ppssrc: transform pps:// to tvod:// if possible

5 files changed, 548 insertions, 8 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
index b31fc8c..9478aab 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,10 +1,10 @@
 pps_LTLIBRARIES = libgstppssrc.la
 
-libgstppssrc_la_SOURCES = gstppssrc.c
+libgstppssrc_la_SOURCES = gstppssrc.c aes.c
 
 libgstppssrc_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_BASE_CFLAGS) $(GST_CFLAGS) $(PPS_CFLAGS) -I$(top_srcdir)/wrapper
 libgstppssrc_la_LIBADD = $(GST_PLUGINS_BASE_LIBS) $(GST_BASE_LIBS) $(PPS_LIBS)
 libgstppssrc_la_LDFLAGS = $(GST_PPS_LDFLAGS)
 libgstppssrc_la_LIBTOOLFLAGS = --tag=disable-static
 
-noinst_HEADERS = gstppssrc.h
+noinst_HEADERS = gstppssrc.h aes.h
diff --git a/src/aes.c b/src/aes.c
new file mode 100644
index 0000000..4a82b90
--- /dev/null
+++ b/src/aes.c
@@ -0,0 +1,405 @@
+// advanced encryption standard
+// author: karl malbrain, malbrain@yahoo.com
+/*
+  This work, including the source code, documentation
+  and related data, is placed into the public domain.
+
+  The orginal author is Karl Malbrain.
+
+  THIS SOFTWARE IS PROVIDED AS-IS WITHOUT WARRANTY
+  OF ANY KIND, NOT EVEN THE IMPLIED WARRANTY OF
+  MERCHANTABILITY. THE AUTHOR OF THIS SOFTWARE,
+  ASSUMES _NO_ RESPONSIBILITY FOR ANY CONSEQUENCE
+  RESULTING FROM THE USE, MODIFICATION, OR
+  REDISTRIBUTION OF THIS SOFTWARE.
+*/
+
+#include <string.h>
+#include "aes.h"
+
+typedef unsigned char uchar;
+
+// AES only supports Nb=4
+#define Nb 4			// number of columns in the state & expanded key
+
+#define Nk 4			// number of columns in a key
+#define Nr 10			// number of rounds in encryption
+
+static uchar Sbox[256] = {		// forward s-box
+    0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
+    0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
+    0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
+    0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,
+    0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,
+    0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
+    0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,
+    0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,
+    0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
+    0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,
+    0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
+    0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
+    0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,
+    0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,
+    0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
+    0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16};
+
+#if 0
+static uchar InvSbox[256] = {	// inverse s-box
+    0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb,
+    0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb,
+    0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e,
+    0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25,
+    0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92,
+    0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84,
+    0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06,
+    0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b,
+    0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73,
+    0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e,
+    0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b,
+    0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4,
