f1038a132b
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72 lines
1.6 KiB
Go
72 lines
1.6 KiB
Go
package crypto
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import (
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"crypto/ecdsa"
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"crypto/elliptic"
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"crypto/rand"
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"crypto/tls"
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"crypto/x509"
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"crypto/x509/pkix"
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"encoding/pem"
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"math/big"
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"net"
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"os"
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"time"
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)
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// GenerateSelfSignedCert 生成自签名证书
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func GenerateSelfSignedCert(certFile, keyFile string) error {
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priv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
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if err != nil {
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return err
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}
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serialNumber, err := rand.Int(rand.Reader, new(big.Int).Lsh(big.NewInt(1), 128))
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if err != nil {
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return err
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}
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template := x509.Certificate{
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SerialNumber: serialNumber,
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Subject: pkix.Name{
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Organization: []string{"GoTunnel"},
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CommonName: "GoTunnel Server",
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},
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NotBefore: time.Now(),
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NotAfter: time.Now().AddDate(10, 0, 0), // 10年有效期
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KeyUsage: x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature,
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ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
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BasicConstraintsValid: true,
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IPAddresses: []net.IP{net.ParseIP("127.0.0.1")},
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DNSNames: []string{"localhost"},
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}
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certDER, err := x509.CreateCertificate(rand.Reader, &template, &template, &priv.PublicKey, priv)
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if err != nil {
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return err
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}
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// 写入证书文件
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certOut, err := os.Create(certFile)
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if err != nil {
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return err
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}
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defer certOut.Close()
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pem.Encode(certOut, &pem.Block{Type: "CERTIFICATE", Bytes: certDER})
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// 写入私钥文件
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keyOut, err := os.Create(keyFile)
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if err != nil {
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return err
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}
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defer keyOut.Close()
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privBytes, err := x509.MarshalECPrivateKey(priv)
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if err != nil {
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return err
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}
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pem.Encode(keyOut, &pem.Block{Type: "EC PRIVATE KEY", Bytes: privBytes})
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return nil
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}
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