Compact and high-speed hardware architectures and logic optimization methods for the AES algorithm Rijndael are described. Encryption and decryption data. look-up table logic or ROMs in the previous approaches, which requires a lot of hardware support. Reference [16] proposed the use of. Efficient Hardware Architecture of SEED S-box for . In order to optimize the inverse calculation, we . “A Compact Rijndael Hardware Architecture with. S- Box.

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S-Box – What does S-Box stand for? The proposed architecture consists of two parts: A significant portion of the overall silicon area for implementing AES architectures is occupied by the S-box.

Once decoding on the group, row, and column levels are done, the LUT to be used is known.

A Compact Rijndael Hardware Architecture with S-Box Optimization – Semantic Scholar

To clarify the results obtained, the case of processing four bytes in parallel is considered rijndaep without pipelining. Our proposed design will explain how the hardware look-up table works efficiently in the next couple of sections. On the other hand, these structures have a relatively long critical path.

The time periods of Besides, minimizing the supply voltage apparently reduces the power dissipation in designs. Rijndael Joan Daemen Encryption bix are broadly classified as symmetric and asymmetric algorithms based on the type of keys used.

The first step is group selection which is based on the a 7 and a 6 of the processed byte, which corresponds to Group 3 in this case. This paper approaches a single stage decoder kptimization which performs better compared to Bertoni.

Published online Oct The proposed design have less iteration or indexing as it has been broken down small tables. Comparatively, the implementation of our proposed work on FPGA had a very good result in terms of area, power and product.


Table 1 Resource utilization in percentage for proposed s-box.

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Good T, Benaissa M. Amongst the eight, Wolkerster [ 5 ] shows less area power product compare to others, but suffering large critical path delay. References in periodicals archive? The former approach decomposes the elements of finite field into polynomials over the subfield and performs inversion there.

As stated earlier our design is implemented as a combination of hardware look-up table and calculation of S-box, we simply compare our architecture with other recent literatures.

Multiplexers delay ns 9. In the process of proving the claim, a fair comparison among area, delay and power estimation is presented based on target delay.

In the first layer, an 8 X 8 S-box is applied to each byte. Architectural Realization Design—1 Design—2 Design—3 1-byte 4-byte byte 1-byte 4-byte byte 1-byte 4-byte byte Decoders Delay ns 6. Throughput Data rate units Mathematical optimization S-box. VLSI journalElsevier, pp— However, the critical path delay is more than twice that obtained in the proposed design.

J Electron Test The performance analysis of the proposed and simulated design is on the 0. The use of embedded functional blocks instead of general purpose logic elements is a good idea to reduce the dynamic power consumption of the designs [ 16 ]. The second better performance comes from Nabihah [ 34 ] with very good critical path delay.

A Compact Rijndael Hardware Architecture with S-Box Optimization

IEEE international symposium on circuits and system, pp- — The steps required in the proposed substitution method are summarized in the algorithm Fig 2. By introducing a new composite field, the S-Box structure is also optimized. It requires only 0. On the other hand, Implementations which calculate the S-box transformation in hardware were first proposed by Wolkerstorfer et al.


Furthermore, Section 5 presents the results and performance analysis archjtecture proposed S-box architecture followed by comparison to other recent related works in the Section 6. This arcuitecture has been cited by other articles in PMC. This design suffers long critical path delay due to switching and glitch. However, it may be necessary to add a large number of additional flip-flops when the pipeline stage is placed between the decoder and encoder.

Further speedup can be achieved by merging the second and the third steps of the algorithm since they are totally independent in terms of data and hardware resources required Fig 6.

Satoh [ 26 ]. Furthermore, the pipelined structure Fig 6 that has been described by the Eqs 12and 3 is iterated in Table 3. Pass transistor logic can be used as shown in Fig 4 E to implement a 2-to—1 multiplexer.

This paper proposes a new S-box architecture, defining it as ultra low power, robustly parallel and highly efficient in terms of area. Third Design Transmission Gates Implementation Transmission gates are simply switches which can act as two-to-one multiplexer as shown in Fig 4 F.

The optimal speed and hence higher efficiency is achieved when the state is taken single byte at a time. The substitution architedture S-box serves the purpose of bringing confusion to the data that is to be encrypted.