+    0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f,
+    0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef,
+    0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61,
+    0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d};
+#endif
+
+// combined Xtimes2[Sbox[]]
+static uchar Xtime2Sbox[256] = {
+    0xc6, 0xf8, 0xee, 0xf6, 0xff, 0xd6, 0xde, 0x91, 0x60, 0x02, 0xce, 0x56, 0xe7, 0xb5, 0x4d, 0xec,
+    0x8f, 0x1f, 0x89, 0xfa, 0xef, 0xb2, 0x8e, 0xfb, 0x41, 0xb3, 0x5f, 0x45, 0x23, 0x53, 0xe4, 0x9b,
+    0x75, 0xe1, 0x3d, 0x4c, 0x6c, 0x7e, 0xf5, 0x83, 0x68, 0x51, 0xd1, 0xf9, 0xe2, 0xab, 0x62, 0x2a,
+    0x08, 0x95, 0x46, 0x9d, 0x30, 0x37, 0x0a, 0x2f, 0x0e, 0x24, 0x1b, 0xdf, 0xcd, 0x4e, 0x7f, 0xea,
+    0x12, 0x1d, 0x58, 0x34, 0x36, 0xdc, 0xb4, 0x5b, 0xa4, 0x76, 0xb7, 0x7d, 0x52, 0xdd, 0x5e, 0x13,
+    0xa6, 0xb9, 0x00, 0xc1, 0x40, 0xe3, 0x79, 0xb6, 0xd4, 0x8d, 0x67, 0x72, 0x94, 0x98, 0xb0, 0x85,
+    0xbb, 0xc5, 0x4f, 0xed, 0x86, 0x9a, 0x66, 0x11, 0x8a, 0xe9, 0x04, 0xfe, 0xa0, 0x78, 0x25, 0x4b,
+    0xa2, 0x5d, 0x80, 0x05, 0x3f, 0x21, 0x70, 0xf1, 0x63, 0x77, 0xaf, 0x42, 0x20, 0xe5, 0xfd, 0xbf,
+    0x81, 0x18, 0x26, 0xc3, 0xbe, 0x35, 0x88, 0x2e, 0x93, 0x55, 0xfc, 0x7a, 0xc8, 0xba, 0x32, 0xe6,
+    0xc0, 0x19, 0x9e, 0xa3, 0x44, 0x54, 0x3b, 0x0b, 0x8c, 0xc7, 0x6b, 0x28, 0xa7, 0xbc, 0x16, 0xad,
+    0xdb, 0x64, 0x74, 0x14, 0x92, 0x0c, 0x48, 0xb8, 0x9f, 0xbd, 0x43, 0xc4, 0x39, 0x31, 0xd3, 0xf2,
+    0xd5, 0x8b, 0x6e, 0xda, 0x01, 0xb1, 0x9c, 0x49, 0xd8, 0xac, 0xf3, 0xcf, 0xca, 0xf4, 0x47, 0x10,
+    0x6f, 0xf0, 0x4a, 0x5c, 0x38, 0x57, 0x73, 0x97, 0xcb, 0xa1, 0xe8, 0x3e, 0x96, 0x61, 0x0d, 0x0f,
+    0xe0, 0x7c, 0x71, 0xcc, 0x90, 0x06, 0xf7, 0x1c, 0xc2, 0x6a, 0xae, 0x69, 0x17, 0x99, 0x3a, 0x27,
+    0xd9, 0xeb, 0x2b, 0x22, 0xd2, 0xa9, 0x07, 0x33, 0x2d, 0x3c, 0x15, 0xc9, 0x87, 0xaa, 0x50, 0xa5,
+    0x03, 0x59, 0x09, 0x1a, 0x65, 0xd7, 0x84, 0xd0, 0x82, 0x29, 0x5a, 0x1e, 0x7b, 0xa8, 0x6d, 0x2c
+};
+
+// combined Xtimes3[Sbox[]]
+static uchar Xtime3Sbox[256] = {
+    0xa5, 0x84, 0x99, 0x8d, 0x0d, 0xbd, 0xb1, 0x54, 0x50, 0x03, 0xa9, 0x7d, 0x19, 0x62, 0xe6, 0x9a,
+    0x45, 0x9d, 0x40, 0x87, 0x15, 0xeb, 0xc9, 0x0b, 0xec, 0x67, 0xfd, 0xea, 0xbf, 0xf7, 0x96, 0x5b,
+    0xc2, 0x1c, 0xae, 0x6a, 0x5a, 0x41, 0x02, 0x4f, 0x5c, 0xf4, 0x34, 0x08, 0x93, 0x73, 0x53, 0x3f,
+    0x0c, 0x52, 0x65, 0x5e, 0x28, 0xa1, 0x0f, 0xb5, 0x09, 0x36, 0x9b, 0x3d, 0x26, 0x69, 0xcd, 0x9f,
+    0x1b, 0x9e, 0x74, 0x2e, 0x2d, 0xb2, 0xee, 0xfb, 0xf6, 0x4d, 0x61, 0xce, 0x7b, 0x3e, 0x71, 0x97,
+    0xf5, 0x68, 0x00, 0x2c, 0x60, 0x1f, 0xc8, 0xed, 0xbe, 0x46, 0xd9, 0x4b, 0xde, 0xd4, 0xe8, 0x4a,
+    0x6b, 0x2a, 0xe5, 0x16, 0xc5, 0xd7, 0x55, 0x94, 0xcf, 0x10, 0x06, 0x81, 0xf0, 0x44, 0xba, 0xe3,
+    0xf3, 0xfe, 0xc0, 0x8a, 0xad, 0xbc, 0x48, 0x04, 0xdf, 0xc1, 0x75, 0x63, 0x30, 0x1a, 0x0e, 0x6d,
+    0x4c, 0x14, 0x35, 0x2f, 0xe1, 0xa2, 0xcc, 0x39, 0x57, 0xf2, 0x82, 0x47, 0xac, 0xe7, 0x2b, 0x95,
+    0xa0, 0x98, 0xd1, 0x7f, 0x66, 0x7e, 0xab, 0x83, 0xca, 0x29, 0xd3, 0x3c, 0x79, 0xe2, 0x1d, 0x76,
+    0x3b, 0x56, 0x4e, 0x1e, 0xdb, 0x0a, 0x6c, 0xe4, 0x5d, 0x6e, 0xef, 0xa6, 0xa8, 0xa4, 0x37, 0x8b,
+    0x32, 0x43, 0x59, 0xb7, 0x8c, 0x64, 0xd2, 0xe0, 0xb4, 0xfa, 0x07, 0x25, 0xaf, 0x8e, 0xe9, 0x18,
+    0xd5, 0x88, 0x6f, 0x72, 0x24, 0xf1, 0xc7, 0x51, 0x23, 0x7c, 0x9c, 0x21, 0xdd, 0xdc, 0x86, 0x85,
+    0x90, 0x42, 0xc4, 0xaa, 0xd8, 0x05, 0x01, 0x12, 0xa3, 0x5f, 0xf9, 0xd0, 0x91, 0x58, 0x27, 0xb9,
+    0x38, 0x13, 0xb3, 0x33, 0xbb, 0x70, 0x89, 0xa7, 0xb6, 0x22, 0x92, 0x20, 0x49, 0xff, 0x78, 0x7a,
