biss
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| biss [2017/01/26 11:07] – [BISS E] walkeradmin | biss [2017/01/26 11:15] – [Using BISS E] walkeradmin | ||
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| **When generating BISS-E keys for distribution to clients, you will know the CSW and the ID for each receiver. A software application then generates the ESW. ** | **When generating BISS-E keys for distribution to clients, you will know the CSW and the ID for each receiver. A software application then generates the ESW. ** | ||
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| **In the receiver, you must enter the ESW. The ID will already be burned into the receiver and in most cases will only be known to the system administrator generating the keys. The ESW and ID combination will be used by the receiver to internally derive the CSW. The receiver will only de-crypt correctly if the derived CSW is correct and matches the CSW used in the encoder. In most cases you cannot read the ID back from the receiver and so a receiver operator will not be aware of the value, but may be able to select from a few pre-stored ID’s.** | **In the receiver, you must enter the ESW. The ID will already be burned into the receiver and in most cases will only be known to the system administrator generating the keys. The ESW and ID combination will be used by the receiver to internally derive the CSW. The receiver will only de-crypt correctly if the derived CSW is correct and matches the CSW used in the encoder. In most cases you cannot read the ID back from the receiver and so a receiver operator will not be aware of the value, but may be able to select from a few pre-stored ID’s.** | ||
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| **In the above, the top key set is valid (1) and will provide the correct CSW. | **In the above, the top key set is valid (1) and will provide the correct CSW. | ||
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| **The encoder and decoder both normally need an ID and ESW to be entered. The only difference is that the ID in the decoder is normally pre-set and cannot be read or changed. This stops key-sharing between customers since an ESW will only work in a receiver with a correct ID, and if all the ID’s are unique, then an ESW will only work in the one, intended receiver and no other!** | **The encoder and decoder both normally need an ID and ESW to be entered. The only difference is that the ID in the decoder is normally pre-set and cannot be read or changed. This stops key-sharing between customers since an ESW will only work in a receiver with a correct ID, and if all the ID’s are unique, then an ESW will only work in the one, intended receiver and no other!** | ||
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| This is because knowledge of the BISS algorithm alone is not enough to recover the ID that our proprietary technique creates; To achieve this you must have knowledge of how the serial number is used to create the ID which is kept internal to TANDBERG Television. The TANDBERG BISS E software tool is used to create the keys in the normal way and is described in detail later in this section. The tool is able to detect automatically that a TTV serial number has been entered as the receiver ID from the number length, and will then apply the proprietary process that converts it into a standard-length ID. | This is because knowledge of the BISS algorithm alone is not enough to recover the ID that our proprietary technique creates; To achieve this you must have knowledge of how the serial number is used to create the ID which is kept internal to TANDBERG Television. The TANDBERG BISS E software tool is used to create the keys in the normal way and is described in detail later in this section. The tool is able to detect automatically that a TTV serial number has been entered as the receiver ID from the number length, and will then apply the proprietary process that converts it into a standard-length ID. | ||
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| + | ==== Using BISS E ==== | ||
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| + | Once the theory is understood, using BISS E is easy. To start, it will be necessary to configure the encoder and then configure the receivers. Both steps require the use of the TANDBERG (or equivalent) BISS E key generating software. This software is embedded within the encoder, and can be down-loaded onto a PC via an Ethernet connection. To do this, proceed as follows; | ||
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| + | - Establish an Ethernet connection between the PC and the encoder, as though preparing to access the web-browser in the normal way. | ||
| + | - When entering the IP address of the encoder into the web browser, follow with “/ | ||
| + | - Go to “save / load” tab and “download BISS key generator”. Run the installation wizard and install the software onto your computer. You should see the following user interface when the software is run. | ||
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biss.txt · Last modified: 2023/03/09 22:35 by 127.0.0.1