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sha256

Hardware implementation of the SHA-256 cryptographic hash function. The implementation is written in Verilog 2001 compliant code. The implementation includes a core and a wrapper that provides a 32-bit interface for simple integration. There is also an alternative wrapper that implements a Wishbone compliant interface.

This is a low area implementation that iterates over the rounds but there is no sharing of operations such as adders.

The hardware implementation is complemented by a functional model written in Python.

Implementation

Implementation results using the Altera Quartus-II v13.1 design tool.

Cyclone IV GX

  • 9587 LEs
  • 3349 registers
  • 73 MHz
  • 66 cycles latency

Todo

  • Extensive verification in physical device.
  • Complete documentation.

Status

(2014-02-19) - The core has been added to the Cryptech repo. The core comes from https://github.com/secworks/sha256