471 lines
15 KiB
Go
471 lines
15 KiB
Go
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// Copyright 2012 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 in the LICENSE file.
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package otr
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import (
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"bufio"
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"bytes"
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"crypto/rand"
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"encoding/hex"
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"math/big"
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"os"
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"os/exec"
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"testing"
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)
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var isQueryTests = []struct {
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msg string
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expectedVersion int
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}{
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{"foo", 0},
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{"?OtR", 0},
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{"?OtR?", 0},
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{"?OTR?", 0},
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{"?OTRv?", 0},
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{"?OTRv1?", 0},
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{"?OTR?v1?", 0},
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{"?OTR?v?", 0},
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{"?OTR?v2?", 2},
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{"?OTRv2?", 2},
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{"?OTRv23?", 2},
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{"?OTRv23 ?", 0},
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}
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func TestIsQuery(t *testing.T) {
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for i, test := range isQueryTests {
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version := isQuery([]byte(test.msg))
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if version != test.expectedVersion {
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t.Errorf("#%d: got %d, want %d", i, version, test.expectedVersion)
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}
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}
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}
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var alicePrivateKeyHex = "000000000080c81c2cb2eb729b7e6fd48e975a932c638b3a9055478583afa46755683e30102447f6da2d8bec9f386bbb5da6403b0040fee8650b6ab2d7f32c55ab017ae9b6aec8c324ab5844784e9a80e194830d548fb7f09a0410df2c4d5c8bc2b3e9ad484e65412be689cf0834694e0839fb2954021521ffdffb8f5c32c14dbf2020b3ce7500000014da4591d58def96de61aea7b04a8405fe1609308d000000808ddd5cb0b9d66956e3dea5a915d9aba9d8a6e7053b74dadb2fc52f9fe4e5bcc487d2305485ed95fed026ad93f06ebb8c9e8baf693b7887132c7ffdd3b0f72f4002ff4ed56583ca7c54458f8c068ca3e8a4dfa309d1dd5d34e2a4b68e6f4338835e5e0fb4317c9e4c7e4806dafda3ef459cd563775a586dd91b1319f72621bf3f00000080b8147e74d8c45e6318c37731b8b33b984a795b3653c2cd1d65cc99efe097cb7eb2fa49569bab5aab6e8a1c261a27d0f7840a5e80b317e6683042b59b6dceca2879c6ffc877a465be690c15e4a42f9a7588e79b10faac11b1ce3741fcef7aba8ce05327a2c16d279ee1b3d77eb783fb10e3356caa25635331e26dd42b8396c4d00000001420bec691fea37ecea58a5c717142f0b804452f57"
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var aliceFingerprintHex = "0bb01c360424522e94ee9c346ce877a1a4288b2f"
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var bobPrivateKeyHex = "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"
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func TestKeySerialization(t *testing.T) {
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var priv PrivateKey
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alicePrivateKey, _ := hex.DecodeString(alicePrivateKeyHex)
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rest, ok := priv.Parse(alicePrivateKey)
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if !ok {
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t.Error("failed to parse private key")
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}
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if len(rest) > 0 {
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t.Error("data remaining after parsing private key")
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}
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out := priv.Serialize(nil)
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if !bytes.Equal(alicePrivateKey, out) {
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t.Errorf("serialization (%x) is not equal to original (%x)", out, alicePrivateKey)
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}
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aliceFingerprint, _ := hex.DecodeString(aliceFingerprintHex)
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fingerprint := priv.PublicKey.Fingerprint()
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if !bytes.Equal(aliceFingerprint, fingerprint) {
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t.Errorf("fingerprint (%x) is not equal to expected value (%x)", fingerprint, aliceFingerprint)
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}
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}
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const libOTRPrivateKey = `(privkeys
