[powervu] Add emm unmask mode 4

oscam-emu · Mar 27, 2024 · 51b1f79 · 51b1f79 · WXbet · Mar 28, 2024
1 parent af73dde
commit 51b1f79
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Showing 2 changed files with 63 additions and 1 deletion.
diff --git a/module-emulator-osemu.h b/module-emulator-osemu.h
@@ -4,7 +4,7 @@
 #ifdef WITH_EMU
 
 // Version info
-#define EMU_VERSION 800
+#define EMU_VERSION 801
 
 #define EMU_MAX_CHAR_KEYNAME 12
 #define EMU_KEY_FILENAME "SoftCam.Key"

diff --git a/module-emulator-powervu.c b/module-emulator-powervu.c
@@ -2304,6 +2304,31 @@ static void create_data_unmask_emm_mode_03(uint8_t *emmBody, uint8_t *data)
 	}
 }
 
+static void create_data_unmask_emm_mode_04(uint8_t *emmBody, uint8_t *data)
+{
+	int i;
+	uint8_t padding[] =
+	{
+		0x56, 0xC7, 0x05, 0x66, 0xC7, 0x4E, 0xC1, 0xA0,
+		0x9E, 0xD1, 0xFE, 0x92, 0xE8, 0xCD, 0x5F, 0xAF,
+		0xCF, 0xE5, 0xE9, 0x9E, 0x7A, 0x38, 0xAC, 0x68
+	};
+
+	memcpy(data + 0x28, padding, 0x18);
+
+	for (i = 0; i < 5; i++)
+	{
+		data[0 + i * 8] = emmBody[0x06 + i * 0x1B];
+		data[1 + i * 8] = emmBody[0x19 + i * 0x1B];
+		data[2 + i * 8] = emmBody[0x16 + i * 0x1B];
+		data[3 + i * 8] = emmBody[0x0A + i * 0x1B];
+		data[4 + i * 8] = emmBody[0x13 + i * 0x1B];
+		data[5 + i * 8] = emmBody[0x05 + i * 0x1B];
+		data[6 + i * 8] = emmBody[0x14 + i * 0x1B];
+		data[7 + i * 8] = emmBody[0x18 + i * 0x1B];
+	}
+}
+
 static uint8_t get_mode_unmask_emm(uint8_t *extraData)
 {
 	uint16_t data = ((uint16_t)extraData[0] << 8) + extraData[1];
@@ -2442,6 +2467,43 @@ static void unmask_emm(uint8_t *emm)
 			emm[0x13 + 0x0C + i * 0x1B] ^= mask[0x0F];
 		}
 	}
+	else if (modeUnmask == 0x04)
+	{
+		for (i = 0; i < 5; i++)
+		{
+			emm[0x13 + 0x05 + i * 0x1B] -= emm[0x13 + 0x04 + i * 0x1B];
+			emm[0x13 + 0x06 + i * 0x1B] -= emm[0x13 + 0x0B + i * 0x1B];
+			emm[0x13 + 0x0A + i * 0x1B] -= emm[0x13 + 0x17 + i * 0x1B];
+			emm[0x13 + 0x13 + i * 0x1B] -= emm[0x13 + 0x1A + i * 0x1B];
+			emm[0x13 + 0x14 + i * 0x1B] -= emm[0x13 + 0x0E + i * 0x1B];
+			emm[0x13 + 0x16 + i * 0x1B] -= emm[0x13 + 0x15 + i * 0x1B];
+			emm[0x13 + 0x18 + i * 0x1B] -= emm[0x13 + 0x08 + i * 0x1B];
+			emm[0x13 + 0x19 + i * 0x1B] -= emm[0x13 + 0x12 + i * 0x1B];
+		}
+
+		create_data_unmask_emm_mode_04(emm + 0x13, data);
+		create_hash_mode_04(data, mask);
+
+		for (i = 0; i < 5; i++)
+		{
+			emm[0x13 + 0x0B + i * 0x1B] ^= mask[0x00];
+			emm[0x13 + 0x12 + i * 0x1B] ^= mask[0x01];
+			emm[0x13 + 0x15 + i * 0x1B] ^= mask[0x02];
+			emm[0x13 + 0x17 + i * 0x1B] ^= mask[0x03];
+			emm[0x13 + 0x1A + i * 0x1B] ^= mask[0x04];
+			emm[0x13 + 0x04 + i * 0x1B] ^= mask[0x05];
+			emm[0x13 + 0x0E + i * 0x1B] ^= mask[0x06];
+			emm[0x13 + 0x08 + i * 0x1B] ^= mask[0x07];
+			emm[0x13 + 0x09 + i * 0x1B] ^= mask[0x08];
+			emm[0x13 + 0x0C + i * 0x1B] ^= mask[0x09];
+			emm[0x13 + 0x03 + i * 0x1B] ^= mask[0x0A];
+			emm[0x13 + 0x0F + i * 0x1B] ^= mask[0x0B];
+			emm[0x13 + 0x10 + i * 0x1B] ^= mask[0x0C];
+			emm[0x13 + 0x07 + i * 0x1B] ^= mask[0x0D];
+			emm[0x13 + 0x0D + i * 0x1B] ^= mask[0x0E];
+			emm[0x13 + 0x11 + i * 0x1B] ^= mask[0x0F];
+		}
+	}
 	else
 	{
 		cs_log("A new unknown emm mode [%d] is in use.", modeUnmask);