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thomas
2022-12-27 22:38:24 +01:00
commit c31a819e0f
5 changed files with 984 additions and 0 deletions
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patches/libdvbcsa.patch
+153
View File
@@ -0,0 +1,153 @@
diff --git a/src/dvbcsa/dvbcsa.h b/src/dvbcsa/dvbcsa.h
index c7e9c59..b63fb7d 100644
--- a/src/dvbcsa/dvbcsa.h
+++ b/src/dvbcsa/dvbcsa.h
@@ -93,6 +93,8 @@ void dvbcsa_bs_key_free(struct dvbcsa_bs_key_s *key);
void dvbcsa_bs_key_set(const dvbcsa_cw_t cw, struct dvbcsa_bs_key_s *key);
+void dvbcsa_bs_key_set_ecm(const unsigned char ecm, const dvbcsa_cw_t cw, struct dvbcsa_bs_key_s *key);
+
/** get maximum number of packet per batch */
unsigned int dvbcsa_bs_batch_size(void);
diff --git a/src/dvbcsa_bs_key.c b/src/dvbcsa_bs_key.c
index e2fcf55..d703325 100644
--- a/src/dvbcsa_bs_key.c
+++ b/src/dvbcsa_bs_key.c
@@ -63,3 +63,39 @@ dvbcsa_bs_key_set (const dvbcsa_cw_t cw, struct dvbcsa_bs_key_s *key)
}
}
+void
+dvbcsa_bs_key_set_ecm (const unsigned char ecm, const dvbcsa_cw_t cw, struct dvbcsa_bs_key_s *key)
+{
+ dvbcsa_keys_t kk;
+ int i;
+
+ /* precalculations for stream */
+
+ uint64_t ck = dvbcsa_load_le64(cw);
+
+ for (i = 0; i < DVBCSA_CWBITS_SIZE; i++)
+ key->stream[i] = (ck >> (i^4)) & 1 ? BS_VAL8(ff) : BS_VAL8(00);
+
+ /* precalculations for block */
+
+ dvbcsa_key_schedule_block_ecm(ecm, cw, kk);
+
+ for (i = 0; i < DVBCSA_KEYSBUFF_SIZE; i++)
+ {
+#if BS_BATCH_SIZE == 32
+ *(dvbcsa_u32_aliasing_t *)(key->block + i) = kk[i] * 0x01010101;
+
+#elif BS_BATCH_SIZE == 64
+ *(dvbcsa_u64_aliasing_t *)(key->block + i) = kk[i] * 0x0101010101010101ULL;
+
+#elif BS_BATCH_SIZE > 64 && BS_BATCH_SIZE % 64 == 0
+ uint64_t v = kk[i] * 0x0101010101010101ULL;
+ int j;
+
+ for (j = 0; j < BS_BATCH_BYTES / 8; j++)
+ *((dvbcsa_u64_aliasing_t *)(key->block + i) + j) = v;
+#else
+# error
+#endif
+ }
+}
diff --git a/src/dvbcsa_key.c b/src/dvbcsa_key.c
index 1ff17e0..bd2a2c1 100644
--- a/src/dvbcsa_key.c
+++ b/src/dvbcsa_key.c
@@ -585,3 +585,18 @@ dvbcsa_key_schedule_block(const dvbcsa_cw_t cw, uint8_t * kk)
kk[i*8+j] = (k[i]>>(j*8)) ^ i;
}
+void
+dvbcsa_key_schedule_block_ecm(const unsigned char ecm, const dvbcsa_cw_t cw, uint8_t * kk)
+{
+ uint64_t k[7];
+ int i, j;
+
+ k[6] = dvbcsa_load_le64_ecm(ecm, cw);
+ for (i = 6; i > 0; i--)
