github.com/Asutorufa/yuhaiin@v0.3.6-0.20240502055049-7984da7023a0/pkg/net/proxy/reality/reality_test.go (about)

     1  package reality
     2  
     3  import (
     4  	"crypto/rand"
     5  	"encoding/base64"
     6  	"encoding/hex"
     7  	"errors"
     8  	"fmt"
     9  	"testing"
    10  
    11  	"github.com/Asutorufa/yuhaiin/pkg/utils/assert"
    12  	"golang.org/x/crypto/curve25519"
    13  )
    14  
    15  func TestHexDecode(t *testing.T) {
    16  
    17  	var input_base64 string
    18  
    19  	var err error
    20  	var privateKey []byte
    21  	var publicKey []byte
    22  	if len(input_base64) > 0 {
    23  		privateKey, err = base64.RawURLEncoding.DecodeString(input_base64)
    24  		if err != nil {
    25  			assert.NoError(t, err)
    26  		}
    27  		if len(privateKey) != curve25519.ScalarSize {
    28  			assert.NoError(t, errors.New("Invalid length of private key."))
    29  		}
    30  	}
    31  
    32  	if privateKey == nil {
    33  		privateKey = make([]byte, curve25519.ScalarSize)
    34  		if _, err = rand.Read(privateKey); err != nil {
    35  			assert.NoError(t, err)
    36  		}
    37  	}
    38  
    39  	// Modify random bytes using algorithm described at:
    40  	// https://cr.yp.to/ecdh.html.
    41  	privateKey[0] &= 248
    42  	privateKey[31] &= 127
    43  	privateKey[31] |= 64
    44  
    45  	if publicKey, err = curve25519.X25519(privateKey, curve25519.Basepoint); err != nil {
    46  		assert.NoError(t, err)
    47  	}
    48  
    49  	fmt.Printf("Private key: %v\nPublic key: %v",
    50  		base64.RawURLEncoding.EncodeToString(privateKey),
    51  		base64.RawURLEncoding.EncodeToString(publicKey))
    52  
    53  	t.Log(hex.DecodeString(""))
    54  }