrivateKey, signCert *x509.Certificate) error {120 fmt.Println(name)121 key, err := genKeyECDSA(name)122 template, err := x509Template()123 if err != nil {124 return err125 }126 template.ExtKeyUsage = []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth}127 //set the organization for the subject128 subject := subjectTemplate()129 subject.Organization = []string{name}130 subject.CommonName = name131 template.Subject = subject132 _, err = genCertificateECDSA(name, &template, signCert, &key.PublicKey, signKey)133 if err != nil {134 return err135 }136 return nil137}138//generate an EC certificate signing(CA) key pair and output as139//PEM-encoded files140func genCertificateAuthorityECDSA(name string) (*ecdsa.PrivateKey, *x509.Certificate, error) {141 key, err := genKeyECDSA(name)142 template, err := x509Template()143 if err != nil {144 return nil, nil, err145 }146 //this is a CA147 template.IsCA = true148 template.KeyUsage |= x509.KeyUsageCertSign | x509.KeyUsageCRLSign149 template.ExtKeyUsage = []x509.ExtKeyUsage{x509.ExtKeyUsageAny}150 //set the organization for the subject151 subject := subjectTemplate()152 subject.Organization = []string{name}153 subject.CommonName = name154 template.Subject = subject155 template.SubjectKeyId = []byte{1, 2, 3, 4}156 x509Cert, err := genCertificateECDSA(name, &template, &template, &key.PublicKey, key)157 if err != nil {158 return nil, nil, err159 }160 return key, x509Cert, nil161}162//generate an EC certificate appropriate for use by a TLS server163func genIntermediateCertificateAuthorityECDSA(name string, signKey *ecdsa.PrivateKey,164 signCert *x509.Certificate) (*ecdsa.PrivateKey, *x509.Certificate, error) {165 fmt.Println(name)166 key, err := genKeyECDSA(name)167 template, err := x509Template()168 if err != nil {169 return nil, nil, err170 }171 //this is a CA172 template.IsCA = true173 template.KeyUsage |= x509.KeyUsageCertSign | x509.KeyUsageCRLSign174 template.ExtKeyUsage = []x509.ExtKeyUsage{x509.ExtKeyUsageAny}175 //set the organization for the subject176 subject := subjectTemplate()177 subject.Organization = []string{name}178 subject.CommonName = name179 template.Subject = subject180 template.SubjectKeyId = []byte{1, 2, 3, 4}181 x509Cert, err := genCertificateECDSA(name, &template, signCert, &key.PublicKey, signKey)182 if err != nil {183 return nil, nil, err184 }185 return key, x509Cert, nil186}187func main() {188 //parse the command line flags189 flag.Parse()190 fmt.Printf("Generating %d organizations each with %d server(s) and %d client(s)\n",191 *numOrgs, *numServerCerts, *numClientCerts)192 baseOrgName := "Org"193 //generate orgs / CAs...

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ca.go

Source:ca.go Github

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...64 template.ExtKeyUsage = []x509.ExtKeyUsage{65 x509.ExtKeyUsageClientAuth,66 x509.ExtKeyUsageServerAuth,67 }68 //set the organization for the subject69 subject := subjectTemplateAdditional(country, province, locality, orgUnit, streetAddress, postalCode)70 subject.Organization = []string{org}71 subject.CommonName = name72 template.Subject = subject73 template.SubjectKeyId = computeSKI(priv)74 x509Cert, err := genCertificateECDSA(75 baseDir,76 name,77 &template,78 &template,79 &priv.PublicKey,80 priv,81 )82 if err != nil {83 return nil, err84 }85 ca = &CA{86 Name: name,87 Signer: &csp.ECDSASigner{88 PrivateKey: priv,89 },90 SignCert: x509Cert,91 Country: country,92 Province: province,93 Locality: locality,94 OrganizationalUnit: orgUnit,95 StreetAddress: streetAddress,96 PostalCode: postalCode,97 }98 return ca, err99}100// SignCertificate creates a signed certificate based on a built-in template101// and saves it in baseDir/name102func (ca *CA) SignCertificate(103 baseDir,104 name string,105 orgUnits,106 alternateNames []string,107 pub *ecdsa.PublicKey,108 ku x509.KeyUsage,109 eku []x509.ExtKeyUsage,110) (*x509.Certificate, error) {111 template := x509Template()112 template.KeyUsage = ku113 template.ExtKeyUsage = eku114 //set the organization for the subject115 subject := subjectTemplateAdditional(116 ca.Country,117 ca.Province,118 ca.Locality,119 ca.OrganizationalUnit,120 ca.StreetAddress,121 ca.PostalCode,122 )123 subject.CommonName = name124 subject.OrganizationalUnit = append(subject.OrganizationalUnit, orgUnits...)125 template.Subject = subject126 for _, san := range alternateNames {127 // try to parse as an IP address first128 ip := net.ParseIP(san)129 if ip != nil {130 template.IPAddresses = append(template.IPAddresses, ip)131 } else {132 template.DNSNames = append(template.DNSNames, san)133 }134 }135 cert, err := genCertificateECDSA(136 baseDir,137 name,138 &template,139 ca.SignCert,140 pub,141 ca.Signer,142 )143 if err != nil {144 return nil, err145 }146 return cert, nil147}148// compute Subject Key Identifier149func computeSKI(privKey *ecdsa.PrivateKey) []byte {150 // Marshall the public key151 raw := elliptic.Marshal(privKey.Curve, privKey.PublicKey.X, privKey.PublicKey.Y)152 // Hash it153 hash := sha256.Sum256(raw)154 return hash[:]155}156// default template for X509 subject157func subjectTemplate() pkix.Name {158 return pkix.Name{159 Country: []string{"US"},160 Locality: []string{"San Francisco"},161 Province: []string{"California"},162 }163}164// Additional for X509 subject165func subjectTemplateAdditional(166 country,167 province,168 locality,169 orgUnit,170 streetAddress,171 postalCode string,172) pkix.Name {173 name := subjectTemplate()174 if len(country) >= 1 {175 name.Country = []string{country}176 }177 if len(province) >= 1 {178 name.Province = []string{province}179 }180 if len(locality) >= 1 {181 name.Locality = []string{locality}182 }183 if len(orgUnit) >= 1 {184 name.OrganizationalUnit = []string{orgUnit}185 }186 if len(streetAddress) >= 1 {187 name.StreetAddress = []string{streetAddress}...

