github.com/xraypb/xray-core@v1.6.6/common/crypto/chacha20_test.go (about)

     1  package crypto_test
     2  
     3  import (
     4  	"crypto/rand"
     5  	"encoding/hex"
     6  	"testing"
     7  
     8  	"github.com/google/go-cmp/cmp"
     9  	"github.com/xraypb/xray-core/common"
    10  	. "github.com/xraypb/xray-core/common/crypto"
    11  )
    12  
    13  func mustDecodeHex(s string) []byte {
    14  	b, err := hex.DecodeString(s)
    15  	common.Must(err)
    16  	return b
    17  }
    18  
    19  func TestChaCha20Stream(t *testing.T) {
    20  	cases := []struct {
    21  		key    []byte
    22  		iv     []byte
    23  		output []byte
    24  	}{
    25  		{
    26  			key: mustDecodeHex("0000000000000000000000000000000000000000000000000000000000000000"),
    27  			iv:  mustDecodeHex("0000000000000000"),
    28  			output: mustDecodeHex("76b8e0ada0f13d90405d6ae55386bd28bdd219b8a08ded1aa836efcc8b770dc7" +
    29  				"da41597c5157488d7724e03fb8d84a376a43b8f41518a11cc387b669b2ee6586" +
    30  				"9f07e7be5551387a98ba977c732d080dcb0f29a048e3656912c6533e32ee7aed" +
    31  				"29b721769ce64e43d57133b074d839d531ed1f28510afb45ace10a1f4b794d6f"),
    32  		},
    33  		{
    34  			key: mustDecodeHex("5555555555555555555555555555555555555555555555555555555555555555"),
    35  			iv:  mustDecodeHex("5555555555555555"),
    36  			output: mustDecodeHex("bea9411aa453c5434a5ae8c92862f564396855a9ea6e22d6d3b50ae1b3663311" +
    37  				"a4a3606c671d605ce16c3aece8e61ea145c59775017bee2fa6f88afc758069f7" +
    38  				"e0b8f676e644216f4d2a3422d7fa36c6c4931aca950e9da42788e6d0b6d1cd83" +
    39  				"8ef652e97b145b14871eae6c6804c7004db5ac2fce4c68c726d004b10fcaba86"),
    40  		},
    41  		{
    42  			key:    mustDecodeHex("0000000000000000000000000000000000000000000000000000000000000000"),
    43  			iv:     mustDecodeHex("000000000000000000000000"),
    44  			output: mustDecodeHex("76b8e0ada0f13d90405d6ae55386bd28bdd219b8a08ded1aa836efcc8b770dc7da41597c5157488d7724e03fb8d84a376a43b8f41518a11cc387b669b2ee6586"),
    45  		},
    46  	}
    47  	for _, c := range cases {
    48  		s := NewChaCha20Stream(c.key, c.iv)
    49  		input := make([]byte, len(c.output))
    50  		actualOutout := make([]byte, len(c.output))
    51  		s.XORKeyStream(actualOutout, input)
    52  		if r := cmp.Diff(c.output, actualOutout); r != "" {
    53  			t.Fatal(r)
    54  		}
    55  	}
    56  }
    57  
    58  func TestChaCha20Decoding(t *testing.T) {
    59  	key := make([]byte, 32)
    60  	common.Must2(rand.Read(key))
    61  	iv := make([]byte, 8)
    62  	common.Must2(rand.Read(iv))
    63  	stream := NewChaCha20Stream(key, iv)
    64  
    65  	payload := make([]byte, 1024)
    66  	common.Must2(rand.Read(payload))
    67  
    68  	x := make([]byte, len(payload))
    69  	stream.XORKeyStream(x, payload)
    70  
    71  	stream2 := NewChaCha20Stream(key, iv)
    72  	stream2.XORKeyStream(x, x)
    73  	if r := cmp.Diff(x, payload); r != "" {
    74  		t.Fatal(r)
    75  	}
    76  }