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go back to 16 byte IVs for OMEMO 

clients like Dino can’t handle 12 byte IVs
This commit is contained in:
Daniel Gultsch 2018-10-04 22:32:37 +02:00
parent 0e3be466ad
commit ce46b36c33
2 changed files with 13 additions and 16 deletions
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2
src/main/java/eu/siacs/conversations/crypto/axolotl/AxolotlService.java
View File

@ -550,7 +550,7 @@ public class AxolotlService implements OnAdvancedStreamFeaturesLoaded {
} else { } else {
Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": own device " + session.getFingerprint() + " was active " + hours + " hours ago"); Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": own device " + session.getFingerprint() + " was active " + hours + " hours ago");
} }
} } //TODO print last activation diff
} }
} }
return devices; return devices;

27
src/main/java/eu/siacs/conversations/crypto/axolotl/XmppAxolotlMessage.java
View File

@ -4,15 +4,12 @@ import android.util.Base64;
import android.util.Log; import android.util.Log;
import android.util.SparseArray; import android.util.SparseArray;
import java.security.InvalidAlgorithmParameterException; import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException; import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException; import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException; import java.security.NoSuchProviderException;
import java.security.SecureRandom; import java.security.SecureRandom;
import java.util.HashMap;
import java.util.List; import java.util.List;
import java.util.Map;
import javax.crypto.BadPaddingException; import javax.crypto.BadPaddingException;
import javax.crypto.Cipher; import javax.crypto.Cipher;
@ -30,12 +27,12 @@ import rocks.xmpp.addr.Jid;
public class XmppAxolotlMessage { public class XmppAxolotlMessage {
public static final String CONTAINERTAG = "encrypted"; public static final String CONTAINERTAG = "encrypted";
public static final String HEADER = "header"; private static final String HEADER = "header";
public static final String SOURCEID = "sid"; private static final String SOURCEID = "sid";
public static final String KEYTAG = "key"; private static final String KEYTAG = "key";
public static final String REMOTEID = "rid"; private static final String REMOTEID = "rid";
public static final String IVTAG = "iv"; private static final String IVTAG = "iv";
public static final String PAYLOAD = "payload"; private static final String PAYLOAD = "payload";
private static final String KEYTYPE = "AES"; private static final String KEYTYPE = "AES";
private static final String CIPHERMODE = "AES/GCM/NoPadding"; private static final String CIPHERMODE = "AES/GCM/NoPadding";
@ -53,7 +50,7 @@ public class XmppAxolotlMessage {
private final String plaintext; private final String plaintext;
private final String fingerprint; private final String fingerprint;
public XmppAxolotlPlaintextMessage(String plaintext, String fingerprint) { XmppAxolotlPlaintextMessage(String plaintext, String fingerprint) {
this.plaintext = plaintext; this.plaintext = plaintext;
this.fingerprint = fingerprint; this.fingerprint = fingerprint;
} }
@ -73,7 +70,7 @@ public class XmppAxolotlMessage {
private final byte[] key; private final byte[] key;
private final byte[] iv; private final byte[] iv;
public XmppAxolotlKeyTransportMessage(String fingerprint, byte[] key, byte[] iv) { XmppAxolotlKeyTransportMessage(String fingerprint, byte[] key, byte[] iv) {
this.fingerprint = fingerprint; this.fingerprint = fingerprint;
this.key = key; this.key = key;
this.iv = iv; this.iv = iv;
@ -143,7 +140,7 @@ public class XmppAxolotlMessage {
} }
} }
public XmppAxolotlMessage(Jid from, int sourceDeviceId) { XmppAxolotlMessage(Jid from, int sourceDeviceId) {
this.from = from; this.from = from;
this.sourceDeviceId = sourceDeviceId; this.sourceDeviceId = sourceDeviceId;
this.keys = new SparseArray<>(); this.keys = new SparseArray<>();
@ -168,7 +165,7 @@ public class XmppAxolotlMessage {
private static byte[] generateIv() { private static byte[] generateIv() {
SecureRandom random = new SecureRandom(); SecureRandom random = new SecureRandom();
byte[] iv = new byte[12]; byte[] iv = new byte[16];
random.nextBytes(iv); random.nextBytes(iv);
return iv; return iv;
} }
@ -177,7 +174,7 @@ public class XmppAxolotlMessage {
return ciphertext != null; return ciphertext != null;
} }
public void encrypt(String plaintext) throws CryptoFailedException { void encrypt(String plaintext) throws CryptoFailedException {
try { try {
SecretKey secretKey = new SecretKeySpec(innerKey, KEYTYPE); SecretKey secretKey = new SecretKeySpec(innerKey, KEYTYPE);
IvParameterSpec ivSpec = new IvParameterSpec(iv); IvParameterSpec ivSpec = new IvParameterSpec(iv);
@ -276,7 +273,7 @@ public class XmppAxolotlMessage {
return session.processReceiving(encryptedKey); return session.processReceiving(encryptedKey);
} }
public XmppAxolotlKeyTransportMessage getParameters(XmppAxolotlSession session, Integer sourceDeviceId) throws CryptoFailedException { XmppAxolotlKeyTransportMessage getParameters(XmppAxolotlSession session, Integer sourceDeviceId) throws CryptoFailedException {
return new XmppAxolotlKeyTransportMessage(session.getFingerprint(), unpackKey(session, sourceDeviceId), getIV()); return new XmppAxolotlKeyTransportMessage(session.getFingerprint(), unpackKey(session, sourceDeviceId), getIV());
} }