CudaSHA512

Implementation of SHA512 using CUDA. Inspiration from https://github.com/Horkyze/CudaSHA256.

Note

Do the following before first use

checkCudaErrors(cudaMemcpyToSymbol(sha512_dev_k, sha512_host_k, sizeof(sha512_host_k), 0, cudaMemcpyHostToDevice));