Add support for variable-length session keys in our client code.

This means that we now support 'net rpc join' with KRB5 (des based)
logins.  Now, you need to hack 'net' to do that, but the principal is
important...

When we add kerberos to 'net rpc', it should be possible to still do
user management and the like over RPC.

(server-side support to follow shortly)

Andrew Bartlett
(This used to be commit 9ecf9408d98639186b283f1acf0fac46417547d0)

1 files changed, 40 insertions, 0 deletions

diff --git a/source3/libsmb/smbdes.c b/source3/libsmb/smbdes.c
index cde77f94a3..ae946b4a66 100644
--- a/source3/libsmb/smbdes.c
+++ b/source3/libsmb/smbdes.c
@@ -397,6 +397,46 @@ void SamOEMhash( unsigned char *data, const unsigned char *key, int val)
   }
 }
 
+void SamOEMhashBlob( unsigned char *data, int len, DATA_BLOB *key)
+{
+  unsigned char s_box[256];
+  unsigned char index_i = 0;
+  unsigned char index_j = 0;
+  unsigned char j = 0;
+  int ind;
+
+  for (ind = 0; ind < 256; ind++)
+  {
+    s_box[ind] = (unsigned char)ind;
+  }
+
+  for( ind = 0; ind < 256; ind++)
+  {
+     unsigned char tc;
+
+     j += (s_box[ind] + key->data[ind%key->length]);
+
+     tc = s_box[ind];
+     s_box[ind] = s_box[j];
+     s_box[j] = tc;
+  }
+  for( ind = 0; ind < len; ind++)
+  {
+    unsigned char tc;
+    unsigned char t;
+
+    index_i++;
+    index_j += s_box[index_i];
+
+    tc = s_box[index_i];
+    s_box[index_i] = s_box[index_j];
+    s_box[index_j] = tc;
+
+    t = s_box[index_i] + s_box[index_j];
+    data[ind] = data[ind] ^ s_box[t];
+  }
+}
+
 /* Decode a sam password hash into a password.  The password hash is the
    same method used to store passwords in the NT registry.  The DES key
    used is based on the RID of the user. */