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full_conversation_test.go
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full_conversation_test.go
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package otr3
import (
"crypto/rand"
"math/big"
"testing"
"time"
)
func Test_conversation_SMPStateMachineStartsAtSmpExpect1(t *testing.T) {
c := newConversation(otrV3{}, fixtureRand())
assertEquals(t, c.smp.state, smpStateExpect1{})
}
func Test_receive_generatesErrorIfDoesNotHaveASecureChannel(t *testing.T) {
states := []msgState{
plainText, finished,
}
c := bobContextAfterAKE()
c.msgState = encrypted
smpMsg := fixtureMessage1()
dataMsg, _, _ := c.genDataMsg(nil, smpMsg.tlv())
m := dataMsg.serialize(c.version)
m, _ = c.wrapMessageHeader(msgTypeData, m)
for _, s := range states {
c.msgState = s
c.expectMessageEvent(t, func() {
_, _, err := c.receiveDecoded(m)
assertEquals(t, err, errMessageNotInPrivate)
}, MessageEventReceivedMessageNotInPrivate, nil, nil)
}
}
func Test_receive_doesntGenerateErrorIfThereIsNoSecureChannelButTheMessageIsIGNORE_UNREADABLE(t *testing.T) {
states := []msgState{
plainText, finished,
}
c := bobContextAfterAKE()
c.msgState = encrypted
smpMsg := fixtureMessage1()
dataMsg, _, _ := c.genDataMsgWithFlag(nil, messageFlagIgnoreUnreadable, smpMsg.tlv())
m, _ := c.wrapMessageHeader(msgTypeData, dataMsg.serialize(c.version))
for _, s := range states {
c.msgState = s
_, _, err := c.receiveDecoded(m)
assertNil(t, err)
}
}
func Test_AKE_forVersion3And2InThePolicy(t *testing.T) {
alice := &Conversation{Rand: rand.Reader}
alice.SetOurKeys([]PrivateKey{alicePrivateKey})
alice.ourCurrentKey = alicePrivateKey
alice.Policies = policies(allowV2 | allowV3)
bob := &Conversation{Rand: rand.Reader}
bob.SetOurKeys([]PrivateKey{bobPrivateKey})
bob.ourCurrentKey = bobPrivateKey
bob.Policies = policies(allowV2 | allowV3)
var toSend []ValidMessage
var err error
msg := alice.QueryMessage()
//Alice send Bob queryMsg
_, toSend, err = bob.Receive(msg)
assertEquals(t, err, nil)
assertEquals(t, bob.ake.state, authStateAwaitingDHKey{})
//Bob send Alice DHCommit
_, toSend, err = alice.Receive(toSend[0])
assertEquals(t, alice.ake.state, authStateAwaitingRevealSig{})
assertEquals(t, err, nil)
//Alice send Bob DHKey
_, toSend, err = bob.Receive(toSend[0])
m, _ := decode(encodedMessage(toSend[0]))
assertEquals(t, err, nil)
assertDeepEquals(t, bob.ake.state, authStateAwaitingSig{revealSigMsg: m})
//Bob send Alice RevealSig
_, toSend, err = alice.Receive(toSend[0])
assertEquals(t, err, nil)
assertEquals(t, alice.ake.state, authStateNone{})
//Alice send Bob Sig
_, _, err = bob.Receive(toSend[0])
assertEquals(t, err, nil)
assertEquals(t, bob.ake.state, authStateNone{})
// "When starting a private Conversation [...],
// generate two DH key pairs for yourself, and set our_keyid = 2"
assertEquals(t, alice.keys.ourKeyID, uint32(2))
assertEquals(t, new(big.Int).SetBytes([]byte(alice.keys.ourCurrentDHKeys.priv)).BitLen() > 0, true)
assertEquals(t, alice.keys.ourCurrentDHKeys.pub.BitLen() > 0, true)
