go/src/crypto/x509/pkcs8.go

type pkcs8 …

// ParsePKCS8PrivateKey parses an unencrypted private key in PKCS #8, ASN.1 DER form.
//
// It returns a *[rsa.PrivateKey], an *[ecdsa.PrivateKey], an [ed25519.PrivateKey] (not
// a pointer), or an *[ecdh.PrivateKey] (for X25519). More types might be supported
// in the future.
//
// This kind of key is commonly encoded in PEM blocks of type "PRIVATE KEY".
func ParsePKCS8PrivateKey(der []byte) (key any, err error) { … }

// MarshalPKCS8PrivateKey converts a private key to PKCS #8, ASN.1 DER form.
//
// The following key types are currently supported: *[rsa.PrivateKey],
// *[ecdsa.PrivateKey], [ed25519.PrivateKey] (not a pointer), and *[ecdh.PrivateKey].
// Unsupported key types result in an error.
//
// This kind of key is commonly encoded in PEM blocks of type "PRIVATE KEY".
func MarshalPKCS8PrivateKey(key any) ([]byte, error) { … }