+    0x8f, 0xf8, 0x80, 0x17, 0xda, 0x31, 0xc6, 0xb8, 0xc3, 0xb0, 0x77, 0x11, 0xcb, 0xfc, 0xd6, 0x3a
+};
+
+// modular multiplication tables
+// based on:
+
+// Xtime2[x] = (x & 0x80 ? 0x1b : 0) ^ (x + x)
+// Xtime3[x] = x^Xtime2[x];
+#if 0
+static uchar Xtime2[256] = {
+    0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e, 0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e,
+    0x20, 0x22, 0x24, 0x26, 0x28, 0x2a, 0x2c, 0x2e, 0x30, 0x32, 0x34, 0x36, 0x38, 0x3a, 0x3c, 0x3e,
+    0x40, 0x42, 0x44, 0x46, 0x48, 0x4a, 0x4c, 0x4e, 0x50, 0x52, 0x54, 0x56, 0x58, 0x5a, 0x5c, 0x5e,
+    0x60, 0x62, 0x64, 0x66, 0x68, 0x6a, 0x6c, 0x6e, 0x70, 0x72, 0x74, 0x76, 0x78, 0x7a, 0x7c, 0x7e,
+    0x80, 0x82, 0x84, 0x86, 0x88, 0x8a, 0x8c, 0x8e, 0x90, 0x92, 0x94, 0x96, 0x98, 0x9a, 0x9c, 0x9e,
+    0xa0, 0xa2, 0xa4, 0xa6, 0xa8, 0xaa, 0xac, 0xae, 0xb0, 0xb2, 0xb4, 0xb6, 0xb8, 0xba, 0xbc, 0xbe,
+    0xc0, 0xc2, 0xc4, 0xc6, 0xc8, 0xca, 0xcc, 0xce, 0xd0, 0xd2, 0xd4, 0xd6, 0xd8, 0xda, 0xdc, 0xde,
+    0xe0, 0xe2, 0xe4, 0xe6, 0xe8, 0xea, 0xec, 0xee, 0xf0, 0xf2, 0xf4, 0xf6, 0xf8, 0xfa, 0xfc, 0xfe,
+    0x1b, 0x19, 0x1f, 0x1d, 0x13, 0x11, 0x17, 0x15, 0x0b, 0x09, 0x0f, 0x0d, 0x03, 0x01, 0x07, 0x05,
+    0x3b, 0x39, 0x3f, 0x3d, 0x33, 0x31, 0x37, 0x35, 0x2b, 0x29, 0x2f, 0x2d, 0x23, 0x21, 0x27, 0x25,
+    0x5b, 0x59, 0x5f, 0x5d, 0x53, 0x51, 0x57, 0x55, 0x4b, 0x49, 0x4f, 0x4d, 0x43, 0x41, 0x47, 0x45,
+    0x7b, 0x79, 0x7f, 0x7d, 0x73, 0x71, 0x77, 0x75, 0x6b, 0x69, 0x6f, 0x6d, 0x63, 0x61, 0x67, 0x65,
+    0x9b, 0x99, 0x9f, 0x9d, 0x93, 0x91, 0x97, 0x95, 0x8b, 0x89, 0x8f, 0x8d, 0x83, 0x81, 0x87, 0x85,
+    0xbb, 0xb9, 0xbf, 0xbd, 0xb3, 0xb1, 0xb7, 0xb5, 0xab, 0xa9, 0xaf, 0xad, 0xa3, 0xa1, 0xa7, 0xa5,
+    0xdb, 0xd9, 0xdf, 0xdd, 0xd3, 0xd1, 0xd7, 0xd5, 0xcb, 0xc9, 0xcf, 0xcd, 0xc3, 0xc1, 0xc7, 0xc5,
+    0xfb, 0xf9, 0xff, 0xfd, 0xf3, 0xf1, 0xf7, 0xf5, 0xeb, 0xe9, 0xef, 0xed, 0xe3, 0xe1, 0xe7, 0xe5};
+
+static uchar Xtime9[256] = {
+    0x00, 0x09, 0x12, 0x1b, 0x24, 0x2d, 0x36, 0x3f, 0x48, 0x41, 0x5a, 0x53, 0x6c, 0x65, 0x7e, 0x77,
+    0x90, 0x99, 0x82, 0x8b, 0xb4, 0xbd, 0xa6, 0xaf, 0xd8, 0xd1, 0xca, 0xc3, 0xfc, 0xf5, 0xee, 0xe7,
+    0x3b, 0x32, 0x29, 0x20, 0x1f, 0x16, 0x0d, 0x04, 0x73, 0x7a, 0x61, 0x68, 0x57, 0x5e, 0x45, 0x4c,
+    0xab, 0xa2, 0xb9, 0xb0, 0x8f, 0x86, 0x9d, 0x94, 0xe3, 0xea, 0xf1, 0xf8, 0xc7, 0xce, 0xd5, 0xdc,
+    0x76, 0x7f, 0x64, 0x6d, 0x52, 0x5b, 0x40, 0x49, 0x3e, 0x37, 0x2c, 0x25, 0x1a, 0x13, 0x08, 0x01,
+    0xe6, 0xef, 0xf4, 0xfd, 0xc2, 0xcb, 0xd0, 0xd9, 0xae, 0xa7, 0xbc, 0xb5, 0x8a, 0x83, 0x98, 0x91,
+    0x4d, 0x44, 0x5f, 0x56, 0x69, 0x60, 0x7b, 0x72, 0x05, 0x0c, 0x17, 0x1e, 0x21, 0x28, 0x33, 0x3a,
+    0xdd, 0xd4, 0xcf, 0xc6, 0xf9, 0xf0, 0xeb, 0xe2, 0x95, 0x9c, 0x87, 0x8e, 0xb1, 0xb8, 0xa3, 0xaa,
+    0xec, 0xe5, 0xfe, 0xf7, 0xc8, 0xc1, 0xda, 0xd3, 0xa4, 0xad, 0xb6, 0xbf, 0x80, 0x89, 0x92, 0x9b,
+    0x7c, 0x75, 0x6e, 0x67, 0x58, 0x51, 0x4a, 0x43, 0x34, 0x3d, 0x26, 0x2f, 0x10, 0x19, 0x02, 0x0b,
+    0xd7, 0xde, 0xc5, 0xcc, 0xf3, 0xfa, 0xe1, 0xe8, 0x9f, 0x96, 0x8d, 0x84, 0xbb, 0xb2, 0xa9, 0xa0,
+    0x47, 0x4e, 0x55, 0x5c, 0x63, 0x6a, 0x71, 0x78, 0x0f, 0x06, 0x1d, 0x14, 0x2b, 0x22, 0x39, 0x30,
+    0x9a, 0x93, 0x88, 0x81, 0xbe, 0xb7, 0xac, 0xa5, 0xd2, 0xdb, 0xc0, 0xc9, 0xf6, 0xff, 0xe4, 0xed,
+    0x0a, 0x03, 0x18, 0x11, 0x2e, 0x27, 0x3c, 0x35, 0x42, 0x4b, 0x50, 0x59, 0x66, 0x6f, 0x74, 0x7d,
+    0xa1, 0xa8, 0xb3, 0xba, 0x85, 0x8c, 0x97, 0x9e, 0xe9, 0xe0, 0xfb, 0xf2, 0xcd, 0xc4, 0xdf, 0xd6,
