go/src/crypto/x509/sec1.go

const ecPrivKeyVersion …

type ecPrivateKey …

// ParseECPrivateKey parses an EC private key in SEC 1, ASN.1 DER form.
//
// This kind of key is commonly encoded in PEM blocks of type "EC PRIVATE KEY".
func ParseECPrivateKey(der []byte) (*ecdsa.PrivateKey, error) { … }

// MarshalECPrivateKey converts an EC private key to SEC 1, ASN.1 DER form.
//
// This kind of key is commonly encoded in PEM blocks of type "EC PRIVATE KEY".
// For a more flexible key format which is not EC specific, use
// [MarshalPKCS8PrivateKey].
func MarshalECPrivateKey(key *ecdsa.PrivateKey) ([]byte, error) { … }

// marshalECPrivateKeyWithOID marshals an EC private key into ASN.1, DER format and
// sets the curve ID to the given OID, or omits it if OID is nil.
func marshalECPrivateKeyWithOID(key *ecdsa.PrivateKey, oid asn1.ObjectIdentifier) ([]byte, error) { … }

// marshalECDHPrivateKey marshals an EC private key into ASN.1, DER format
// suitable for NIST curves.
func marshalECDHPrivateKey(key *ecdh.PrivateKey) ([]byte, error) { … }

// parseECPrivateKey parses an ASN.1 Elliptic Curve Private Key Structure.
// The OID for the named curve may be provided from another source (such as
// the PKCS8 container) - if it is provided then use this instead of the OID
// that may exist in the EC private key structure.
func parseECPrivateKey(namedCurveOID *asn1.ObjectIdentifier, der []byte) (key *ecdsa.PrivateKey, err error) { … }