TWI813259B - Algorithm-bound method on non-volatile random access memory and algorithm-bound circuit using the same - Google Patents

Abstract

An algorithm-bound method on non-volatile random access memory (NVRAM) and an algorithm-bound circuit are provided in the present invention. The method includes: providing a NVRAM, electrically connected to a NVRAM port of a control IC, stored a UUID; providing a secure area on the NVRAM; and providing a data area for storing a program data of an algorithm; performing an activation procedure, including: reading the UUID; generating an encrypted certificate by the operating the UUID according to a certificate encryption operation provided by the algorithm; and writing the encrypted certificate to the secure area.

Description

Method of algorithm binding on non-volatile random access memory and algorithm circuit using the same

The present invention relates to an algorithm binding technology. Furthermore, the present invention relates to an algorithm binding method on a non-volatile random access memory and an algorithm circuit using the algorithm binding method.

Algorithm, in mathematics and computer science, refers to a defined, limited set of steps or sequences in which a computer can execute its instructions. It is often used for calculations, data processing, and automatic reasoning. Algorithms are commonly used in general applications, such as face recognition, speech recognition, etc. In the previous technology, the algorithm was bound to the main control integrated circuit. Figure 1 is a circuit block diagram of an algorithm circuit in the prior art. Please refer to Figure 1. This algorithm circuit includes a main control integrated circuit 101 with a verification fuse and a non-volatile random access memory 102. The algorithm is generally stored in the non-volatile random access memory 102. A plurality of verification fuses (fuses) are provided on the main control integrated circuit 101 . Before executing the client's algorithm, it will first confirm whether the blown fuse of the main control integrated circuit 101 is correct. When the blown fuse is correct, the algorithm will be executed. In this way, the algorithm is bound to the specific main control integrated circuit 101.

In addition, different algorithms will have different fuse values, and the fuse value of the main control integrated circuit 101 is determined during the chip probing (CP) stage. However, recently there has been a shortage of chips all over the world. Using this method, the fuse must be blown in advance, which will cause difficulty in stocking the main control integrated circuit 101. This makes the shortage of chips more serious.

An object of the present invention is to provide a method for binding an algorithm on a non-volatile random access memory and an algorithm circuit using the same, so as to bind an algorithm to a non-volatile random access memory. Instead of binding to the main control integrated circuit, it reduces the difficulty of stocking the integrated circuit and avoids being cracked.

In view of this, the present invention provides a method for performing algorithm binding on a non-volatile random access memory. The method for performing algorithm binding on a non-volatile random access memory includes: providing a non-volatile random access memory. The non-volatile random access memory is electrically connected to a non-volatile random access memory connection port of a main control integrated circuit, wherein the non-volatile random access memory stores a universally unique identifier (Universally Unique Identifier, UUID); provide a security block in the non-volatile random access memory; and provide a data block in the non-volatile random access memory for storing program data of an algorithm; perform a The activation process includes: reading the universal unique identification code; operating the universal unique identification code according to the certificate encryption operation provided by the algorithm to generate an encrypted certificate; and writing the encrypted certificate into the secure block.

The invention further provides an algorithm circuit, which includes a main control integrated circuit and a non-volatile random access memory. The main control integrated circuit has a non-volatile random access memory connection port. The non-volatile random access memory is electrically connected to the non-volatile random access memory port and stores a universal unique identifier (UUID). The non-volatile random access memory includes a security block. and a data block. This data block is used to store program data for an algorithm. The activation procedure of the algorithm circuit includes: electrically connecting a card opening circuit; reading the above-mentioned universal unique identification code by the above-mentioned card opening circuit; and calculating the universal unique identification code according to the certificate encryption operation provided by the above-mentioned algorithm to generate a Encryption credentials; write the above encryption credentials into this secure block.

According to a preferred embodiment of the present invention, a method for performing algorithm binding on a non-volatile random access memory and an algorithm circuit using the same, when the above algorithm circuit is started, an activation process is performed, including: Read the encryption certificate of the above-mentioned security block; read the above-mentioned universal unique identification code; perform verification of the above-mentioned encryption certificate based on the above-mentioned universal unique identification code; and when the verification of the encryption certificate fails, perform an inactivation process (inactivation progress) .

The spirit of the present invention is to use a non-volatile random access memory with a universal unique identification code and a security block. In the security block, an encryption certificate corresponding to the universal unique identification code is configured, thereby setting the algorithm list at In the non-volatile random access memory, in this way, the main control integrated circuit does not need to blow the verification fuse, making the main control integrated circuit stocking more flexible and easing the difficulty of stocking the integrated circuit.

In order to make the above and other objects, features and advantages of the present invention more clearly understood, preferred embodiments are described in detail below along with the accompanying drawings.