+    0x31, 0x38, 0x23, 0x2a, 0x15, 0x1c, 0x07, 0x0e, 0x79, 0x70, 0x6b, 0x62, 0x5d, 0x54, 0x4f, 0x46};
+
+static uchar XtimeB[256] = {
+    0x00, 0x0b, 0x16, 0x1d, 0x2c, 0x27, 0x3a, 0x31, 0x58, 0x53, 0x4e, 0x45, 0x74, 0x7f, 0x62, 0x69,
+    0xb0, 0xbb, 0xa6, 0xad, 0x9c, 0x97, 0x8a, 0x81, 0xe8, 0xe3, 0xfe, 0xf5, 0xc4, 0xcf, 0xd2, 0xd9,
+    0x7b, 0x70, 0x6d, 0x66, 0x57, 0x5c, 0x41, 0x4a, 0x23, 0x28, 0x35, 0x3e, 0x0f, 0x04, 0x19, 0x12,
+    0xcb, 0xc0, 0xdd, 0xd6, 0xe7, 0xec, 0xf1, 0xfa, 0x93, 0x98, 0x85, 0x8e, 0xbf, 0xb4, 0xa9, 0xa2,
+    0xf6, 0xfd, 0xe0, 0xeb, 0xda, 0xd1, 0xcc, 0xc7, 0xae, 0xa5, 0xb8, 0xb3, 0x82, 0x89, 0x94, 0x9f,
+    0x46, 0x4d, 0x50, 0x5b, 0x6a, 0x61, 0x7c, 0x77, 0x1e, 0x15, 0x08, 0x03, 0x32, 0x39, 0x24, 0x2f,
+    0x8d, 0x86, 0x9b, 0x90, 0xa1, 0xaa, 0xb7, 0xbc, 0xd5, 0xde, 0xc3, 0xc8, 0xf9, 0xf2, 0xef, 0xe4,
+    0x3d, 0x36, 0x2b, 0x20, 0x11, 0x1a, 0x07, 0x0c, 0x65, 0x6e, 0x73, 0x78, 0x49, 0x42, 0x5f, 0x54,
+    0xf7, 0xfc, 0xe1, 0xea, 0xdb, 0xd0, 0xcd, 0xc6, 0xaf, 0xa4, 0xb9, 0xb2, 0x83, 0x88, 0x95, 0x9e,
+    0x47, 0x4c, 0x51, 0x5a, 0x6b, 0x60, 0x7d, 0x76, 0x1f, 0x14, 0x09, 0x02, 0x33, 0x38, 0x25, 0x2e,
+    0x8c, 0x87, 0x9a, 0x91, 0xa0, 0xab, 0xb6, 0xbd, 0xd4, 0xdf, 0xc2, 0xc9, 0xf8, 0xf3, 0xee, 0xe5,
+    0x3c, 0x37, 0x2a, 0x21, 0x10, 0x1b, 0x06, 0x0d, 0x64, 0x6f, 0x72, 0x79, 0x48, 0x43, 0x5e, 0x55,
+    0x01, 0x0a, 0x17, 0x1c, 0x2d, 0x26, 0x3b, 0x30, 0x59, 0x52, 0x4f, 0x44, 0x75, 0x7e, 0x63, 0x68,
+    0xb1, 0xba, 0xa7, 0xac, 0x9d, 0x96, 0x8b, 0x80, 0xe9, 0xe2, 0xff, 0xf4, 0xc5, 0xce, 0xd3, 0xd8,
+    0x7a, 0x71, 0x6c, 0x67, 0x56, 0x5d, 0x40, 0x4b, 0x22, 0x29, 0x34, 0x3f, 0x0e, 0x05, 0x18, 0x13,
+    0xca, 0xc1, 0xdc, 0xd7, 0xe6, 0xed, 0xf0, 0xfb, 0x92, 0x99, 0x84, 0x8f, 0xbe, 0xb5, 0xa8, 0xa3};
+
+static uchar XtimeD[256] = {
+    0x00, 0x0d, 0x1a, 0x17, 0x34, 0x39, 0x2e, 0x23, 0x68, 0x65, 0x72, 0x7f, 0x5c, 0x51, 0x46, 0x4b,
+    0xd0, 0xdd, 0xca, 0xc7, 0xe4, 0xe9, 0xfe, 0xf3, 0xb8, 0xb5, 0xa2, 0xaf, 0x8c, 0x81, 0x96, 0x9b,
+    0xbb, 0xb6, 0xa1, 0xac, 0x8f, 0x82, 0x95, 0x98, 0xd3, 0xde, 0xc9, 0xc4, 0xe7, 0xea, 0xfd, 0xf0,
+    0x6b, 0x66, 0x71, 0x7c, 0x5f, 0x52, 0x45, 0x48, 0x03, 0x0e, 0x19, 0x14, 0x37, 0x3a, 0x2d, 0x20,
+    0x6d, 0x60, 0x77, 0x7a, 0x59, 0x54, 0x43, 0x4e, 0x05, 0x08, 0x1f, 0x12, 0x31, 0x3c, 0x2b, 0x26,
+    0xbd, 0xb0, 0xa7, 0xaa, 0x89, 0x84, 0x93, 0x9e, 0xd5, 0xd8, 0xcf, 0xc2, 0xe1, 0xec, 0xfb, 0xf6,
+    0xd6, 0xdb, 0xcc, 0xc1, 0xe2, 0xef, 0xf8, 0xf5, 0xbe, 0xb3, 0xa4, 0xa9, 0x8a, 0x87, 0x90, 0x9d,
+    0x06, 0x0b, 0x1c, 0x11, 0x32, 0x3f, 0x28, 0x25, 0x6e, 0x63, 0x74, 0x79, 0x5a, 0x57, 0x40, 0x4d,
+    0xda, 0xd7, 0xc0, 0xcd, 0xee, 0xe3, 0xf4, 0xf9, 0xb2, 0xbf, 0xa8, 0xa5, 0x86, 0x8b, 0x9c, 0x91,
+    0x0a, 0x07, 0x10, 0x1d, 0x3e, 0x33, 0x24, 0x29, 0x62, 0x6f, 0x78, 0x75, 0x56, 0x5b, 0x4c, 0x41,
+    0x61, 0x6c, 0x7b, 0x76, 0x55, 0x58, 0x4f, 0x42, 0x09, 0x04, 0x13, 0x1e, 0x3d, 0x30, 0x27, 0x2a,
+    0xb1, 0xbc, 0xab, 0xa6, 0x85, 0x88, 0x9f, 0x92, 0xd9, 0xd4, 0xc3, 0xce, 0xed, 0xe0, 0xf7, 0xfa,
+    0xb7, 0xba, 0xad, 0xa0, 0x83, 0x8e, 0x99, 0x94, 0xdf, 0xd2, 0xc5, 0xc8, 0xeb, 0xe6, 0xf1, 0xfc,
+    0x67, 0x6a, 0x7d, 0x70, 0x53, 0x5e, 0x49, 0x44, 0x0f, 0x02, 0x15, 0x18, 0x3b, 0x36, 0x21, 0x2c,
+    0x0c, 0x01, 0x16, 0x1b, 0x38, 0x35, 0x22, 0x2f, 0x64, 0x69, 0x7e, 0x73, 0x50, 0x5d, 0x4a, 0x47,
+    0xdc, 0xd1, 0xc6, 0xcb, 0xe8, 0xe5, 0xf2, 0xff, 0xb4, 0xb9, 0xae, 0xa3, 0x80, 0x8d, 0x9a, 0x97};
+
+static uchar XtimeE[256] = {
+    0x00, 0x0e, 0x1c, 0x12, 0x38, 0x36, 0x24, 0x2a, 0x70, 0x7e, 0x6c, 0x62, 0x48, 0x46, 0x54, 0x5a,