+ k[i - 1] = dvbcsa_key_permute_block(k[i]);
+
+ for (i = 0; i < 7; i++)
+ for (j = 0; j < 8; j++)
+ kk[i*8+j] = (k[i]>>(j*8)) ^ i;
+}
+
diff --git a/src/dvbcsa_pv.h b/src/dvbcsa_pv.h
index 83753b1..e59a70d 100644
--- a/src/dvbcsa_pv.h
+++ b/src/dvbcsa_pv.h
@@ -88,6 +88,26 @@ struct dvbcsa_key_s
extern const uint8_t dvbcsa_block_sbox[256];
+static const uint8_t csa_block_perm_ecm[256] =
+ {
+ 0x00,0x02,0x80,0x82,0x20,0x22,0xa0,0xa2, 0x04,0x06,0x84,0x86,0x24,0x26,0xa4,0xa6,
+ 0x40,0x42,0xc0,0xc2,0x60,0x62,0xe0,0xe2, 0x44,0x46,0xc4,0xc6,0x64,0x66,0xe4,0xe6,
+ 0x01,0x03,0x81,0x83,0x21,0x23,0xa1,0xa3, 0x05,0x07,0x85,0x87,0x25,0x27,0xa5,0xa7,
+ 0x41,0x43,0xc1,0xc3,0x61,0x63,0xe1,0xe3, 0x45,0x47,0xc5,0xc7,0x65,0x67,0xe5,0xe7,
+ 0x08,0x0a,0x88,0x8a,0x28,0x2a,0xa8,0xaa, 0x0c,0x0e,0x8c,0x8e,0x2c,0x2e,0xac,0xae,
+ 0x48,0x4a,0xc8,0xca,0x68,0x6a,0xe8,0xea, 0x4c,0x4e,0xcc,0xce,0x6c,0x6e,0xec,0xee,
+ 0x09,0x0b,0x89,0x8b,0x29,0x2b,0xa9,0xab, 0x0d,0x0f,0x8d,0x8f,0x2d,0x2f,0xad,0xaf,
+ 0x49,0x4b,0xc9,0xcb,0x69,0x6b,0xe9,0xeb, 0x4d,0x4f,0xcd,0xcf,0x6d,0x6f,0xed,0xef,
+ 0x10,0x12,0x90,0x92,0x30,0x32,0xb0,0xb2, 0x14,0x16,0x94,0x96,0x34,0x36,0xb4,0xb6,
+ 0x50,0x52,0xd0,0xd2,0x70,0x72,0xf0,0xf2, 0x54,0x56,0xd4,0xd6,0x74,0x76,0xf4,0xf6,
+ 0x11,0x13,0x91,0x93,0x31,0x33,0xb1,0xb3, 0x15,0x17,0x95,0x97,0x35,0x37,0xb5,0xb7,
+ 0x51,0x53,0xd1,0xd3,0x71,0x73,0xf1,0xf3, 0x55,0x57,0xd5,0xd7,0x75,0x77,0xf5,0xf7,
+ 0x18,0x1a,0x98,0x9a,0x38,0x3a,0xb8,0xba, 0x1c,0x1e,0x9c,0x9e,0x3c,0x3e,0xbc,0xbe,
+ 0x58,0x5a,0xd8,0xda,0x78,0x7a,0xf8,0xfa, 0x5c,0x5e,0xdc,0xde,0x7c,0x7e,0xfc,0xfe,
+ 0x19,0x1b,0x99,0x9b,0x39,0x3b,0xb9,0xbb, 0x1d,0x1f,0x9d,0x9f,0x3d,0x3f,0xbd,0xbf,
+ 0x59,0x5b,0xd9,0xdb,0x79,0x7b,0xf9,0xfb, 0x5d,0x5f,0xdd,0xdf,0x7d,0x7f,0xfd,0xff
+};
+
void dvbcsa_block_decrypt (const dvbcsa_keys_t key, const dvbcsa_block_t in, dvbcsa_block_t out);
void dvbcsa_block_encrypt (const dvbcsa_keys_t key, const dvbcsa_block_t in, dvbcsa_block_t out);
@@ -95,6 +115,7 @@ void dvbcsa_stream_xor (const dvbcsa_cw_t cw, const dvbcsa_block_t iv,
uint8_t *stream, unsigned int len);
void dvbcsa_key_schedule_block(const dvbcsa_cw_t cw, uint8_t * kk);
+void dvbcsa_key_schedule_block_ecm(const unsigned char ecm, const dvbcsa_cw_t cw, uint8_t * kk);
DVBCSA_INLINE static inline void
dvbcsa_xor_64 (uint8_t *b, const uint8_t *a)
