TH44256B - The process for protecting the payload transmitted from the secured fragment to decoders and protection systems that use it. - Google Patents

Abstract

DC60 (30/07/41) This invention related to Process for protecting against data breaches sent from pieces Secure section to decryption device and protection system Using such a process, the data section is protected. by generating code inside parts that is secured. The data is sent to the decryption device. and by decoding this section inside the decoder this invention Applied to conditional entry system Figure 1 This invention related to Process for protecting against data breaches which is sent from the secure part to the decryption device and protection system Using such a process, the data section is protected. by generating code inside parts that is secured. The data segment is sent to the decryption device. and by decoding this section within the decoder device this invention Apply to conditional entry system

Claims (3)

1. The process for transmitting data from the simplification device (3) contained in the safety piece (1) from the secure piece (1) to the decoding device (6). The instruction set selected by the system operator At least one set of conditions. Where it is unique, it consists of the first step of the code generation. Secured section (1) The data comes from the thermal damper (3) under the action of the first (K) key and the second decryption procedure. In the decoder device (6) the data section has been changed to code. Obtained from step one Under the second key (K) execution of the second key (K) 2. The unique Claim 1 process provides one step consisting of a random word generation (AL) process in the decoding device. And the process of generating a random word code (AL) under the third key (K1) operation, in the same manner as the first and unique key generation. The second step Consists of steps Generates a random command code (AL) in the same way as generated by Key Order (K) 3. The process in claim 1, where the unique nature of the procedure, consists of the process of generating random words (AL) in such random manner. It is displayed with the sequence number (K) in the simplification device (3) during the period of Simplification And where it is unique, let the procedure go Then there is a procedure for generating a random word code (AL) under the execution of the fourth key (K2) in the same way as Data creation It consists of a random word (E (AL)) that has been converted to a code and a procedure that consists of the transcription of a random word (E (AL)) that is converted to the code in a transcribed random way. It consists of a second (K) key 4. The process in claim 1, where unique, the first (K) key is permanently stored on the subscriber card (1) and where it is secured. Specific The second key (K) is permanently stored in the decryption device (6). 5. Secured piece (1) containing the device. Simplify (3) To reduce the complexity of the information that is received under the execution of control words (CWi), such information is defined as a set of instructions chosen by the user of the system at least one set of conditions. Where a specific characteristic is to be composed of devices (10) for generating the data code received from the simplified device (3), which is then simplified under the operation of generating keys. First order code (K) 6. Secure part (1) In Claim 5, where unique features are to contain equipment for Generate the key (13) to generate the first (K) key under the random word (AL) action. 7. The secure piece (1) in claim 5 at which it determines. Characteristic given It consists of a decoding device (15) to generate a first (K) key under the execution of an arbitrary key (K2). 8. Decoder device (6) to decode the information coming from Secured parts (1) This refers to at least one set of instructions selected by the user of the Conditional Access System. Where it is characterized by a decryption device (9) to decrypt the information coming from the secured fragment (1) under the operation of the second key (K). Reduced complexity and is converted to code under the execution of a key sequence number one (K). 9. Decoding device (6) in claim 8, which is characterized by a random word-generating device ( 11) Able to generate at least 1 random word (AL) and a device for generating a decryption key (12) from random words that are generated in such a way that the decryption key. Derived from such equipment (12) is the second key (K) 1. 1. Assembling is a secure part (1) and a decoder (6) corresponding to this safety part, where unique characteristics are given. The safe part is the secure part (1) in claim 6 and where the decoder (6) is unique to the decoder. In claim No. 9 1 2. Assembling the secure part (1) and decoding device (6) corresponding to this secure part, where the specific characteristics of the secure part are set. Secured section (1) in Clause 7 and where unique features are assigned. Decoder Device (6) is the decoder device in Clause 10 1. 3. The implementation of Clause 11 or Article 12, which assigns a specific characteristic to the second key. Is the unique key For such assembly (13 claims, 3 pages, 4 photos)