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mention version of pysha3 and link to pypi page instead

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Scott Sadler
2017-01-03 17:04:43 +01:00
parent c31feaf83d
commit eeef08a43a
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docs/server/source/appendices/cryptography.md
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@@ -9,13 +9,13 @@ as described in [the section on JSON serialization](json-serialization.html).
## Hashes
BigchainDB computes transaction and block hashes using an implementation of the
[SHA3-256](https://en.wikipedia.org/wiki/SHA-3)
[SHA3-256](https://pypi.python.org/pypi/pysha3)
algorithm provided by the
[**pysha3** package](https://bitbucket.org/tiran/pykeccak),
which is a wrapper around the optimized reference implementation
from [http://keccak.noekeon.org](http://keccak.noekeon.org).
**Important**: Since selecting the Keccak hashing algorithm for SHA-3 in 2012, NIST [released a new version](https://en.wikipedia.org/wiki/SHA-3#cite_note-14) of the hash using the same algorithm but slightly different parameters. As of version 0.9, BigchainDB is using the latest version. See below for an example output of the hash function.
**Important**: Since selecting the Keccak hashing algorithm for SHA-3 in 2012, NIST [released a new version](https://en.wikipedia.org/wiki/SHA-3#cite_note-14) of the hash using the same algorithm but slightly different parameters. As of version 0.9, BigchainDB is using the latest version, supported by pysha3 1.0b1. See below for an example output of the hash function.
Here's the relevant code from `bigchaindb/bigchaindb/common/crypto.py: