54 lines
1.4 KiB
Go
54 lines
1.4 KiB
Go
package certgen
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import (
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"crypto/rand"
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"crypto/rsa"
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"crypto/tls"
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"crypto/x509"
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"crypto/x509/pkix"
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"log"
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"math/big"
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"time"
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)
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func MakeCaTls() (*CertGen, error) {
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ca := &x509.Certificate{
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SerialNumber: big.NewInt(29052019),
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Subject: pkix.Name{
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Organization: []string{"Ski Creds CA"},
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Country: []string{"GB"},
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Province: []string{""},
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Locality: []string{"London"},
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CommonName: "ski-creds-ca",
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},
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NotBefore: time.Now(),
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NotAfter: time.Now().AddDate(10, 0, 0),
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IsCA: true,
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ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth, x509.ExtKeyUsageServerAuth},
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KeyUsage: x509.KeyUsageDigitalSignature | x509.KeyUsageCertSign,
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BasicConstraintsValid: true,
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}
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caPrivKey, err := rsa.GenerateKey(rand.Reader, 4096)
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if err != nil {
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log.Fatalln("Failed to generate CA private key:", err)
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}
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caBytes, err := x509.CreateCertificate(rand.Reader, ca, ca, caPrivKey.Public(), caPrivKey)
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if err != nil {
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log.Fatalln("Failed to generate CA certificate bytes:", err)
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}
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privKeyBytes := x509.MarshalPKCS1PrivateKey(caPrivKey)
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gen := &CertGen{cert: ca, certBytes: caBytes, key: caPrivKey, keyBytes: privKeyBytes}
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err = gen.generatePem()
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if err != nil {
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return nil, err
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}
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caKeyPair, err := tls.X509KeyPair(gen.certPem, gen.keyPem)
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if err != nil {
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log.Fatalln("Failed to generate CA key pair:", err)
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}
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gen.tlsCert = caKeyPair
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return gen, nil
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}
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