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hkdfchachapoly was a construction we came up with. There is no longer any reason to use it. We should instead just use xchacha for the remaining use cases we have. (Symmetrically encrypting the keys in the sdk keys package)
102 lines
3.5 KiB
Go
102 lines
3.5 KiB
Go
package xchacha20poly1305
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import (
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"bytes"
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cr "crypto/rand"
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mr "math/rand"
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"testing"
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)
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// The following test is taken from
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// https://github.com/golang/crypto/blob/master/chacha20poly1305/chacha20poly1305_test.go#L69
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// It requires the below copyright notice, where "this source code" refers to the following function.
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// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found at the bottom of this file.
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func TestRandom(t *testing.T) {
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// Some random tests to verify Open(Seal) == Plaintext
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for i := 0; i < 256; i++ {
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var nonce [24]byte
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var key [32]byte
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al := mr.Intn(128)
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pl := mr.Intn(16384)
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ad := make([]byte, al)
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plaintext := make([]byte, pl)
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cr.Read(key[:])
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cr.Read(nonce[:])
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cr.Read(ad)
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cr.Read(plaintext)
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aead, err := New(key[:])
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if err != nil {
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t.Fatal(err)
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}
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ct := aead.Seal(nil, nonce[:], plaintext, ad)
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plaintext2, err := aead.Open(nil, nonce[:], ct, ad)
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if err != nil {
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t.Errorf("Random #%d: Open failed", i)
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continue
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}
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if !bytes.Equal(plaintext, plaintext2) {
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t.Errorf("Random #%d: plaintext's don't match: got %x vs %x", i, plaintext2, plaintext)
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continue
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}
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if len(ad) > 0 {
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alterAdIdx := mr.Intn(len(ad))
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ad[alterAdIdx] ^= 0x80
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if _, err := aead.Open(nil, nonce[:], ct, ad); err == nil {
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t.Errorf("Random #%d: Open was successful after altering additional data", i)
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}
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ad[alterAdIdx] ^= 0x80
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}
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alterNonceIdx := mr.Intn(aead.NonceSize())
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nonce[alterNonceIdx] ^= 0x80
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if _, err := aead.Open(nil, nonce[:], ct, ad); err == nil {
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t.Errorf("Random #%d: Open was successful after altering nonce", i)
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}
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nonce[alterNonceIdx] ^= 0x80
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alterCtIdx := mr.Intn(len(ct))
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ct[alterCtIdx] ^= 0x80
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if _, err := aead.Open(nil, nonce[:], ct, ad); err == nil {
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t.Errorf("Random #%d: Open was successful after altering ciphertext", i)
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}
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ct[alterCtIdx] ^= 0x80
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}
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}
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// AFOREMENTIONED LICENCE
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// Copyright (c) 2009 The Go Authors. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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