Use the new eth-keyfile module, fixes #292

[AndreMiras]

Use the new eth-keyfile module to encrypt/decrypt keyfile.
This makes it way faster to create and unlock accounts.
For instance with 100K PBKDF2 iteration rather than 100.
Running pyethapp/tests/test_accounts.py was outputing:

9 passed in 112.07 seconds

After the pull request it's now:

9 passed in 2.41 seconds

[alexandermuehle]

pyethapp is not upgraded to python3 so it is not compatible with eth-keys

[AndreMiras]

Hi @alexandermuehle thank you for your feedback!
The good news is that I'm using pyethapp for my Python3 project and it's working OK see here https://github.com/AndreMiras/EtherollApp
Do you want me to double check if all test are passing and come with a pull request that update tox and Jenkins for Python3?

[alexandermuehle]

If I remember correctly json-rpc functions didn't work under python3 when I last tried it under py3, but I agree since the rest of the eth projects seem to be moving towards python3, this project should follow.
#272 didn't receive an official response though would be nice if a maintainer could chime in

[alexandermuehle]

@vbuterin @ChihChengLiang @pipermerriam @hwwhww @changwu-tw
any of you still active or has this project been abandoned?

[pipermerriam]

To the best of my knowledge this project is largely unmaintained. If you're looking for a python ethereum node, check out trinity which is currently being developed within the py-evm codebase

[alexandermuehle]

thanks for clearing it up @pipermerriam, maybe add a "deprecated" note on the pyethapp readme so people find the right python implementation