assertEquals(t, new(big.Int).SetBytes([]byte(alice.keys.ourPreviousDHKeys.priv)).BitLen() > 0, true)
assertEquals(t, alice.keys.ourPreviousDHKeys.pub.BitLen() > 0, true)
assertEquals(t, bob.keys.ourKeyID, uint32(2))
assertEquals(t, new(big.Int).SetBytes([]byte(bob.keys.ourCurrentDHKeys.priv)).BitLen() > 0, true)
assertEquals(t, bob.keys.ourCurrentDHKeys.pub.BitLen() > 0, true)
assertEquals(t, new(big.Int).SetBytes([]byte(bob.keys.ourPreviousDHKeys.priv)).BitLen() > 0, true)
assertEquals(t, bob.keys.ourPreviousDHKeys.pub.BitLen() > 0, true)
}
func Test_AKE_withVersion3ButWithoutVersion2InThePolicy(t *testing.T) {
alice := &Conversation{Rand: rand.Reader}
alice.SetOurKeys([]PrivateKey{alicePrivateKey})
alice.ourCurrentKey = alicePrivateKey
alice.Policies = policies(allowV3)
bob := &Conversation{Rand: rand.Reader}
bob.SetOurKeys([]PrivateKey{bobPrivateKey})
bob.ourCurrentKey = bobPrivateKey
bob.Policies = policies(allowV3)
var toSend []ValidMessage
var err error
msg := alice.QueryMessage()
//Alice send Bob queryMsg
_, toSend, err = bob.Receive(msg)
assertEquals(t, err, nil)
assertEquals(t, bob.ake.state, authStateAwaitingDHKey{})
//Bob send Alice DHCommit
_, toSend, err = alice.Receive(toSend[0])
assertEquals(t, alice.ake.state, authStateAwaitingRevealSig{})
assertEquals(t, err, nil)
//Alice send Bob DHKey
_, toSend, err = bob.Receive(toSend[0])
m, _ := decode(encodedMessage(toSend[0]))
assertEquals(t, err, nil)
assertDeepEquals(t, bob.ake.state, authStateAwaitingSig{revealSigMsg: m})
//Bob send Alice RevealSig
_, toSend, err = alice.Receive(toSend[0])
assertEquals(t, err, nil)
assertEquals(t, alice.ake.state, authStateNone{})
//Alice send Bob Sig
_, _, err = bob.Receive(toSend[0])
assertEquals(t, err, nil)
assertEquals(t, bob.ake.state, authStateNone{})
// "When starting a private Conversation [...],
// generate two DH key pairs for yourself, and set our_keyid = 2"
assertEquals(t, alice.keys.ourKeyID, uint32(2))
assertEquals(t, new(big.Int).SetBytes([]byte(alice.keys.ourCurrentDHKeys.priv)).BitLen() > 0, true)
assertEquals(t, alice.keys.ourCurrentDHKeys.pub.BitLen() > 0, true)
assertEquals(t, new(big.Int).SetBytes([]byte(alice.keys.ourPreviousDHKeys.priv)).BitLen() > 0, true)
assertEquals(t, alice.keys.ourPreviousDHKeys.pub.BitLen() > 0, true)
assertEquals(t, bob.keys.ourKeyID, uint32(2))
assertEquals(t, new(big.Int).SetBytes([]byte(bob.keys.ourCurrentDHKeys.priv)).BitLen() > 0, true)
assertEquals(t, bob.keys.ourCurrentDHKeys.pub.BitLen() > 0, true)
assertEquals(t, new(big.Int).SetBytes([]byte(bob.keys.ourPreviousDHKeys.priv)).BitLen() > 0, true)
assertEquals(t, bob.keys.ourPreviousDHKeys.pub.BitLen() > 0, true)
}
func Test_processDataMessageShouldExtractData(t *testing.T) {
var toSend []ValidMessage
var err error
alice := &Conversation{Rand: rand.Reader}
alice.Policies = policies(allowV2 | allowV3)
alice.SetOurKeys([]PrivateKey{alicePrivateKey})
bob := &Conversation{Rand: rand.Reader}
bob.Policies = policies(allowV2 | allowV3)
bob.SetOurKeys([]PrivateKey{bobPrivateKey})
msg := []byte("?OTRv3?")
