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authoriNPUTmice <daniel@gultsch.de>2014-10-22 13:06:46 +0200
committeriNPUTmice <daniel@gultsch.de>2014-10-22 13:06:46 +0200
commit62b0fc3fdac1af440d61bb6d197dcd7fc34372b4 (patch)
tree9bda78ccbc7e7c10f2f643f9bf67eadf33c23443 /src
parent45bdadd915ed0e0135de16876f9842b3401f1ac4 (diff)
made httpconnection accept aes encrypted files
Diffstat (limited to 'src')
-rw-r--r--src/eu/siacs/conversations/entities/DownloadableFile.java23
-rw-r--r--src/eu/siacs/conversations/entities/Message.java5
-rw-r--r--src/eu/siacs/conversations/http/HttpConnection.java9
-rw-r--r--src/eu/siacs/conversations/utils/CryptoHelper.java9
-rw-r--r--src/eu/siacs/conversations/xmpp/jingle/JingleConnectionManager.java3
5 files changed, 33 insertions, 16 deletions
diff --git a/src/eu/siacs/conversations/entities/DownloadableFile.java b/src/eu/siacs/conversations/entities/DownloadableFile.java
index 50b00fb8..1605c75b 100644
--- a/src/eu/siacs/conversations/entities/DownloadableFile.java
+++ b/src/eu/siacs/conversations/entities/DownloadableFile.java
@@ -19,7 +19,6 @@ import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import eu.siacs.conversations.Config;
-import eu.siacs.conversations.utils.CryptoHelper;
import android.util.Log;
public class DownloadableFile extends File {
@@ -43,7 +42,11 @@ public class DownloadableFile extends File {
public long getExpectedSize() {
if (this.aeskey != null) {
- return (this.expectedSize / 16 + 1) * 16;
+ if (this.expectedSize == 0) {
+ return 0;
+ } else {
+ return (this.expectedSize / 16 + 1) * 16;
+ }
} else {
return this.expectedSize;
}
@@ -62,7 +65,14 @@ public class DownloadableFile extends File {
}
public void setKey(byte[] key) {
- if (key.length >= 32) {
+ if (key.length == 48) {
+ byte[] secretKey = new byte[32];
+ byte[] iv = new byte[16];
+ System.arraycopy(key, 0, iv, 0, 16);
+ System.arraycopy(key, 16, secretKey, 0, 32);
+ this.aeskey = new SecretKeySpec(secretKey, "AES");
+ this.iv = iv;
+ } else if (key.length >= 32) {
byte[] secretKey = new byte[32];
System.arraycopy(key, 0, secretKey, 0, 32);
this.aeskey = new SecretKeySpec(secretKey, "AES");
@@ -70,12 +80,7 @@ public class DownloadableFile extends File {
byte[] secretKey = new byte[16];
System.arraycopy(key, 0, secretKey, 0, 16);
this.aeskey = new SecretKeySpec(secretKey, "AES");
- } else {
- Log.d(Config.LOGTAG, "weird key");
}
- Log.d(Config.LOGTAG,
- "using aes key "
- + CryptoHelper.bytesToHex(this.aeskey.getEncoded()));
}
public Key getKey() {
@@ -123,7 +128,7 @@ public class DownloadableFile extends File {
}
} else {
try {
- IvParameterSpec ips = new IvParameterSpec(iv);
+ IvParameterSpec ips = new IvParameterSpec(this.iv);
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
cipher.init(Cipher.DECRYPT_MODE, this.getKey(), ips);
Log.d(Config.LOGTAG, "opening encrypted output stream");
diff --git a/src/eu/siacs/conversations/entities/Message.java b/src/eu/siacs/conversations/entities/Message.java
index dab28539..a390c7ca 100644
--- a/src/eu/siacs/conversations/entities/Message.java
+++ b/src/eu/siacs/conversations/entities/Message.java
@@ -403,8 +403,9 @@ public class Message extends AbstractEntity {
extensionParts[extensionParts.length - 1])) {
return true;
} else if (extensionParts.length == 3
