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-rw-r--r--net-p2p/transmission/files/transmission-2.92-handshake.patch33
1 files changed, 33 insertions, 0 deletions
diff --git a/net-p2p/transmission/files/transmission-2.92-handshake.patch b/net-p2p/transmission/files/transmission-2.92-handshake.patch
new file mode 100644
index 000000000000..a30cd583fae0
--- /dev/null
+++ b/net-p2p/transmission/files/transmission-2.92-handshake.patch
@@ -0,0 +1,33 @@
+commit 4c00df9463ea4fd70b73c620e439f5c3ee5efa60
+Author: Mike Gelfand <mikedld@mikedld.com>
+Date: Sun Sep 18 13:58:15 2016 +0300
+
+ Abort handshake if establishing DH shared secret fails
+
+ Fixes #27
+
+diff --git a/libtransmission/handshake.c b/libtransmission/handshake.c
+index c728696..e7ff131 100644
+--- a/libtransmission/handshake.c
++++ b/libtransmission/handshake.c
+@@ -425,7 +425,8 @@ readYb (tr_handshake * handshake, struct evbuffer * inbuf)
+
+ /* compute the secret */
+ evbuffer_remove (inbuf, yb, KEY_LEN);
+- tr_cryptoComputeSecret (handshake->crypto, yb);
++ if (!tr_cryptoComputeSecret (handshake->crypto, yb))
++ return tr_handshakeDone (handshake, false);
+
+ /* now send these: HASH ('req1', S), HASH ('req2', SKEY) xor HASH ('req3', S),
+ * ENCRYPT (VC, crypto_provide, len (PadC), PadC, len (IA)), ENCRYPT (IA) */
+@@ -741,7 +742,9 @@ readYa (tr_handshake * handshake,
+
+ /* read the incoming peer's public key */
+ evbuffer_remove (inbuf, ya, KEY_LEN);
+- tr_cryptoComputeSecret (handshake->crypto, ya);
++ if (!tr_cryptoComputeSecret (handshake->crypto, ya))
++ return tr_handshakeDone (handshake, false);
++
+ computeRequestHash (handshake, "req1", handshake->myReq1);
+
+ /* send our public key to the peer */