Figure 2 is a circuit block diagram of an algorithm circuit according to a preferred embodiment of the present invention. Please refer to Figure 2. This algorithm circuit includes a main control integrated circuit 201 and a non-volatile random access memory 202. Figure 3 is a schematic storage diagram of the non-volatile random access memory 202 of the algorithm circuit according to a preferred embodiment of the present invention. Please refer to Figures 2 and 3. In this embodiment, the non-volatile random access memory 202 includes a security block 301 and a data block 302, and the inside of the non-volatile random access memory 202 For example, a Universally Unique Identifier (UUID) is stored. In this embodiment, the security block 301 is, for example, a one-time programmable memory (One Time Programmable memory, OTP). Generally speaking, the above-mentioned UUID is stored in Read Only Memory (ROM), so the universal unique identifier cannot be changed.

In this embodiment, the main control integrated circuit 201 does not need to have a verification fuse as in the prior art. That is to say, the main control integrated circuit 201 of the preferred embodiment of the present invention may have a verification fuse (fuse) or may not have a verification fuse (fuse). In addition, in terms of hardware implementation, the algorithm of this embodiment is bound to the above-mentioned non-volatile random access memory 202, for example. Even if an interested person copies the algorithm stored in the non-volatile random access memory 202, the copied algorithm cannot be executed. In addition, in order to achieve the binding effect, in this embodiment, a similar "card opening" procedure needs to be performed.

Figure 4 is a flowchart of a binding procedure of a method for performing algorithm binding on a non-volatile random access memory according to a preferred embodiment of the present invention. Please refer to Figure 4. The binding procedure of this algorithm binding method on non-volatile random access memory includes the following steps:

Step S401: The binding procedure starts.

Step S402: Electrically connect the algorithm circuit to a card opening circuit.

Step S403: The card opening circuit reads the universal unique identification code (UUID) in the algorithm circuit.

Step S404: According to the certificate encryption operation provided by the algorithm, the universal unique identification code is calculated to generate an encrypted certificate. In this embodiment, the encryption certificate uses, for example, a symmetric encryption algorithm, Data Encryption Standard (DES) or Advanced Encryption Standard (AES), etc., and the universal unique identification code is obtained by performing a certificate encryption operation. The above encryption credentials. However, the present invention does not limit the use of the above encryption algorithm.

Step S405: Write the encryption certificate into the security block.

Step S406: The binding procedure ends.

After the binding is completed as in the above embodiment, this algorithm circuit can be used. However, an activation procedure is still required each time it is used.

Figure 5 is a flowchart illustrating the activation procedure of the algorithm binding method on the non-volatile random access memory according to a preferred embodiment of the present invention. Please refer to Figure 5. The activation process of this algorithm binding method on non-volatile random access memory includes the following steps:

Step S501: The activation process starts.

Step S502: Read the encrypted certificate data of the security block in the non-volatile random access memory;

Step S503: Read the universal unique identification code;

Step S504: Perform verification of the encryption certificate based on the read universal unique identification code and the encryption certificate data of the above-mentioned security block.

Step S505: Determine whether the verification is successful. If the verification is successful, proceed to step S506; if the verification fails, proceed to step S507. In this embodiment, the above-mentioned steps S504 and S505 are, for example, executing a special verification instruction library to determine and verify the encrypted certificate data in the read security block.

Step S506: When the verification of the encrypted certificate is successful, an activation progress is performed. The algorithm circuit can then start executing the algorithm program stored in the data block 302.

Step S507: When the verification of the encrypted certificate fails, an inactivation progress is performed. The above-mentioned blocking activity procedures include issuing error messages, error lights, or directly shutting down algorithm circuits.

Step S508: The activation program ends.

To sum up, the spirit of the present invention is to use a non-volatile random access memory with a universal unique identification code and a security block, and configure the encryption certificate corresponding to the universal unique identification code in the security block, thereby The algorithm is bound in the non-volatile random access memory. In this way, the main control integrated circuit does not need to blow the verification fuse, making the main control integrated circuit stocking more flexible and easing the difficulty of stocking the integrated circuit.

The specific examples provided in the detailed description of the preferred embodiments are only used to conveniently illustrate the technical content of the present invention, and are not intended to limit the present invention to the above-mentioned embodiments in a narrow sense. Without exceeding the spirit of the present invention and the following patent application The various changes and implementations made within the scope of the invention all fall within the scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the appended patent application scope.

101: Main control integrated circuit with verification fuse 102:Non-volatile random access memory 201: Main control integrated circuit 202: Non-volatile random access memory with universal unique identification code 301:Security block 302: Data block S401～S406: Binding procedure of the algorithm binding method on non-volatile random access memory according to a preferred embodiment of the present invention S501～S508: The activation procedure of the algorithm binding method on the non-volatile random access memory according to a preferred embodiment of the present invention

Figure 1 is a circuit block diagram of an algorithm circuit in the prior art. Figure 2 is a circuit block diagram of an algorithm circuit according to a preferred embodiment of the present invention. Figure 3 is a schematic storage diagram of the non-volatile random access memory 202 of the algorithm circuit according to a preferred embodiment of the present invention. Figure 4 is a flowchart of a binding procedure of a method for performing algorithm binding on a non-volatile random access memory according to a preferred embodiment of the present invention. Figure 5 is a flowchart illustrating the activation procedure of the algorithm binding method on the non-volatile random access memory according to a preferred embodiment of the present invention.

