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package fasthttp
import (
"crypto/rand"
"crypto/rsa"
"crypto/x509"
"crypto/x509/pkix"
"encoding/pem"
"math/big"
"time"
)
// GenerateTestCertificate generates a test certificate and private key based on the given host.
func GenerateTestCertificate(host string) ([]byte, []byte, error) {
priv, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
return nil, nil, err
}
serialNumberLimit := new(big.Int).Lsh(big.NewInt(1), 128)
serialNumber, err := rand.Int(rand.Reader, serialNumberLimit)
if err != nil {
return nil, nil, err
}
cert := &x509.Certificate{
SerialNumber: serialNumber,
Subject: pkix.Name{
Organization: []string{"fasthttp test"},
},
NotBefore: time.Now(),
NotAfter: time.Now().Add(365 * 24 * time.Hour),
KeyUsage: x509.KeyUsageCertSign | x509.KeyUsageDigitalSignature,
ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth, x509.ExtKeyUsageClientAuth},
SignatureAlgorithm: x509.SHA256WithRSA,
DNSNames: []string{host},
BasicConstraintsValid: true,
IsCA: true,
}
certBytes, err := x509.CreateCertificate(
rand.Reader, cert, cert, &priv.PublicKey, priv,
)
p := pem.EncodeToMemory(
&pem.Block{
Type: "PRIVATE KEY",
Bytes: x509.MarshalPKCS1PrivateKey(priv),
},
)
b := pem.EncodeToMemory(
&pem.Block{
Type: "CERTIFICATE",
Bytes: certBytes,
},
)
return b, p, err
}
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