@@ -141,6 +162,33 @@ dvbcsa_load_le64(const uint8_t *p)
#endif
}
+DVBCSA_INLINE static inline uint64_t
+dvbcsa_load_le64_ecm(const unsigned char ecm, const uint8_t *p)
+{
+ dvbcsa_block_t W;
+ memcpy(W, p, sizeof(W));
+ if (ecm == 4)
+ {
+ W[0] = csa_block_perm_ecm[p[0]];
+ W[4] = csa_block_perm_ecm[p[4]];
+ }
+#if defined(DVBCSA_ENDIAN_LITTLE)
+ uint64_t i;
+ memcpy(&i, W, 8);
+ return i;
+#else
+ return (uint64_t)( ((uint64_t)W[7] << 56) |
+ ((uint64_t)W[6] << 48) |
+ ((uint64_t)W[5] << 40) |
+ ((uint64_t)W[4] << 32) |
+ ((uint64_t)W[3] << 24) |
+ ((uint64_t)W[2] << 16) |
+ ((uint64_t)W[1] << 8 ) |
+ (uint64_t)W[0]
+ );
+#endif
+}
+
DVBCSA_INLINE static inline void
dvbcsa_store_le64(uint8_t *p, const uint64_t w)
{
patches/tvheadend43.patch
+100
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@@ -0,0 +1,100 @@
diff --git a/src/descrambler/descrambler.c b/src/descrambler/descrambler.c
index 71cc9ebd6..b5c46e329 100644
--- a/src/descrambler/descrambler.c
+++ b/src/descrambler/descrambler.c
@@ -966,12 +966,12 @@ key_flush( th_descrambler_runtime_t *dr, th_descrambler_key_t *tk, uint8_t chang
/* update the keys */
if (changed & 1) {
debug2("%p: even key[%d] set for decoder", dr, tk->key_pid);
- tvhcsa_set_key_even(&tk->key_csa, tk->key_data[0]);
+ tvhcsa_set_key_even(&tk->key_csa, tk->key_data[0], dr->dr_ecm);
tk->key_valid |= 0x40;
}
if (changed & 2) {
debug2("%p: odd key[%d] set for decoder", dr, tk->key_pid);
- tvhcsa_set_key_odd(&tk->key_csa, tk->key_data[1]);
+ tvhcsa_set_key_odd(&tk->key_csa, tk->key_data[1], dr->dr_ecm);
tk->key_valid |= 0x80;
}
}
@@ -1371,6 +1371,7 @@ descrambler_table_callback
}
}
}
+ dr->dr_ecm = (ptr[2] - ptr[4]) == 4 ? ptr[0x15] : 0;
tvhtrace(LS_DESCRAMBLER, "ECM message %02x:%02x (section %d, len %d, pid %d) for service \"%s\"",
ptr[0], ptr[1], des->number, len, mt->mt_pid, t->s_dvb_svcname);
}
diff --git a/src/descrambler/descrambler.h b/src/descrambler/descrambler.h
index ac5ff312c..697adfe04 100644
--- a/src/descrambler/descrambler.h
+++ b/src/descrambler/descrambler.h
@@ -103,6 +103,7 @@ typedef struct th_descrambler_runtime {
int64_t dr_ecm_start[2];
int64_t dr_ecm_last_key_time;
int64_t dr_ecm_key_margin;
+ uint8_t dr_ecm;
int64_t dr_last_err;
int64_t dr_force_skip;
th_descrambler_key_t dr_keys[DESCRAMBLER_MAX_KEYS];
diff --git a/src/descrambler/tvhcsa.c b/src/descrambler/tvhcsa.c
