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package otr3
import (
"crypto/rand"
"testing"
)
func Test_processExtraSymmetricKeyTLV_signalsAReceivedKeyEventWithTheExtraKey(t *testing.T) {
c := &Conversation{}
extraKey := []byte{0x89, 0x11, 0x13, 0x66, 0xAB, 0xCD}
x := dataMessageExtra{extraKey}
called := false
c.receivedKeyHandler = dynamicReceivedKeyHandler{func(usage uint32, usageData []byte, symkey []byte) {
assertDeepEquals(t, symkey, extraKey)
called = true
}}
c.processExtraSymmetricKeyTLV(tlv{tlvTypeExtraSymmetricKey, 0x04, []byte{0xAB, 0x12, 0xCD, 0x44}}, x)
assertEquals(t, called, true)
}
func Test_processExtraSymmetricKeyTLV_signalsTheReceivedUsageData(t *testing.T) {
c := &Conversation{}
extraKey := []byte{0x89, 0x11, 0x13, 0x66, 0xAB, 0xCD}
x := dataMessageExtra{extraKey}
called := false
c.receivedKeyHandler = dynamicReceivedKeyHandler{func(usage uint32, usageData []byte, symkey []byte) {
assertEquals(t, usage, uint32(0xAB12CD44))
called = true
}}
c.processExtraSymmetricKeyTLV(tlv{tlvTypeExtraSymmetricKey, 0x04, []byte{0xAB, 0x12, 0xCD, 0x44}}, x)
assertEquals(t, called, true)
}
func Test_processExtraSymmetricKeyTLV_doesntSignalAnythingIfThereIsNoUsageData(t *testing.T) {
c := &Conversation{}
extraKey := []byte{0x89, 0x11, 0x13, 0x66, 0xAB, 0xCD}
x := dataMessageExtra{extraKey}
c.receivedKeyHandler = dynamicReceivedKeyHandler{func(usage uint32, usageData []byte, symkey []byte) {
t.Errorf("Didn't expect a received key event one")
}}
c.processExtraSymmetricKeyTLV(tlv{tlvTypeExtraSymmetricKey, 0x00, []byte{}}, x)
}
func Test_processExtraSymmetricKeyTLV_providesExtraUsageDataIfGiven(t *testing.T) {
c := &Conversation{}
extraKey := []byte{0x89, 0x11, 0x13, 0x66, 0xAB, 0xCD}
x := dataMessageExtra{extraKey}
called := false
c.receivedKeyHandler = dynamicReceivedKeyHandler{func(usage uint32, usageData []byte, symkey []byte) {
assertDeepEquals(t, usageData, []byte{0x01, 0x02})
called = true
}}
c.processExtraSymmetricKeyTLV(tlv{tlvTypeExtraSymmetricKey, 0x06, []byte{0xAB, 0x12, 0xCD, 0x44, 0x01, 0x02, 0x04}}, x)
assertEquals(t, called, true)
}
func Test_processExtraSymmetricKeyTLV_alwaysReturnsNilAndNil(t *testing.T) {
c := &Conversation{}
x := dataMessageExtra{[]byte{0x89, 0x11, 0x13, 0x66, 0xAB, 0xCD}}
c.receivedKeyHandler = dynamicReceivedKeyHandler{func(usage uint32, usageData []byte, symkey []byte) {
}}
res, err := c.processExtraSymmetricKeyTLV(tlv{tlvTypeExtraSymmetricKey, 0x06, []byte{0xAB, 0x12, 0xCD, 0x44, 0x01, 0x02, 0x04}}, x)
assertNil(t, res)
assertNil(t, err)
}
func Test_UseExtraSymmetricKey_returnsErrorIfWeAreNotInEncryptedMode(t *testing.T) {
c := aliceContextAfterAKE()
c.msgState = plainText
_, _, err := c.UseExtraSymmetricKey(0, nil)
assertDeepEquals(t, err, newOtrError("cannot send message in current state"))
}
func Test_UseExtraSymmetricKey_returnsErrorIfTheirKeyIDIsZero(t *testing.T) {
c := aliceContextAfterAKE()
c.msgState = encrypted
c.keys.theirKeyID = 0
_, _, err := c.UseExtraSymmetricKey(0, nil)
assertDeepEquals(t, err, newOtrError("cannot send message in current state"))
}
func Test_UseExtraSymmetricKey_generatesADataMessageWithTheDataProvided(t *testing.T) {
c := newConversation(otrV3{}, rand.Reader)
c.Policies.add(allowV3)
c.ourCurrentKey = bobPrivateKey
_, c.keys = fixtureDataMsg(plainDataMsg{message: []byte("something")})
c.msgState = encrypted
_, msg, err := c.UseExtraSymmetricKey(0x1234, []byte{0xAB, 0xCD, 0xEE})
decodedMsg, _ := c.decode(encodedMessage(msg[0]))
assertNil(t, err)
_, exp, e := fixtureDecryptDataMsgBase(decodedMsg)
assertNil(t, e)
assertEquals(t, len(exp.tlvs), 2)
assertDeepEquals(t, exp.tlvs[0].tlvType, uint16(tlvTypeExtraSymmetricKey))
assertDeepEquals(t, exp.tlvs[0].tlvLength, uint16(7))
assertDeepEquals(t, exp.tlvs[0].tlvValue, []byte{0x00, 0x00, 0x12, 0x34, 0xAB, 0xCD, 0xEE})
}
func Test_UseExtraSymmetricKey_generatesADataMessageWithIgnoreUnreadableSet(t *testing.T) {
c := newConversation(otrV3{}, rand.Reader)
c.Policies.add(allowV3)
c.ourCurrentKey = bobPrivateKey
_, c.keys = fixtureDataMsg(plainDataMsg{message: []byte("something")})
c.msgState = encrypted
_, msg, _ := c.UseExtraSymmetricKey(0x1234, []byte{0xAB, 0xCD, 0xEE})
decodedMsg, _ := c.decode(encodedMessage(msg[0]))
assertEquals(t, decodedMsg[11], messageFlagIgnoreUnreadable)
}
func Test_UseExtraSymmetricKey_returnsTheGeneratedSymmetricKey(t *testing.T) {
c := newConversation(otrV3{}, rand.Reader)
c.Policies.add(allowV3)
c.ourCurrentKey = bobPrivateKey
_, c.keys = fixtureDataMsg(plainDataMsg{message: []byte("something")})
c.msgState = encrypted
k, _, _ := c.UseExtraSymmetricKey(0x1234, []byte{0xAB, 0xCD, 0xEE})
assertDeepEquals(t, k, bytesFromHex("0e1810c7c62c3bace6450dcbef16af8a271b5ac93030b83e9d0d80e0641e3c18"))
}
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