X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=sshsha.c;h=48cabb5c5c38c2f9383b016502b8579272eacb79;hb=9b15a8010102fc83dcd7eef78014a65f11619d63;hp=95d5259e352d87537f196f8335958033f5a536dd;hpb=e48981def400f4eb170f79294790eb15e6832a76;p=PuTTY.git

diff --git a/sshsha.c b/sshsha.c
index 95d5259e..48cabb5c 100644
--- a/sshsha.c
+++ b/sshsha.c
@@ -199,6 +199,14 @@ static void sha1_sckey(unsigned char *key) {
     sha1_key(&sha1_sc_mac_s1, &sha1_sc_mac_s2, key, 20);
 }
 
+static void sha1_cskey_buggy(unsigned char *key) {
+    sha1_key(&sha1_cs_mac_s1, &sha1_cs_mac_s2, key, 16);
+}
+
+static void sha1_sckey_buggy(unsigned char *key) {
+    sha1_key(&sha1_sc_mac_s1, &sha1_sc_mac_s2, key, 16);
+}
+
 static void sha1_do_hmac(SHA_State *s1, SHA_State *s2,
                          unsigned char *blk, int len, unsigned long seq,
                          unsigned char *hmac) {
@@ -236,3 +244,11 @@ struct ssh_mac ssh_sha1 = {
     "hmac-sha1",
     20
 };
+
+struct ssh_mac ssh_sha1_buggy = {
+    sha1_cskey_buggy, sha1_sckey_buggy,
+    sha1_generate,
+    sha1_verify,
+    "hmac-sha1",
+    20
+};