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(account
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(name "foo@example.com")
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(protocol prpl-jabber)
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(private-key
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(dsa
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(p #00FC07ABCF0DC916AFF6E9AE47BEF60C7AB9B4D6B2469E436630E36F8A489BE812486A09F30B71224508654940A835301ACC525A4FF133FC152CC53DCC59D65C30A54F1993FE13FE63E5823D4C746DB21B90F9B9C00B49EC7404AB1D929BA7FBA12F2E45C6E0A651689750E8528AB8C031D3561FECEE72EBB4A090D450A9B7A857#)
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(q #00997BD266EF7B1F60A5C23F3A741F2AEFD07A2081#)
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(g #535E360E8A95EBA46A4F7DE50AD6E9B2A6DB785A66B64EB9F20338D2A3E8FB0E94725848F1AA6CC567CB83A1CC517EC806F2E92EAE71457E80B2210A189B91250779434B41FC8A8873F6DB94BEA7D177F5D59E7E114EE10A49CFD9CEF88AE43387023B672927BA74B04EB6BBB5E57597766A2F9CE3857D7ACE3E1E3BC1FC6F26#)
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(y #0AC8670AD767D7A8D9D14CC1AC6744CD7D76F993B77FFD9E39DF01E5A6536EF65E775FCEF2A983E2A19BD6415500F6979715D9FD1257E1FE2B6F5E1E74B333079E7C880D39868462A93454B41877BE62E5EF0A041C2EE9C9E76BD1E12AE25D9628DECB097025DD625EF49C3258A1A3C0FF501E3DC673B76D7BABF349009B6ECF#)
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(x #14D0345A3562C480A039E3C72764F72D79043216#)
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)
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)
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)
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)`
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func TestParseLibOTRPrivateKey(t *testing.T) {
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var priv PrivateKey
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if !priv.Import([]byte(libOTRPrivateKey)) {
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t.Fatalf("Failed to import sample private key")
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}
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}
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func TestSignVerify(t *testing.T) {
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var priv PrivateKey
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alicePrivateKey, _ := hex.DecodeString(alicePrivateKeyHex)
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_, ok := priv.Parse(alicePrivateKey)
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if !ok {
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t.Error("failed to parse private key")
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}
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var msg [32]byte
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rand.Reader.Read(msg[:])
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sig := priv.Sign(rand.Reader, msg[:])
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rest, ok := priv.PublicKey.Verify(msg[:], sig)
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if !ok {
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t.Errorf("signature (%x) of %x failed to verify", sig, msg[:])
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} else if len(rest) > 0 {
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t.Error("signature data remains after verification")
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}
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sig[10] ^= 80
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_, ok = priv.PublicKey.Verify(msg[:], sig)
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if ok {
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t.Errorf("corrupted signature (%x) of %x verified", sig, msg[:])
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}
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}
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func setupConversation(t *testing.T) (alice, bob *Conversation) {
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alicePrivateKey, _ := hex.DecodeString(alicePrivateKeyHex)
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bobPrivateKey, _ := hex.DecodeString(bobPrivateKeyHex)
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alice, bob = new(Conversation), new(Conversation)
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alice.PrivateKey = new(PrivateKey)
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bob.PrivateKey = new(PrivateKey)
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alice.PrivateKey.Parse(alicePrivateKey)
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bob.PrivateKey.Parse(bobPrivateKey)
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alice.FragmentSize = 100
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bob.FragmentSize = 100
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if alice.IsEncrypted() {
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t.Error("Alice believes that the conversation is secure before we've started")
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}
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if bob.IsEncrypted() {
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t.Error("Bob believes that the conversation is secure before we've started")
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}
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performHandshake(t, alice, bob)
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return alice, bob
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}
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func performHandshake(t *testing.T, alice, bob *Conversation) {
