42 lines
1.3 KiB
Go
42 lines
1.3 KiB
Go
package cryptoservice
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import (
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"crypto"
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"crypto/rand"
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"crypto/x509"
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"fmt"
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"time"
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"github.com/theupdateframework/notary/tuf/data"
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"github.com/theupdateframework/notary/tuf/utils"
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)
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// GenerateCertificate generates an X509 Certificate from a template, given a GUN and validity interval
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func GenerateCertificate(rootKey data.PrivateKey, gun data.GUN, startTime, endTime time.Time) (*x509.Certificate, error) {
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signer := rootKey.CryptoSigner()
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if signer == nil {
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return nil, fmt.Errorf("key type not supported for Certificate generation: %s", rootKey.Algorithm())
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}
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return generateCertificate(signer, gun, startTime, endTime)
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}
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func generateCertificate(signer crypto.Signer, gun data.GUN, startTime, endTime time.Time) (*x509.Certificate, error) {
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template, err := utils.NewCertificate(gun.String(), startTime, endTime)
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if err != nil {
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return nil, fmt.Errorf("failed to create the certificate template for: %s (%v)", gun, err)
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}
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derBytes, err := x509.CreateCertificate(rand.Reader, template, template, signer.Public(), signer)
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if err != nil {
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return nil, fmt.Errorf("failed to create the certificate for: %s (%v)", gun, err)
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}
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cert, err := x509.ParseCertificate(derBytes)
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if err != nil {
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return nil, fmt.Errorf("failed to parse the certificate for key: %s (%v)", gun, err)
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}
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return cert, nil
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}
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