传统3DES算法需要48轮迭代周期,存在吞吐率低的问题,提出二合一的循环迭代结构,该结构完成一次加解密运算需要25个时钟周期,兼容了ECB和CBC两种工作模式.在Altera公司的Quartus II 13.0软件上进行FPGA实现,选用器件EP4SGX530NF45C3,延时...传统3DES算法需要48轮迭代周期,存在吞吐率低的问题,提出二合一的循环迭代结构,该结构完成一次加解密运算需要25个时钟周期,兼容了ECB和CBC两种工作模式.在Altera公司的Quartus II 13.0软件上进行FPGA实现,选用器件EP4SGX530NF45C3,延时为3.61ns,吞吐率达到了709.1 Mb/s,面积为650ALUTs,性能优于同类设计.展开更多
In cryptography, the Triple DES (3DES, TDES or officially TDEA) is a symmetric-key block cipher which applies the Data Encryption Standard (DES) cipher algorithm three times to each data block. Electronic payment syst...In cryptography, the Triple DES (3DES, TDES or officially TDEA) is a symmetric-key block cipher which applies the Data Encryption Standard (DES) cipher algorithm three times to each data block. Electronic payment systems are known to use the TDES scheme for the encryption/decryption of data, and hence faster implementations are of great significance. Field Programmable Gate Arrays (FPGAs) offer a new solution for optimizing the performance of applications meanwhile the Triple Data Encryption Standard (TDES) offers a mean to secure information. In this paper we present a pipelined implementation in VHDL, in Electronic Code Book (EBC) mode, of this commonly used cryptography scheme with aim to improve performance. We achieve a 48-stage pipeline depth by implementing a TDES key buffer and right rotations in the DES decryption key scheduler. Using the Altera Cyclone II FPGA as our platform, we design and verify the implementation with the EDA tools provided by Altera. We gather cost and throughput information from the synthesis and timing results and compare the performance of our design to common implementations presented in other literatures. Our design achieves a throughput of 3.2 Gbps with a 50 MHz clock;a performance increase of up to 16 times.展开更多
文摘传统3DES算法需要48轮迭代周期,存在吞吐率低的问题,提出二合一的循环迭代结构,该结构完成一次加解密运算需要25个时钟周期,兼容了ECB和CBC两种工作模式.在Altera公司的Quartus II 13.0软件上进行FPGA实现,选用器件EP4SGX530NF45C3,延时为3.61ns,吞吐率达到了709.1 Mb/s,面积为650ALUTs,性能优于同类设计.
文摘In cryptography, the Triple DES (3DES, TDES or officially TDEA) is a symmetric-key block cipher which applies the Data Encryption Standard (DES) cipher algorithm three times to each data block. Electronic payment systems are known to use the TDES scheme for the encryption/decryption of data, and hence faster implementations are of great significance. Field Programmable Gate Arrays (FPGAs) offer a new solution for optimizing the performance of applications meanwhile the Triple Data Encryption Standard (TDES) offers a mean to secure information. In this paper we present a pipelined implementation in VHDL, in Electronic Code Book (EBC) mode, of this commonly used cryptography scheme with aim to improve performance. We achieve a 48-stage pipeline depth by implementing a TDES key buffer and right rotations in the DES decryption key scheduler. Using the Altera Cyclone II FPGA as our platform, we design and verify the implementation with the EDA tools provided by Altera. We gather cost and throughput information from the synthesis and timing results and compare the performance of our design to common implementations presented in other literatures. Our design achieves a throughput of 3.2 Gbps with a 50 MHz clock;a performance increase of up to 16 times.
