github.com/graybobo/golang.org-package-offline-cache@v0.0.0-20200626051047-6608995c132f/x/crypto/nacl/box/box_test.go (about)

     1  // Copyright 2012 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package box
     6  
     7  import (
     8  	"bytes"
     9  	"crypto/rand"
    10  	"encoding/hex"
    11  	"testing"
    12  
    13  	"golang.org/x/crypto/curve25519"
    14  )
    15  
    16  func TestSealOpen(t *testing.T) {
    17  	publicKey1, privateKey1, _ := GenerateKey(rand.Reader)
    18  	publicKey2, privateKey2, _ := GenerateKey(rand.Reader)
    19  
    20  	if *privateKey1 == *privateKey2 {
    21  		t.Fatalf("private keys are equal!")
    22  	}
    23  	if *publicKey1 == *publicKey2 {
    24  		t.Fatalf("public keys are equal!")
    25  	}
    26  	message := []byte("test message")
    27  	var nonce [24]byte
    28  
    29  	box := Seal(nil, message, &nonce, publicKey1, privateKey2)
    30  	opened, ok := Open(nil, box, &nonce, publicKey2, privateKey1)
    31  	if !ok {
    32  		t.Fatalf("failed to open box")
    33  	}
    34  
    35  	if !bytes.Equal(opened, message) {
    36  		t.Fatalf("got %x, want %x", opened, message)
    37  	}
    38  
    39  	for i := range box {
    40  		box[i] ^= 0x40
    41  		_, ok := Open(nil, box, &nonce, publicKey2, privateKey1)
    42  		if ok {
    43  			t.Fatalf("opened box with byte %d corrupted", i)
    44  		}
    45  		box[i] ^= 0x40
    46  	}
    47  }
    48  
    49  func TestBox(t *testing.T) {
    50  	var privateKey1, privateKey2 [32]byte
    51  	for i := range privateKey1[:] {
    52  		privateKey1[i] = 1
    53  	}
    54  	for i := range privateKey2[:] {
    55  		privateKey2[i] = 2
    56  	}
    57  
    58  	var publicKey1 [32]byte
    59  	curve25519.ScalarBaseMult(&publicKey1, &privateKey1)
    60  	var message [64]byte
    61  	for i := range message[:] {
    62  		message[i] = 3
    63  	}
    64  
    65  	var nonce [24]byte
    66  	for i := range nonce[:] {
    67  		nonce[i] = 4
    68  	}
    69  
    70  	box := Seal(nil, message[:], &nonce, &publicKey1, &privateKey2)
    71  
    72  	// expected was generated using the C implementation of NaCl.
    73  	expected, _ := hex.DecodeString("78ea30b19d2341ebbdba54180f821eec265cf86312549bea8a37652a8bb94f07b78a73ed1708085e6ddd0e943bbdeb8755079a37eb31d86163ce241164a47629c0539f330b4914cd135b3855bc2a2dfc")
    74  
    75  	if !bytes.Equal(box, expected) {
    76  		t.Fatalf("box didn't match, got\n%x\n, expected\n%x", box, expected)
    77  	}
    78  }