github.com/Team-Kujira/tendermint@v0.34.24-indexer/crypto/xchacha20poly1305/xchachapoly_test.go (about)

     1  package xchacha20poly1305
     2  
     3  import (
     4  	"bytes"
     5  	cr "crypto/rand"
     6  	mr "math/rand"
     7  	"testing"
     8  )
     9  
    10  // The following test is taken from
    11  // https://github.com/golang/crypto/blob/master/chacha20poly1305/chacha20poly1305_test.go#L69
    12  // It requires the below copyright notice, where "this source code" refers to the following function.
    13  // Copyright 2016 The Go Authors. All rights reserved.
    14  // Use of this source code is governed by a BSD-style
    15  // license that can be found at the bottom of this file.
    16  func TestRandom(t *testing.T) {
    17  	// Some random tests to verify Open(Seal) == Plaintext
    18  	for i := 0; i < 256; i++ {
    19  		var nonce [24]byte
    20  		var key [32]byte
    21  
    22  		al := mr.Intn(128)
    23  		pl := mr.Intn(16384)
    24  		ad := make([]byte, al)
    25  		plaintext := make([]byte, pl)
    26  		_, err := cr.Read(key[:])
    27  		if err != nil {
    28  			t.Errorf("error on read: %v", err)
    29  		}
    30  		_, err = cr.Read(nonce[:])
    31  		if err != nil {
    32  			t.Errorf("error on read: %v", err)
    33  		}
    34  		_, err = cr.Read(ad)
    35  		if err != nil {
    36  			t.Errorf("error on read: %v", err)
    37  		}
    38  		_, err = cr.Read(plaintext)
    39  		if err != nil {
    40  			t.Errorf("error on read: %v", err)
    41  		}
    42  
    43  		aead, err := New(key[:])
    44  		if err != nil {
    45  			t.Fatal(err)
    46  		}
    47  
    48  		ct := aead.Seal(nil, nonce[:], plaintext, ad)
    49  
    50  		plaintext2, err := aead.Open(nil, nonce[:], ct, ad)
    51  		if err != nil {
    52  			t.Errorf("random #%d: Open failed", i)
    53  			continue
    54  		}
    55  
    56  		if !bytes.Equal(plaintext, plaintext2) {
    57  			t.Errorf("random #%d: plaintext's don't match: got %x vs %x", i, plaintext2, plaintext)
    58  			continue
    59  		}
    60  
    61  		if len(ad) > 0 {
    62  			alterAdIdx := mr.Intn(len(ad))
    63  			ad[alterAdIdx] ^= 0x80
    64  			if _, err := aead.Open(nil, nonce[:], ct, ad); err == nil {
    65  				t.Errorf("random #%d: Open was successful after altering additional data", i)
    66  			}
    67  			ad[alterAdIdx] ^= 0x80
    68  		}
    69  
    70  		alterNonceIdx := mr.Intn(aead.NonceSize())
    71  		nonce[alterNonceIdx] ^= 0x80
    72  		if _, err := aead.Open(nil, nonce[:], ct, ad); err == nil {
    73  			t.Errorf("random #%d: Open was successful after altering nonce", i)
    74  		}
    75  		nonce[alterNonceIdx] ^= 0x80
    76  
    77  		alterCtIdx := mr.Intn(len(ct))
    78  		ct[alterCtIdx] ^= 0x80
    79  		if _, err := aead.Open(nil, nonce[:], ct, ad); err == nil {
    80  			t.Errorf("random #%d: Open was successful after altering ciphertext", i)
    81  		}
    82  		ct[alterCtIdx] ^= 0x80
    83  	}
    84  }
    85  
    86  // AFOREMENTIONED LICENSE
    87  // Copyright (c) 2009 The Go Authors. All rights reserved.
    88  //
    89  // Redistribution and use in source and binary forms, with or without
    90  // modification, are permitted provided that the following conditions are
    91  // met:
    92  //
    93  //    * Redistributions of source code must retain the above copyright
    94  // notice, this list of conditions and the following disclaimer.
    95  //    * Redistributions in binary form must reproduce the above
    96  // copyright notice, this list of conditions and the following disclaimer
    97  // in the documentation and/or other materials provided with the
    98  // distribution.
    99  //    * Neither the name of Google Inc. nor the names of its
   100  // contributors may be used to endorse or promote products derived from
   101  // this software without specific prior written permission.
   102  //
   103  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   104  // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   105  // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   106  // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   107  // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   108  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   109  // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   110  // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   111  // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   112  // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   113  // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.