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update pysha3 to 1.0b1, sha3 NIST 2015 standard

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Scott Sadler
2017-01-03 16:55:28 +01:00
parent 8fa3245309
commit c31feaf83d
2 changed files with 8 additions and 4 deletions
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10
docs/server/source/appendices/cryptography.md
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@@ -15,8 +15,9 @@ algorithm provided by the
which is a wrapper around the optimized reference implementation
from [http://keccak.noekeon.org](http://keccak.noekeon.org).
Here's the relevant code from `bigchaindb/bigchaindb/common/crypto.py`
(as of 11 December 2016):
**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.
Here's the relevant code from `bigchaindb/bigchaindb/common/crypto.py:
```python
import sha3
@@ -37,7 +38,10 @@ For example:
>>> import sha3
>>> data = '字'
>>> sha3.sha3_256(data.encode()).hexdigest()
'c67820de36d949a35ca24492e15767e2972b22f77213f6704ac0adec123c5690'
'2b38731ba4ef72d4034bef49e87c381d1fbe75435163b391dd33249331f91fe7'
>>> data = 'hello world'
>>> sha3.sha3_256(data.encode()).hexdigest()
'644bcc7e564373040999aac89e7622f3ca71fba1d972fd94a31c3bfbf24e3938'
```
Note: Hashlocks (which are one kind of crypto-condition)