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subject

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1import (2func main() {3 cert, err := ioutil.ReadFile("cert.pem")4 if err != nil {5 fmt.Println(err)6 }7 block, _ := pem.Decode(cert)8 if block == nil {9 fmt.Println("failed to parse certificate PEM")10 }11 certParsed, err := x509.ParseCertificate(block.Bytes)12 if err != nil {13 fmt.Println(err)14 }15 fmt.Println(certParsed.Subject)16}17import (18func main() {19 cert, err := ioutil.ReadFile("cert.pem")20 if err != nil {21 fmt.Println(err)22 }23 block, _ := pem.Decode(cert)24 if block == nil {25 fmt.Println("failed to parse certificate PEM")26 }27 certParsed, err := x509.ParseCertificate(block.Bytes)28 if err != nil {29 fmt.Println(err)30 }31 certPool := x509.NewCertPool()32 certPool.AddCert(certParsed)33 opts := x509.VerifyOptions{34 }35 if _, err := certParsed.Verify(opts); err != nil {36 fmt.Println("error in verifying the certificate")37 } else {38 fmt.Println("certificate verified")39 }40}41import (42func main() {43 cert, err := ioutil.ReadFile("cert.pem")44 if err != nil {45 fmt.Println(err)46 }47 block, _ := pem.Decode(cert)48 if block == nil {49 fmt.Println("failed to parse certificate PEM")50 }51 certParsed, err := x509.ParseCertificate(block.Bytes)52 if err != nil {53 fmt.Println(err)54 }55 fmt.Println(certParsed.Subject)56 certPool := x509.NewCertPool()57 certPool.AddCert(certParsed)58 opts := x509.VerifyOptions{

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subject

Using AI Code Generation

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1import (2func main() {3 cert, err := ioutil.ReadFile("cert.pem")4 if err != nil {5 fmt.Println(err)6 }7 block, _ := pem.Decode(cert)8 if block == nil {9 fmt.Println("Failed to parse certificate PEM")10 }11 cert, err = x509.ParseCertificate(block.Bytes)12 if err != nil {13 fmt.Println("Failed to parse certificate: " + err.Error())14 }15 fmt.Println(cert.Subject)16}17import (18func main() {19 cert, err := ioutil.ReadFile("cert.pem")20 if err != nil {21 fmt.Println(err)22 }23 block, _ := pem.Decode(cert)24 if block == nil {25 fmt.Println("Failed to parse certificate PEM")26 }27 cert, err = x509.ParseCertificate(block.Bytes)28 if err != nil {29 fmt.Println("Failed to parse certificate: " + err.Error())30 }31 fmt.Println(cert.DNSNames)32}

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subject

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1import (2func main() {3 cert, err := os.ReadFile("cert.pem")4 if err != nil {5 fmt.Println(err)6 }7 block, _ := pem.Decode(cert)8 if block == nil {9 fmt.Println("Failed to parse certificate PEM")10 }11 certParsed, err := x509.ParseCertificate(block.Bytes)12 if err != nil {13 fmt.Println(err)14 }15 fmt.Println(certParsed.Subject)16}17{C=US; O=Let's Encrypt; CN=Let's Encrypt Authority X3}18import (19func main() {20 cert, err := os.ReadFile("cert.pem")21 if err != nil {22 fmt.Println(err)23 }24 block, _ := pem.Decode(cert)25 if block == nil {26 fmt.Println("Failed to parse certificate PEM")27 }28 certParsed, err := x509.ParseCertificate(block.Bytes)29 if err != nil {30 fmt.Println(err)31 }32 fmt.Println(certParsed.Issuer)33}34{C=US; O=Internet Security Research Group; CN=ISRG Root X1}35import (36func main() {37 cert, err := os.ReadFile("cert.pem

