Lyra2REv2 is a hashing algorithm that consists of a chain of individual hashing algorithms, and it is used as a proof-of-work function in several cryptocurrencies. The most crucial and exotic hashing algorithm in the Lyra2REv2 chain is a specific instance of the general Lyra2 algorithm. This work presents the first hardware implementation of the specific instance of Lyra2 that is used in Lyra2REv2. Several properties of the aforementioned algorithm are exploited in order to optimize the design. In addition, an FPGA-based hardware implementation of a standalone miner for Lyra2REv2 on a Xilinx Multi-Processor System on Chip is presented. The proposed Lyra2REv2 miner is shown to be significantly more energy efficient than both a GPU and a commercially available FPGA-based miner. Finally, we also explain how the simplified Lyra2 and Lyra2REv2 architectures can be modified with minimal effort to also support the recent Lyra2REv3 chained hashing algorithm.

中文翻译：

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用于 Lyra2REv2 加密货币的基于 FPGA 的独立矿工

Lyra2REv2 是一种散列算法，由一系列单独的散列算法组成，在多种加密货币中用作工作量证明函数。Lyra2REv2 链中最关键、最奇特的哈希算法是通用 Lyra2 算法的一个具体实例。这项工作展示了 Lyra2REv2 中使用的 Lyra2 特定实例的第一个硬件实现。利用上述算法的几个特性来优化设计。此外，还介绍了 Xilinx 多处理器片上系统上 Lyra2REv2 独立矿工的基于 FPGA 的硬件实现。所提议的 Lyra2REv2 矿机被证明比 GPU 和市售的基于 FPGA 的矿机更节能。最后，