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var alicesMessage, bobsMessage [][]byte
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var out []byte
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var aliceChange, bobChange SecurityChange
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var err error
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alicesMessage = append(alicesMessage, []byte(QueryMessage))
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for round := 0; len(alicesMessage) > 0 || len(bobsMessage) > 0; round++ {
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bobsMessage = nil
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for i, msg := range alicesMessage {
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out, _, bobChange, bobsMessage, err = bob.Receive(msg)
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if len(out) > 0 {
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t.Errorf("Bob generated output during key exchange, round %d, message %d", round, i)
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}
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if err != nil {
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t.Fatalf("Bob returned an error, round %d, message %d (%x): %s", round, i, msg, err)
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}
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if len(bobsMessage) > 0 && i != len(alicesMessage)-1 {
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t.Errorf("Bob produced output while processing a fragment, round %d, message %d", round, i)
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}
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}
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alicesMessage = nil
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for i, msg := range bobsMessage {
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out, _, aliceChange, alicesMessage, err = alice.Receive(msg)
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if len(out) > 0 {
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t.Errorf("Alice generated output during key exchange, round %d, message %d", round, i)
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}
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if err != nil {
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t.Fatalf("Alice returned an error, round %d, message %d (%x): %s", round, i, msg, err)
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}
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if len(alicesMessage) > 0 && i != len(bobsMessage)-1 {
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t.Errorf("Alice produced output while processing a fragment, round %d, message %d", round, i)
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}
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}
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}
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if aliceChange != NewKeys {
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t.Errorf("Alice terminated without signaling new keys")
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}
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if bobChange != NewKeys {
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t.Errorf("Bob terminated without signaling new keys")
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}
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if !bytes.Equal(alice.SSID[:], bob.SSID[:]) {
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t.Errorf("Session identifiers don't match. Alice has %x, Bob has %x", alice.SSID[:], bob.SSID[:])
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}
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if !alice.IsEncrypted() {
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t.Error("Alice doesn't believe that the conversation is secure")
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}
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if !bob.IsEncrypted() {
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t.Error("Bob doesn't believe that the conversation is secure")
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}
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}
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const (
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firstRoundTrip = iota
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subsequentRoundTrip
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noMACKeyCheck
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)
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func roundTrip(t *testing.T, alice, bob *Conversation, message []byte, macKeyCheck int) {
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alicesMessage, err := alice.Send(message)
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if err != nil {
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t.Errorf("Error from Alice sending message: %s", err)
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}
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if len(alice.oldMACs) != 0 {
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t.Errorf("Alice has not revealed all MAC keys")
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}
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for i, msg := range alicesMessage {
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out, encrypted, _, _, err := bob.Receive(msg)
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if err != nil {
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t.Errorf("Error generated while processing test message: %s", err.Error())
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}