+    0xe0, 0xee, 0xfc, 0xf2, 0xd8, 0xd6, 0xc4, 0xca, 0x90, 0x9e, 0x8c, 0x82, 0xa8, 0xa6, 0xb4, 0xba,
+    0xdb, 0xd5, 0xc7, 0xc9, 0xe3, 0xed, 0xff, 0xf1, 0xab, 0xa5, 0xb7, 0xb9, 0x93, 0x9d, 0x8f, 0x81,
+    0x3b, 0x35, 0x27, 0x29, 0x03, 0x0d, 0x1f, 0x11, 0x4b, 0x45, 0x57, 0x59, 0x73, 0x7d, 0x6f, 0x61,
+    0xad, 0xa3, 0xb1, 0xbf, 0x95, 0x9b, 0x89, 0x87, 0xdd, 0xd3, 0xc1, 0xcf, 0xe5, 0xeb, 0xf9, 0xf7,
+    0x4d, 0x43, 0x51, 0x5f, 0x75, 0x7b, 0x69, 0x67, 0x3d, 0x33, 0x21, 0x2f, 0x05, 0x0b, 0x19, 0x17,
+    0x76, 0x78, 0x6a, 0x64, 0x4e, 0x40, 0x52, 0x5c, 0x06, 0x08, 0x1a, 0x14, 0x3e, 0x30, 0x22, 0x2c,
+    0x96, 0x98, 0x8a, 0x84, 0xae, 0xa0, 0xb2, 0xbc, 0xe6, 0xe8, 0xfa, 0xf4, 0xde, 0xd0, 0xc2, 0xcc,
+    0x41, 0x4f, 0x5d, 0x53, 0x79, 0x77, 0x65, 0x6b, 0x31, 0x3f, 0x2d, 0x23, 0x09, 0x07, 0x15, 0x1b,
+    0xa1, 0xaf, 0xbd, 0xb3, 0x99, 0x97, 0x85, 0x8b, 0xd1, 0xdf, 0xcd, 0xc3, 0xe9, 0xe7, 0xf5, 0xfb,
+    0x9a, 0x94, 0x86, 0x88, 0xa2, 0xac, 0xbe, 0xb0, 0xea, 0xe4, 0xf6, 0xf8, 0xd2, 0xdc, 0xce, 0xc0,
+    0x7a, 0x74, 0x66, 0x68, 0x42, 0x4c, 0x5e, 0x50, 0x0a, 0x04, 0x16, 0x18, 0x32, 0x3c, 0x2e, 0x20,
+    0xec, 0xe2, 0xf0, 0xfe, 0xd4, 0xda, 0xc8, 0xc6, 0x9c, 0x92, 0x80, 0x8e, 0xa4, 0xaa, 0xb8, 0xb6,
+    0x0c, 0x02, 0x10, 0x1e, 0x34, 0x3a, 0x28, 0x26, 0x7c, 0x72, 0x60, 0x6e, 0x44, 0x4a, 0x58, 0x56,
+    0x37, 0x39, 0x2b, 0x25, 0x0f, 0x01, 0x13, 0x1d, 0x47, 0x49, 0x5b, 0x55, 0x7f, 0x71, 0x63, 0x6d,
+    0xd7, 0xd9, 0xcb, 0xc5, 0xef, 0xe1, 0xf3, 0xfd, 0xa7, 0xa9, 0xbb, 0xb5, 0x9f, 0x91, 0x83, 0x8d};
+
+#endif
+
+// exchanges columns in each of 4 rows
+// row0 - unchanged, row1- shifted left 1,
+// row2 - shifted left 2 and row3 - shifted left 3
+static void ShiftRows (uchar *state)
+{
+    uchar tmp;
+
+    // just substitute row 0
+    state[0] = Sbox[state[0]], state[4] = Sbox[state[4]];
+    state[8] = Sbox[state[8]], state[12] = Sbox[state[12]];
+
+    // rotate row 1
+    tmp = Sbox[state[1]], state[1] = Sbox[state[5]];
+    state[5] = Sbox[state[9]], state[9] = Sbox[state[13]], state[13] = tmp;
+
+    // rotate row 2
+    tmp = Sbox[state[2]], state[2] = Sbox[state[10]], state[10] = tmp;
+    tmp = Sbox[state[6]], state[6] = Sbox[state[14]], state[14] = tmp;
+
+    // rotate row 3
+    tmp = Sbox[state[15]], state[15] = Sbox[state[11]];
+    state[11] = Sbox[state[7]], state[7] = Sbox[state[3]], state[3] = tmp;
+}
+
+// restores columns in each of 4 rows
+// row0 - unchanged, row1- shifted right 1,
+// row2 - shifted right 2 and row3 - shifted right 3
+#if 0
+static void InvShiftRows (uchar *state)
+{
+    uchar tmp;
+
+    // restore row 0
+    state[0] = InvSbox[state[0]], state[4] = InvSbox[state[4]];
+    state[8] = InvSbox[state[8]], state[12] = InvSbox[state[12]];
+
+    // restore row 1
+    tmp = InvSbox[state[13]], state[13] = InvSbox[state[9]];
+    state[9] = InvSbox[state[5]], state[5] = InvSbox[state[1]], state[1] = tmp;
+
+    // restore row 2
+    tmp = InvSbox[state[2]], state[2] = InvSbox[state[10]], state[10] = tmp;
+    tmp = InvSbox[state[6]], state[6] = InvSbox[state[14]], state[14] = tmp;
+
+    // restore row 3
+    tmp = InvSbox[state[3]], state[3] = InvSbox[state[7]];
+    state[7] = InvSbox[state[11]], state[11] = InvSbox[state[15]], state[15] = tmp;
+}
+#endif
+
+// recombine and mix each row in a column
+static void MixSubColumns (uchar *state)
+{
+    uchar tmp[4 * Nb];
+
+    // mixing column 0
+    tmp[0] = Xtime2Sbox[state[0]] ^ Xtime3Sbox[state[5]] ^ Sbox[state[10]] ^ Sbox[state[15]];