201: Main control integrated circuit

202: Non-volatile random access memory with universal unique identification code

Claims (16)

An algorithm circuit includes: a main control integrated circuit having a non-volatile random access memory connection port; and a non-volatile random access memory electrically connected to the non-volatile random access memory connection The port stores a Universally Unique Identifier (UUID), including: a security block; and a data block used to store the program data of an algorithm, in which the algorithm of the algorithm circuit is bound The procedure includes: electrically connecting a card opening circuit; reading the universal unique identification code from the card opening circuit; operating the universal unique identification code according to the certificate encryption operation provided by the algorithm to generate an encrypted certificate; The cryptographic credentials are written into the secure block. The algorithm circuit described in claim 1, wherein the security block is a one-time programmable memory block. The algorithm circuit described in claim 1, wherein when the algorithm circuit is activated, an activation process is performed, including: reading the encryption certificate of the security block; reading the universal unique identification code; according to The universal unique identifier is used to verify the encryption certificate; and when the verification of the encryption certificate fails, an inactivation progress is performed. For example, the algorithm circuit described in claim 3, wherein the activation process further includes: when the verification of the encryption certificate is successful, an activation progress is performed. A method for performing algorithm binding on a non-volatile random access memory, including: providing a non-volatile random access memory and electrically connecting the non-volatile random access memory of a main control integrated circuit The port stores a Universally Unique Identifier (UUID); provides a security block in the non-volatile random access memory; and Provide a data block in the non-volatile random access memory for storing program data of an algorithm; perform an algorithm binding, including: reading the universal unique identification code; The certificate encryption operation is performed on the universal unique identification code to generate an encrypted certificate; the encrypted certificate is written into the secure block. The method of algorithm binding on non-volatile random access memory as described in request item 5, wherein the security block is a one-time programmable memory block (one time programmable memory) . The method for performing algorithm binding on a non-volatile random access memory as described in claim 5, wherein when the algorithm circuit is activated, an activation procedure is performed, including: reading the security block the encryption certificate; read the universal unique identification code; perform verification of the encryption certificate based on the universal unique identification code; and when the verification of the encryption certificate fails, perform an inactivation progress. As described in request item 7, the method of binding an algorithm on a non-volatile random access memory, wherein the activation process further includes: when the verification of the encryption certificate is successful, an activation progress is performed. ). An algorithm circuit includes: a main control integrated circuit having a non-volatile random access memory connection port; and a non-volatile random access memory electrically connected to the non-volatile random access memory connection The port stores a Universally Unique Identifier (UUID), including: a security block, which stores an encryption certificate; and a data block, which is used to store the program data of an algorithm. Among them, when this algorithm When the circuit is started, an activation procedure is performed, including: reading the encryption certificate of the security block; reading the universal unique identification code; performing verification of the encryption certificate based on the universal unique identification code; and when the encryption certificate If the verification fails, an inactivation progress process is performed. The algorithm circuit described in claim 9, wherein the security block is a one-time programmable memory block. For example, the algorithm circuit described in claim 9, wherein the activation procedure of the algorithm circuit includes: electrically connecting a card opening circuit; reading the universal unique identification code by the card opening circuit; and providing the algorithm according to the algorithm. The certificate encryption operation is performed on the universal unique identification code to generate the encryption certificate; the encryption certificate is written into the secure block. For example, in the algorithm circuit described in claim 9, the activation process further includes: when the verification of the encryption certificate is successful, an activation progress is performed. A method for performing algorithm binding on a non-volatile random access memory, including: providing a non-volatile random access memory and electrically connecting the non-volatile random access memory of a main control integrated circuit The connection port stores a Universally Unique Identifier (UUID); in the non-volatile random access memory, a secure block is provided for storing an encryption certificate; and in the non-volatile random access memory In the body, a data block is provided to store the program data of an algorithm; when the program of the algorithm is executed, an activation process is performed, including: reading the encryption certificate of the security block; reading The universal unique identifier; perform verification of the encryption certificate based on the universal unique identification code; and when the verification of the encryption certificate fails, perform an inactivation progress. The method of algorithm binding on non-volatile random access memory as described in request item 13, wherein the security block is a one-time programmable memory block (one time programmable memory) . For example, the method for binding an algorithm on a non-volatile random access memory as described in request item 13 further includes: reading the universal unique identification code; encrypting the certificate based on the certificate provided by the algorithm, The universal unique identifier is calculated to generate an encryption certificate; the encryption certificate is written into the secure block. As described in request item 13, the method for binding an algorithm on a non-volatile random access memory, wherein the activation process further includes: when the verification of the encryption certificate is successful, an activation progress is performed. ).