index 942ce92b5..664523665 100644
--- a/src/descrambler/tvhcsa.c
+++ b/src/descrambler/tvhcsa.c
@@ -220,12 +220,12 @@ tvhcsa_set_type( tvhcsa_t *csa, struct mpegts_service *s, int type )
}
-void tvhcsa_set_key_even( tvhcsa_t *csa, const uint8_t *even )
+void tvhcsa_set_key_even( tvhcsa_t *csa, const uint8_t *even, const uint8_t ecm)
{
switch (csa->csa_type) {
case DESCRAMBLER_CSA_CBC:
#if ENABLE_DVBCSA
- dvbcsa_bs_key_set(even, csa->csa_key_even);
+ dvbcsa_bs_key_set_ecm(ecm, even, csa->csa_key_even);
#endif
break;
case DESCRAMBLER_DES_NCB:
@@ -241,13 +241,13 @@ void tvhcsa_set_key_even( tvhcsa_t *csa, const uint8_t *even )
}
}
-void tvhcsa_set_key_odd( tvhcsa_t *csa, const uint8_t *odd )
+void tvhcsa_set_key_odd( tvhcsa_t *csa, const uint8_t *odd, const uint8_t ecm )
{
assert(csa->csa_type);
switch (csa->csa_type) {
case DESCRAMBLER_CSA_CBC:
#if ENABLE_DVBCSA
- dvbcsa_bs_key_set(odd, csa->csa_key_odd);
+ dvbcsa_bs_key_set_ecm(ecm, odd, csa->csa_key_odd);
#endif
break;
case DESCRAMBLER_DES_NCB:
diff --git a/src/descrambler/tvhcsa.h b/src/descrambler/tvhcsa.h
index 855de5acc..24eb729cb 100644
--- a/src/descrambler/tvhcsa.h
+++ b/src/descrambler/tvhcsa.h
@@ -66,8 +66,8 @@ typedef struct tvhcsa
int tvhcsa_set_type( tvhcsa_t *csa, struct mpegts_service *s, int type );
-void tvhcsa_set_key_even( tvhcsa_t *csa, const uint8_t *even );
-void tvhcsa_set_key_odd ( tvhcsa_t *csa, const uint8_t *odd );
+void tvhcsa_set_key_even( tvhcsa_t *csa, const uint8_t *even, const uint8_t ecm );
+void tvhcsa_set_key_odd ( tvhcsa_t *csa, const uint8_t *odd, const uint8_t ecm );
void tvhcsa_init ( tvhcsa_t *csa );
void tvhcsa_destroy ( tvhcsa_t *csa );
@@ -76,8 +76,8 @@ void tvhcsa_destroy ( tvhcsa_t *csa );
static inline int tvhcsa_set_type( tvhcsa_t *csa, struct mpegts_service *s, int type ) { return -1; }
-static inline void tvhcsa_set_key_even( tvhcsa_t *csa, const uint8_t *even ) { };
-static inline void tvhcsa_set_key_odd ( tvhcsa_t *csa, const uint8_t *odd ) { };
+static inline void tvhcsa_set_key_even( tvhcsa_t *csa, const uint8_t *even, const uint8_t ecm ) { };
+static inline void tvhcsa_set_key_odd ( tvhcsa_t *csa, const uint8_t *odd, const uint8_t ecm ) { };
static inline void tvhcsa_init ( tvhcsa_t *csa ) { };
static inline void tvhcsa_destroy ( tvhcsa_t *csa ) { };