+    tmp[1] = Sbox[state[0]] ^ Xtime2Sbox[state[5]] ^ Xtime3Sbox[state[10]] ^ Sbox[state[15]];
+    tmp[2] = Sbox[state[0]] ^ Sbox[state[5]] ^ Xtime2Sbox[state[10]] ^ Xtime3Sbox[state[15]];
+    tmp[3] = Xtime3Sbox[state[0]] ^ Sbox[state[5]] ^ Sbox[state[10]] ^ Xtime2Sbox[state[15]];
+
+    // mixing column 1
+    tmp[4] = Xtime2Sbox[state[4]] ^ Xtime3Sbox[state[9]] ^ Sbox[state[14]] ^ Sbox[state[3]];
+    tmp[5] = Sbox[state[4]] ^ Xtime2Sbox[state[9]] ^ Xtime3Sbox[state[14]] ^ Sbox[state[3]];
+    tmp[6] = Sbox[state[4]] ^ Sbox[state[9]] ^ Xtime2Sbox[state[14]] ^ Xtime3Sbox[state[3]];
+    tmp[7] = Xtime3Sbox[state[4]] ^ Sbox[state[9]] ^ Sbox[state[14]] ^ Xtime2Sbox[state[3]];
+
+    // mixing column 2
+    tmp[8] = Xtime2Sbox[state[8]] ^ Xtime3Sbox[state[13]] ^ Sbox[state[2]] ^ Sbox[state[7]];
+    tmp[9] = Sbox[state[8]] ^ Xtime2Sbox[state[13]] ^ Xtime3Sbox[state[2]] ^ Sbox[state[7]];
+    tmp[10]  = Sbox[state[8]] ^ Sbox[state[13]] ^ Xtime2Sbox[state[2]] ^ Xtime3Sbox[state[7]];
+    tmp[11]  = Xtime3Sbox[state[8]] ^ Sbox[state[13]] ^ Sbox[state[2]] ^ Xtime2Sbox[state[7]];
+
+    // mixing column 3
+    tmp[12] = Xtime2Sbox[state[12]] ^ Xtime3Sbox[state[1]] ^ Sbox[state[6]] ^ Sbox[state[11]];
+    tmp[13] = Sbox[state[12]] ^ Xtime2Sbox[state[1]] ^ Xtime3Sbox[state[6]] ^ Sbox[state[11]];
+    tmp[14] = Sbox[state[12]] ^ Sbox[state[1]] ^ Xtime2Sbox[state[6]] ^ Xtime3Sbox[state[11]];
+    tmp[15] = Xtime3Sbox[state[12]] ^ Sbox[state[1]] ^ Sbox[state[6]] ^ Xtime2Sbox[state[11]];
+
+    memcpy (state, tmp, sizeof(tmp));
+}
+
+// restore and un-mix each row in a column
+#if 0
+static void InvMixSubColumns (uchar *state)
+{
+    uchar tmp[4 * Nb];
+    int i;
+
+    // restore column 0
+    tmp[0] = XtimeE[state[0]] ^ XtimeB[state[1]] ^ XtimeD[state[2]] ^ Xtime9[state[3]];
+    tmp[5] = Xtime9[state[0]] ^ XtimeE[state[1]] ^ XtimeB[state[2]] ^ XtimeD[state[3]];
+    tmp[10] = XtimeD[state[0]] ^ Xtime9[state[1]] ^ XtimeE[state[2]] ^ XtimeB[state[3]];
+    tmp[15] = XtimeB[state[0]] ^ XtimeD[state[1]] ^ Xtime9[state[2]] ^ XtimeE[state[3]];
+
+    // restore column 1
+    tmp[4] = XtimeE[state[4]] ^ XtimeB[state[5]] ^ XtimeD[state[6]] ^ Xtime9[state[7]];
+    tmp[9] = Xtime9[state[4]] ^ XtimeE[state[5]] ^ XtimeB[state[6]] ^ XtimeD[state[7]];
+    tmp[14] = XtimeD[state[4]] ^ Xtime9[state[5]] ^ XtimeE[state[6]] ^ XtimeB[state[7]];
+    tmp[3] = XtimeB[state[4]] ^ XtimeD[state[5]] ^ Xtime9[state[6]] ^ XtimeE[state[7]];
+
+    // restore column 2
+    tmp[8] = XtimeE[state[8]] ^ XtimeB[state[9]] ^ XtimeD[state[10]] ^ Xtime9[state[11]];
+    tmp[13] = Xtime9[state[8]] ^ XtimeE[state[9]] ^ XtimeB[state[10]] ^ XtimeD[state[11]];
+    tmp[2]  = XtimeD[state[8]] ^ Xtime9[state[9]] ^ XtimeE[state[10]] ^ XtimeB[state[11]];
+    tmp[7]  = XtimeB[state[8]] ^ XtimeD[state[9]] ^ Xtime9[state[10]] ^ XtimeE[state[11]];
+
+    // restore column 3
+    tmp[12] = XtimeE[state[12]] ^ XtimeB[state[13]] ^ XtimeD[state[14]] ^ Xtime9[state[15]];
+    tmp[1] = Xtime9[state[12]] ^ XtimeE[state[13]] ^ XtimeB[state[14]] ^ XtimeD[state[15]];
+    tmp[6] = XtimeD[state[12]] ^ Xtime9[state[13]] ^ XtimeE[state[14]] ^ XtimeB[state[15]];
+    tmp[11] = XtimeB[state[12]] ^ XtimeD[state[13]] ^ Xtime9[state[14]] ^ XtimeE[state[15]];
+
+    for( i=0; i < 4 * Nb; i++ )
+	state[i] = InvSbox[tmp[i]];
+}
+#endif
+
+// encrypt/decrypt columns of the key
+// n.b. you can replace this with
+//      byte-wise xor if you wish.
