sigAlgs = []SignatureScheme{
				ECDSAWithP256AndSHA256,
				ECDSAWithP384AndSHA384,
				ECDSAWithP521AndSHA512,
				ECDSAWithSHA1,
			}
			break
		}
		switch pub.Curve {
		case elliptic.P256():
			sigAlgs = []SignatureScheme{ECDSAWithP256AndSHA256}
		case elliptic.P384():
			sigAlgs = []SignatureScheme{ECDSAWithP384AndSHA384}
		case elliptic.P521():
			sigAlgs = []SignatureScheme{ECDSAWithP521AndSHA512}

// SupportedEllipticCurves are the types of curves
// to be used in key generation (e.g. P256, P384)
type SupportedEllipticCurves string

const (
	// only ECDSA is currently supported
	EcdsaSigAlg SupportedECSignatureAlgorithms = "ECDSA"

	// supported curves when using ECC
	P256Curve SupportedEllipticCurves = "P256"
	P384Curve SupportedEllipticCurves = "P384"
)

	}
}

type p256Curve struct {
	nistCurve[*nistec.P256Point]
}

var p256 = &p256Curve{nistCurve[*nistec.P256Point]{
	newPoint: nistec.NewP256Point,
}}

func initP256() {
	p256.params = &CurveParams{
		Name:    "P-256",
		BitSize: 256,
		// FIPS 186-4, section D.1.2.3
		P:  bigFromDecimal("115792089210356248762697446949407573530086143415290314195533631308867097853951"),

	if options.ECSigAlg != "" {
		switch options.ECSigAlg {
		case EcdsaSigAlg:
			var curve elliptic.Curve
			switch options.ECCCurve {
			case P384Curve:
				curve = elliptic.P384()
			default:
				curve = elliptic.P256()
			}
			priv, err = ecdsa.GenerateKey(curve, rand.Reader)
			if err != nil {
				return nil, nil, fmt.Errorf("EC key generation failed (%v)", err)
			}
		default:

	R2 := testBoringCert(t, "R2", boringRSAKey(t, 512), nil, boringCertCA)
	R3 := testBoringCert(t, "R3", boringRSAKey(t, 4096), nil, boringCertCA|boringCertFIPSOK)

	M1_R1 := testBoringCert(t, "M1_R1", boringECDSAKey(t, elliptic.P256()), R1, boringCertCA|boringCertFIPSOK)
	M2_R1 := testBoringCert(t, "M2_R1", boringECDSAKey(t, elliptic.P224()), R1, boringCertCA)

	I_R1 := testBoringCert(t, "I_R1", boringRSAKey(t, 3072), R1, boringCertCA|boringCertFIPSOK)

		if key.Crv == "" || key.X == "" || key.Y == "" {
			return nil, errMalformedJWKECKey
		}

		var curve elliptic.Curve
		switch key.Crv {
		case "P-224":
			curve = elliptic.P224()
		case "P-256":
			curve = elliptic.P256()
		case "P-384":
			curve = elliptic.P384()
		case "P-521":
			curve = elliptic.P521()
		default:
			return nil, fmt.Errorf("Unknown curve type: %s", key.Crv)
		}

	testDir, err := os.MkdirTemp("", "kubeletcert")
	if err != nil {
		t.Fatal(err)
	}
	defer func() { os.RemoveAll(testDir) }()

	serverPrivateKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
	if err != nil {
		t.Fatal(err)
	}
	serverCA, err := certutil.NewSelfSignedCACert(certutil.Config{
		CommonName: "the-test-framework",
	}, serverPrivateKey)
	if err != nil {
		t.Fatal(err)
	}

			keyHex:  pkcs8P224PrivateKeyHex,
			keyType: reflect.TypeOf(&ecdsa.PrivateKey{}),
			curve:   elliptic.P224(),
		},
		{
			name:    "P-256 private key",
			keyHex:  pkcs8P256PrivateKeyHex,
			keyType: reflect.TypeOf(&ecdsa.PrivateKey{}),
			curve:   elliptic.P256(),
		},
		{
			name:    "P-384 private key",
			keyHex:  pkcs8P384PrivateKeyHex,
			keyType: reflect.TypeOf(&ecdsa.PrivateKey{}),

		IsCA:                  true,
		BasicConstraintsValid: true,
		NotBefore:             time.Now().Add(-time.Hour),
		NotAfter:              time.Now().Add(time.Hour * 10),
	}
	k, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
	if err != nil {
		t.Fatalf("failed to generate test key: %s", err)
	}
	rootDER, err := x509.CreateCertificate(rand.Reader, rootTmpl, rootTmpl, k.Public(), k)
	if err != nil {

// license that can be found in the LICENSE file.

//go:build !purego

// This file contains constant-time, 64-bit assembly implementation of
// P256. The optimizations performed here are described in detail in:
// S.Gueron and V.Krasnov, "Fast prime field elliptic-curve cryptography with
//                          256-bit primes"
// https://link.springer.com/article/10.1007%2Fs13389-014-0090-x
// https://eprint.iacr.org/2013/816.pdf

#include "textflag.h"