//Alice send Bob queryMsg
_, toSend, err = bob.Receive(msg)
assertNil(t, err)
assertEquals(t, bob.ake.state, authStateAwaitingDHKey{})
assertEquals(t, bob.version, otrV3{})
//Bob send Alice DHCommit
_, toSend, err = alice.Receive(toSend[0])
assertEquals(t, alice.ake.state, authStateAwaitingRevealSig{})
assertNil(t, err)
//Alice send Bob DHKey
_, toSend, err = bob.Receive(toSend[0])
m, _ := decode(encodedMessage(toSend[0]))
assertNil(t, err)
assertDeepEquals(t, bob.ake.state, authStateAwaitingSig{revealSigMsg: m})
//Bob send Alice RevealSig
_, toSend, err = alice.Receive(toSend[0])
assertNil(t, err)
assertEquals(t, alice.ake.state, authStateNone{})
//Alice send Bob Sig
_, _, err = bob.Receive(toSend[0])
assertNil(t, err)
assertEquals(t, bob.ake.state, authStateNone{})
// Alice sends a message to bob
msg = []byte("hello")
dataMsg, _, _ := alice.genDataMsg(msg)
m, _ = alice.wrapMessageHeader(msgTypeData, dataMsg.serialize(alice.version))
bob.updateLastSent()
plain, ret, err := bob.receiveDecoded(m)
assertNil(t, err)
assertDeepEquals(t, plain, MessagePlaintext(msg))
assertNil(t, ret)
}
func Test_startingAKE_shouldNotBreakTheEncryptedChannel(t *testing.T) {
var hello = []byte("hello")
var toSend []ValidMessage
var err error
alice := &Conversation{Rand: rand.Reader}
alice.Policies = policies(allowV2 | allowV3)
alice.SetOurKeys([]PrivateKey{alicePrivateKey})
bob := &Conversation{Rand: rand.Reader}
bob.Policies = policies(allowV2 | allowV3)
bob.SetOurKeys([]PrivateKey{bobPrivateKey})
//Alice send Bob queryMsg
_, toSend, err = bob.Receive(alice.QueryMessage())
assertNil(t, err)
assertEquals(t, bob.ake.state, authStateAwaitingDHKey{})
assertEquals(t, bob.version, otrV3{})
//Bob send Alice DHCommit
_, toSend, err = alice.Receive(toSend[0])
assertEquals(t, alice.ake.state, authStateAwaitingRevealSig{})
assertNil(t, err)
//Alice send Bob DHKey
_, toSend, err = bob.Receive(toSend[0])
dec, _ := decode(encodedMessage(toSend[0]))
assertNil(t, err)
assertDeepEquals(t, bob.ake.state, authStateAwaitingSig{revealSigMsg: dec})
//Bob send Alice RevealSig
_, toSend, err = alice.Receive(toSend[0])
assertNil(t, err)
assertEquals(t, alice.ake.state, authStateNone{})
//Alice send Bob Sig
_, _, err = bob.Receive(toSend[0])
assertNil(t, err)
assertEquals(t, bob.ake.state, authStateNone{})
// Alice sends a message to bob
m, err := alice.Send(hello)
assertNil(t, err)
bob.updateLastSent()
plain, ret, err := bob.Receive(m[0])
assertNil(t, err)
assertDeepEquals(t, plain, MessagePlaintext(hello))
assertNil(t, ret)
//
// Restarts the AKE
//
//Alice send Bob queryMsg
bob.lastMessageStateChange = time.Time{}
bob.ake.lastStateChange = time.Time{}
_, _, err = bob.Receive(alice.QueryMessage())
assertNil(t, err)
assertEquals(t, bob.ake.state, authStateAwaitingDHKey{})
assertEquals(t, bob.version, otrV3{})
//Alice sends Bob a data message
m, err = alice.Send(hello)
assertNil(t, err)
plain, ret, err = bob.Receive(m[0])
assertNil(t, err)
assertDeepEquals(t, plain, MessagePlaintext(hello))
assertNil(t, ret)
}