+
+static void AddRoundKey (unsigned *state, unsigned *key)
+{
+    int idx;
+
+    for( idx = 0; idx < 4; idx++ )
+	state[idx] ^= key[idx];
+}
+
+static uchar Rcon[11] = {
+    0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36};
+
+// produce Nb bytes for each round
+static void ExpandKey (const uchar *key, uchar *expkey)
+{
+    uchar tmp0, tmp1, tmp2, tmp3, tmp4;
+    unsigned idx;
+
+    memcpy (expkey, key, Nk * 4);
+
+    for( idx = Nk; idx < Nb * (Nr + 1); idx++ ) {
+	tmp0 = expkey[4*idx - 4];
+	tmp1 = expkey[4*idx - 3];
+	tmp2 = expkey[4*idx - 2];
+	tmp3 = expkey[4*idx - 1];
+	if( !(idx % Nk) ) {
+	    tmp4 = tmp3;
+	    tmp3 = Sbox[tmp0];
+	    tmp0 = Sbox[tmp1] ^ Rcon[idx/Nk];
+	    tmp1 = Sbox[tmp2];
+	    tmp2 = Sbox[tmp4];
+	} else if( Nk > 6 && idx % Nk == 4 ) {
+	    tmp0 = Sbox[tmp0];
+	    tmp1 = Sbox[tmp1];
+	    tmp2 = Sbox[tmp2];
+	    tmp3 = Sbox[tmp3];
+	}
+
+	expkey[4*idx+0] = expkey[4*idx - 4*Nk + 0] ^ tmp0;
+	expkey[4*idx+1] = expkey[4*idx - 4*Nk + 1] ^ tmp1;
+	expkey[4*idx+2] = expkey[4*idx - 4*Nk + 2] ^ tmp2;
+	expkey[4*idx+3] = expkey[4*idx - 4*Nk + 3] ^ tmp3;
+    }
+}
+
+// encrypt one 128 bit block
+static void Encrypt (const uchar *in, const uchar *expkey, uchar *out)
+{
+    uchar state[Nb * 4];
+    unsigned round;
+
+    memcpy (state, in, Nb * 4);
+    AddRoundKey ((unsigned *)state, (unsigned *)expkey);
+
+    for( round = 1; round < Nr + 1; round++ ) {
+	if( round < Nr )
+	    MixSubColumns (state);
+	else
+	    ShiftRows (state);
+
+	AddRoundKey ((unsigned *)state, (unsigned *)expkey + round * Nb);
+    }
+
+    memcpy (out, state, sizeof(state));
+}
+
+int AES_set_encrypt_key(const unsigned char* key, int block_size,
+			AES_KEY * aes_key)
+{
+    if (block_size != 128)
+	return -1;
+
+    ExpandKey (key, aes_key->data);
+    return 0;
+}
+
+void AES_encrypt (const unsigned char *in, unsigned char *out,
+		  const AES_KEY *aes_key)
+{
+    Encrypt (in, aes_key->data, out);
+}
diff --git a/src/aes.h b/src/aes.h
new file mode 100644
index 0000000..d54fe03
--- /dev/null
+++ b/src/aes.h
@@ -0,0 +1,29 @@
+// advanced encryption standard
+// author: karl malbrain, malbrain@yahoo.com
+/*
+  This work, including the source code, documentation
+  and related data, is placed into the public domain.
+
+  The orginal author is Karl Malbrain.
+
+  THIS SOFTWARE IS PROVIDED AS-IS WITHOUT WARRANTY
+  OF ANY KIND, NOT EVEN THE IMPLIED WARRANTY OF
+  MERCHANTABILITY. THE AUTHOR OF THIS SOFTWARE,
+  ASSUMES _NO_ RESPONSIBILITY FOR ANY CONSEQUENCE
+  RESULTING FROM THE USE, MODIFICATION, OR
+  REDISTRIBUTION OF THIS SOFTWARE.