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if len(out) > 0 {
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if i != len(alicesMessage)-1 {
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t.Fatal("Bob produced a message while processing a fragment of Alice's")
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}
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if !encrypted {
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t.Errorf("Message was not marked as encrypted")
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}
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if !bytes.Equal(out, message) {
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t.Errorf("Message corrupted: got %x, want %x", out, message)
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}
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}
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}
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switch macKeyCheck {
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case firstRoundTrip:
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if len(bob.oldMACs) != 0 {
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t.Errorf("Bob should not have MAC keys to reveal")
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}
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case subsequentRoundTrip:
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if len(bob.oldMACs) != 40 {
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t.Errorf("Bob has %d bytes of MAC keys to reveal, but should have 40", len(bob.oldMACs))
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}
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}
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bobsMessage, err := bob.Send(message)
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if err != nil {
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t.Errorf("Error from Bob sending message: %s", err)
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}
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if len(bob.oldMACs) != 0 {
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t.Errorf("Bob has not revealed all MAC keys")
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}
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for i, msg := range bobsMessage {
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out, encrypted, _, _, err := alice.Receive(msg)
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if err != nil {
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t.Errorf("Error generated while processing test message: %s", err.Error())
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}
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if len(out) > 0 {
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if i != len(bobsMessage)-1 {
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t.Fatal("Alice produced a message while processing a fragment of Bob's")
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}
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if !encrypted {
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t.Errorf("Message was not marked as encrypted")
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}
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if !bytes.Equal(out, message) {
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t.Errorf("Message corrupted: got %x, want %x", out, message)
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}
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}
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}
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switch macKeyCheck {
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case firstRoundTrip:
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if len(alice.oldMACs) != 20 {
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t.Errorf("Alice has %d bytes of MAC keys to reveal, but should have 20", len(alice.oldMACs))
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}
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case subsequentRoundTrip:
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if len(alice.oldMACs) != 40 {
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t.Errorf("Alice has %d bytes of MAC keys to reveal, but should have 40", len(alice.oldMACs))
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}
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}
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}
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func TestConversation(t *testing.T) {
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alice, bob := setupConversation(t)
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var testMessages = [][]byte{
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[]byte("hello"), []byte("bye"),
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}
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roundTripType := firstRoundTrip
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for _, testMessage := range testMessages {
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roundTrip(t, alice, bob, testMessage, roundTripType)
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roundTripType = subsequentRoundTrip
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}
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}
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func TestGoodSMP(t *testing.T) {
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var alice, bob Conversation
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alice.smp.secret = new(big.Int).SetInt64(42)
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bob.smp.secret = alice.smp.secret
