func (curve *nistCurve[Point]) pointToAffine(p Point) (x, y *big.Int, err error) {
	out := p.Bytes()
	if len(out) == 1 && out[0] == 0 {
		// This is the encoding of the point at infinity.
		return nil, nil, errors.New("ecdsa: public key point is the infinity")
	}
	byteLen := (curve.curve.Params().BitSize + 7) / 8
	x = new(big.Int).SetBytes(out[1 : 1+byteLen])
	y = new(big.Int).SetBytes(out[1+byteLen:])
	return x, y, nil
}

package openid

import (
	"crypto"
	"crypto/ecdsa"
	"crypto/ed25519"
	"crypto/elliptic"
	"crypto/rsa"
	"encoding/base64"
	"errors"
	"fmt"
	"math/big"
)

// JWKS - https://tools.ietf.org/html/rfc7517
type JWKS struct {
	Keys []*JWKS `json:"keys,omitempty"`

	Kty string `json:"kty"`
	Use string `json:"use,omitempty"`
	Kid string `json:"kid,omitempty"`

	}
}

func bigFromString(s string) *big.Int {
	ret := new(big.Int)
	ret.SetString(s, 10)
	return ret
}

func fromBase10(base10 string) *big.Int {
	i := new(big.Int)
	i.SetString(base10, 10)
	return i
}

func bigFromHexString(s string) *big.Int {
	ret := new(big.Int)
	ret.SetString(s, 16)
	return ret
}

var rsaPrivateKey = &rsa.PrivateKey{

	switch runtime.GOOS {
	case "android", "plan9", "windows", "wasip1":
		t.Skipf("not supported on %s", runtime.GOOS)
	}
	filename := "/etc/services" // a nice big file

	fd, err := os.Open(filename)
	if err != nil {
		// The file is missing even on some Unix systems.
		t.Skipf("skipping because failed to open /etc/services: %v", err)
	}
	defer fd.Close()

// Bigger than we need, not too big to worry about overflow
const big = 0xFFFFFF

// Decimal to integer.
// Returns number, characters consumed, success.
func dtoi(s string) (n int, i int, ok bool) {
	n = 0
	for i = 0; i < len(s) && '0' <= s[i] && s[i] <= '9'; i++ {
		n = n*10 + int(s[i]-'0')
		if n >= big {
			return big, i, false
		}
	}
	if i == 0 {
		return 0, 0, false
	}

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

package x509_test

import (
	"crypto/ecdsa"
	"crypto/elliptic"
	"crypto/rand"
	"crypto/tls"
	"crypto/x509"
	"crypto/x509/pkix"
	"internal/testenv"
	"math/big"
	"runtime"
	"testing"
	"time"
)

func TestHybridPool(t *testing.T) {
	t.Parallel()
	if !(runtime.GOOS == "windows" || runtime.GOOS == "darwin" || runtime.GOOS == "ios") {

// effect.
func (z *Float) UnmarshalText(text []byte) error {
	// TODO(gri): get rid of the []byte/string conversion
	_, _, err := z.Parse(string(text), 0)
	if err != nil {
		err = fmt.Errorf("math/big: cannot unmarshal %q into a *big.Float (%v)", text, err)
	}
	return err

func TestLittleEndianPtrWrite(t *testing.T) { testWrite(t, LittleEndian, little, &s) }

func TestBigEndianRead(t *testing.T)     { testRead(t, BigEndian, big, s) }
func TestBigEndianWrite(t *testing.T)    { testWrite(t, BigEndian, big, s) }
func TestBigEndianPtrWrite(t *testing.T) { testWrite(t, BigEndian, big, &s) }

func TestReadSlice(t *testing.T) {
	t.Run("Read", func(t *testing.T) {
		slice := make([]int32, 2)

	}

	if r0.Cmp(r1) == 0 {
		t.Errorf("two signatures of the same message produced the same nonce")
	}
}

func fromHex(s string) *big.Int {
	r, ok := new(big.Int).SetString(s, 16)
	if !ok {
		panic("bad hex")
	}
	return r
}

func TestVectors(t *testing.T) {
	// This test runs the full set of NIST test vectors from

const streamBufferSize = 32 * BlockSize

type aesctr struct {
	block   *aesCipherAsm          // block cipher
	ctr     [2]uint64              // next value of the counter (big endian)
	buffer  []byte                 // buffer for the encrypted counter values
	storage [streamBufferSize]byte // array backing buffer slice
}

// NewCTR returns a Stream which encrypts/decrypts using the AES block