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subject

Using AI Code Generation

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1import (2func main() {3 cert, err := ioutil.ReadFile("cert.pem")4 if err != nil {5 fmt.Println("Error reading file:", err)6 }7 block, _ := pem.Decode(cert)8 if block == nil {9 fmt.Println("Error decoding file")10 }11 x509Cert, err := x509.ParseCertificate(block.Bytes)12 if err != nil {13 fmt.Println("Error parsing certificate:", err)14 }15 fmt.Println(x509Cert.Subject)16}

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subject

Using AI Code Generation

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1import (2func main() {3 key, err := rsa.GenerateKey(rand.Reader, 2048)4 if err != nil {5 panic(err)6 }7 template := x509.Certificate{8 SerialNumber: big.NewInt(1),9 Subject: pkix.Name{10 Organization: []string{"Acme Co"},11 },12 NotBefore: time.Now(),13 NotAfter: time.Now().Add(time.Hour * 24 * 365),14 ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},15 }16 derBytes, err := x509.CreateCertificate(rand.Reader, &template, &template, &key.PublicKey, key)17 if err != nil {18 panic(err)19 }20 cert, err := x509.ParseCertificate(derBytes)21 if err != nil {22 panic(err)23 }24 fmt.Println(cert.Subject)25}26{O:Acme Co}27import (28func main() {29 key, err := rsa.GenerateKey(rand.Reader, 2048)30 if err != nil {31 panic(err)32 }33 template := x509.Certificate{34 SerialNumber: big.NewInt(1),35 Subject: pkix.Name{36 Organization: []string{"Acme Co"},37 },38 NotBefore: time.Now(),39 NotAfter: time.Now().Add(time.Hour * 24 * 365),40 ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},41 }

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subject

Using AI Code Generation

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1import (2func main() {3 data, err := ioutil.ReadFile("cert.pem")4 if err != nil {5 fmt.Println("Error reading file:", err)6 }7 block, _ := pem.Decode(data)8 if block == nil {9 fmt.Println("Error decoding PEM block")10 }11 cert, err := x509.ParseCertificate(block.Bytes)12 if err != nil {13 fmt.Println("Error parsing certificate:", err)14 }15 fmt.Println("Subject:", cert.Subject)16}17Subject: {C=US, ST=CA, L=San Francisco, O=Google, OU=Security, CN=www.google.com}18import (19func main() {20 data, err := ioutil.ReadFile("cert.pem")21 if err != nil {22 fmt.Println("Error reading file:", err)23 }24 block, _ := pem.Decode(data)25 if block == nil {26 fmt.Println("Error decoding PEM block")27 }28 cert, err := x509.ParseCertificate(block.Bytes)29 if err != nil {30 fmt.Println("Error parsing certificate:", err)31 }32 fmt.Println("Subject:", cert.Subject)33 fmt.Println("Common Name:", cert.Subject.CommonName)34 fmt.Println("Organization:", cert.Subject.Organization)35 fmt.Println("Country:", cert.Subject.Country

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subject

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1import (2func main() {3 pubPEM, err := ioutil.ReadFile("public.pem")4 if err != nil {5 fmt.Println("Error reading public key file:", err)6 }7 pubDER, _ := pem.Decode(pubPEM)8 if pubDER == nil {9 fmt.Println("Error decoding public key")10 }11 pubKey, err := x509.ParsePKIXPublicKey(pubDER.Bytes)12 if err != nil {13 fmt.Println("Error parsing public key:", err)14 }15 rsaKey, ok := pubKey.(*rsa.PublicKey)16 if !ok {17 fmt.Println("Error casting public key to RSA")18 }19 fmt.Println(rsaKey)20}21&{65537 [181 6 131 236 144 128 12 80 165 107 146 141 230 2 54 178 88 158 141 238 117 206 54 39 242 108 216 43 99 134 180 20 85 33 44 26 178 116 40 42 123 45 255 98 96 58 128 48 198 163 122 93 117 236 135 193 179 75 22 202 172 96 184 66 198 93 202 146 109 78 212 204 44 183 147 79 123 170 96 111 202 241 213 86 212 18 161 161 235 29 182 95 78 160 89 221 29 166 169 7 71 188 191 72 241 202 174 139 85 50 90 32 118 88 228 177 36 252 34 247 142 163 203 134 2 38 182 54 187 124 159

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subject

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1import (2func main() {3 b, err := ioutil.ReadFile("cert.pem")4 if err != nil {5 fmt.Println("Error reading file")6 }7 block, _ := pem.Decode(b)8 if block == nil {9 fmt.Println("Error decoding pem file")10 }11 cert, err := x509.ParseCertificate(block.Bytes)12 if err != nil {13 fmt.Println("Error parsing x509 file")14 }15 fmt.Println(cert.Subject)16}17{C=US, ST=CA, L=San Jose, O=Acme, OU=IT, CN=Acme Inc}18Your name to display (optional):

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