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|
|
var alicesMessages, bobsMessages []tlv
|
||
|
|
var aliceComplete, bobComplete bool
|
||
|
|
var err error
|
||
|
|
var out tlv
|
||
|
|
|
||
|
|
alicesMessages = alice.startSMP("")
|
||
|
|
for round := 0; len(alicesMessages) > 0 || len(bobsMessages) > 0; round++ {
|
||
|
|
bobsMessages = bobsMessages[:0]
|
||
|
|
for i, msg := range alicesMessages {
|
||
|
|
out, bobComplete, err = bob.processSMP(msg)
|
||
|
|
if err != nil {
|
||
|
|
t.Errorf("Error from Bob in round %d: %s", round, err)
|
||
|
|
}
|
||
|
|
if bobComplete && i != len(alicesMessages)-1 {
|
||
|
|
t.Errorf("Bob returned a completed signal before processing all of Alice's messages in round %d", round)
|
||
|
|
}
|
||
|
|
if out.typ != 0 {
|
||
|
|
bobsMessages = append(bobsMessages, out)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
alicesMessages = alicesMessages[:0]
|
||
|
|
for i, msg := range bobsMessages {
|
||
|
|
out, aliceComplete, err = alice.processSMP(msg)
|
||
|
|
if err != nil {
|
||
|
|
t.Errorf("Error from Alice in round %d: %s", round, err)
|
||
|
|
}
|
||
|
|
if aliceComplete && i != len(bobsMessages)-1 {
|
||
|
|
t.Errorf("Alice returned a completed signal before processing all of Bob's messages in round %d", round)
|
||
|
|
}
|
||
|
|
if out.typ != 0 {
|
||
|
|
alicesMessages = append(alicesMessages, out)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if !aliceComplete || !bobComplete {
|
||
|
|
t.Errorf("SMP completed without both sides reporting success: alice: %v, bob: %v\n", aliceComplete, bobComplete)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestBadSMP(t *testing.T) {
|
||
|
|
var alice, bob Conversation
|
||
|
|
|
||
|
|
alice.smp.secret = new(big.Int).SetInt64(42)
|
||
|
|
bob.smp.secret = new(big.Int).SetInt64(43)
|
||
|
|
|
||
|
|
var alicesMessages, bobsMessages []tlv
|
||
|
|
|
||
|
|
alicesMessages = alice.startSMP("")
|
||
|
|
for round := 0; len(alicesMessages) > 0 || len(bobsMessages) > 0; round++ {
|
||
|
|
bobsMessages = bobsMessages[:0]
|
||
|
|
for _, msg := range alicesMessages {
|
||
|
|
out, complete, _ := bob.processSMP(msg)
|
||
|
|
if complete {
|
||
|
|
t.Errorf("Bob signaled completion in round %d", round)
|
||
|
|
}
|
||
|
|
if out.typ != 0 {
|
||
|
|
bobsMessages = append(bobsMessages, out)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
alicesMessages = alicesMessages[:0]
|
||
|
|
for _, msg := range bobsMessages {
|
||
|
|
out, complete, _ := alice.processSMP(msg)
|
||
|
|
if complete {
|
||
|
|
t.Errorf("Alice signaled completion in round %d", round)
|
||
|
|
}
|
||
|
|
if out.typ != 0 {
|
||
|
|
alicesMessages = append(alicesMessages, out)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestRehandshaking(t *testing.T) {
|
||
|
|
alice, bob := setupConversation(t)
|
||
|
|
roundTrip(t, alice, bob, []byte("test"), firstRoundTrip)
|
||
|
|
roundTrip(t, alice, bob, []byte("test 2"), subsequentRoundTrip)
|
||
|
|
roundTrip(t, alice, bob, []byte("test 3"), subsequentRoundTrip)
|
||
|
|
roundTrip(t, alice, bob, []byte("test 4"), subsequentRoundTrip)
|
||
|
|
roundTrip(t, alice, bob, []byte("test 5"), subsequentRoundTrip)
|
||
|
|
roundTrip(t, alice, bob, []byte("test 6"), subsequentRoundTrip)
|
||
|
|
roundTrip(t, alice, bob, []byte("test 7"), subsequentRoundTrip)
|
||
|
|
roundTrip(t, alice, bob, []byte("test 8"), subsequentRoundTrip)
|
||
|
|
performHandshake(t, alice, bob)
|
||
|
|
roundTrip(t, alice, bob, []byte("test"), noMACKeyCheck)
|
||
|
|
roundTrip(t, alice, bob, []byte("test 2"), noMACKeyCheck)
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestAgainstLibOTR(t *testing.T) {
|
||
|
|
// This test requires otr.c.test to be built as /tmp/a.out.
|
||
|
|
// If enabled, this tests runs forever performing OTR handshakes in a
|
||
|
|
// loop.
|
||
|
|
return
|
||
|
|
|
||
|
|
alicePrivateKey, _ := hex.DecodeString(alicePrivateKeyHex)
|
||
|
|
var alice Conversation
|
||
|
|
alice.PrivateKey = new(PrivateKey)
|
||
|
|
alice.PrivateKey.Parse(alicePrivateKey)
|
||
|
|
|
||
|
|
cmd := exec.Command("/tmp/a.out")
|
||
|
|
cmd.Stderr = os.Stderr
|
||
|
|
|
||
|
|
out, err := cmd.StdinPipe()
|
||
|
|
if err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
defer out.Close()
|
||
|
|
stdout, err := cmd.StdoutPipe()
|
||
|
|
if err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
in := bufio.NewReader(stdout)
|
||
|
|
|
||
|
|
if err := cmd.Start(); err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
|
||
|
|
out.Write([]byte(QueryMessage))
|
||
|
|
out.Write([]byte("\n"))
|
||
|
|
var expectedText = []byte("test message")
|
||
|
|
|
||
|
|
for {
|
||
|
|
line, isPrefix, err := in.ReadLine()
|
||
|
|
if isPrefix {
|
||
|
|
t.Fatal("line from subprocess too long")
|
||
|
|
}
|
||
|
|
if err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
text, encrypted, change, alicesMessage, err := alice.Receive(line)
|
||
|
|
if err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
}
|
||
|
|
for _, msg := range alicesMessage {
|
||
|
|
out.Write(msg)
|
||
|
|
out.Write([]byte("\n"))
|
||
|
|
}
|
||
|
|
if change == NewKeys {
|
||
|
|
alicesMessage, err := alice.Send([]byte("Go -> libotr test message"))
|
||
|
|
if err != nil {
|
||
|
|
t.Fatalf("error sending message: %s", err.Error())
|
||
|
|
} else {
|
||
|
|
for _, msg := range alicesMessage {
|
||
|
|
out.Write(msg)
|
||
|
|
out.Write([]byte("\n"))
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if len(text) > 0 {
|
||
|
|
if !bytes.Equal(text, expectedText) {
|
||
|
|
t.Fatalf("expected %x, but got %x", expectedText, text)
|
||
|
|
}
|
||
|
|
if !encrypted {
|
||
|
|
t.Fatal("message wasn't encrypted")
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|