Device and method for encrypting and decrypting fpga code stream

Abstract

The application discloses a device and method for encrypting and decrypting FPGA code streams. The device includes: configuring data code streams, and judging whether the data code streams need to be encrypted; If the cipher stream and the first encrypted synchronization word are encrypted by the second encryption method, the second encrypted cipher stream and the second encrypted synchronization word are generated; the encrypted data code stream is received, and whether there is encryption in the encrypted data code stream is detected. Synchronization word; if the first encrypted synchronization word is detected, the encrypted data code stream is decrypted by the first decryption method, and if the second encrypted synchronization word is detected, the encrypted data code stream is decrypted by the second decryption method to decrypt.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to an encryption and decryption device and method for an FPGA code stream. Background technique [0002] Editable logic gate array (FPGA) is widely used in the current electronic system design because of its flexibility and convenience, but the FPGA based on static memory (SRAM) needs to be configured by writing the code stream from the outside. During the configuration process, the code stream It is easy to be intercepted, which poses a great threat to the security of FPGA chips, so the encryption of FPGA chips has gradually attracted the attention of designers. The existing FPGA part does not use encryption technology, especially most mid-range and low-end chips. If encryption is used, most of them use the encryption algorithm of Advanced Encryption Standard (AES) or Data Encryption Standard (DES) to encrypt FPGA. There is no encryption technology yet. An FPGA uses two differ...

AI Technical Summary

Problems solved by technology

[0002] Editable logic gate array (FPGA) is widely used in the current electronic system design because of its flexibility and convenience, but the FPGA based on static memory (SRAM) needs to be configured by writing the code stream from the outside. During the configuration process, the code stream It is easy to be intercepted, which poses a great threat to the security of FPGA chips, so the encryption of FPGA chips is gradually valued by designers

The existing FPGA part does not use encryption technology, especially most mid-range and low-end chips. If encryption is used, most of them use the encryption algorithm of Advanced Encryption Standard (AES) or Data Encryption Standard (DES) to encrypt FPGA. There is no encryption technology yet. One FPGA uses two different encryption algorithms at the same time, especially the Block Cipher Standard (SM4) algorithm

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