# 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