This is a Nim wrapper for https://github.com/prysmaticlabs/hashtree which is about SHA256 hashing batches of 64B blocks in parallel which can be useful to hash a Merkle Tree.

Building & Testing

It should just work to:

nimble install sha256_64B

You could then do an out-of-tree test by

    cp -pr tests /tmp
    cd /tmp/tests
    nim r --cc:gcc tests/autoselect.nim
dig: [[245, 165, 253, 66, 209, 106, 32, 48, 39, 152, 239, 110, 211, 9, 151, 155, 67, 0, 61, 35, 32, 217, 240, 232, 234, 152, 49, 169, 39, 89, 251, 75]]

(If you have cligen installed then you can also compile tests/bench. On Windows, you may need a large -b= to get a long enough test for meaningful times.)

Supported platforms

The optimization so far is only done on amd64/x86_64 and some ARM. Object files for libhashtree.a are only provided for Linux, Windows, & OSX. (This should be made more specific in a few ways.)

License

Licensed and distributed under either of

• MIT license: LICENSE-MIT or http://opensource.org/licenses/MIT

or

• Apache License, Version 2.0, (LICENSE-APACHEv2 or http://www.apache.org/licenses/LICENSE-2.0)

at your option. These files may not be copied, modified, or distributed except according to those terms.