+*/
+#ifndef AES_H
+#define AES_H
+
+typedef struct {
+    unsigned char data[4 * 4 * (10 + 1)];
+} AES_KEY;
+
+int AES_set_encrypt_key(const unsigned char* key, int block_size,
+			AES_KEY * aes_key);
+
+void AES_encrypt (const unsigned char *in, unsigned char *out,
+		  const AES_KEY *aes_key);
+
+#endif
diff --git a/src/gstppssrc.c b/src/gstppssrc.c
index cb2beae..37c4fae 100644
--- a/src/gstppssrc.c
+++ b/src/gstppssrc.c
@@ -34,6 +34,7 @@
 //#include <gst/gst-i18n-plugin.h>
 #include <gst/base/gsttypefindhelper.h>
 #include "gstppssrc.h"
+#include "aes.h"
 
 GST_DEBUG_CATEGORY_STATIC (ppssrc_debug);
 #define GST_CAT_DEFAULT ppssrc_debug
@@ -252,6 +253,8 @@ gst_pps_src_dispose (GObject * gobject)
 
   g_free (src->location);
   src->location = NULL;
+  g_free (src->tvod_location);
+  src->tvod_location = NULL;
   g_free (src->oem);
   src->oem = NULL;
   g_free (src->terminal_type);
@@ -586,9 +589,10 @@ static gboolean
 gst_pps_src_open (GstPpsSrc *src)
 {
   int ret;
+  gchar *location = src->tvod_location ? src->tvod_location : src->location;
 
-  GST_DEBUG_OBJECT (src, "add item: (\"%s\")", src->location);
-  src->fd = ret = ppsvod_add_item (src->location, src->vip_flag);
+  GST_DEBUG_OBJECT (src, "add item: (\"%s\")", location);
+  src->fd = ret = ppsvod_add_item (location, src->vip_flag);
   if (ret < 0) {
     GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
 		       (NULL), ("Couldn't open resource"));
@@ -952,14 +956,115 @@ gst_pps_src_pad_linked_cb (GstPad *srcpad, GstPad *sinkpad,
   gst_caps_unref (caps);
 }
 
+static int
+gst_pps_src_hexlify (gchar *dst, const gchar *src, size_t len)
+{
+  const static unsigned char hex_char[] = "0123456789abcdef";
+  int i;
+
+  for (i = 0;i < len;i ++) {
+    unsigned char ch;
+    ch = (unsigned char) src[i];
+
+    dst[2 * i] = hex_char[(ch >> 0x04)];
+    dst[2 * i + 1] = hex_char[ch & 0x0F];
+  }
+
+  dst[2 * len] = 0;
+  return 2 * len;
+}
+
+static char* gst_pps_src_encrypt_uri (const char *url, int id)
+{
+  const static unsigned char key[16] = "884d977e1a515ae4";
+  int  len;
+  char *ptr;
+  char *dest;
+  char *plain;
+  char *cipher;
+  int i;
+  size_t size, left;
+  AES_KEY aes_key;
+
+  AES_set_encrypt_key (key, 128, &aes_key);
+
+  url += 6;
+  ptr = strchr (url, '/');
+  if (!ptr)
+    return NULL;
+
+  len = ptr - url;
+
+  /* align (len + 00000000/%d + '\0', 16) */
+  size = (len + 19 + 1 + 15) & ~15;
+  plain = g_malloc (size);
+  cipher = g_malloc (size);
+  memcpy (plain, url, len);
+  snprintf (&plain[len], size - len, "00000000/%d", id);
+
+  /* padding */
+  len = strlen (plain);
+  left = (size - len) % 16;
+  for (i = 0; i < left; i++)
+    plain[len + i] = '\0';
+
+  len += left;
+
+  for (i = 0; i < len / 16; i++)
+    AES_encrypt ((const unsigned char*)plain + 16 * i,
+		 (unsigned char*)cipher + 16 * i, &aes_key);
+
+  dest = g_malloc (7 + len * 2 + strlen (ptr) + 1);
+  strncpy (dest, "tvod://", 7);
+
+  gst_pps_src_hexlify (dest + 7, cipher, len);
+  strcat (dest, ptr);
+
+  g_free (plain);
+  g_free (cipher);
+  return dest;
+}
+
+static gchar*
+gst_pps_src_transform_uri (const gchar *pps, int id)
+{
+  gchar *uri, *gb_uri, *reencoded_uri;
+  gchar *result = NULL;
+
+  if (!g_str_has_prefix (pps, "pps://"))
+    return NULL;
+
+  uri = g_uri_unescape_string (pps, NULL);
+  if (g_utf8_validate (uri, -1, NULL))
+    gb_uri = g_convert (uri, strlen (uri), "gbk", "utf-8", NULL, NULL, NULL);
+  else
+    gb_uri = g_strdup (uri);
+  if (!gb_uri)
+    goto free_uri;
+
+  reencoded_uri = g_uri_escape_string
+    (gb_uri, G_URI_RESERVED_CHARS_ALLOWED_IN_PATH, FALSE);
+  if (!reencoded_uri)
+    goto free_gb_uri;
+
+  result = gst_pps_src_encrypt_uri (reencoded_uri, id);
+
+  g_free (reencoded_uri);
+free_gb_uri:
+  g_free (gb_uri);
+free_uri:
+  g_free (uri);
+  return result;
+}
+
 static gboolean
 gst_pps_src_set_location (GstPpsSrc * src, const gchar * uri)
 {
-  if (src->location) {
-    g_free (src->location);
-    src->location = NULL;
-  }
+  g_free (src->location);
+  g_free (src->tvod_location);
+
   src->location = g_strdup (uri);
+  src->tvod_location = gst_pps_src_transform_uri (uri, 0);
   src->location_changed = TRUE;
 
   return TRUE;
diff --git a/src/gstppssrc.h b/src/gstppssrc.h
index 159de58..dc629db 100644
--- a/src/gstppssrc.h
+++ b/src/gstppssrc.h
@@ -43,6 +43,7 @@ struct _GstPpsSrc {
   GstPushSrc element;
 
   gchar *location;             /* Full URI. */
+  gchar *tvod_location;        /* Transformed Full URI. */
   gchar *oem;                  /* OEM. */
   gchar *terminal_type;        /* Terminal Type. */
   gchar *device_id;            /* Device Id */