github.com/Uhtred009/v2ray-core-1@v4.31.2+incompatible/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  
    10  	"v2ray.com/core/common"
    11  	. "v2ray.com/core/common/crypto"
    12  )
    13  
    14  func mustDecodeHex(s string) []byte {
    15  	b, err := hex.DecodeString(s)
    16  	common.Must(err)
    17  	return b
    18  }
    19  
    20  func TestChaCha20Stream(t *testing.T) {
    21  	var cases = []struct {
    22  		key    []byte
    23  		iv     []byte
    24  		output []byte
    25  	}{
    26  		{
    27  			key: mustDecodeHex("0000000000000000000000000000000000000000000000000000000000000000"),
    28  			iv:  mustDecodeHex("0000000000000000"),
    29  			output: mustDecodeHex("76b8e0ada0f13d90405d6ae55386bd28bdd219b8a08ded1aa836efcc8b770dc7" +
    30  				"da41597c5157488d7724e03fb8d84a376a43b8f41518a11cc387b669b2ee6586" +
    31  				"9f07e7be5551387a98ba977c732d080dcb0f29a048e3656912c6533e32ee7aed" +
    32  				"29b721769ce64e43d57133b074d839d531ed1f28510afb45ace10a1f4b794d6f"),
    33  		},
    34  		{
    35  			key: mustDecodeHex("5555555555555555555555555555555555555555555555555555555555555555"),
    36  			iv:  mustDecodeHex("5555555555555555"),
    37  			output: mustDecodeHex("bea9411aa453c5434a5ae8c92862f564396855a9ea6e22d6d3b50ae1b3663311" +
    38  				"a4a3606c671d605ce16c3aece8e61ea145c59775017bee2fa6f88afc758069f7" +
    39  				"e0b8f676e644216f4d2a3422d7fa36c6c4931aca950e9da42788e6d0b6d1cd83" +
    40  				"8ef652e97b145b14871eae6c6804c7004db5ac2fce4c68c726d004b10fcaba86"),
    41  		},
    42  		{
    43  			key:    mustDecodeHex("0000000000000000000000000000000000000000000000000000000000000000"),
    44  			iv:     mustDecodeHex("000000000000000000000000"),
    45  			output: mustDecodeHex("76b8e0ada0f13d90405d6ae55386bd28bdd219b8a08ded1aa836efcc8b770dc7da41597c5157488d7724e03fb8d84a376a43b8f41518a11cc387b669b2ee6586"),
    46  		},
    47  	}
    48  	for _, c := range cases {
    49  		s := NewChaCha20Stream(c.key, c.iv)
    50  		input := make([]byte, len(c.output))
    51  		actualOutout := make([]byte, len(c.output))
    52  		s.XORKeyStream(actualOutout, input)
    53  		if r := cmp.Diff(c.output, actualOutout); r != "" {
    54  			t.Fatal(r)
    55  		}
    56  	}
    57  }
    58  
    59  func TestChaCha20Decoding(t *testing.T) {
    60  	key := make([]byte, 32)
    61  	common.Must2(rand.Read(key))
    62  	iv := make([]byte, 8)
    63  	common.Must2(rand.Read(iv))
    64  	stream := NewChaCha20Stream(key, iv)
    65  
    66  	payload := make([]byte, 1024)
    67  	common.Must2(rand.Read(payload))
    68  
    69  	x := make([]byte, len(payload))
    70  	stream.XORKeyStream(x, payload)
    71  
    72  	stream2 := NewChaCha20Stream(key, iv)
    73  	stream2.XORKeyStream(x, x)
    74  	if r := cmp.Diff(x, payload); r != "" {
    75  		t.Fatal(r)
    76  	}
    77  }