Kaladaran/briar
0
0
Fork 0
mirror of https://code.briarproject.org/briar/briar.git synced 2026-02-12 18:59:06 +01:00
Code Issues Projects Releases Wiki Activity

More checks for duplicate keys in maps.

Browse Source
This commit is contained in:
akwizgran
2012-10-24 23:48:55 +01:00
parent e78b94b815
commit 0ffdaf89c0
1 changed files with 24 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
components/net/sf/briar/transport/KeyManagerImpl.java
View File

@@ -136,16 +136,21 @@ class KeyManagerImpl extends TimerTask implements KeyManager, DatabaseListener {
if(incomingNew.containsKey(k)) throw new IllegalStateException();
byte[] secret = s.getSecret();
long period = s.getPeriod();
TemporarySecret dupe; // There should not be any duplicate keys
if(incomingOld.containsKey(k)) {
// The dead secret's successor is still alive
byte[] secret1 = crypto.deriveNextSecret(secret, period + 1);
TemporarySecret s1 = new TemporarySecret(s, period + 1,
secret1);
created.add(s1);
incomingNew.put(k, s1);
dupe = incomingNew.put(k, s1);
if(dupe != null) throw new IllegalStateException();
long creationTime = getCreationTime(s1);
long activationTime = creationTime + s1.getClockDifference();
if(now >= activationTime) outgoing.put(k, s1);
if(now >= activationTime) {
dupe = outgoing.put(k, s1);
if(dupe != null) throw new IllegalStateException();
}
} else {
// The dead secret has no living successor
long rotationPeriod = getRotationPeriod(s);
@@ -165,16 +170,20 @@ class KeyManagerImpl extends TimerTask implements KeyManager, DatabaseListener {
TemporarySecret s1, s2;
s1 = new TemporarySecret(s, currentPeriod - 1, secret1);
created.add(s1);
incomingOld.put(k, s1);
dupe = incomingOld.put(k, s1);
if(dupe != null) throw new IllegalStateException();
s2 = new TemporarySecret(s, currentPeriod, secret2);
created.add(s2);
incomingNew.put(k, s2);
dupe = incomingNew.put(k, s2);
if(dupe != null) throw new IllegalStateException();
if(elapsed % rotationPeriod < s.getClockDifference()) {
// The outgoing secret is the newer incoming secret
outgoing.put(k, s2);
dupe = outgoing.put(k, s2);
if(dupe != null) throw new IllegalStateException();
} else {
// The outgoing secret is the older incoming secret
outgoing.put(k, s1);
dupe = outgoing.put(k, s1);
if(dupe != null) throw new IllegalStateException();
}
}
// Erase the dead secret
@@ -239,17 +248,21 @@ class KeyManagerImpl extends TimerTask implements KeyManager, DatabaseListener {
secret2 = crypto.deriveNextSecret(secret1, currentPeriod);
// One of the incoming secrets is the current outgoing secret
ContactTransportKey k = new ContactTransportKey(ct);
TemporarySecret s1, s2;
TemporarySecret s1, s2, dupe;
s1 = new TemporarySecret(ct, currentPeriod - 1, secret1);
incomingOld.put(k, s1);
dupe = incomingOld.put(k, s1);
if(dupe != null) throw new IllegalStateException();
s2 = new TemporarySecret(ct, currentPeriod, secret2);
incomingNew.put(k, s2);
dupe = incomingNew.put(k, s2);
if(dupe != null) throw new IllegalStateException();
if(elapsed % rotationPeriod < ct.getClockDifference()) {
// The outgoing secret is the newer incoming secret
outgoing.put(k, s2);
dupe = outgoing.put(k, s2);
if(dupe != null) throw new IllegalStateException();
} else {
// The outgoing secret is the older incoming secret
outgoing.put(k, s1);
dupe = outgoing.put(k, s1);
if(dupe != null) throw new IllegalStateException();
}
// Store the new secrets
try {