- && Arrays.asList(Downloadable.VALID_CRYPTO_EXTENSIONS)
- .contains(extensionParts.length - 1)
+ && Arrays
+ .asList(Downloadable.VALID_CRYPTO_EXTENSIONS)
+ .contains(extensionParts[extensionParts.length - 1])
&& Arrays.asList(Downloadable.VALID_EXTENSIONS).contains(
extensionParts[extensionParts.length - 2])) {
return true;
diff --git a/src/eu/siacs/conversations/http/HttpConnection.java b/src/eu/siacs/conversations/http/HttpConnection.java
index 467b6a80..407a13d9 100644
--- a/src/eu/siacs/conversations/http/HttpConnection.java
+++ b/src/eu/siacs/conversations/http/HttpConnection.java
@@ -27,6 +27,7 @@ import eu.siacs.conversations.entities.Downloadable;
import eu.siacs.conversations.entities.DownloadableFile;
import eu.siacs.conversations.entities.Message;
import eu.siacs.conversations.services.XmppConnectionService;
+import eu.siacs.conversations.utils.CryptoHelper;
public class HttpConnection implements Downloadable {
@@ -64,6 +65,14 @@ public class HttpConnection implements Downloadable {
mUrl = new URL(message.getBody());
this.file = mXmppConnectionService.getFileBackend().getFile(
message, false);
+ String reference = mUrl.getRef();
+ if (reference != null && reference.length() == 96) {
+ this.file.setKey(CryptoHelper.hexToBytes(reference));
+ }
+ if (this.message.getEncryption() == Message.ENCRYPTION_OTR
+ && this.file.getKey() == null) {
+ this.message.setEncryption(Message.ENCRYPTION_NONE);
+ }
checkFileSize(false);
} catch (MalformedURLException e) {
this.cancel();
diff --git a/src/eu/siacs/conversations/utils/CryptoHelper.java b/src/eu/siacs/conversations/utils/CryptoHelper.java
index a28b519e..47595c6e 100644
--- a/src/eu/siacs/conversations/utils/CryptoHelper.java
+++ b/src/eu/siacs/conversations/utils/CryptoHelper.java
@@ -5,7 +5,6 @@ import java.nio.charset.Charset;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
-import java.util.Arrays;
import eu.siacs.conversations.entities.Account;
import android.util.Base64;
@@ -28,9 +27,11 @@ public class CryptoHelper {
}
public static byte[] hexToBytes(String hexString) {
- byte[] array = new BigInteger(hexString, 16).toByteArray();
- if (array[0] == 0) {
- array = Arrays.copyOfRange(array, 1, array.length);
+ int len = hexString.length();
+ byte[] array = new byte[len / 2];
+ for (int i = 0; i < len; i += 2) {
+ array[i / 2] = (byte) ((Character.digit(hexString.charAt(i), 16) << 4) + Character
+ .digit(hexString.charAt(i + 1), 16));
}
return array;
}
diff --git a/src/eu/siacs/conversations/xmpp/jingle/JingleConnectionManager.java b/src/eu/siacs/conversations/xmpp/jingle/JingleConnectionManager.java
index c8209bd9..1e7c84d4 100644
--- a/src/eu/siacs/conversations/xmpp/jingle/JingleConnectionManager.java
+++ b/src/eu/siacs/conversations/xmpp/jingle/JingleConnectionManager.java
@@ -136,7 +136,8 @@ public class JingleConnectionManager extends AbstractConnectionManager {
}
if (sid != null) {
for (JingleConnection connection : connections) {
- if (connection.getAccount() == account && connection.hasTransportId(sid)) {
+ if (connection.getAccount() == account
+ && connection.hasTransportId(sid)) {
JingleTransport transport = connection.getTransport();
if (transport instanceof JingleInbandTransport) {
JingleInbandTransport inbandTransport = (JingleInbandTransport) transport;