How to use subject method of x509 Package

Best K6 code snippet using x509.subject

generate.go

Source:generate.go

...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...

ca.go

Source:ca.go

...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}...

subject

Using AI Code Generation

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{

subject

Using AI Code Generation

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}

subject

Using AI Code Generation

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

subject

Using AI Code Generation

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}

subject

Using AI Code Generation

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	}

subject

Using AI Code Generation

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

subject

Using AI Code Generation

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

subject

Using AI Code Generation

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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